Merge branch 'type-i18n' into 'develop'

dev: Add type annotations to i18n Co-authored-by: Lhcfl <Lhcfl@outlook.com> See merge request firefish/firefish!10773
Merge branch 'refactor/is-safe-url' into 'develop'
2024-05-06 19:03:29 +00:00 · 2024-05-06 17:11:51 +00:00 · 2024-05-07 01:54:29 +09:00 · 2024-05-07 00:56:37 +09:00 · 2024-05-06 15:31:18 +00:00 · 2024-05-07 00:22:51 +09:00
65 changed files with 1617 additions and 3304 deletions
--- a/.config/ci.yml
+++ b/.config/ci.yml
@ -1,195 +1,11 @@
-#━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
-# Firefish configuration
-#━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
-
-#   ┌─────┐
-#───┘ URL └─────────────────────────────────────────────────────
-
-# Final accessible URL seen by a user.
-url: https://example.tld/
-
-# ONCE YOU HAVE STARTED THE INSTANCE, DO NOT CHANGE THE
-# URL SETTINGS AFTER THAT!
-
-#   ┌───────────────────────┐
-#───┘ Port and TLS settings └───────────────────────────────────
-
-#
-# Misskey requires a reverse proxy to support HTTPS connections.
-#
-#                 +----- https://example.tld/ ------------+
-#   +------+      |+-------------+      +----------------+|
-#   | User | ---> || Proxy (443) | ---> | Misskey (3000) ||
-#   +------+      |+-------------+      +----------------+|
-#                 +---------------------------------------+
-#
-#   You need to set up a reverse proxy. (e.g. nginx)
-#   An encrypted connection with HTTPS is highly recommended
-#   because tokens may be transferred in GET requests.
-
-# The port that your Misskey server should listen on.
+url: http://localhost:3000
 port: 3000
-
-#   ┌──────────────────────────┐
-#───┘ PostgreSQL configuration └────────────────────────────────
-
 db:
  host: postgres
  port: 5432
-
-  # Database name
-  db: postgres
-
-  # Auth
-  user: postgres
-  pass: test
-
-  # Whether disable Caching queries
-  #disableCache: true
-
-  # Extra Connection options
-  #extra:
-  #  ssl: true
-
-#   ┌─────────────────────┐
-#───┘ Redis configuration └─────────────────────────────────────
-
+  db: firefish_db
+  user: firefish
+  pass: password
 redis:
  host: redis
  port: 6379
-  #family: 0  # 0=Both, 4=IPv4, 6=IPv6
-  #pass: example-pass
-  #prefix: example-prefix
-  #db: 1
-
-#   ┌─────────────────────────────┐
-#───┘ Elasticsearch configuration └─────────────────────────────
-
-#elasticsearch:
-#  host: localhost
-#  port: 9200
-#  ssl: false
-#  user: 
-#  pass: 
-
-#   ┌───────────────┐
-#───┘ ID generation └───────────────────────────────────────────
-
-# You can select the ID generation method.
-# You don't usually need to change this setting, but you can
-# change it according to your preferences.
-
-# Available methods:
-# aid ... Short, Millisecond accuracy
-# meid ... Similar to ObjectID, Millisecond accuracy
-# ulid ... Millisecond accuracy
-# objectid ... This is left for backward compatibility
-
-# ONCE YOU HAVE STARTED THE INSTANCE, DO NOT CHANGE THE
-# ID SETTINGS AFTER THAT!
-
-id: 'aid'
-
-#   ┌─────────────────────┐
-#───┘ Other configuration └─────────────────────────────────────
-
-# Max note length, should be < 8000.
-#maxNoteLength: 3000
-
-# Whether disable HSTS
-#disableHsts: true
-
-# Number of worker processes
-#clusterLimit: 1
-
-# Job concurrency per worker
-# deliverJobConcurrency: 128
-# inboxJobConcurrency: 16
-
-# Job rate limiter
-# deliverJobPerSec: 128
-# inboxJobPerSec: 16
-
-# Job attempts
-# deliverJobMaxAttempts: 12
-# inboxJobMaxAttempts: 8
-
-# IP address family used for outgoing request (ipv4, ipv6 or dual)
-#outgoingAddressFamily: ipv4
-
-# Syslog option
-#syslog:
-#  host: localhost
-#  port: 514
-
-# Proxy for HTTP/HTTPS
-#proxy: http://127.0.0.1:3128
-
-#proxyBypassHosts: [
-#  'example.com',
-#  '192.0.2.8'
-#]
-
-# Proxy for SMTP/SMTPS
-#proxySmtp: http://127.0.0.1:3128   # use HTTP/1.1 CONNECT
-#proxySmtp: socks4://127.0.0.1:1080 # use SOCKS4
-#proxySmtp: socks5://127.0.0.1:1080 # use SOCKS5
-
-# Media Proxy
-#mediaProxy: https://example.com/proxy
-
-# Proxy remote files (default: false)
-#proxyRemoteFiles: true
-
-#allowedPrivateNetworks: [
-#  '127.0.0.1/32'
-#]
-
-# Upload or download file size limits (bytes)
-#maxFileSize: 262144000
-
-# Managed hosting settings
-# !!!!!!!!!!
-# >>>>>> NORMAL SELF-HOSTERS, STAY AWAY! <<<<<<
-# >>>>>> YOU DON'T NEED THIS! <<<<<<
-# !!!!!!!!!!
-# Each category is optional, but if each item in each category is mandatory!
-# If you mess this up, that's on you, you've been warned...
-
-#maxUserSignups: 100
-#isManagedHosting: true
-#deepl:
-#  managed: true
-#  authKey: ''
-#  isPro: false
-#
-#email:
-#  managed: true
-#  address: 'example@email.com'
-#  host: 'email.com'
-#  port: 587
-#  user: 'example@email.com'
-#  pass: ''
-#  useImplicitSslTls: false
-#
-#objectStorage:
-#  managed: true
-#  baseUrl: ''
-#  bucket: ''
-#  prefix: ''
-#  endpoint: ''
-#  region: ''
-#  accessKey: ''
-#  secretKey: ''
-#  useSsl: true
-#  connnectOverProxy: false
-#  setPublicReadOnUpload: true
-#  s3ForcePathStyle: true
-
-# !!!!!!!!!!
-# >>>>>> AGAIN, NORMAL SELF-HOSTERS, STAY AWAY! <<<<<<
-# >>>>>> YOU DON'T NEED THIS, ABOVE SETTINGS ARE FOR MANAGED HOSTING ONLY! <<<<<<
-# !!!!!!!!!!
-
-# Seriously. Do NOT fill out the above settings if you're self-hosting.
-# They're much better off being set from the control panel. 
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@ -0,0 +1,57 @@
+image: docker.io/rust:slim-bookworm
+
+services:
+  - name: docker.io/groonga/pgroonga:latest-alpine-12-slim
+    alias: postgres
+  - name: docker.io/redis:7-alpine
+    alias: redis
+
+workflow:
+  rules:
+    - if: $CI_PIPELINE_SOURCE == 'merge_request_event'
+      when: always
+    - if: $CI_MERGE_REQUEST_TARGET_BRANCH_NAME == 'main'
+      when: never
+
+cache:
+  paths:
+    - node_modules
+    # - /usr/local/cargo/registry/index
+    # - /usr/local/cargo/registry/cache
+    - target/debug/deps
+    - target/debug/build
+
+stages:
+  - test
+
+variables:
+  POSTGRES_DB: 'firefish_db'
+  POSTGRES_USER: 'firefish'
+  POSTGRES_PASSWORD: 'password'
+  POSTGRES_HOST_AUTH_METHOD: 'trust'
+  DEBIAN_FRONTEND: 'noninteractive'
+  CARGO_PROFILE_DEV_OPT_LEVEL: '0'
+  CARGO_PROFILE_DEV_LTO: 'off'
+  CARGO_PROFILE_DEV_DEBUG: 'none'
+
+default:
+  before_script:
+    - mkdir -p "${CARGO_HOME}"
+    - apt-get update && apt-get -y upgrade
+    - apt-get -y --no-install-recommends install curl
+    - curl -fsSL 'https://deb.nodesource.com/setup_18.x' | bash -
+    - apt-get install -y --no-install-recommends build-essential clang mold python3 perl nodejs postgresql-client
+    - corepack enable
+    - corepack prepare pnpm@latest --activate
+    - cp .config/ci.yml .config/default.yml
+    - cp ci/cargo/config.toml /usr/local/cargo/config.toml
+    - export PGPASSWORD="${POSTGRES_PASSWORD}"
+    - psql --host postgres --user "${POSTGRES_USER}" --dbname "${POSTGRES_DB}" --command 'CREATE EXTENSION pgroonga'
+
+build_and_cargo_unit_test:
+  stage: test
+  script:
+    - pnpm install --frozen-lockfile
+    - pnpm run build:debug
+    - pnpm run migrate
+    - cargo test
--- a/Cargo.lock
+++ b/Cargo.lock
@ -124,6 +124,17 @@ version = "0.7.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "96d30a06541fbafbc7f82ed10c06164cfbd2c401138f6addd8404629c4b16711"

+[[package]]
+name = "async-channel"
+version = "1.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "81953c529336010edd6d8e358f886d9581267795c61b19475b71314bffa46d35"
+dependencies = [
+ "concurrent-queue",
+ "event-listener",
+ "futures-core",
+]
+
 [[package]]
 name = "async-stream"
 version = "0.3.5"
@ -207,6 +218,7 @@ dependencies = [
 "emojis",
 "idna",
 "image",
+ "isahc",
 "macro_rs",
 "napi",
 "napi-build",
@ -218,7 +230,6 @@ dependencies = [
 "rand",
 "redis",
 "regex",
- "reqwest",
 "rmp-serde",
 "sea-orm",
 "serde",
@ -445,6 +456,12 @@ version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "514de17de45fdb8dc022b1a7975556c53c86f9f0aa5f534b98977b171857c2c9"

+[[package]]
+name = "castaway"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a2698f953def977c68f935bb0dfa959375ad4638570e969e2f1e9f433cbf1af6"
+
 [[package]]
 name = "cc"
 version = "1.0.95"
@ -519,6 +536,15 @@ dependencies = [
 "memchr",
 ]

+[[package]]
+name = "concurrent-queue"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4ca0197aee26d1ae37445ee532fefce43251d24cc7c166799f4d46817f1d3973"
+dependencies = [
+ "crossbeam-utils",
+]
+
 [[package]]
 name = "const-oid"
 version = "0.9.6"
@ -534,16 +560,6 @@ dependencies = [
 "unicode-segmentation",
 ]

-[[package]]
-name = "core-foundation"
-version = "0.9.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "91e195e091a93c46f7102ec7818a2aa394e1e1771c3ab4825963fa03e45afb8f"
-dependencies = [
- "core-foundation-sys",
- "libc",
-]
-
 [[package]]
 name = "core-foundation-sys"
 version = "0.8.6"
@ -661,6 +677,37 @@ dependencies = [
 "sha3",
 ]

+[[package]]
+name = "curl"
+version = "0.4.46"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e2161dd6eba090ff1594084e95fd67aeccf04382ffea77999ea94ed42ec67b6"
+dependencies = [
+ "curl-sys",
+ "libc",
+ "openssl-probe",
+ "openssl-sys",
+ "schannel",
+ "socket2",
+ "windows-sys 0.52.0",
+]
+
+[[package]]
+name = "curl-sys"
+version = "0.4.72+curl-8.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "29cbdc8314c447d11e8fd156dcdd031d9e02a7a976163e396b548c03153bc9ea"
+dependencies = [
+ "cc",
+ "libc",
+ "libnghttp2-sys",
+ "libz-sys",
+ "openssl-sys",
+ "pkg-config",
+ "vcpkg",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "der"
 version = "0.7.9"
@ -793,6 +840,15 @@ dependencies = [
 "zune-inflate",
 ]

+[[package]]
+name = "fastrand"
+version = "1.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e51093e27b0797c359783294ca4f0a911c270184cb10f85783b118614a1501be"
+dependencies = [
+ "instant",
+]
+
 [[package]]
 name = "fastrand"
 version = "2.0.2"
@ -929,6 +985,21 @@ version = "0.3.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a44623e20b9681a318efdd71c299b6b222ed6f231972bfe2f224ebad6311f0c1"

+[[package]]
+name = "futures-lite"
+version = "1.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49a9d51ce47660b1e808d3c990b4709f2f415d928835a17dfd16991515c46bce"
+dependencies = [
+ "fastrand 1.9.0",
+ "futures-core",
+ "futures-io",
+ "memchr",
+ "parking",
+ "pin-project-lite",
+ "waker-fn",
+]
+
 [[package]]
 name = "futures-sink"
 version = "0.3.30"
@ -995,25 +1066,6 @@ version = "0.28.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4271d37baee1b8c7e4b708028c57d816cf9d2434acb33a549475f78c181f6253"

-[[package]]
-name = "h2"
-version = "0.4.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "816ec7294445779408f36fe57bc5b7fc1cf59664059096c65f905c1c61f58069"
-dependencies = [
- "bytes",
- "fnv",
- "futures-core",
- "futures-sink",
- "futures-util",
- "http",
- "indexmap",
- "slab",
- "tokio",
- "tokio-util",
- "tracing",
-]
-
 [[package]]
 name = "half"
 version = "2.4.1"
@ -1108,100 +1160,15 @@ dependencies = [

 [[package]]
 name = "http"
-version = "1.1.0"
+version = "0.2.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "21b9ddb458710bc376481b842f5da65cdf31522de232c1ca8146abce2a358258"
+checksum = "601cbb57e577e2f5ef5be8e7b83f0f63994f25aa94d673e54a92d5c516d101f1"
 dependencies = [
 "bytes",
 "fnv",
 "itoa",
 ]

-[[package]]
-name = "http-body"
-version = "1.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1cac85db508abc24a2e48553ba12a996e87244a0395ce011e62b37158745d643"
-dependencies = [
- "bytes",
- "http",
-]
-
-[[package]]
-name = "http-body-util"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0475f8b2ac86659c21b64320d5d653f9efe42acd2a4e560073ec61a155a34f1d"
-dependencies = [
- "bytes",
- "futures-core",
- "http",
- "http-body",
- "pin-project-lite",
-]
-
-[[package]]
-name = "httparse"
-version = "1.8.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d897f394bad6a705d5f4104762e116a75639e470d80901eed05a860a95cb1904"
-
-[[package]]
-name = "hyper"
-version = "1.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fe575dd17d0862a9a33781c8c4696a55c320909004a67a00fb286ba8b1bc496d"
-dependencies = [
- "bytes",
- "futures-channel",
- "futures-util",
- "h2",
- "http",
- "http-body",
- "httparse",
- "itoa",
- "pin-project-lite",
- "smallvec",
- "tokio",
- "want",
-]
-
-[[package]]
-name = "hyper-tls"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "70206fc6890eaca9fde8a0bf71caa2ddfc9fe045ac9e5c70df101a7dbde866e0"
-dependencies = [
- "bytes",
- "http-body-util",
- "hyper",
- "hyper-util",
- "native-tls",
- "tokio",
- "tokio-native-tls",
- "tower-service",
-]
-
-[[package]]
-name = "hyper-util"
-version = "0.1.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ca38ef113da30126bbff9cd1705f9273e15d45498615d138b0c20279ac7a76aa"
-dependencies = [
- "bytes",
- "futures-channel",
- "futures-util",
- "http",
- "http-body",
- "hyper",
- "pin-project-lite",
- "socket2",
- "tokio",
- "tower",
- "tower-service",
- "tracing",
-]
-
 [[package]]
 name = "iana-time-zone"
 version = "0.1.60"
@ -1304,6 +1271,15 @@ dependencies = [
 "generic-array",
 ]

+[[package]]
+name = "instant"
+version = "0.1.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a5bbe824c507c5da5956355e86a746d82e0e1464f65d862cc5e71da70e94b2c"
+dependencies = [
+ "cfg-if",
+]
+
 [[package]]
 name = "interpolate_name"
 version = "0.2.4"
@ -1316,10 +1292,31 @@ dependencies = [
 ]

 [[package]]
-name = "ipnet"
-version = "2.9.0"
+name = "isahc"
+version = "1.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f518f335dce6725a761382244631d86cf0ccb2863413590b31338feb467f9c3"
+checksum = "334e04b4d781f436dc315cb1e7515bd96826426345d498149e4bde36b67f8ee9"
+dependencies = [
+ "async-channel",
+ "castaway",
+ "crossbeam-utils",
+ "curl",
+ "curl-sys",
+ "encoding_rs",
+ "event-listener",
+ "futures-lite",
+ "http",
+ "log",
+ "mime",
+ "once_cell",
+ "polling",
+ "slab",
+ "sluice",
+ "tracing",
+ "tracing-futures",
+ "url",
+ "waker-fn",
+]

 [[package]]
 name = "itertools"
@ -1417,6 +1414,16 @@ version = "0.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4ec2a862134d2a7d32d7983ddcdd1c4923530833c9f2ea1a44fc5fa473989058"

+[[package]]
+name = "libnghttp2-sys"
+version = "0.1.10+1.61.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "959c25552127d2e1fa72f0e52548ec04fc386e827ba71a7bd01db46a447dc135"
+dependencies = [
+ "cc",
+ "libc",
+]
+
 [[package]]
 name = "libsqlite3-sys"
 version = "0.27.0"
@ -1428,6 +1435,18 @@ dependencies = [
 "vcpkg",
 ]

+[[package]]
+name = "libz-sys"
+version = "1.1.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5e143b5e666b2695d28f6bca6497720813f699c9602dd7f5cac91008b8ada7f9"
+dependencies = [
+ "cc",
+ "libc",
+ "pkg-config",
+ "vcpkg",
+]
+
 [[package]]
 name = "linux-raw-sys"
 version = "0.4.13"
@ -1591,24 +1610,6 @@ dependencies = [
 "libloading",
 ]

-[[package]]
-name = "native-tls"
-version = "0.2.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "07226173c32f2926027b63cce4bcd8076c3552846cbe7925f3aaffeac0a3b92e"
-dependencies = [
- "lazy_static",
- "libc",
- "log",
- "openssl",
- "openssl-probe",
- "openssl-sys",
- "schannel",
- "security-framework",
- "security-framework-sys",
- "tempfile",
-]
-
 [[package]]
 name = "new_debug_unreachable"
 version = "1.0.6"
@ -1881,6 +1882,12 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b15813163c1d831bf4a13c3610c05c0d03b39feb07f7e09fa234dac9b15aaf39"

+[[package]]
+name = "parking"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bb813b8af86854136c6922af0598d719255ecb2179515e6e7730d468f05c9cae"
+
 [[package]]
 name = "parking_lot"
 version = "0.12.2"
@ -2026,6 +2033,22 @@ dependencies = [
 "miniz_oxide",
 ]

+[[package]]
+name = "polling"
+version = "2.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4b2d323e8ca7996b3e23126511a523f7e62924d93ecd5ae73b333815b0eb3dce"
+dependencies = [
+ "autocfg",
+ "bitflags 1.3.2",
+ "cfg-if",
+ "concurrent-queue",
+ "libc",
+ "log",
+ "pin-project-lite",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "powerfmt"
 version = "0.2.0"
@ -2330,49 +2353,6 @@ dependencies = [
 "bytecheck",
 ]

-[[package]]
-name = "reqwest"
-version = "0.12.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "566cafdd92868e0939d3fb961bd0dc25fcfaaed179291093b3d43e6b3150ea10"
-dependencies = [
- "base64 0.22.0",
- "bytes",
- "encoding_rs",
- "futures-channel",
- "futures-core",
- "futures-util",
- "h2",
- "http",
- "http-body",
- "http-body-util",
- "hyper",
- "hyper-tls",
- "hyper-util",
- "ipnet",
- "js-sys",
- "log",
- "mime",
- "native-tls",
- "once_cell",
- "percent-encoding",
- "pin-project-lite",
- "rustls-pemfile 2.1.2",
- "serde",
- "serde_json",
- "serde_urlencoded",
- "sync_wrapper",
- "system-configuration",
- "tokio",
- "tokio-native-tls",
- "tower-service",
- "url",
- "wasm-bindgen",
- "wasm-bindgen-futures",
- "web-sys",
- "winreg",
-]
-
 [[package]]
 name = "rgb"
 version = "0.8.37"
@ -2523,22 +2503,6 @@ dependencies = [
 "base64 0.21.7",
 ]

-[[package]]
-name = "rustls-pemfile"
-version = "2.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "29993a25686778eb88d4189742cd713c9bce943bc54251a33509dc63cbacf73d"
-dependencies = [
- "base64 0.22.0",
- "rustls-pki-types",
-]
-
-[[package]]
-name = "rustls-pki-types"
-version = "1.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "beb461507cee2c2ff151784c52762cf4d9ff6a61f3e80968600ed24fa837fa54"
-
 [[package]]
 name = "rustls-webpki"
 version = "0.101.7"
@ -2680,29 +2644,6 @@ version = "4.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1c107b6f4780854c8b126e228ea8869f4d7b71260f962fefb57b996b8959ba6b"

-[[package]]
-name = "security-framework"
-version = "2.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "770452e37cad93e0a50d5abc3990d2bc351c36d0328f86cefec2f2fb206eaef6"
-dependencies = [
- "bitflags 1.3.2",
- "core-foundation",
- "core-foundation-sys",
- "libc",
- "security-framework-sys",
-]
-
-[[package]]
-name = "security-framework-sys"
-version = "2.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "41f3cc463c0ef97e11c3461a9d3787412d30e8e7eb907c79180c4a57bf7c04ef"
-dependencies = [
- "core-foundation-sys",
- "libc",
-]
-
 [[package]]
 name = "semver"
 version = "1.0.22"
@ -2749,18 +2690,6 @@ dependencies = [
 "serde",
 ]

-[[package]]
-name = "serde_urlencoded"
-version = "0.7.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d3491c14715ca2294c4d6a88f15e84739788c1d030eed8c110436aafdaa2f3fd"
-dependencies = [
- "form_urlencoded",
- "itoa",
- "ryu",
- "serde",
-]
-
 [[package]]
 name = "serde_yaml"
 version = "0.9.34+deprecated"
@ -2876,6 +2805,17 @@ dependencies = [
 "autocfg",
 ]

+[[package]]
+name = "sluice"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6d7400c0eff44aa2fcb5e31a5f24ba9716ed90138769e4977a2ba6014ae63eb5"
+dependencies = [
+ "async-channel",
+ "futures-core",
+ "futures-io",
+]
+
 [[package]]
 name = "smallvec"
 version = "1.13.2"
@ -2972,7 +2912,7 @@ dependencies = [
 "percent-encoding",
 "rust_decimal",
 "rustls",
- "rustls-pemfile 1.0.4",
+ "rustls-pemfile",
 "serde",
 "serde_json",
 "sha2",
@ -3229,33 +3169,6 @@ dependencies = [
 "syn 2.0.60",
 ]

-[[package]]
-name = "sync_wrapper"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2047c6ded9c721764247e62cd3b03c09ffc529b2ba5b10ec482ae507a4a70160"
-
-[[package]]
-name = "system-configuration"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ba3a3adc5c275d719af8cb4272ea1c4a6d668a777f37e115f6d11ddbc1c8e0e7"
-dependencies = [
- "bitflags 1.3.2",
- "core-foundation",
- "system-configuration-sys",
-]
-
-[[package]]
-name = "system-configuration-sys"
-version = "0.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a75fb188eb626b924683e3b95e3a48e63551fcfb51949de2f06a9d91dbee93c9"
-dependencies = [
- "core-foundation-sys",
- "libc",
-]
-
 [[package]]
 name = "system-deps"
 version = "6.2.2"
@ -3288,7 +3201,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "85b77fafb263dd9d05cbeac119526425676db3784113aa9295c88498cbf8bff1"
 dependencies = [
 "cfg-if",
- "fastrand",
+ "fastrand 2.0.2",
 "rustix",
 "windows-sys 0.52.0",
 ]
@ -3410,16 +3323,6 @@ dependencies = [
 "syn 2.0.60",
 ]

-[[package]]
-name = "tokio-native-tls"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bbae76ab933c85776efabc971569dd6119c580d8f5d448769dec1764bf796ef2"
-dependencies = [
- "native-tls",
- "tokio",
-]
-
 [[package]]
 name = "tokio-stream"
 version = "0.1.15"
@ -3431,20 +3334,6 @@ dependencies = [
 "tokio",
 ]

-[[package]]
-name = "tokio-util"
-version = "0.7.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5419f34732d9eb6ee4c3578b7989078579b7f039cbbb9ca2c4da015749371e15"
-dependencies = [
- "bytes",
- "futures-core",
- "futures-sink",
- "pin-project-lite",
- "tokio",
- "tracing",
-]
-
 [[package]]
 name = "toml"
 version = "0.8.12"
@ -3490,34 +3379,6 @@ dependencies = [
 "winnow 0.6.7",
 ]

-[[package]]
-name = "tower"
-version = "0.4.13"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b8fa9be0de6cf49e536ce1851f987bd21a43b771b09473c3549a6c853db37c1c"
-dependencies = [
- "futures-core",
- "futures-util",
- "pin-project",
- "pin-project-lite",
- "tokio",
- "tower-layer",
- "tower-service",
- "tracing",
-]
-
-[[package]]
-name = "tower-layer"
-version = "0.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c20c8dbed6283a09604c3e69b4b7eeb54e298b8a600d4d5ecb5ad39de609f1d0"
-
-[[package]]
-name = "tower-service"
-version = "0.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b6bc1c9ce2b5135ac7f93c72918fc37feb872bdc6a5533a8b85eb4b86bfdae52"
-
 [[package]]
 name = "tracing"
 version = "0.1.40"
@ -3551,6 +3412,16 @@ dependencies = [
 "valuable",
 ]

+[[package]]
+name = "tracing-futures"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "97d095ae15e245a057c8e8451bab9b3ee1e1f68e9ba2b4fbc18d0ac5237835f2"
+dependencies = [
+ "pin-project",
+ "tracing",
+]
+
 [[package]]
 name = "tracing-log"
 version = "0.2.0"
@ -3576,12 +3447,6 @@ dependencies = [
 "tracing-log",
 ]

-[[package]]
-name = "try-lock"
-version = "0.2.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"
-
 [[package]]
 name = "typenum"
 version = "1.17.0"
@ -3695,13 +3560,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"

 [[package]]
-name = "want"
-version = "0.3.1"
+name = "waker-fn"
+version = "1.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bfa7760aed19e106de2c7c0b581b509f2f25d3dacaf737cb82ac61bc6d760b0e"
-dependencies = [
- "try-lock",
-]
+checksum = "f3c4517f54858c779bbcbf228f4fca63d121bf85fbecb2dc578cdf4a39395690"

 [[package]]
 name = "wasi"
@ -3740,18 +3602,6 @@ dependencies = [
 "wasm-bindgen-shared",
 ]

-[[package]]
-name = "wasm-bindgen-futures"
-version = "0.4.42"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "76bc14366121efc8dbb487ab05bcc9d346b3b5ec0eaa76e46594cabbe51762c0"
-dependencies = [
- "cfg-if",
- "js-sys",
- "wasm-bindgen",
- "web-sys",
-]
-
 [[package]]
 name = "wasm-bindgen-macro"
 version = "0.2.92"
@ -3781,16 +3631,6 @@ version = "0.2.92"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "af190c94f2773fdb3729c55b007a722abb5384da03bc0986df4c289bf5567e96"

-[[package]]
-name = "web-sys"
-version = "0.3.69"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77afa9a11836342370f4817622a2f0f418b134426d91a82dfb48f532d2ec13ef"
-dependencies = [
- "js-sys",
- "wasm-bindgen",
-]
-
 [[package]]
 name = "webpki-roots"
 version = "0.25.4"
@ -4001,16 +3841,6 @@ dependencies = [
 "memchr",
 ]

-[[package]]
-name = "winreg"
-version = "0.52.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a277a57398d4bfa075df44f501a17cfdf8542d224f0d36095a2adc7aee4ef0a5"
-dependencies = [
- "cfg-if",
- "windows-sys 0.48.0",
-]
-
 [[package]]
 name = "wyz"
 version = "0.5.1"
--- a/Cargo.toml
+++ b/Cargo.toml
@ -18,6 +18,7 @@ cuid2 = "0.1.2"
 emojis = "0.6.2"
 idna = "0.5.0"
 image = "0.25.1"
+isahc = "1.7.2"
 nom-exif = "1.2.0"
 once_cell = "1.19.0"
 openssl = "0.10.64"
@ -27,7 +28,6 @@ quote = "1.0.36"
 rand = "0.8.5"
 redis = "0.25.3"
 regex = "1.10.4"
-reqwest = "0.12.4"
 rmp-serde = "1.2.0"
 sea-orm = "0.12.15"
 serde = "1.0.198"
--- a/2
+++ b/2
@ -45,7 +45,7 @@ COPY packages/backend-rs/index.js packages/backend-rs/built/index.js
 # Copy in the rest of the files to compile
 COPY . ./
 RUN NODE_ENV='production' pnpm run --filter firefish-js build
-RUN NODE_ENV='production' pnpm run --recursive --parallel --filter '!backend-rs' --filter '!firefish-js' build && pnpm run gulp
+RUN NODE_ENV='production' pnpm run --recursive --parallel --filter '!backend-rs' --filter '!firefish-js' build && pnpm run build:assets

 # Trim down the dependencies to only those for production
 RUN find . -path '*/node_modules/*' -delete && pnpm install --prod --frozen-lockfile
--- a/ci/cargo/config.toml
+++ b/ci/cargo/config.toml
@ -0,0 +1,3 @@
+[target.x86_64-unknown-linux-gnu]
+linker = "/usr/bin/clang"
+rustflags = ["-C", "link-arg=--ld-path=/usr/bin/mold"]
--- a/docs/api-change.md
+++ b/docs/api-change.md
@ -2,6 +2,8 @@

 Breaking changes are indicated by the :warning: icon.

+- Adding `lang` to the response of `i` and the request parameter of `i/update`.
+
 ## v20240504

 - :warning: Removed `release` endpoint.
--- a/docs/downgrade.sql
+++ b/docs/downgrade.sql
@ -1,6 +1,7 @@
 BEGIN;

 DELETE FROM "migrations" WHERE name IN (
+    'AddUserProfileLanguage1714888400293',
    'DropUnusedIndexes1714643926317',
    'AlterAkaType1714099399879',
    'AddDriveFileUsage1713451569342',
@ -764,9 +765,6 @@ CREATE SEQUENCE public.__chart_day__users_id_seq
    CACHE 1;
 ALTER SEQUENCE public.__chart_day__users_id_seq OWNED BY public.__chart_day__users.id;

-- drop-user-profile-language
-ALTER TABLE "user_profile" ADD COLUMN "lang" character varying(32);
-
 -- emoji-moderator
 ALTER TABLE "user" DROP COLUMN "emojiModPerm";
 DROP TYPE "public"."user_emojimodperm_enum";
--- a/docs/install.md
+++ b/docs/install.md
@ -326,7 +326,7 @@ cd ~/firefish
 - To add custom locales, place them in the `./custom/locales/` directory. If you name your custom locale the same as an existing locale, it will overwrite it. If you give it a unique name, it will be added to the list. Also make sure that the first part of the filename matches the locale you're basing it on. (Example: `en-FOO.yml`)
 - To add custom error images, place them in the `./custom/assets/badges` directory, replacing the files already there.
 - To add custom sounds, place only mp3 files in the `./custom/assets/sounds` directory.
- To update custom assets without rebuilding, just run `pnpm run gulp`.
+- To update custom assets without rebuilding, just run `pnpm run build:assets`.
 - To block ChatGPT, CommonCrawl, or other crawlers from indexing your instance, uncomment the respective rules in `./custom/robots.txt`.

 ## Tips & Tricks
--- a/gulpfile.js
+++ b/gulpfile.js
@ -1,101 +0,0 @@
-/**
- * Gulp tasks
- */
-
-const fs = require("fs");
-const gulp = require("gulp");
-const replace = require("gulp-replace");
-const terser = require("gulp-terser");
-const cssnano = require("gulp-cssnano");
-
-const meta = require("./package.json");
-
-gulp.task("copy:backend:views", () =>
-	gulp
-		.src("./packages/backend/src/server/web/views/**/*")
-		.pipe(gulp.dest("./packages/backend/built/server/web/views")),
-);
-
-gulp.task("copy:backend:custom", () =>
-	gulp
-		.src("./custom/assets/**/*")
-		.pipe(gulp.dest("./packages/backend/assets/")),
-);
-
-gulp.task("copy:client:fonts", () =>
-	gulp
-		.src("./packages/client/node_modules/three/examples/fonts/**/*")
-		.pipe(gulp.dest("./built/_client_dist_/fonts/")),
-);
-
-gulp.task("copy:client:locales", async (cb) => {
-	fs.mkdirSync("./built/_client_dist_/locales", { recursive: true });
-	const { default: locales } = await import("./locales/index.mjs");
-
-	const v = { _version_: meta.version };
-
-	for (const [lang, locale] of Object.entries(locales)) {
-		fs.writeFileSync(
-			`./built/_client_dist_/locales/${lang}.${meta.version}.json`,
-			JSON.stringify({ ...locale, ...v }),
-			"utf-8",
-		);
-	}
-
-	cb();
-});
-
-gulp.task("build:backend:script", async () => {
-	const { default: locales } = await import("./locales/index.mjs");
-
-	return gulp
-		.src([
-			"./packages/backend/src/server/web/boot.js",
-			"./packages/backend/src/server/web/bios.js",
-			"./packages/backend/src/server/web/cli.js",
-		])
-		.pipe(replace("SUPPORTED_LANGS", JSON.stringify(Object.keys(locales))))
-		.pipe(
-			terser({
-				toplevel: true,
-			}),
-		)
-		.pipe(gulp.dest("./packages/backend/built/server/web/"));
-});
-
-gulp.task("build:backend:style", () => {
-	return gulp
-		.src([
-			"./packages/backend/src/server/web/style.css",
-			"./packages/backend/src/server/web/bios.css",
-			"./packages/backend/src/server/web/cli.css",
-		])
-		.pipe(
-			cssnano({
-				zindex: false,
-			}),
-		)
-		.pipe(gulp.dest("./packages/backend/built/server/web/"));
-});
-
-gulp.task(
-	"build",
-	gulp.parallel(
-		"copy:client:locales",
-		"copy:backend:views",
-		"copy:backend:custom",
-		"build:backend:script",
-		"build:backend:style",
-		"copy:client:fonts",
-	),
-);
-
-gulp.task("default", gulp.task("build"));
-
-gulp.task("watch", () => {
-	gulp.watch(
-		["./packages/*/src/**/*"],
-		{ ignoreInitial: false },
-		gulp.task("build"),
-	);
-});
--- a/locales/en-US.yml
+++ b/locales/en-US.yml
@ -766,6 +766,9 @@ confirmToUnclipAlreadyClippedNote: "This post is already part of the \"{name}\"
 public: "Public"
 i18nInfo: "Firefish is being translated into various languages by volunteers. You
  can help at {link}."
+i18nServerInfo: "New clients will be in {language} by default."
+i18nServerChange: "Use {language} instead."
+i18nServerSet: "Use {language} for new clients."
 manageAccessTokens: "Manage access tokens"
 accountInfo: "Account Info"
 notesCount: "Number of posts"
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@ -685,6 +685,9 @@ unclip: "クリップ解除"
 confirmToUnclipAlreadyClippedNote: "この投稿はすでにクリップ「{name}」に含まれています。投稿をこのクリップから除外しますか？"
 public: "公開"
 i18nInfo: "Firefishは有志によって様々な言語に翻訳されています。{link}で翻訳に協力できます。"
+i18nServerInfo: "新しい端末では{language}が既定の言語になります。"
+i18nServerChange: "{language}に変更する。"
+i18nServerSet: "新しい端末での表示言語を{language}にします。"
 manageAccessTokens: "アクセストークンの管理"
 accountInfo: "アカウント情報"
 notesCount: "投稿の数"
--- a/locales/zh-CN.yml
+++ b/locales/zh-CN.yml
@ -667,6 +667,9 @@ unclip: "移除便签"
 confirmToUnclipAlreadyClippedNote: "本帖已包含在便签 \"{name}\" 里。您想要将本帖从该便签中移除吗？"
 public: "公开"
 i18nInfo: "Firefish 已经被志愿者们翻译成了各种语言。如果您也有兴趣，可以通过 {link} 帮助翻译。"
+i18nServerInfo: "新客户端将默认使用 {language}。"
+i18nServerChange: "改为 {language}。"
+i18nServerSet: "设定新客户端使用 {language}。"
 manageAccessTokens: "管理访问令牌"
 accountInfo: "账号信息"
 notesCount: "帖子数量"
--- a/locales/zh-TW.yml
+++ b/locales/zh-TW.yml
@ -661,6 +661,9 @@ unclip: "解除摘錄"
 confirmToUnclipAlreadyClippedNote: "此貼文已包含在摘錄「{name}」中。 你想將貼文從這個摘錄中排除嗎？"
 public: "公開"
 i18nInfo: "Firefish已經被志願者們翻譯成各種語言版本，如果想要幫忙的話，可以進入{link}幫助翻譯。"
+i18nServerInfo: "新客戶端將默認使用 {language}。"
+i18nServerChange: "改為 {language}。"
+i18nServerSet: "設定新客戶端使用 {language}。"
 manageAccessTokens: "管理存取權杖"
 accountInfo: "帳戶資訊"
 notesCount: "貼文數量"
--- a/package.json
+++ b/package.json
@ -9,14 +9,15 @@
 	"private": true,
 	"scripts": {
 		"rebuild": "pnpm run clean && pnpm run build",
-		"build": "pnpm node ./scripts/build.mjs && pnpm run gulp",
+		"build": "pnpm node ./scripts/build.mjs && pnpm run build:assets",
+		"build:assets": "pnpm node ./scripts/copy-assets.mjs",
+		"build:debug": "pnpm run clean && pnpm node ./scripts/dev-build.mjs && pnpm run build:assets",
 		"start": "pnpm --filter backend run start",
-		"start:container": "pnpm run gulp && pnpm run migrate && pnpm run start",
+		"start:container": "pnpm run build:assets && pnpm run migrate && pnpm run start",
 		"start:test": "pnpm --filter backend run start:test",
 		"init": "pnpm run migrate",
 		"migrate": "pnpm --filter backend run migration:run",
 		"revertmigration": "pnpm --filter backend run migration:revert",
-		"gulp": "gulp build",
 		"watch": "pnpm run dev",
 		"dev": "pnpm node ./scripts/dev.mjs",
 		"dev:staging": "NODE_OPTIONS=--max_old_space_size=3072 NODE_ENV=development pnpm run build && pnpm run start",
@ -24,7 +25,6 @@
 		"lint:ts": "pnpm --filter !firefish-js -r --parallel run lint",
 		"lint:rs": "cargo clippy --fix --allow-dirty --allow-staged && cargo fmt --all --",
 		"debug": "pnpm run build:debug && pnpm run start",
-		"build:debug": "pnpm run clean && pnpm node ./scripts/dev-build.mjs && pnpm run gulp",
 		"mocha": "pnpm --filter backend run mocha",
 		"test": "pnpm run test:ts && pnpm run test:rs",
 		"test:ts": "pnpm run mocha",
@ -38,10 +38,6 @@
 		"clean-all": "pnpm run clean && pnpm run clean-cargo && pnpm run clean-npm"
 	},
 	"dependencies": {
-		"gulp": "4.0.2",
-		"gulp-cssnano": "2.1.3",
-		"gulp-replace": "1.1.4",
-		"gulp-terser": "2.1.0",
 		"js-yaml": "4.1.0"
 	},
 	"devDependencies": {
--- a/packages/README.md
+++ b/packages/README.md
@ -8,4 +8,5 @@ This directory contains all of the packages Firefish uses.
 - `client`: Web interface written in Vue3 and TypeScript
 - `sw`: Web [Service Worker](https://developer.mozilla.org/en-US/docs/Web/API/Service_Worker_API) written in TypeScript
 - `firefish-js`: TypeScript SDK for both backend and client
+- `i18n`: Typed i18n for client
 - `megalodon`: TypeScript library used for partial Mastodon API compatibility
--- a/packages/backend-rs/Cargo.toml
+++ b/packages/backend-rs/Cargo.toml
@ -26,13 +26,13 @@ cuid2 = { workspace = true }
 emojis = { workspace = true }
 idna = { workspace = true }
 image = { workspace = true }
+isahc = { workspace = true }
 nom-exif = { workspace = true }
 once_cell = { workspace = true }
 openssl = { workspace = true, features = ["vendored"] }
 rand = { workspace = true }
 redis = { workspace = true }
 regex = { workspace = true }
-reqwest = { workspace = true, features = ["blocking"] }
 rmp-serde = { workspace = true }
 sea-orm = { workspace = true, features = ["sqlx-postgres", "runtime-tokio-rustls"] }
 serde = { workspace = true, features = ["derive"] }
--- a/packages/backend-rs/index.d.ts
+++ b/packages/backend-rs/index.d.ts
@ -214,19 +214,26 @@ export function stringToAcct(acct: string): Acct
 export function acctToString(acct: Acct): string
 export function addNoteToAntenna(antennaId: string, note: Note): void
 /**
- * @param host punycoded instance host
- * @returns whether the given host should be blocked
-*/
+ * Checks if a server is blocked.
+ *
+ * ## Argument
+ * `host` - punycoded instance host
+ */
 export function isBlockedServer(host: string): Promise<boolean>
 /**
- * @param host punycoded instance host
- * @returns whether the given host should be limited
-*/
+ * Checks if a server is silenced.
+ *
+ * ## Argument
+ * `host` - punycoded instance host
+ */
 export function isSilencedServer(host: string): Promise<boolean>
 /**
- * @param host punycoded instance host
- * @returns whether the given host is allowlisted (this is always true if private mode is disabled)
-*/
+ * Checks if a server is allowlisted.
+ * Returns `Ok(true)` if private mode is disabled.
+ *
+ * ## Argument
+ * `host` - punycoded instance host
+ */
 export function isAllowedServer(host: string): Promise<boolean>
 /** TODO: handle name collisions better */
 export interface NoteLikeForCheckWordMute {
@ -261,6 +268,7 @@ export interface NoteLikeForGetNoteSummary {
  hasPoll: boolean
 }
 export function getNoteSummary(note: NoteLikeForGetNoteSummary): string
+export function isSafeUrl(url: string): boolean
 export function latestVersion(): Promise<string>
 export function toMastodonId(firefishId: string): string | null
 export function fromMastodonId(mastodonId: string): string | null
@ -1122,6 +1130,7 @@ export interface UserProfile {
  preventAiLearning: boolean
  isIndexable: boolean
  mutedPatterns: Array<string>
+  lang: string | null
 }
 export interface UserPublickey {
  userId: string
@ -1148,6 +1157,106 @@ export interface Webhook {
  latestStatus: number | null
 }
 export function initializeRustLogger(): void
+export function fetchNodeinfo(host: string): Promise<Nodeinfo>
+export function nodeinfo_2_1(): Promise<any>
+export function nodeinfo_2_0(): Promise<any>
+/** NodeInfo schema version 2.0. https://nodeinfo.diaspora.software/docson/index.html#/ns/schema/2.0 */
+export interface Nodeinfo {
+  /** The schema version, must be 2.0. */
+  version: string
+  /** Metadata about server software in use. */
+  software: Software20
+  /** The protocols supported on this server. */
+  protocols: Array<Protocol>
+  /** The third party sites this server can connect to via their application API. */
+  services: Services
+  /** Whether this server allows open self-registration. */
+  openRegistrations: boolean
+  /** Usage statistics for this server. */
+  usage: Usage
+  /** Free form key value pairs for software specific values. Clients should not rely on any specific key present. */
+  metadata: Record<string, any>
+}
+/** Metadata about server software in use (version 2.0). */
+export interface Software20 {
+  /** The canonical name of this server software. */
+  name: string
+  /** The version of this server software. */
+  version: string
+}
+export enum Protocol {
+  Activitypub = 'activitypub',
+  Buddycloud = 'buddycloud',
+  Dfrn = 'dfrn',
+  Diaspora = 'diaspora',
+  Libertree = 'libertree',
+  Ostatus = 'ostatus',
+  Pumpio = 'pumpio',
+  Tent = 'tent',
+  Xmpp = 'xmpp',
+  Zot = 'zot'
+}
+/** The third party sites this server can connect to via their application API. */
+export interface Services {
+  /** The third party sites this server can retrieve messages from for combined display with regular traffic. */
+  inbound: Array<Inbound>
+  /** The third party sites this server can publish messages to on the behalf of a user. */
+  outbound: Array<Outbound>
+}
+/** The third party sites this server can retrieve messages from for combined display with regular traffic. */
+export enum Inbound {
+  Atom1 = 'atom1',
+  Gnusocial = 'gnusocial',
+  Imap = 'imap',
+  Pnut = 'pnut',
+  Pop3 = 'pop3',
+  Pumpio = 'pumpio',
+  Rss2 = 'rss2',
+  Twitter = 'twitter'
+}
+/** The third party sites this server can publish messages to on the behalf of a user. */
+export enum Outbound {
+  Atom1 = 'atom1',
+  Blogger = 'blogger',
+  Buddycloud = 'buddycloud',
+  Diaspora = 'diaspora',
+  Dreamwidth = 'dreamwidth',
+  Drupal = 'drupal',
+  Facebook = 'facebook',
+  Friendica = 'friendica',
+  Gnusocial = 'gnusocial',
+  Google = 'google',
+  Insanejournal = 'insanejournal',
+  Libertree = 'libertree',
+  Linkedin = 'linkedin',
+  Livejournal = 'livejournal',
+  Mediagoblin = 'mediagoblin',
+  Myspace = 'myspace',
+  Pinterest = 'pinterest',
+  Pnut = 'pnut',
+  Posterous = 'posterous',
+  Pumpio = 'pumpio',
+  Redmatrix = 'redmatrix',
+  Rss2 = 'rss2',
+  Smtp = 'smtp',
+  Tent = 'tent',
+  Tumblr = 'tumblr',
+  Twitter = 'twitter',
+  Wordpress = 'wordpress',
+  Xmpp = 'xmpp'
+}
+/** Usage statistics for this server. */
+export interface Usage {
+  users: Users
+  localPosts: number | null
+  localComments: number | null
+}
+/** statistics about the users of this server. */
+export interface Users {
+  total: number | null
+  activeHalfyear: number | null
+  activeMonth: number | null
+}
 export function watchNote(watcherId: string, noteAuthorId: string, noteId: string): Promise<void>
 export function unwatchNote(watcherId: string, noteId: string): Promise<void>
 export function publishToChannelStream(channelId: string, userId: string): void
--- a/packages/backend-rs/index.js
+++ b/packages/backend-rs/index.js
@ -310,7 +310,7 @@ if (!nativeBinding) {
  throw new Error(`Failed to load native binding`)
 }

-const { SECOND, MINUTE, HOUR, DAY, USER_ONLINE_THRESHOLD, USER_ACTIVE_THRESHOLD, FILE_TYPE_BROWSERSAFE, loadEnv, loadConfig, stringToAcct, acctToString, addNoteToAntenna, isBlockedServer, isSilencedServer, isAllowedServer, checkWordMute, getFullApAccount, isSelfHost, isSameOrigin, extractHost, toPuny, isUnicodeEmoji, sqlLikeEscape, safeForSql, formatMilliseconds, getImageSizeFromUrl, getNoteSummary, latestVersion, toMastodonId, fromMastodonId, fetchMeta, metaToPugArgs, nyaify, hashPassword, verifyPassword, isOldPasswordAlgorithm, decodeReaction, countReactions, toDbReaction, removeOldAttestationChallenges, AntennaSrcEnum, DriveFileUsageHintEnum, MutedNoteReasonEnum, NoteVisibilityEnum, NotificationTypeEnum, PageVisibilityEnum, PollNotevisibilityEnum, RelayStatusEnum, UserEmojimodpermEnum, UserProfileFfvisibilityEnum, UserProfileMutingnotificationtypesEnum, initializeRustLogger, watchNote, unwatchNote, publishToChannelStream, ChatEvent, publishToChatStream, ChatIndexEvent, publishToChatIndexStream, publishToBroadcastStream, publishToGroupChatStream, publishToModerationStream, getTimestamp, genId, genIdAt, secureRndstr } = nativeBinding
+const { SECOND, MINUTE, HOUR, DAY, USER_ONLINE_THRESHOLD, USER_ACTIVE_THRESHOLD, FILE_TYPE_BROWSERSAFE, loadEnv, loadConfig, stringToAcct, acctToString, addNoteToAntenna, isBlockedServer, isSilencedServer, isAllowedServer, checkWordMute, getFullApAccount, isSelfHost, isSameOrigin, extractHost, toPuny, isUnicodeEmoji, sqlLikeEscape, safeForSql, formatMilliseconds, getImageSizeFromUrl, getNoteSummary, isSafeUrl, latestVersion, toMastodonId, fromMastodonId, fetchMeta, metaToPugArgs, nyaify, hashPassword, verifyPassword, isOldPasswordAlgorithm, decodeReaction, countReactions, toDbReaction, removeOldAttestationChallenges, AntennaSrcEnum, DriveFileUsageHintEnum, MutedNoteReasonEnum, NoteVisibilityEnum, NotificationTypeEnum, PageVisibilityEnum, PollNotevisibilityEnum, RelayStatusEnum, UserEmojimodpermEnum, UserProfileFfvisibilityEnum, UserProfileMutingnotificationtypesEnum, initializeRustLogger, fetchNodeinfo, nodeinfo_2_1, nodeinfo_2_0, Protocol, Inbound, Outbound, watchNote, unwatchNote, publishToChannelStream, ChatEvent, publishToChatStream, ChatIndexEvent, publishToChatIndexStream, publishToBroadcastStream, publishToGroupChatStream, publishToModerationStream, getTimestamp, genId, genIdAt, secureRndstr } = nativeBinding

 module.exports.SECOND = SECOND
 module.exports.MINUTE = MINUTE
@ -339,6 +339,7 @@ module.exports.safeForSql = safeForSql
 module.exports.formatMilliseconds = formatMilliseconds
 module.exports.getImageSizeFromUrl = getImageSizeFromUrl
 module.exports.getNoteSummary = getNoteSummary
+module.exports.isSafeUrl = isSafeUrl
 module.exports.latestVersion = latestVersion
 module.exports.toMastodonId = toMastodonId
 module.exports.fromMastodonId = fromMastodonId
@ -364,6 +365,12 @@ module.exports.UserEmojimodpermEnum = UserEmojimodpermEnum
 module.exports.UserProfileFfvisibilityEnum = UserProfileFfvisibilityEnum
 module.exports.UserProfileMutingnotificationtypesEnum = UserProfileMutingnotificationtypesEnum
 module.exports.initializeRustLogger = initializeRustLogger
+module.exports.fetchNodeinfo = fetchNodeinfo
+module.exports.nodeinfo_2_1 = nodeinfo_2_1
+module.exports.nodeinfo_2_0 = nodeinfo_2_0
+module.exports.Protocol = Protocol
+module.exports.Inbound = Inbound
+module.exports.Outbound = Outbound
 module.exports.watchNote = watchNote
 module.exports.unwatchNote = unwatchNote
 module.exports.publishToChannelStream = publishToChannelStream
--- a/packages/backend-rs/src/misc/check_server_block.rs
+++ b/packages/backend-rs/src/misc/check_server_block.rs
@ -1,10 +1,10 @@
 use crate::misc::meta::fetch_meta;
 use sea_orm::DbErr;

-/**
- * @param host punycoded instance host
- * @returns whether the given host should be blocked
- */
+/// Checks if a server is blocked.
+///
+/// ## Argument
+/// `host` - punycoded instance host
 #[crate::export]
 pub async fn is_blocked_server(host: &str) -> Result<bool, DbErr> {
    Ok(fetch_meta(true)
@ -16,10 +16,10 @@ pub async fn is_blocked_server(host: &str) -> Result<bool, DbErr> {
        }))
 }

-/**
- * @param host punycoded instance host
- * @returns whether the given host should be limited
- */
+/// Checks if a server is silenced.
+///
+/// ## Argument
+/// `host` - punycoded instance host
 #[crate::export]
 pub async fn is_silenced_server(host: &str) -> Result<bool, DbErr> {
    Ok(fetch_meta(true)
@ -31,10 +31,11 @@ pub async fn is_silenced_server(host: &str) -> Result<bool, DbErr> {
        }))
 }

-/**
- * @param host punycoded instance host
- * @returns whether the given host is allowlisted (this is always true if private mode is disabled)
- */
+/// Checks if a server is allowlisted.
+/// Returns `Ok(true)` if private mode is disabled.
+///
+/// ## Argument
+/// `host` - punycoded instance host
 #[crate::export]
 pub async fn is_allowed_server(host: &str) -> Result<bool, DbErr> {
    let meta = fetch_meta(true).await?;
--- a/packages/backend-rs/src/misc/get_image_size.rs
+++ b/packages/backend-rs/src/misc/get_image_size.rs
@ -1,6 +1,7 @@
 use crate::database::cache;
 use crate::util::http_client;
 use image::{io::Reader, ImageError, ImageFormat};
+use isahc::ReadResponseExt;
 use nom_exif::{parse_jpeg_exif, EntryValue, ExifTag};
 use std::io::Cursor;
 use tokio::sync::Mutex;
@ -9,8 +10,12 @@ use tokio::sync::Mutex;
 pub enum Error {
    #[error("Redis cache error: {0}")]
    CacheErr(#[from] cache::Error),
-    #[error("Reqwest error: {0}")]
-    ReqwestErr(#[from] reqwest::Error),
+    #[error("HTTP client aquisition error: {0}")]
+    HttpClientErr(#[from] http_client::Error),
+    #[error("Isahc error: {0}")]
+    IsahcErr(#[from] isahc::Error),
+    #[error("HTTP error: {0}")]
+    HttpErr(String),
    #[error("Image decoding error: {0}")]
    ImageErr(#[from] ImageError),
    #[error("Image decoding error: {0}")]
@ -64,7 +69,16 @@ pub async fn get_image_size_from_url(url: &str) -> Result<ImageSize, Error> {

    tracing::info!("retrieving image size from {}", url);

-    let image_bytes = http_client()?.get(url).send().await?.bytes().await?;
+    let mut response = http_client::client()?.get(url)?;
+
+    if !response.status().is_success() {
+        tracing::info!("status: {}", response.status());
+        tracing::debug!("response body: {:#?}", response.body());
+        return Err(Error::HttpErr(format!("Failed to get image from {}", url)));
+    }
+
+    let image_bytes = response.bytes()?;
+
    let reader = Reader::new(Cursor::new(&image_bytes)).with_guessed_format()?;

    let format = reader.format();
--- a/packages/backend-rs/src/misc/is_safe_url.rs
+++ b/packages/backend-rs/src/misc/is_safe_url.rs
@ -0,0 +1,34 @@
+#[crate::export]
+pub fn is_safe_url(url: &str) -> bool {
+    if let Ok(url) = url.parse::<url::Url>() {
+        if url.host_str().unwrap_or_default() == "unix"
+            || !["http", "https"].contains(&url.scheme())
+            || ![None, Some(80), Some(443)].contains(&url.port())
+        {
+            return false;
+        }
+        true
+    } else {
+        false
+    }
+}
+
+#[cfg(test)]
+mod unit_test {
+    use super::is_safe_url;
+
+    #[test]
+    fn safe_url() {
+        assert!(is_safe_url("http://firefish.dev/firefish/firefish"));
+        assert!(is_safe_url("https://firefish.dev/firefish/firefish"));
+        assert!(is_safe_url("http://firefish.dev:80/firefish/firefish"));
+        assert!(is_safe_url("https://firefish.dev:80/firefish/firefish"));
+        assert!(is_safe_url("http://firefish.dev:443/firefish/firefish"));
+        assert!(is_safe_url("https://firefish.dev:443/firefish/firefish"));
+        assert!(!is_safe_url("https://unix/firefish/firefish"));
+        assert!(!is_safe_url("https://firefish.dev:35/firefish/firefish"));
+        assert!(!is_safe_url("ftp://firefish.dev/firefish/firefish"));
+        assert!(!is_safe_url("nyaa"));
+        assert!(!is_safe_url(""));
+    }
+}
--- a/packages/backend-rs/src/misc/latest_version.rs
+++ b/packages/backend-rs/src/misc/latest_version.rs
@ -1,13 +1,20 @@
 use crate::database::cache;
-use crate::util::http_client::http_client;
+use crate::util::http_client;
+use isahc::ReadResponseExt;
 use serde::{Deserialize, Serialize};

 #[derive(thiserror::Error, Debug)]
 pub enum Error {
    #[error("Cache error: {0}")]
    CacheErr(#[from] cache::Error),
-    #[error("Reqwest error: {0}")]
-    ReqwestErr(#[from] reqwest::Error),
+    #[error("Isahc error: {0}")]
+    IsahcErr(#[from] isahc::Error),
+    #[error("HTTP client aquisition error: {0}")]
+    HttpClientErr(#[from] http_client::Error),
+    #[error("HTTP error: {0}")]
+    HttpErr(String),
+    #[error("Response parsing error: {0}")]
+    IoErr(#[from] std::io::Error),
    #[error("Failed to deserialize JSON: {0}")]
    JsonErr(#[from] serde_json::Error),
 }
@ -21,13 +28,17 @@ async fn get_latest_version() -> Result<String, Error> {
        version: String,
    }

-    let res = http_client()?
-        .get(UPSTREAM_PACKAGE_JSON_URL)
-        .send()
-        .await?
-        .text()
-        .await?;
-    let res_parsed: Response = serde_json::from_str(&res)?;
+    let mut response = http_client::client()?.get(UPSTREAM_PACKAGE_JSON_URL)?;
+
+    if !response.status().is_success() {
+        tracing::info!("status: {}", response.status());
+        tracing::debug!("response body: {:#?}", response.body());
+        return Err(Error::HttpErr(
+            "Failed to fetch version from Firefish GitLab".to_string(),
+        ));
+    }
+
+    let res_parsed: Response = serde_json::from_str(&response.text()?)?;

    Ok(res_parsed.version)
 }
--- a/packages/backend-rs/src/misc/mod.rs
+++ b/packages/backend-rs/src/misc/mod.rs
@ -8,6 +8,7 @@ pub mod escape_sql;
 pub mod format_milliseconds;
 pub mod get_image_size;
 pub mod get_note_summary;
+pub mod is_safe_url;
 pub mod latest_version;
 pub mod mastodon_id;
 pub mod meta;
--- a/packages/backend-rs/src/model/entity/user_profile.rs
+++ b/packages/backend-rs/src/model/entity/user_profile.rs
@ -78,6 +78,7 @@ pub struct Model {
    pub is_indexable: bool,
    #[sea_orm(column_name = "mutedPatterns")]
    pub muted_patterns: Vec<String>,
+    pub lang: Option<String>,
 }

 #[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
--- a/packages/backend-rs/src/service/mod.rs
+++ b/packages/backend-rs/src/service/mod.rs
@ -1,3 +1,4 @@
 pub mod log;
+pub mod nodeinfo;
 pub mod note;
 pub mod stream;
--- a/packages/backend-rs/src/service/nodeinfo/fetch.rs
+++ b/packages/backend-rs/src/service/nodeinfo/fetch.rs
@ -0,0 +1,161 @@
+use crate::service::nodeinfo::schema::*;
+use crate::util::http_client;
+use isahc::AsyncReadResponseExt;
+use serde::{Deserialize, Serialize};
+
+#[derive(thiserror::Error, Debug)]
+pub enum Error {
+    #[error("Http client aquisition error: {0}")]
+    HttpClientErr(#[from] http_client::Error),
+    #[error("Http error: {0}")]
+    HttpErr(#[from] isahc::Error),
+    #[error("Bad status: {0}")]
+    BadStatus(String),
+    #[error("Failed to parse response body as text: {0}")]
+    ResponseErr(#[from] std::io::Error),
+    #[error("Failed to parse response body as json: {0}")]
+    JsonErr(#[from] serde_json::Error),
+    #[error("No nodeinfo provided")]
+    MissingNodeinfo,
+}
+
+#[derive(Deserialize, Serialize, Debug)]
+pub struct NodeinfoLinks {
+    links: Vec<NodeinfoLink>,
+}
+
+#[derive(Deserialize, Serialize, Debug)]
+pub struct NodeinfoLink {
+    rel: String,
+    href: String,
+}
+
+#[inline]
+fn wellknown_nodeinfo_url(host: &str) -> String {
+    format!("https://{}/.well-known/nodeinfo", host)
+}
+
+async fn fetch_nodeinfo_links(host: &str) -> Result<NodeinfoLinks, Error> {
+    let client = http_client::client()?;
+    let wellknown_url = wellknown_nodeinfo_url(host);
+    let mut wellknown_response = client.get_async(&wellknown_url).await?;
+
+    if !wellknown_response.status().is_success() {
+        tracing::debug!("{:#?}", wellknown_response.body());
+        return Err(Error::BadStatus(format!(
+            "{} returned {}",
+            wellknown_url,
+            wellknown_response.status()
+        )));
+    }
+
+    Ok(serde_json::from_str(&wellknown_response.text().await?)?)
+}
+
+fn check_nodeinfo_link(links: NodeinfoLinks) -> Result<String, Error> {
+    for link in links.links {
+        if link.rel == "http://nodeinfo.diaspora.software/ns/schema/2.1"
+            || link.rel == "http://nodeinfo.diaspora.software/ns/schema/2.0"
+        {
+            return Ok(link.href);
+        }
+    }
+
+    Err(Error::MissingNodeinfo)
+}
+
+async fn fetch_nodeinfo_impl(nodeinfo_link: &str) -> Result<Nodeinfo20, Error> {
+    let client = http_client::client()?;
+    let mut response = client.get_async(nodeinfo_link).await?;
+
+    if !response.status().is_success() {
+        tracing::debug!("{:#?}", response.body());
+        return Err(Error::BadStatus(format!(
+            "{} returned {}",
+            nodeinfo_link,
+            response.status()
+        )));
+    }
+
+    Ok(serde_json::from_str(&response.text().await?)?)
+}
+
+// for napi export
+type Nodeinfo = Nodeinfo20;
+
+#[crate::export]
+pub async fn fetch_nodeinfo(host: &str) -> Result<Nodeinfo, Error> {
+    tracing::info!("fetching from {}", host);
+    let links = fetch_nodeinfo_links(host).await?;
+    let nodeinfo_link = check_nodeinfo_link(links)?;
+    fetch_nodeinfo_impl(&nodeinfo_link).await
+}
+
+#[cfg(test)]
+mod unit_test {
+    use super::{check_nodeinfo_link, fetch_nodeinfo, NodeinfoLink, NodeinfoLinks};
+    use pretty_assertions::assert_eq;
+
+    #[test]
+    fn test_check_nodeinfo_link() {
+        let links_1 = NodeinfoLinks {
+            links: vec![
+                NodeinfoLink {
+                    rel: "https://example.com/incorrect/schema/2.0".to_string(),
+                    href: "https://example.com/dummy".to_string(),
+                },
+                NodeinfoLink {
+                    rel: "http://nodeinfo.diaspora.software/ns/schema/2.0".to_string(),
+                    href: "https://example.com/real".to_string(),
+                },
+            ],
+        };
+        assert_eq!(
+            check_nodeinfo_link(links_1).unwrap(),
+            "https://example.com/real"
+        );
+
+        let links_2 = NodeinfoLinks {
+            links: vec![
+                NodeinfoLink {
+                    rel: "https://example.com/incorrect/schema/2.0".to_string(),
+                    href: "https://example.com/dummy".to_string(),
+                },
+                NodeinfoLink {
+                    rel: "http://nodeinfo.diaspora.software/ns/schema/2.1".to_string(),
+                    href: "https://example.com/real".to_string(),
+                },
+            ],
+        };
+        assert_eq!(
+            check_nodeinfo_link(links_2).unwrap(),
+            "https://example.com/real"
+        );
+
+        let links_3 = NodeinfoLinks {
+            links: vec![
+                NodeinfoLink {
+                    rel: "https://example.com/incorrect/schema/2.0".to_string(),
+                    href: "https://example.com/dummy/2.0".to_string(),
+                },
+                NodeinfoLink {
+                    rel: "https://example.com/incorrect/schema/2.1".to_string(),
+                    href: "https://example.com/dummy/2.1".to_string(),
+                },
+            ],
+        };
+        check_nodeinfo_link(links_3).expect_err("No nodeinfo");
+    }
+
+    #[tokio::test]
+    async fn test_fetch_nodeinfo() {
+        assert_eq!(
+            fetch_nodeinfo("info.firefish.dev")
+                .await
+                .unwrap()
+                .software
+                .name,
+            "firefish"
+        );
+    }
+}
--- a/packages/backend-rs/src/service/nodeinfo/generate.rs
+++ b/packages/backend-rs/src/service/nodeinfo/generate.rs
@ -0,0 +1,142 @@
+use crate::config::CONFIG;
+use crate::database::cache;
+use crate::database::db_conn;
+use crate::misc::meta::fetch_meta;
+use crate::model::entity::{note, user};
+use crate::service::nodeinfo::schema::*;
+use sea_orm::{ColumnTrait, DbErr, EntityTrait, PaginatorTrait, QueryFilter};
+use serde_json::json;
+use std::collections::HashMap;
+
+#[derive(thiserror::Error, Debug)]
+pub enum Error {
+    #[error("Database error: {0}")]
+    DbErr(#[from] DbErr),
+    #[error("Cache error: {0}")]
+    CacheErr(#[from] cache::Error),
+    #[error("Failed to serialize nodeinfo to JSON: {0}")]
+    JsonErr(#[from] serde_json::Error),
+}
+
+async fn statistics() -> Result<(u64, u64, u64, u64), DbErr> {
+    let db = db_conn().await?;
+
+    let now = chrono::Local::now().naive_local();
+    const MONTH: chrono::TimeDelta = chrono::Duration::seconds(2592000000);
+    const HALF_YEAR: chrono::TimeDelta = chrono::Duration::seconds(15552000000);
+
+    let local_users = user::Entity::find()
+        .filter(user::Column::Host.is_null())
+        .count(db);
+    let local_active_halfyear = user::Entity::find()
+        .filter(user::Column::Host.is_null())
+        .filter(user::Column::LastActiveDate.gt(now - HALF_YEAR))
+        .count(db);
+    let local_active_month = user::Entity::find()
+        .filter(user::Column::Host.is_null())
+        .filter(user::Column::LastActiveDate.gt(now - MONTH))
+        .count(db);
+    let local_posts = note::Entity::find()
+        .filter(note::Column::UserHost.is_null())
+        .count(db);
+
+    tokio::try_join!(
+        local_users,
+        local_active_halfyear,
+        local_active_month,
+        local_posts
+    )
+}
+
+async fn generate_nodeinfo_2_1() -> Result<Nodeinfo21, Error> {
+    let (local_users, local_active_halfyear, local_active_month, local_posts) =
+        statistics().await?;
+    let meta = fetch_meta(true).await?;
+    let metadata = HashMap::from([
+        (
+            "nodeName".to_string(),
+            json!(meta.name.unwrap_or(CONFIG.host.clone())),
+        ),
+        ("nodeDescription".to_string(), json!(meta.description)),
+        ("repositoryUrl".to_string(), json!(meta.repository_url)),
+        (
+            "enableLocalTimeline".to_string(),
+            json!(!meta.disable_local_timeline),
+        ),
+        (
+            "enableRecommendedTimeline".to_string(),
+            json!(!meta.disable_recommended_timeline),
+        ),
+        (
+            "enableGlobalTimeline".to_string(),
+            json!(!meta.disable_global_timeline),
+        ),
+        (
+            "enableGuestTimeline".to_string(),
+            json!(meta.enable_guest_timeline),
+        ),
+        (
+            "maintainer".to_string(),
+            json!({"name":meta.maintainer_name,"email":meta.maintainer_email}),
+        ),
+        ("proxyAccountName".to_string(), json!(meta.proxy_account_id)),
+        (
+            "themeColor".to_string(),
+            json!(meta.theme_color.unwrap_or("#31748f".to_string())),
+        ),
+    ]);
+
+    Ok(Nodeinfo21 {
+        version: "2.1".to_string(),
+        software: Software21 {
+            name: "firefish".to_string(),
+            version: CONFIG.version.clone(),
+            repository: Some(meta.repository_url),
+            homepage: Some("https://firefish.dev/firefish/firefish".to_string()),
+        },
+        protocols: vec![Protocol::Activitypub],
+        services: Services {
+            inbound: vec![],
+            outbound: vec![Outbound::Atom1, Outbound::Rss2],
+        },
+        open_registrations: !meta.disable_registration,
+        usage: Usage {
+            users: Users {
+                total: Some(local_users as u32),
+                active_halfyear: Some(local_active_halfyear as u32),
+                active_month: Some(local_active_month as u32),
+            },
+            local_posts: Some(local_posts as u32),
+            local_comments: None,
+        },
+        metadata,
+    })
+}
+
+pub async fn nodeinfo_2_1() -> Result<Nodeinfo21, Error> {
+    const NODEINFO_2_1_CACHE_KEY: &str = "nodeinfo_2_1";
+
+    let cached = cache::get::<Nodeinfo21>(NODEINFO_2_1_CACHE_KEY)?;
+
+    if let Some(nodeinfo) = cached {
+        Ok(nodeinfo)
+    } else {
+        let nodeinfo = generate_nodeinfo_2_1().await?;
+        cache::set(NODEINFO_2_1_CACHE_KEY, &nodeinfo, 60 * 60)?;
+        Ok(nodeinfo)
+    }
+}
+
+pub async fn nodeinfo_2_0() -> Result<Nodeinfo20, Error> {
+    Ok(nodeinfo_2_1().await?.into())
+}
+
+#[crate::export(js_name = "nodeinfo_2_1")]
+pub async fn nodeinfo_2_1_as_json() -> Result<serde_json::Value, Error> {
+    Ok(serde_json::to_value(nodeinfo_2_1().await?)?)
+}
+
+#[crate::export(js_name = "nodeinfo_2_0")]
+pub async fn nodeinfo_2_0_as_json() -> Result<serde_json::Value, Error> {
+    Ok(serde_json::to_value(nodeinfo_2_0().await?)?)
+}
--- a/packages/backend-rs/src/service/nodeinfo/mod.rs
+++ b/packages/backend-rs/src/service/nodeinfo/mod.rs
@ -0,0 +1,3 @@
+pub mod fetch;
+pub mod generate;
+pub mod schema;
--- a/packages/backend-rs/src/service/nodeinfo/schema.rs
+++ b/packages/backend-rs/src/service/nodeinfo/schema.rs
@ -0,0 +1,263 @@
+use serde::{Deserialize, Serialize};
+use std::collections::HashMap;
+
+// TODO: I want to use these macros but they don't work with rmp_serde
+// - #[serde(skip_serializing_if = "Option::is_none")] (https://github.com/3Hren/msgpack-rust/issues/86)
+// - #[serde(tag = "version", rename = "2.1")] (https://github.com/3Hren/msgpack-rust/issues/318)
+
+/// NodeInfo schema version 2.1. https://nodeinfo.diaspora.software/docson/index.html#/ns/schema/2.1
+#[derive(Deserialize, Serialize, Debug, PartialEq)]
+#[serde(rename_all = "camelCase")]
+pub struct Nodeinfo21 {
+    /// The schema version, must be 2.1.
+    pub version: String,
+    /// Metadata about server software in use.
+    pub software: Software21,
+    /// The protocols supported on this server.
+    pub protocols: Vec<Protocol>,
+    /// The third party sites this server can connect to via their application API.
+    pub services: Services,
+    /// Whether this server allows open self-registration.
+    pub open_registrations: bool,
+    /// Usage statistics for this server.
+    pub usage: Usage,
+    /// Free form key value pairs for software specific values. Clients should not rely on any specific key present.
+    pub metadata: HashMap<String, serde_json::Value>,
+}
+
+/// NodeInfo schema version 2.0. https://nodeinfo.diaspora.software/docson/index.html#/ns/schema/2.0
+#[derive(Deserialize, Serialize, Debug, PartialEq)]
+#[serde(rename_all = "camelCase")]
+#[crate::export(object, js_name = "Nodeinfo")]
+pub struct Nodeinfo20 {
+    /// The schema version, must be 2.0.
+    pub version: String,
+    /// Metadata about server software in use.
+    pub software: Software20,
+    /// The protocols supported on this server.
+    pub protocols: Vec<Protocol>,
+    /// The third party sites this server can connect to via their application API.
+    pub services: Services,
+    /// Whether this server allows open self-registration.
+    pub open_registrations: bool,
+    /// Usage statistics for this server.
+    pub usage: Usage,
+    /// Free form key value pairs for software specific values. Clients should not rely on any specific key present.
+    pub metadata: HashMap<String, serde_json::Value>,
+}
+
+/// Metadata about server software in use (version 2.1).
+#[derive(Deserialize, Serialize, Debug, PartialEq)]
+#[serde(rename_all = "camelCase")]
+pub struct Software21 {
+    /// The canonical name of this server software.
+    pub name: String,
+    /// The version of this server software.
+    pub version: String,
+    /// The url of the source code repository of this server software.
+    pub repository: Option<String>,
+    /// The url of the homepage of this server software.
+    pub homepage: Option<String>,
+}
+
+/// Metadata about server software in use (version 2.0).
+#[derive(Deserialize, Serialize, Debug, PartialEq)]
+#[serde(rename_all = "camelCase")]
+#[crate::export(object)]
+pub struct Software20 {
+    /// The canonical name of this server software.
+    pub name: String,
+    /// The version of this server software.
+    pub version: String,
+}
+
+#[derive(Deserialize, Serialize, Debug, PartialEq)]
+#[serde(rename_all = "lowercase")]
+#[crate::export(string_enum = "lowercase")]
+pub enum Protocol {
+    Activitypub,
+    Buddycloud,
+    Dfrn,
+    Diaspora,
+    Libertree,
+    Ostatus,
+    Pumpio,
+    Tent,
+    Xmpp,
+    Zot,
+}
+
+/// The third party sites this server can connect to via their application API.
+#[derive(Deserialize, Serialize, Debug, PartialEq)]
+#[serde(rename_all = "camelCase")]
+#[crate::export(object)]
+pub struct Services {
+    /// The third party sites this server can retrieve messages from for combined display with regular traffic.
+    pub inbound: Vec<Inbound>,
+    /// The third party sites this server can publish messages to on the behalf of a user.
+    pub outbound: Vec<Outbound>,
+}
+
+/// The third party sites this server can retrieve messages from for combined display with regular traffic.
+#[derive(Deserialize, Serialize, Debug, PartialEq)]
+#[serde(rename_all = "lowercase")]
+#[crate::export(string_enum = "lowercase")]
+pub enum Inbound {
+    #[serde(rename = "atom1.0")]
+    Atom1,
+    Gnusocial,
+    Imap,
+    Pnut,
+    #[serde(rename = "pop3")]
+    Pop3,
+    Pumpio,
+    #[serde(rename = "rss2.0")]
+    Rss2,
+    Twitter,
+}
+
+/// The third party sites this server can publish messages to on the behalf of a user.
+#[derive(Deserialize, Serialize, Debug, PartialEq)]
+#[serde(rename_all = "lowercase")]
+#[crate::export(string_enum = "lowercase")]
+pub enum Outbound {
+    #[serde(rename = "atom1.0")]
+    Atom1,
+    Blogger,
+    Buddycloud,
+    Diaspora,
+    Dreamwidth,
+    Drupal,
+    Facebook,
+    Friendica,
+    Gnusocial,
+    Google,
+    Insanejournal,
+    Libertree,
+    Linkedin,
+    Livejournal,
+    Mediagoblin,
+    Myspace,
+    Pinterest,
+    Pnut,
+    Posterous,
+    Pumpio,
+    Redmatrix,
+    #[serde(rename = "rss2.0")]
+    Rss2,
+    Smtp,
+    Tent,
+    Tumblr,
+    Twitter,
+    Wordpress,
+    Xmpp,
+}
+
+/// Usage statistics for this server.
+#[derive(Deserialize, Serialize, Debug, PartialEq)]
+#[serde(rename_all = "camelCase")]
+#[crate::export(object)]
+pub struct Usage {
+    pub users: Users,
+    pub local_posts: Option<u32>,
+    pub local_comments: Option<u32>,
+}
+
+/// statistics about the users of this server.
+#[derive(Deserialize, Serialize, Debug, PartialEq)]
+#[serde(rename_all = "camelCase")]
+#[crate::export(object)]
+pub struct Users {
+    pub total: Option<u32>,
+    pub active_halfyear: Option<u32>,
+    pub active_month: Option<u32>,
+}
+
+impl From<Software21> for Software20 {
+    fn from(software: Software21) -> Self {
+        Self {
+            name: software.name,
+            version: software.version,
+        }
+    }
+}
+
+impl From<Nodeinfo21> for Nodeinfo20 {
+    fn from(nodeinfo: Nodeinfo21) -> Self {
+        Self {
+            version: "2.0".to_string(),
+            software: nodeinfo.software.into(),
+            protocols: nodeinfo.protocols,
+            services: nodeinfo.services,
+            open_registrations: nodeinfo.open_registrations,
+            usage: nodeinfo.usage,
+            metadata: nodeinfo.metadata,
+        }
+    }
+}
+
+#[cfg(test)]
+mod unit_test {
+    use super::{Nodeinfo20, Nodeinfo21};
+    use pretty_assertions::assert_eq;
+
+    #[test]
+    fn parse_nodeinfo_2_0() {
+        let json_str_1 = r#"{"version":"2.0","software":{"name":"mastodon","version":"4.3.0-nightly.2024-04-30"},"protocols":["activitypub"],"services":{"outbound":[],"inbound":[]},"usage":{"users":{"total":1935016,"activeMonth":238223,"activeHalfyear":618795},"localPosts":90175135},"openRegistrations":true,"metadata":{"nodeName":"Mastodon","nodeDescription":"The original server operated by the Mastodon gGmbH non-profit"}}"#;
+        let parsed_1: Nodeinfo20 = serde_json::from_str(json_str_1).unwrap();
+        let serialized_1 = serde_json::to_string(&parsed_1).unwrap();
+        let reparsed_1: Nodeinfo20 = serde_json::from_str(&serialized_1).unwrap();
+
+        assert_eq!(parsed_1, reparsed_1);
+        assert_eq!(parsed_1.software.name, "mastodon");
+        assert_eq!(parsed_1.software.version, "4.3.0-nightly.2024-04-30");
+
+        let json_str_2 = r#"{"version":"2.0","software":{"name":"peertube","version":"5.0.0"},"protocols":["activitypub"],"services":{"inbound":[],"outbound":["atom1.0","rss2.0"]},"openRegistrations":false,"usage":{"users":{"total":5,"activeMonth":0,"activeHalfyear":2},"localPosts":1018,"localComments":1},"metadata":{"taxonomy":{"postsName":"Videos"},"nodeName":"Blender Video","nodeDescription":"Blender Foundation PeerTube instance.","nodeConfig":{"search":{"remoteUri":{"users":true,"anonymous":false}},"plugin":{"registered":[]},"theme":{"registered":[],"default":"default"},"email":{"enabled":false},"contactForm":{"enabled":true},"transcoding":{"hls":{"enabled":true},"webtorrent":{"enabled":true},"enabledResolutions":[1080]},"live":{"enabled":false,"transcoding":{"enabled":true,"enabledResolutions":[]}},"import":{"videos":{"http":{"enabled":true},"torrent":{"enabled":false}}},"autoBlacklist":{"videos":{"ofUsers":{"enabled":false}}},"avatar":{"file":{"size":{"max":4194304},"extensions":[".png",".jpeg",".jpg",".gif",".webp"]}},"video":{"image":{"extensions":[".png",".jpg",".jpeg",".webp"],"size":{"max":4194304}},"file":{"extensions":[".webm",".ogv",".ogg",".mp4",".mkv",".mov",".qt",".mqv",".m4v",".flv",".f4v",".wmv",".avi",".3gp",".3gpp",".3g2",".3gpp2",".nut",".mts",".m2ts",".mpv",".m2v",".m1v",".mpg",".mpe",".mpeg",".vob",".mxf",".mp3",".wma",".wav",".flac",".aac",".m4a",".ac3"]}},"videoCaption":{"file":{"size":{"max":20971520},"extensions":[".vtt",".srt"]}},"user":{"videoQuota":5368709120,"videoQuotaDaily":-1},"trending":{"videos":{"intervalDays":7}},"tracker":{"enabled":true}}}}"#;
+        let parsed_2: Nodeinfo20 = serde_json::from_str(json_str_2).unwrap();
+        let serialized_2 = serde_json::to_string(&parsed_2).unwrap();
+        let reparsed_2: Nodeinfo20 = serde_json::from_str(&serialized_2).unwrap();
+
+        assert_eq!(parsed_2, reparsed_2);
+        assert_eq!(parsed_2.software.name, "peertube");
+        assert_eq!(parsed_2.software.version, "5.0.0");
+
+        let json_str_3 = r#"{"metadata":{"nodeName":"pixelfed","software":{"homepage":"https://pixelfed.org","repo":"https://github.com/pixelfed/pixelfed"},"config":{"features":{"timelines":{"local":true,"network":true},"mobile_apis":true,"stories":true,"video":true,"import":{"instagram":false,"mastodon":false,"pixelfed":false},"label":{"covid":{"enabled":false,"org":"visit the WHO website","url":"https://www.who.int/emergencies/diseases/novel-coronavirus-2019/advice-for-public"}},"hls":{"enabled":false}}}},"protocols":["activitypub"],"services":{"inbound":[],"outbound":[]},"software":{"name":"pixelfed","version":"0.12.0"},"usage":{"localPosts":24059868,"localComments":0,"users":{"total":112832,"activeHalfyear":24366,"activeMonth":8921}},"version":"2.0","openRegistrations":true}"#;
+        let parsed_3: Nodeinfo20 = serde_json::from_str(json_str_3).unwrap();
+        let serialized_3 = serde_json::to_string(&parsed_3).unwrap();
+        let reparsed_3: Nodeinfo20 = serde_json::from_str(&serialized_3).unwrap();
+
+        assert_eq!(parsed_3, reparsed_3);
+        assert_eq!(parsed_3.software.name, "pixelfed");
+        assert_eq!(parsed_3.software.version, "0.12.0");
+    }
+
+    #[test]
+    fn parse_nodeinfo_2_1() {
+        let json_str_1 = r##"{"version":"2.1","software":{"name":"catodon","version":"24.04-dev.2","repository":"https://codeberg.org/catodon/catodon","homepage":"https://codeberg.org/catodon/catodon"},"protocols":["activitypub"],"services":{"inbound":[],"outbound":["atom1.0","rss2.0"]},"openRegistrations":true,"usage":{"users":{"total":294,"activeHalfyear":292,"activeMonth":139},"localPosts":22616,"localComments":0},"metadata":{"nodeName":"Catodon Social","nodeDescription":"🌎 Home of Catodon, a new platform for fedi communities, initially based on Iceshrimp/Firefish/Misskey. Be aware that our first release is not out yet, so things are still experimental.","maintainer":{"name":"admin","email":"redacted@example.com"},"langs":[],"tosUrl":"https://example.com/redacted","repositoryUrl":"https://codeberg.org/catodon/catodon","feedbackUrl":"https://codeberg.org/catodon/catodon/issues","disableRegistration":false,"disableLocalTimeline":false,"disableRecommendedTimeline":true,"disableGlobalTimeline":false,"emailRequiredForSignup":true,"postEditing":true,"postImports":false,"enableHcaptcha":true,"enableRecaptcha":false,"maxNoteTextLength":8000,"maxCaptionTextLength":1500,"enableGithubIntegration":false,"enableDiscordIntegration":false,"enableEmail":true,"themeColor":"#31748f"}}"##;
+        let parsed_1: Nodeinfo21 = serde_json::from_str(json_str_1).unwrap();
+        let serialized_1 = serde_json::to_string(&parsed_1).unwrap();
+        let reparsed_1: Nodeinfo21 = serde_json::from_str(&serialized_1).unwrap();
+
+        assert_eq!(parsed_1, reparsed_1);
+        assert_eq!(parsed_1.software.name, "catodon");
+        assert_eq!(parsed_1.software.version, "24.04-dev.2");
+
+        let json_str_2 = r#"{"version":"2.1","software":{"name":"meisskey","version":"10.102.699-m544","repository":"https://github.com/mei23/misskey"},"protocols":["activitypub"],"services":{"inbound":[],"outbound":["atom1.0","rss2.0"]},"openRegistrations":true,"usage":{"users":{"total":1123,"activeHalfyear":305,"activeMonth":89},"localPosts":268739,"localComments":0},"metadata":{"nodeName":"meisskey.one","nodeDescription":"ローカルタイムラインのないインスタンスなのだわ\n\n\n[通報・報告 (Report)](https://example.com/redacted)","name":"meisskey.one","description":"ローカルタイムラインのないインスタンスなのだわ\n\n\n[通報・報告 (Report)](https://example.com/redacted)","maintainer":{"name":"redacted","email":"redacted"},"langs":[],"announcements":[{"title":"問題・要望など","text":"問題・要望などは <a href=\"https://example.com/redacted\">#meisskeyone要望</a> で投稿してなのだわ"}],"relayActor":"https://example.com/redacted","relays":[],"disableRegistration":false,"disableLocalTimeline":true,"enableRecaptcha":true,"maxNoteTextLength":5000,"enableTwitterIntegration":false,"enableGithubIntegration":false,"enableDiscordIntegration":false,"enableServiceWorker":true,"proxyAccountName":"ghost"}}"#;
+        let parsed_2: Nodeinfo21 = serde_json::from_str(json_str_2).unwrap();
+        let serialized_2 = serde_json::to_string(&parsed_2).unwrap();
+        let reparsed_2: Nodeinfo21 = serde_json::from_str(&serialized_2).unwrap();
+
+        assert_eq!(parsed_2, reparsed_2);
+        assert_eq!(parsed_2.software.name, "meisskey");
+        assert_eq!(parsed_2.software.version, "10.102.699-m544");
+
+        let json_str_3 = r##"{"metadata":{"enableGlobalTimeline":true,"enableGuestTimeline":false,"enableLocalTimeline":true,"enableRecommendedTimeline":false,"maintainer":{"name":"Firefish dev team"},"nodeDescription":"","nodeName":"Firefish","repositoryUrl":"https://firefish.dev/firefish/firefish","themeColor":"#F25A85"},"openRegistrations":false,"protocols":["activitypub"],"services":{"inbound":[],"outbound":["atom1.0","rss2.0"]},"software":{"homepage":"https://firefish.dev/firefish/firefish","name":"firefish","repository":"https://firefish.dev/firefish/firefish","version":"20240504"},"usage":{"localPosts":23857,"users":{"activeHalfyear":7,"activeMonth":7,"total":9}},"version":"2.1"}"##;
+        let parsed_3: Nodeinfo20 = serde_json::from_str(json_str_3).unwrap();
+        let serialized_3 = serde_json::to_string(&parsed_3).unwrap();
+        let reparsed_3: Nodeinfo20 = serde_json::from_str(&serialized_3).unwrap();
+
+        assert_eq!(parsed_3, reparsed_3);
+        assert_eq!(parsed_3.software.name, "firefish");
+        assert_eq!(parsed_3.software.version, "20240504");
+    }
+}
--- a/packages/backend-rs/src/util/http_client.rs
+++ b/packages/backend-rs/src/util/http_client.rs
@ -1,24 +1,34 @@
 use crate::config::CONFIG;
+use isahc::{config::*, HttpClient};
 use once_cell::sync::OnceCell;
-use reqwest::{Client, Error, NoProxy, Proxy};
 use std::time::Duration;

-static CLIENT: OnceCell<Client> = OnceCell::new();
+#[derive(thiserror::Error, Debug)]
+pub enum Error {
+    #[error("Isahc error: {0}")]
+    IsahcErr(#[from] isahc::Error),
+    #[error("Url parse error: {0}")]
+    UrlParseErr(#[from] isahc::http::uri::InvalidUri),
+}

-pub fn http_client() -> Result<Client, Error> {
+static CLIENT: OnceCell<HttpClient> = OnceCell::new();
+
+pub fn client() -> Result<HttpClient, Error> {
    CLIENT
        .get_or_try_init(|| {
-            let mut builder = Client::builder().timeout(Duration::from_secs(5));
+            let mut builder = HttpClient::builder()
+                .timeout(Duration::from_secs(10))
+                .default_header("user-agent", &CONFIG.user_agent)
+                .dns_cache(DnsCache::Timeout(Duration::from_secs(60 * 60)));

            if let Some(proxy_url) = &CONFIG.proxy {
-                let mut proxy = Proxy::all(proxy_url)?;
+                builder = builder.proxy(Some(proxy_url.parse()?));
                if let Some(proxy_bypass_hosts) = &CONFIG.proxy_bypass_hosts {
-                    proxy = proxy.no_proxy(NoProxy::from_string(&proxy_bypass_hosts.join(",")));
+                    builder = builder.proxy_blacklist(proxy_bypass_hosts);
                }
-                builder = builder.proxy(proxy);
            }

-            builder.build()
+            Ok(builder.build()?)
        })
        .cloned()
 }
--- a/packages/backend-rs/src/util/mod.rs
+++ b/packages/backend-rs/src/util/mod.rs
@ -1,5 +1,3 @@
-pub use http_client::http_client;
-
 pub mod http_client;
 pub mod id;
 pub mod random;
--- a/packages/backend/src/migration/1714888400293-add-user-profile-language.ts
+++ b/packages/backend/src/migration/1714888400293-add-user-profile-language.ts
@ -0,0 +1,13 @@
+import type { MigrationInterface, QueryRunner } from "typeorm";
+
+export class AddUserProfileLanguage1714888400293 implements MigrationInterface {
+	async up(queryRunner: QueryRunner): Promise<void> {
+		await queryRunner.query(
+			`ALTER TABLE "user_profile" ADD COLUMN "lang" character varying(32)`,
+		);
+	}
+
+	async down(queryRunner: QueryRunner): Promise<void> {
+		await queryRunner.query(`ALTER TABLE "user_profile" DROP COLUMN "lang"`);
+	}
+}
--- a/packages/backend/src/misc/download-url.ts
+++ b/packages/backend/src/misc/download-url.ts
@ -7,10 +7,10 @@ import chalk from "chalk";
 import Logger from "@/services/logger.js";
 import IPCIDR from "ip-cidr";
 import PrivateIp from "private-ip";
-import { isValidUrl } from "./is-valid-url.js";
+import { isSafeUrl } from "backend-rs";

 export async function downloadUrl(url: string, path: string): Promise<void> {
-	if (!isValidUrl(url)) {
+	if (!isSafeUrl(url)) {
 		throw new StatusError("Invalid URL", 400);
 	}

@ -43,8 +43,8 @@ export async function downloadUrl(url: string, path: string): Promise<void> {
 				limit: 0,
 			},
 		})
-		.on("redirect", (res: Got.Response, opts: Got.NormalizedOptions) => {
-			if (!isValidUrl(opts.url)) {
+		.on("redirect", (_res: Got.Response, opts: Got.NormalizedOptions) => {
+			if (!isSafeUrl(opts.url)) {
 				downloadLogger.warn(`Invalid URL: ${opts.url}`);
 				req.destroy();
 			}
--- a/packages/backend/src/misc/fetch.ts
+++ b/packages/backend/src/misc/fetch.ts
@ -5,7 +5,7 @@ import CacheableLookup from "cacheable-lookup";
 import fetch, { type RequestRedirect } from "node-fetch";
 import { HttpProxyAgent, HttpsProxyAgent } from "hpagent";
 import { config } from "@/config.js";
-import { isValidUrl } from "./is-valid-url.js";
+import { isSafeUrl } from "backend-rs";

 export async function getJson(
 	url: string,
@ -60,7 +60,7 @@ export async function getResponse(args: {
 	size?: number;
 	redirect?: RequestRedirect;
 }) {
-	if (!isValidUrl(args.url)) {
+	if (!isSafeUrl(args.url)) {
 		throw new StatusError("Invalid URL", 400);
 	}

@ -83,7 +83,7 @@ export async function getResponse(args: {
 	});

 	if (args.redirect === "manual" && [301, 302, 307, 308].includes(res.status)) {
-		if (!isValidUrl(res.url)) {
+		if (!isSafeUrl(res.url)) {
 			throw new StatusError("Invalid URL", 400);
 		}
 		return res;
--- a/packages/backend/src/misc/is-valid-url.ts
+++ b/packages/backend/src/misc/is-valid-url.ts
@ -1,20 +0,0 @@
-export function isValidUrl(url: string | URL | undefined): boolean {
-	if (process.env.NODE_ENV !== "production") return true;
-
-	try {
-		if (url == null) return false;
-
-		const u = typeof url === "string" ? new URL(url) : url;
-		if (!u.protocol.match(/^https?:$/) || u.hostname === "unix") {
-			return false;
-		}
-
-		if (u.port !== "" && !["80", "443"].includes(u.port)) {
-			return false;
-		}
-
-		return true;
-	} catch {
-		return false;
-	}
-}
--- a/packages/backend/src/models/entities/user-profile.ts
+++ b/packages/backend/src/models/entities/user-profile.ts
@ -50,6 +50,12 @@ export class UserProfile {
 		verified?: boolean;
 	}[];

+	@Column("varchar", {
+		length: 32,
+		nullable: true,
+	})
+	public lang: string | null;
+
 	@Column("varchar", {
 		length: 512,
 		nullable: true,
--- a/packages/backend/src/models/repositories/user.ts
+++ b/packages/backend/src/models/repositories/user.ts
@ -512,6 +512,7 @@ export const UserRepository = db.getRepository(User).extend({
 						description: profile!.description,
 						location: profile!.location,
 						birthday: profile!.birthday,
+						lang: profile!.lang,
 						fields: profile!.fields,
 						followersCount: followersCount ?? null,
 						followingCount: followingCount ?? null,
--- a/packages/backend/src/models/schema/user.ts
+++ b/packages/backend/src/models/schema/user.ts
@ -204,6 +204,12 @@ export const packedUserDetailedNotMeOnlySchema = {
 			optional: false,
 			example: "2018-03-12",
 		},
+		lang: {
+			type: "string",
+			nullable: true,
+			optional: false,
+			example: "ja-JP",
+		},
 		fields: {
 			type: "array",
 			nullable: false,
--- a/packages/backend/src/prelude/undefined-to-null.ts
+++ b/packages/backend/src/prelude/undefined-to-null.ts
@ -1,7 +1,7 @@
 // https://gist.github.com/tkrotoff/a6baf96eb6b61b445a9142e5555511a0
 import type { Primitive } from "type-fest";

-type NullToUndefined<T> = T extends null
+export type NullToUndefined<T> = T extends null
 	? undefined
 	: T extends Primitive | Function | Date | RegExp
 		? T
@ -15,7 +15,7 @@ type NullToUndefined<T> = T extends null
 						? { [K in keyof T]: NullToUndefined<T[K]> }
 						: unknown;

-type UndefinedToNull<T> = T extends undefined
+export type UndefinedToNull<T> = T extends undefined
 	? null
 	: T extends Primitive | Function | Date | RegExp
 		? T
@ -47,6 +47,16 @@ function _nullToUndefined<T>(obj: T): NullToUndefined<T> {
 	return obj as any;
 }

+/**
+ * Recursively converts all null values to undefined.
+ *
+ * @param obj object to convert
+ * @returns a copy of the object with all its null values converted to undefined
+ */
+export function fromRustObject<T>(obj: T) {
+	return _nullToUndefined(structuredClone(obj));
+}
+
 function _undefinedToNull<T>(obj: T): UndefinedToNull<T> {
 	if (obj === undefined) {
 		return null as any;
@ -71,6 +81,6 @@ function _undefinedToNull<T>(obj: T): UndefinedToNull<T> {
 * @param obj object to convert
 * @returns a copy of the object with all its undefined values converted to null
 */
-export function undefinedToNull<T>(obj: T) {
+export function toRustObject<T>(obj: T) {
 	return _undefinedToNull(structuredClone(obj));
 }
--- a/packages/backend/src/remote/activitypub/request.ts
+++ b/packages/backend/src/remote/activitypub/request.ts
@ -5,8 +5,8 @@ import { StatusError, getResponse } from "@/misc/fetch.js";
 import { createSignedPost, createSignedGet } from "./ap-request.js";
 import type { Response } from "node-fetch";
 import type { IObject } from "./type.js";
-import { isValidUrl } from "@/misc/is-valid-url.js";
 import { apLogger } from "@/remote/activitypub/logger.js";
+import { isSafeUrl } from "backend-rs";

 export default async (user: { id: User["id"] }, url: string, object: any) => {
 	const body = JSON.stringify(object);
@ -44,7 +44,7 @@ export async function apGet(
 	user?: ILocalUser,
 	redirects: boolean = true,
 ): Promise<{ finalUrl: string; content: IObject }> {
-	if (!isValidUrl(url)) {
+	if (!isSafeUrl(url)) {
 		throw new StatusError("Invalid URL", 400);
 	}

--- a/packages/backend/src/server/api/endpoints/i/update.ts
+++ b/packages/backend/src/server/api/endpoints/i/update.ts
@ -87,6 +87,7 @@ export const paramDef = {
 		description: { ...Users.descriptionSchema, nullable: true },
 		location: { ...Users.locationSchema, nullable: true },
 		birthday: { ...Users.birthdaySchema, nullable: true },
+		lang: { type: "string", nullable: true },
 		avatarId: { type: "string", format: "misskey:id", nullable: true },
 		bannerId: { type: "string", format: "misskey:id", nullable: true },
 		fields: {
@ -154,6 +155,7 @@ export default define(meta, paramDef, async (ps, _user, token) => {

 	if (ps.name !== undefined) updates.name = ps.name;
 	if (ps.description !== undefined) profileUpdates.description = ps.description;
+	if (typeof ps.lang === "string") profileUpdates.lang = ps.lang;
 	if (ps.location !== undefined) profileUpdates.location = ps.location;
 	if (ps.birthday !== undefined) profileUpdates.birthday = ps.birthday;
 	if (ps.ffVisibility !== undefined)
--- a/packages/backend/src/server/nodeinfo.ts
+++ b/packages/backend/src/server/nodeinfo.ts
@ -1,9 +1,7 @@
 import Router from "@koa/router";
 import { config } from "@/config.js";
-import { fetchMeta } from "backend-rs";
-import { Users, Notes } from "@/models/index.js";
-import { IsNull, MoreThan } from "typeorm";
-import { Cache } from "@/misc/cache.js";
+import { nodeinfo_2_0, nodeinfo_2_1 } from "backend-rs";
+import { fromRustObject } from "@/prelude/undefined-to-null.js";

 const router = new Router();

@ -22,101 +20,14 @@ export const links = [
 	},
 ];

-const nodeinfo2 = async () => {
-	const now = Date.now();
-	const [meta, total, activeHalfyear, activeMonth, localPosts] =
-		await Promise.all([
-			fetchMeta(false),
-			Users.count({ where: { host: IsNull() } }),
-			Users.count({
-				where: {
-					host: IsNull(),
-					lastActiveDate: MoreThan(new Date(now - 15552000000)),
-				},
-			}),
-			Users.count({
-				where: {
-					host: IsNull(),
-					lastActiveDate: MoreThan(new Date(now - 2592000000)),
-				},
-			}),
-			Notes.count({ where: { userHost: IsNull() } }),
-		]);
-
-	const proxyAccount = meta.proxyAccountId
-		? await Users.pack(meta.proxyAccountId).catch(() => null)
-		: null;
-
-	return {
-		software: {
-			name: "firefish",
-			version: config.version,
-			repository: meta.repositoryUrl,
-			homepage: "https://firefish.dev/firefish/firefish",
-		},
-		protocols: ["activitypub"],
-		services: {
-			inbound: [] as string[],
-			outbound: ["atom1.0", "rss2.0"],
-		},
-		openRegistrations: !meta.disableRegistration,
-		usage: {
-			users: { total, activeHalfyear, activeMonth },
-			localPosts,
-			localComments: 0,
-		},
-		metadata: {
-			nodeName: meta.name,
-			nodeDescription: meta.description,
-			maintainer: {
-				name: meta.maintainerName,
-				email: meta.maintainerEmail,
-			},
-			langs: meta.langs,
-			tosUrl: meta.tosUrl,
-			repositoryUrl: meta.repositoryUrl,
-			feedbackUrl: meta.feedbackUrl,
-			disableRegistration: meta.disableRegistration,
-			disableLocalTimeline: meta.disableLocalTimeline,
-			disableRecommendedTimeline: meta.disableRecommendedTimeline,
-			disableGlobalTimeline: meta.disableGlobalTimeline,
-			emailRequiredForSignup: meta.emailRequiredForSignup,
-			postEditing: true,
-			postImports: meta.experimentalFeatures?.postImports || false,
-			enableHcaptcha: meta.enableHcaptcha,
-			enableRecaptcha: meta.enableRecaptcha,
-			maxNoteTextLength: config.maxNoteLength,
-			maxCaptionTextLength: config.maxCaptionLength,
-			enableEmail: meta.enableEmail,
-			enableServiceWorker: meta.enableServiceWorker,
-			proxyAccountName: proxyAccount ? proxyAccount.username : null,
-			themeColor: meta.themeColor || "#31748f",
-		},
-	};
-};
-
-const cache = new Cache<Awaited<ReturnType<typeof nodeinfo2>>>(
-	"nodeinfo",
-	60 * 10,
-);
-
 router.get(nodeinfo2_1path, async (ctx) => {
-	const base = await cache.fetch(null, () => nodeinfo2());
-
-	ctx.body = { version: "2.1", ...base };
-	ctx.set("Cache-Control", "public, max-age=600");
+	ctx.body = fromRustObject(await nodeinfo_2_1());
+	ctx.set("Cache-Control", "public, max-age=3600");
 });

 router.get(nodeinfo2_0path, async (ctx) => {
-	const base = await cache.fetch(null, () => nodeinfo2());
-
-	// @ts-ignore
-	base.software.repository = undefined;
-	// @ts-ignore
-	base.software.homepage = undefined;
-
-	ctx.body = { version: "2.0", ...base };
-	ctx.set("Cache-Control", "public, max-age=600");
+	ctx.body = fromRustObject(await nodeinfo_2_0());
+	ctx.set("Cache-Control", "public, max-age=3600");
 });

 export default router;
--- a/packages/backend/src/services/fetch-instance-metadata.ts
+++ b/packages/backend/src/services/fetch-instance-metadata.ts
@ -10,6 +10,7 @@ import {
 import { Instances } from "@/models/index.js";
 import { getFetchInstanceMetadataLock } from "@/misc/app-lock.js";
 import Logger from "@/services/logger.js";
+import { type Nodeinfo, fetchNodeinfo } from "backend-rs";
 import { inspect } from "node:util";

 const logger = new Logger("metadata", "cyan");
@ -36,7 +37,7 @@ export async function fetchInstanceMetadata(

 	try {
 		const [info, dom, manifest] = await Promise.all([
-			fetchNodeinfo(instance).catch(() => null),
+			fetchNodeinfo(instance.host).catch(() => null),
 			fetchDom(instance).catch(() => null),
 			fetchManifest(instance).catch(() => null),
 		]);
@ -57,30 +58,26 @@ export async function fetchInstanceMetadata(

 		if (info) {
 			updates.softwareName =
-				info.software?.name
-					?.toLowerCase()
+				info.software.name
+					.toLowerCase()
 					.substring(0, MAX_LENGTH_INSTANCE.softwareName) || null;
 			updates.softwareVersion =
-				info.software?.version?.substring(
+				info.software.version.substring(
 					0,
 					MAX_LENGTH_INSTANCE.softwareVersion,
 				) || null;
 			updates.openRegistrations = info.openRegistrations;
-			updates.maintainerName = info.metadata
-				? info.metadata.maintainer
-					? info.metadata.maintainer.name?.substring(
-							0,
-							MAX_LENGTH_INSTANCE.maintainerName,
-						) || null
-					: null
+			updates.maintainerName = info.metadata.maintainer
+				? info.metadata.maintainer.name?.substring(
+						0,
+						MAX_LENGTH_INSTANCE.maintainerName,
+					) || null
 				: null;
-			updates.maintainerEmail = info.metadata
-				? info.metadata.maintainer
-					? info.metadata.maintainer.email?.substring(
-							0,
-							MAX_LENGTH_INSTANCE.maintainerEmail,
-						) || null
-					: null
+			updates.maintainerEmail = info.metadata.maintainer
+				? info.metadata.maintainer.email?.substring(
+						0,
+						MAX_LENGTH_INSTANCE.maintainerEmail,
+					) || null
 				: null;
 		}

@ -115,75 +112,6 @@ export async function fetchInstanceMetadata(
 	}
 }

-type NodeInfo = {
-	openRegistrations?: boolean;
-	software?: {
-		name?: string;
-		version?: string;
-	};
-	metadata?: {
-		name?: string;
-		nodeName?: string;
-		nodeDescription?: string;
-		description?: string;
-		maintainer?: {
-			name?: string;
-			email?: string;
-		};
-	};
-};
-
-async function fetchNodeinfo(instance: Instance): Promise<NodeInfo> {
-	logger.info(`Fetching nodeinfo of ${instance.host} ...`);
-
-	try {
-		const wellknown = (await getJson(
-			`https://${instance.host}/.well-known/nodeinfo`,
-		).catch((e) => {
-			if (e.statusCode === 404) {
-				throw new Error("No nodeinfo provided");
-			} else {
-				throw new Error(inspect(e));
-			}
-		})) as Record<string, unknown>;
-
-		if (wellknown.links == null || !Array.isArray(wellknown.links)) {
-			throw new Error("No wellknown links");
-		}
-
-		const links = wellknown.links as any[];
-
-		const lnik1_0 = links.find(
-			(link) => link.rel === "http://nodeinfo.diaspora.software/ns/schema/1.0",
-		);
-		const lnik2_0 = links.find(
-			(link) => link.rel === "http://nodeinfo.diaspora.software/ns/schema/2.0",
-		);
-		const lnik2_1 = links.find(
-			(link) => link.rel === "http://nodeinfo.diaspora.software/ns/schema/2.1",
-		);
-		const link = lnik2_1 || lnik2_0 || lnik1_0;
-
-		if (link == null) {
-			throw new Error("No nodeinfo link provided");
-		}
-
-		const info = await getJson(link.href).catch((e) => {
-			throw new Error(inspect(e));
-		});
-
-		logger.info(`Successfuly fetched nodeinfo of ${instance.host}`);
-
-		return info as NodeInfo;
-	} catch (e) {
-		logger.error(
-			`Failed to fetch nodeinfo of ${instance.host}:\n${inspect(e)}`,
-		);
-
-		throw e;
-	}
-}
-
 async function fetchDom(instance: Instance): Promise<Window["document"]> {
 	logger.info(`Fetching HTML of ${instance.host} ...`);

@ -272,7 +200,7 @@ async function fetchIconUrl(
 }

 async function getThemeColor(
-	info: NodeInfo | null,
+	info: Nodeinfo | null,
 	doc: Window["document"] | null,
 	manifest: Record<string, any> | null,
 ): Promise<string | null> {
@ -290,7 +218,7 @@ async function getThemeColor(
 }

 async function getSiteName(
-	info: NodeInfo | null,
+	info: Nodeinfo | null,
 	doc: Window["document"] | null,
 	manifest: Record<string, any> | null,
 ): Promise<string | undefined | null> {
@ -318,7 +246,7 @@ async function getSiteName(
 }

 async function getDescription(
-	info: NodeInfo | null,
+	info: Nodeinfo | null,
 	doc: Window["document"] | null,
 	manifest: Record<string, any> | null,
 ): Promise<string | null> {
--- a/packages/backend/src/services/note/create.ts
+++ b/packages/backend/src/services/note/create.ts
@ -66,7 +66,7 @@ import { Mutex } from "redis-semaphore";
 import { langmap } from "@/misc/langmap.js";
 import Logger from "@/services/logger.js";
 import { inspect } from "node:util";
-import { undefinedToNull } from "@/prelude/undefined-to-null.js";
+import { toRustObject } from "@/prelude/undefined-to-null.js";

 const logger = new Logger("create-note");

@ -404,7 +404,7 @@ export default async (
 			checkHitAntenna(antenna, note, user).then((hit) => {
 				if (hit) {
 					// TODO: do this more sanely
-					addNoteToAntenna(antenna.id, undefinedToNull(note) as Note);
+					addNoteToAntenna(antenna.id, toRustObject(note));
 				}
 			});
 		}
--- a/packages/client/package.json
+++ b/packages/client/package.json
@ -21,8 +21,6 @@
 		"@syuilo/aiscript": "0.17.0",
 		"@types/autosize": "^4.0.3",
 		"@types/glob": "8.1.0",
-		"@types/gulp": "4.0.17",
-		"@types/gulp-rename": "2.0.6",
 		"@types/insert-text-at-cursor": "^0.3.2",
 		"@types/katex": "0.16.7",
 		"@types/matter-js": "0.19.6",
@ -59,6 +57,7 @@
 		"gsap": "^3.12.5",
 		"idb-keyval": "6.2.1",
 		"insert-text-at-cursor": "0.3.0",
+		"i18n": "workspace:*",
 		"json5": "2.2.3",
 		"katex": "0.16.10",
 		"long": "^5.2.3",
--- a/packages/client/src/account.ts
+++ b/packages/client/src/account.ts
@ -132,6 +132,9 @@ export async function signIn(token: Account["token"], redirect?: string) {
 	if (_DEV_) console.log("logging as token ", token);
 	const newAccount = await fetchAccount(token);
 	localStorage.setItem("account", JSON.stringify(newAccount));
+	if (newAccount.lang) {
+		localStorage.setItem("lang", newAccount.lang);
+	}
 	document.cookie = `token=${token}; path=/; max-age=31536000`; // bull dashboardの認証とかで使う
 	await addAccount(newAccount.id, token);

--- a/packages/client/src/components/MkMenu.vue
+++ b/packages/client/src/components/MkMenu.vue
@ -130,7 +130,7 @@
 						v-else-if="item.type === 'parent'"
 						class="_button item parent"
 						:class="{ childShowing: childShowingItem === item }"
-						@mouseenter="showChildren(item, $event)"
+						@mouseenter.passive="showChildren(item, $event)"
 						@click.stop="showChildren(item, $event)"
 					>
 						<i
@ -318,6 +318,7 @@ function onItemMouseLeave(_item) {

 async function showChildren(item: MenuParent, ev: MouseEvent) {
 	if (props.asDrawer) {
+		if (ev.type === "mouseenter") return;
 		os.popupMenu(item.children, (ev.currentTarget ?? ev.target) as HTMLElement);
 		close();
 	} else {
--- a/packages/client/src/i18n.ts
+++ b/packages/client/src/i18n.ts
@ -1,36 +1,6 @@
 import { markRaw } from "vue";
 import { locale } from "@/config";

-class I18n<T extends Record<string, any>> {
-	public ts: T;
-
-	constructor(locale: T) {
-		this.ts = locale;
-
-		// #region BIND
-		this.t = this.t.bind(this);
-		// #endregion
-	}
-
-	// string にしているのは、ドット区切りでのパス指定を許可するため
-	// なるべくこのメソッド使うよりもlocale直接参照の方がvueのキャッシュ効いてパフォーマンスが良いかも
-	public t(key: string, args?: Record<string, string | number>): string {
-		try {
-			let str = key
-				.split(".")
-				.reduce((o, i) => o[i], this.ts) as unknown as string;
-
-			if (args) {
-				for (const [k, v] of Object.entries(args)) {
-					str = str.replaceAll(`{${k}}`, v.toString());
-				}
-			}
-			return str;
-		} catch (err) {
-			console.warn(`missing localization '${key}'`);
-			return key;
-		}
-	}
-}
+import { I18n } from "i18n";

 export const i18n = markRaw(new I18n(locale));
--- a/packages/client/src/pages/settings/general.vue
+++ b/packages/client/src/pages/settings/general.vue
@ -14,6 +14,12 @@
 						>
 					</template>
 				</I18n>
+				<I18n :src="i18n.ts.i18nServerInfo" v-if="serverLang" tag="span">
+					<template #language><strong>{{ langs.find(a => a[0] === serverLang)?.[1] ?? serverLang }}</strong></template>
+				</I18n>
+				<button class="_textButton" @click="updateServerLang" v-if="lang && lang !== serverLang">
+					{{i18n.t(serverLang ? "i18nServerChange" : "i18nServerSet", { language: langs.find(a => a[0] === lang)?.[1] ?? lang })}}
+				</button>
 			</template>
 		</FormSelect>

@ -404,6 +410,7 @@ import { deviceKind } from "@/scripts/device-kind";
 import icon from "@/scripts/icon";

 const lang = ref(localStorage.getItem("lang"));
+const serverLang = ref(me?.lang);
 const translateLang = ref(localStorage.getItem("translateLang"));
 const fontSize = ref(localStorage.getItem("fontSize"));
 const useSystemFont = ref(localStorage.getItem("useSystemFont") !== "f");
@ -559,6 +566,14 @@ const foldNotification = computed(
 // 	});
 // }

+function updateServerLang() {
+	os.api("i/update", {
+		lang: lang.value,
+	}).then((i) => {
+		serverLang.value = i.lang;
+	});
+}
+
 watch(swipeOnDesktop, () => {
 	defaultStore.set("swipeOnMobile", true);
 });
--- a/packages/i18n/.swcrc
+++ b/packages/i18n/.swcrc
@ -0,0 +1,24 @@
+{
+	"$schema": "https://json.schemastore.org/swcrc",
+	"jsc": {
+		"parser": {
+			"syntax": "typescript",
+			"dynamicImport": true,
+			"decorators": true
+		},
+		"transform": {
+			"legacyDecorator": true,
+			"decoratorMetadata": true
+		},
+		"experimental": {
+			"emitAssertForImportAttributes": true
+		},
+		"target": "es2022"
+	},
+	"minify": false,
+	"module": {
+		"type": "es6",
+		"strict": true,
+		"resolveFully": true
+	}
+}
--- a/packages/i18n/LICENSE
+++ b/packages/i18n/LICENSE
@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2024 Firefish contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/packages/i18n/README.md
+++ b/packages/i18n/README.md
@ -0,0 +1,3 @@
+# i18n
+
+## Typed i18n for firefish
--- a/packages/i18n/package.json
+++ b/packages/i18n/package.json
@ -0,0 +1,41 @@
+{
+	"name": "i18n",
+	"version": "0.0.1",
+	"description": "Firefish i18n for TypeScript",
+	"homepage": "https://firefish.dev/firefish/firefish/-/tree/develop/packages/i18n",
+	"main": "./built/index.js",
+	"types": "./src/index.ts",
+	"type": "module",
+	"license": "MIT",
+	"scripts": {
+		"build:types": "node scripts/build.js",
+		"build": "pnpm run build:types && pnpm swc src --out-dir built --source-maps false --copy-files --strip-leading-paths",
+		"build:debug": "pnpm run build:types && pnpm swc src --out-dir built --source-maps true --copy-files --strip-leading-paths",
+		"watch": "pnpm swc src --out-dir built --source-maps true --copy-files --strip-leading-paths --watch",
+		"lint": "pnpm biome check --apply src",
+		"format": "pnpm biome format --write src",
+		"jest": "echo NOT_IMPLEMENTED",
+		"test": "pnpm jest && pnpm tsd"
+	},
+	"repository": {
+		"type": "git",
+		"url": "https://firefish.dev/firefish/firefish.git"
+	},
+	"devDependencies": {
+		"@swc/cli": "0.3.12",
+		"@swc/core": "1.5.0",
+		"@swc/types": "^0.1.6",
+		"@types/js-yaml": "^4.0.9",
+		"@types/node": "20.12.7",
+		"typescript": "5.4.5"
+	},
+	"files": [
+		"built", "src"
+	],
+	"dependencies": {
+		"js-yaml": "4.1.0"
+	},
+	"optionalDependencies": {
+		"@swc/core-android-arm64": "1.3.11"
+	}
+}
--- a/packages/i18n/scripts/build.js
+++ b/packages/i18n/scripts/build.js
@ -0,0 +1,79 @@
+/**
+ * Build I18n types from en-US.yml
+ */
+
+import yaml from "js-yaml";
+import fs from "node:fs";
+
+const locale = yaml.load(fs.readFileSync("../../locales/en-US.yml"));
+
+function safeStr(str) {
+	return /^[a-zA-Z_][a-zA-Z0-9_]*$/.test(str) ? str : `"${str}"`;
+}
+
+/**
+ * 
+ * @param {*} obj 
+ * @param {string} prefix 
+ * @returns {string[]}
+ */
+function generateKeys(obj, prefix = "") {
+	const keys = [];
+	for (const [key, o] of Object.entries(obj)) {
+		const keyStr = safeStr(`${prefix}${key}`);
+		if (typeof o === 'string') {
+			const vars = o.match(/\{[A-Za-z0-9_]+\}/g);
+			if (vars == null || vars.length === 0) {
+				keys.push(`
+/** ${o.replaceAll("\n", "  \n * ") } */
+${keyStr}: {
+	param: Record<string, never>;
+	result: ${JSON.stringify(o)};
+}`);
+			} else {
+				keys.push(`
+/** ${o.replaceAll("\n", "  \n * ") } */
+${keyStr}: {
+	param: {
+		${
+			[...new Set(vars)].map(v => `${v.slice(1, -1)}: any;`).join("\n\t\t")
+		}
+	};
+	result: ${JSON.stringify(o)};
+}`);
+			}
+		} else if (typeof o === 'object') {
+			keys.push(generateKeys(o, `${prefix}${key}.`));
+		}
+	}
+	return keys;
+}
+
+function generateValues(obj) {
+	const keys = [];
+	for (const [key, o] of Object.entries(obj)) {
+		const keyStr = safeStr(key);
+		if (typeof o === 'string') {
+			// const vars = o.match(/\{[A-Za-z0-9_]+\}/g);
+			keys.push(`\n/** ${o.replaceAll("\n", "  \n * ") } */\n${keyStr}: ${JSON.stringify(o)}`);
+		} else if (typeof o === 'object') {
+			keys.push(`\n${keyStr}: {\n\t${
+				generateValues(o).replaceAll("\n", "\n\t")
+			}\n}`);
+		}
+	}
+	return keys.join("\n");
+}
+
+const typestr = `
+export interface I18nKeys {
+	${generateKeys(locale).flat(100).join("\n").replaceAll("\n", "\n\t")}
+}
+
+export interface I18nValues {
+	${generateValues(locale).replaceAll("\n", "\n\t")}
+}`;
+
+fs.mkdirSync("built", { recursive: true });
+
+fs.writeFileSync("built/types.d.ts", typestr);
--- a/packages/i18n/src/index.ts
+++ b/packages/i18n/src/index.ts
@ -0,0 +1,63 @@
+import type { I18nKeys, I18nValues } from "../built/types.d.ts";
+
+const undefinedProxy: object = new Proxy(
+	{},
+	{
+		get() {
+			return undefinedProxy;
+		},
+	},
+);
+
+// biome-ignore lint/suspicious/noExplicitAny: used intentially
+type ExplicitAny = any;
+
+const makeProxy: <T extends object>(_any: T) => T = (target: ExplicitAny) =>
+	new Proxy(target, {
+		get(target, prop) {
+			if (target[prop] == null) {
+				return undefinedProxy;
+			}
+			if (typeof target[prop] === "object") {
+				return makeProxy(target[prop]);
+			}
+			return target[prop];
+		},
+	});
+
+export class I18n {
+	public ts: I18nValues;
+	private _ts: I18nValues;
+
+	constructor(locale: I18nValues) {
+		this.ts = makeProxy(locale);
+		this._ts = locale;
+
+		// #region BIND
+		this.t = this.t.bind(this);
+		// #endregion
+	}
+
+	// string にしているのは、ドット区切りでのパス指定を許可するため
+	// なるべくこのメソッド使うよりもlocale直接参照の方がvueのキャッシュ効いてパフォーマンスが良いかも
+	public t<K extends keyof I18nKeys>(
+		key: K,
+		args?: I18nKeys[K]["param"],
+	): I18nKeys[K]["result"] {
+		try {
+			let str = key
+				.split(".")
+				.reduce((o, i) => o[i as never], this._ts) as unknown as string;
+
+			if (args) {
+				for (const [k, v] of Object.entries(args)) {
+					str = str.replaceAll(`{${k}}`, v.toString());
+				}
+			}
+			return str as never;
+		} catch (err) {
+			console.warn(`missing localization '${key}'`);
+			return key as never;
+		}
+	}
+}
--- a/packages/i18n/tsconfig.json
+++ b/packages/i18n/tsconfig.json
@ -0,0 +1,20 @@
+{
+	"$schema": "http://json.schemastore.org/tsconfig",
+	"compilerOptions": {
+		"target": "es2021",
+		"module": "es2022",
+		"declaration": true,
+		"declarationMap": true,
+		"sourceMap": true,
+		"outDir": "./built/",
+		"removeComments": true,
+		"strict": true,
+		"strictFunctionTypes": true,
+		"strictNullChecks": true,
+		"experimentalDecorators": true,
+		"noImplicitReturns": true,
+		"esModuleInterop": true
+	},
+	"include": ["src/**/*"],
+	"exclude": ["node_modules", "test/**/*"]
+}
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
--- a/pnpm-workspace.yaml
+++ b/pnpm-workspace.yaml
@ -5,3 +5,4 @@ packages:
 - 'packages/sw'
 - 'packages/firefish-js'
 - 'packages/megalodon'
+ - 'packages/i18n'
--- a/scripts/build.mjs
+++ b/scripts/build.mjs
@ -12,6 +12,7 @@ import { execa } from "execa";
 			"--parallel",
 			"--filter=backend-rs",
 			"--filter=firefish-js",
+			"--filter=i18n",
 			"run",
 			"build",
 		], {
@ -26,6 +27,7 @@ import { execa } from "execa";
 			"--parallel",
 			"--filter=!backend-rs",
 			"--filter=!firefish-js",
+			"--filter=!i18n",
 			"run",
 			"build",
 		], {
--- a/scripts/clean-built.mjs
+++ b/scripts/clean-built.mjs
@ -25,6 +25,10 @@ import { fileURLToPath } from "node:url";
 		recursive: true,
 		force: true,
 	});
+	fs.rmSync(join(__dirname, "/../packages/i18n/built"), {
+		recursive: true,
+		force: true,
+	});
 	fs.rmSync(join(__dirname, "/../packages/megalodon/lib"), {
 		recursive: true,
 		force: true,
--- a/scripts/clean-npm.mjs
+++ b/scripts/clean-npm.mjs
@ -26,6 +26,14 @@ import { execa } from "execa";
 		recursive: true,
 		force: true,
 	});
+	fs.rmSync(join(__dirname, "/../packages/i18n/node_modules"), {
+		recursive: true,
+		force: true,
+	});
+	fs.rmSync(join(__dirname, "/../packages/firefish-js/node_modules"), {
+		recursive: true,
+		force: true,
+	});
 	fs.rmSync(join(__dirname, "/../packages/megalodon/node_modules"), {
 		recursive: true,
 		force: true,
--- a/scripts/copy-assets.mjs
+++ b/scripts/copy-assets.mjs
@ -0,0 +1,41 @@
+import fs from "node:fs/promises";
+import path, { join } from "node:path";
+import { fileURLToPath } from "node:url";
+
+const repositoryRootDir = join(path.dirname(fileURLToPath(import.meta.url)), "../");
+const file = (relativePath) => join(repositoryRootDir, relativePath);
+
+await (async () => {
+	await fs.rm(file("built/_client_dist_/locales"), { recursive: true, force: true });
+	await Promise.all([
+		fs.cp(file("packages/backend/src/server/web"), file("packages/backend/built/server/web"), { recursive: true }),
+		fs.cp(file("custom/assets"), file("packages/backend/assets"), { recursive: true }),
+		fs.cp(file("packages/client/node_modules/three/examples/fonts"), file("built/_client_dist_/fonts"), { recursive: true }),
+		fs.mkdir(file("built/_client_dist_/locales"), { recursive: true }),
+	]);
+
+	const locales = (await import("../locales/index.mjs")).default;
+	const meta = (await import("../built/meta.json", { assert: { type: "json" } })).default;
+
+	for await (const [lang, locale] of Object.entries(locales)) {
+		await fs.writeFile(
+			file(`built/_client_dist_/locales/${lang}.${meta.version}.json`),
+			JSON.stringify({ ...locale, _version_: meta.version }),
+			"utf-8",
+		);
+	}
+
+	const js_assets = [
+		file("packages/backend/built/server/web/boot.js"),
+		file("packages/backend/built/server/web/bios.js"),
+		file("packages/backend/built/server/web/cli.js"),
+	];
+
+	for await (const js_file of js_assets) {
+		const content = (await fs.readFile(js_file, "utf-8"))
+			.replace("SUPPORTED_LANGS", JSON.stringify(Object.keys(locales)));
+		await fs.writeFile(js_file, content, "utf-8");
+	}
+
+	// TODO?: minify packages/backend/built/server/web/*.css
+})();
--- a/scripts/dev-build.mjs
+++ b/scripts/dev-build.mjs
@ -1,6 +1,7 @@
 import path, { join } from "node:path";
 import { fileURLToPath } from "node:url";
 import { execa } from "execa";
+import fs from "node:fs";

 (async () => {
 	const __dirname = path.dirname(fileURLToPath(import.meta.url));
@ -11,6 +12,7 @@ import { execa } from "execa";
 			"--parallel",
 			"--filter=backend-rs",
 			"--filter=firefish-js",
+			"--filter=i18n",
 			"run",
 			"build:debug",
 		], {
@ -25,6 +27,7 @@ import { execa } from "execa";
 			"--parallel",
 			"--filter=!backend-rs",
 			"--filter=!firefish-js",
+			"--filter=!i18n",
 			"run",
 			"build:debug",
 		], {
@ -32,4 +35,18 @@ import { execa } from "execa";
 			stdio: "inherit",
 		}
 	);
+
+	if (!fs.existsSync(join(__dirname, "/../packages/backend-rs/built/index.js"))) {
+		fs.copyFileSync(
+			join(__dirname, "/../packages/backend-rs/index.js"),
+			join(__dirname, "/../packages/backend-rs/built/index.js"),
+		);
+		console.warn("backend-rs/built/index.js has not been updated (https://github.com/napi-rs/napi-rs/issues/1768)");
+	}
+	if (!fs.existsSync(join(__dirname, "/../packages/backend-rs/built/index.d.ts"))) {
+		fs.copyFileSync(
+			join(__dirname, "/../packages/backend-rs/index.d.ts"),
+			join(__dirname, "/../packages/backend-rs/built/index.d.ts"),
+		);
+	}
 })();
--- a/scripts/dev.mjs
+++ b/scripts/dev.mjs
@ -11,12 +11,6 @@ import { execa } from "execa";
 		stderr: process.stderr,
 	});

-	execa("pnpm", ["dlx", "gulp", "watch"], {
-		cwd: join(__dirname, "/../"),
-		stdout: process.stdout,
-		stderr: process.stderr,
-	});
-
 	execa("pnpm", ["--filter", "backend", "watch"], {
 		cwd: join(__dirname, "/../"),
 		stdout: process.stdout,
Author	SHA1	Message	Date
Linca	0d27f038da	Merge branch 'type-i18n' into 'develop' dev: Add type annotations to i18n Co-authored-by: Lhcfl <Lhcfl@outlook.com> See merge request firefish/firefish!10773	2024-05-06 19:03:29 +00:00
naskya	14b285f882	Merge branch 'refactor/is-safe-url' into 'develop' refactor (backend): port isValidUrl to backend-rs See merge request firefish/firefish!10795	2024-05-06 17:11:51 +00:00
naskya	baa5c402db	ci: apt-get update first & fix paths	2024-05-07 01:54:29 +09:00
naskya	5b01d3574f	refactor (backend): port isValidUrl to backend-rs	2024-05-07 00:56:37 +09:00
naskya	e3a98ebc72	Merge branch 'userLang' into 'develop' Add server-side per-user UI language Co-authored-by: eana <coder@apps.1a23.com> See merge request firefish/firefish!10793	2024-05-06 15:31:18 +00:00
naskya	7fe7f90350	ci: revise build config	2024-05-07 00:22:51 +09:00
naskya	8ed942e00f	chore: update auto-generated files	2024-05-06 23:13:31 +09:00
naskya	ddfdd038ad	chore: update downgrade.sql	2024-05-06 23:10:39 +09:00
naskya	7fdd44cf8d	locale: update translations	2024-05-06 23:07:57 +09:00
naskya	0c4826becf	dev: copy backend-rs/index.{js,d.ts} to built/index.{js,d.ts} if not exist https://firefish.dev/firefish/firefish/-/merge_requests/10780#note_5685	2024-05-06 22:54:10 +09:00
naskya	ecd8e3d109	ci: remove git clean flags	2024-05-06 22:51:42 +09:00
naskya	a3b156441a	ci: temporary fix for cargo test failure due to missing meta.json	2024-05-06 19:38:35 +09:00
naskya	ecbd8a8724	ci: save node_modules and target	2024-05-06 19:23:43 +09:00
naskya	442dc33a34	ci: exec build & cargo test only for now	2024-05-06 19:08:28 +09:00
naskya	c8372767fa	ci: attempt to fix permission	2024-05-06 19:00:34 +09:00
naskya	8e497b41cf	messed up	2024-05-06 18:44:28 +09:00
naskya	bfdf73caeb	ci: fix permisson	2024-05-06 18:38:54 +09:00
naskya	5b18f9761c	ci: fix .git	2024-05-06 18:29:31 +09:00
naskya	641ff742bb	ci: add dependencies of sea-orm-cli	2024-05-06 18:26:50 +09:00
naskya	e6121946aa	ci: another fix	2024-05-06 18:11:30 +09:00
naskya	c6212ff8f4	ci: use CI_JOB_TOKEN	2024-05-06 18:06:56 +09:00
naskya	d582a84c57	ci: install postgresql client	2024-05-06 17:58:26 +09:00
naskya	a7978e2b08	ci: non-interactive shell option	2024-05-06 17:46:45 +09:00
naskya	766bac3dee	ci: give alias for services	2024-05-06 17:14:47 +09:00
naskya	7360736966	ci: fix typo	2024-05-06 17:07:42 +09:00
naskya	e797849e9b	ci: attempt to add a CI task for merge requests	2024-05-06 17:00:36 +09:00
eana	ef57735e6a	fix typo	2024-05-06 05:26:38 +00:00
eana	e7c33835b2	Add server-side per-user UI language	2024-05-06 05:14:44 +00:00
naskya	4e83dbd01f	Merge branch 'refactor/remove-gulp' into 'develop' refactor: replace gulp with a simple script See merge request firefish/firefish!10791	2024-05-06 04:45:17 +00:00
naskya	dd74eabae1	refactor (backend): port nodeinfo fetcher to backend-rs	2024-05-06 08:12:21 +09:00
naskya	711618b42c	test (backend-rs): add tests for nodeinfo (de)serialization	2024-05-06 05:20:13 +09:00
naskya	510207b101	refactor (backend-rs): separate nodeinfo generator and schema	2024-05-06 04:23:38 +09:00
naskya	49825853c1	refactor (backend): port nodeinfo generator to backend-rs	2024-05-06 03:01:55 +09:00
naskya	359fef0a42	chore: replace old comments	2024-05-05 21:22:57 +09:00
naskya	fda81a9f91	chore: use absolute path for file operations	2024-05-05 21:04:20 +09:00
naskya	c505c6df36	fix: remove old locale files	2024-05-05 20:59:26 +09:00
naskya	9a4a75bf92	Merge branch 'fix/click' into 'develop' fix: Click event of MenuParent unexpectedly goes to underlying element Co-authored-by: Lhcfl <Lhcfl@outlook.com> See merge request firefish/firefish!10792	2024-05-05 11:42:25 +00:00
Linca	5e5d01d407	fix: Click event of MenuParent unexpectedly goes to underlying element Co-authored-by: Lhcfl <Lhcfl@outlook.com>	2024-05-05 11:42:25 +00:00
naskya	d114b8ec1d	chore: format	2024-05-05 14:58:56 +09:00
naskya	d2471b6db7	refactor (backend-rs): replace reqwest with isahc reqwest is feature-rich, but we will need isahc http client for push notifications (!10760) isahc http client is also good btw :)	2024-05-05 14:53:45 +09:00
naskya	341b43ed71	refactor: replace gulp with a simple script	2024-05-05 02:19:58 +09:00
Lhcfl	4f5a6bd69b	fix: https://firefish.dev/firefish/firefish/-/merge_requests/10773#note_5623	2024-04-27 21:28:35 +08:00
Lhcfl	d135a362c7	dev: Add type annotations to i18n	2024-04-27 12:02:55 +08:00