Model some download buttons

elm.json

@@ -8,10 +8,12 @@
         "direct": {
             "elm/browser": "1.0.2",
             "elm/core": "1.0.5",
+            "elm/file": "1.0.5",
             "elm/html": "1.0.0",
             "rtfeldman/elm-sorter-experiment": "2.1.1"
         },
         "indirect": {
+            "elm/bytes": "1.0.8",
             "elm/json": "1.1.3",
             "elm/time": "1.0.0",
             "elm/url": "1.0.0",

site/styles.scss

@@ -96,11 +96,12 @@ header {
 	}
 }
 
-#elm-area {
+#modules {
 	display: grid;
 	grid-template-columns: 50% 50%;
 	gap: 50px;
 	margin: 0 -180px;
+	margin-bottom: 50px;
 
 	.module-button > div {
 		box-sizing: border-box;
@@ -134,6 +135,12 @@ header {
 	}
 }
 
+#downloads {
+	display: grid;
+	grid-template-columns: auto auto auto;
+	width: 100%;
+}
+
 .cooler-checkbox {
 	height: 40px;
 	width: 40px;

src/Main.elm

@@ -2,20 +2,31 @@ module Main exposing (main)
 
 import Browser
 import Sort.Set exposing (Set)
-import Html exposing (Html, div, input, label, p, text, h3)
-import Html.Events exposing (onCheck)
+import Html exposing (Html, div, input, label, p, section, text, h3)
+import Html.Events exposing (onCheck, onClick)
 import Html.Attributes exposing (class, type_, id)
 import Modules exposing
   ( Module
   , all_modules
+  , download_license
+  , DownloadType(..)
   , module_property
   , module_desc
   , module_sorter
   )
+import Html.Attributes exposing (attribute)
 
 main: Program () Model Msg
 main =
-  Browser.sandbox { init = init, update = update, view = view }
+  Browser.element
+    { init = init
+    , update = update
+    , view = view
+    , subscriptions = subscriptions
+    }
+
+subscriptions : Model -> Sub Msg
+subscriptions _ = Sub.none
 
 -- INIT + Model
 
@@ -24,15 +35,17 @@ type alias Model =
   { enabled_modules : Set Module
   }
 
-init : Model
-init =
-  { enabled_modules = Sort.Set.empty module_sorter
-  }
+init : () -> (Model, Cmd Msg)
+init () =
+  ( { enabled_modules = Sort.Set.empty module_sorter }
+  , Cmd.none
+  )
 
 -- UPDATE
 
 type Msg
   = ToggleModule Module Bool
+  | Download DownloadType
 
 add_or_remove : Bool -> (a -> Set a -> Set a)
 add_or_remove active =
@@ -41,11 +54,15 @@ add_or_remove active =
   else
     Sort.Set.remove
 
-update : Msg -> Model -> Model
+update : Msg -> Model -> (Model, Cmd Msg)
 update msg model =
   case msg of
     ToggleModule mod enabled ->
-      { model | enabled_modules = add_or_remove enabled mod model.enabled_modules }
+      ( { model | enabled_modules = add_or_remove enabled mod model.enabled_modules }
+      , Cmd.none
+      )
+    Download dtype ->
+      ( model , download_license dtype (Sort.Set.toList model.enabled_modules) )
 
 -- VIEW
 
@@ -67,9 +84,50 @@ view_module_button enabled mod =
       ]
     ]
 
+view_modules : Set Module -> Html Msg
+view_modules modules =
+  section [id "modules"] (
+      all_modules
+        |> List.map (view_module_button modules)
+  )
+
+view_cooler_button : String -> msg -> Html msg
+view_cooler_button name message =
+  div
+    [ class "cool-button"
+    , onClick message
+    ]
+    [ div
+      [ class "bevel"
+      , class "tr"
+      , attribute "aria-hidden" "true"
+      ] []
+    , div [] [ text name ]
+    , div
+      [ class "bevel"
+      , class "bl"
+      , attribute "aria-hidden" "true"
+      ] []
+    ]
+
+view_download_button : (String, DownloadType) -> Html Msg
+view_download_button (name, dtype) =
+  view_cooler_button name (Download dtype)
+
+downloads : Html Msg
+downloads =
+  section [id "downloads"]
+    ( List.map view_download_button
+      [ ("Markdown", Markdown)
+      , ("Plaintext", Plain)
+      , ("HTML", Html)
+      ]
+    )
+
+
 view : Model -> Html Msg
 view model =
-  div [id "elm-area"] (
-      all_modules
-        |> List.map (view_module_button model.enabled_modules)
-  )
+  div [id "elm-area"]
+    [ view_modules model.enabled_modules
+    , downloads
+    ]

src/Modules.elm

@@ -1,6 +1,9 @@
 module Modules exposing
   ( Module
   , all_modules
+  , build_license
+  , download_license
+  , DownloadType(..)
   , ModuleInfo
   , module_info
   , module_property
@@ -11,6 +14,7 @@ module Modules exposing
 import Html exposing (Html, text, a)
 import Html.Attributes exposing (href)
 import Sort exposing (Sorter)
+import File.Download as Download
 
 type Module
   = CarbonUnderground
@@ -245,3 +249,35 @@ module_desc mod =
 
 module_sorter : Sorter Module
 module_sorter = Sort.by (module_property .index) Sort.increasing
+
+-- License Building
+
+type DownloadType
+  = Plain
+  | Markdown
+  | Html
+
+download_mime : DownloadType -> String
+download_mime dtype =
+  case dtype of
+    Plain -> "text/plain"
+    Markdown -> "text/markdown"
+    Html -> "text/html"
+
+download_ext : DownloadType -> String
+download_ext dtype =
+  case dtype of
+    Plain -> "txt"
+    Markdown -> "md"
+    Html -> "html"
+
+build_license : DownloadType -> List Module -> String
+build_license dtype modules =
+  "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa!"
+
+download_license : DownloadType -> List Module -> Cmd msg
+download_license dtype modules =
+  Download.string
+    ("LICENSE." ++ (download_ext dtype))
+    (download_mime dtype)
+    (build_license dtype modules)