87 lines
2.0 KiB
TypeScript
87 lines
2.0 KiB
TypeScript
import { publishNoteStream } from "@/services/stream.js";
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import type { CacheableUser } from "@/models/entities/user.js";
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import type { Note } from "@/models/entities/note.js";
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import { PollVotes, NoteWatchings, Polls, Blockings } from "@/models/index.js";
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import { Not } from "typeorm";
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import { genId } from "backend-rs";
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import { createNotification } from "@/services/create-notification.js";
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export default async function (
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user: CacheableUser,
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note: Note,
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choice: number,
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) {
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const poll = await Polls.findOneBy({ noteId: note.id });
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if (poll == null) throw new Error("poll not found");
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// Check whether is valid choice
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if (poll.choices[choice] == null) throw new Error("invalid choice param");
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// Check blocking
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if (note.userId !== user.id) {
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const block = await Blockings.findOneBy({
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blockerId: note.userId,
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blockeeId: user.id,
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});
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if (block) {
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throw new Error("blocked");
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}
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}
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// if already voted
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const exist = await PollVotes.findBy({
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noteId: note.id,
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userId: user.id,
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});
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if (poll.multiple) {
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if (exist.some((x) => x.choice === choice)) {
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throw new Error("already voted");
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}
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} else if (exist.length !== 0) {
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throw new Error("already voted");
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}
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// Create vote
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await PollVotes.insert({
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id: genId(),
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createdAt: new Date(),
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noteId: note.id,
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userId: user.id,
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choice: choice,
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});
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// Increment votes count
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const index = choice + 1; // In SQL, array index is 1 based
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await Polls.query(
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`UPDATE poll SET votes[${index}] = votes[${index}] + 1 WHERE "noteId" = '${poll.noteId}'`,
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);
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publishNoteStream(note.id, "pollVoted", {
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choice: choice,
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userId: user.id,
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});
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// Notify
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createNotification(note.userId, "pollVote", {
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notifierId: user.id,
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noteId: note.id,
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choice: choice,
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});
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// Fetch watchers
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NoteWatchings.findBy({
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noteId: note.id,
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userId: Not(user.id),
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}).then((watchers) => {
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for (const watcher of watchers) {
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createNotification(watcher.userId, "pollVote", {
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notifierId: user.id,
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noteId: note.id,
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choice: choice,
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});
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}
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});
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}
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