import { populatePoll } from "../../../../models/repositories/note.js";
import { PollConverter } from "../converters/poll.js";
import { Blockings, Notes, NoteWatchings, Polls, PollVotes, Users } from "../../../../models/index.js";
import { genId } from "../../../../misc/gen-id.js";
import { publishNoteStream } from "../../../../services/stream.js";
import { createNotification } from "../../../../services/create-notification.js";
import { deliver } from "../../../../queue/index.js";
import { renderActivity } from "../../../../remote/activitypub/renderer/index.js";
import renderVote from "../../../../remote/activitypub/renderer/vote.js";
import { Not } from "typeorm";
import { MastoApiError } from "../middleware/catch-errors.js";
import { populateEmojis } from "../../../../misc/populate-emojis.js";
import { EmojiConverter } from "../converters/emoji.js";
import { UserHelpers } from "./user.js";
export class PollHelpers {
    static async getPoll(note, ctx) {
        const user = ctx.user;
        if (!await Notes.isVisibleForMe(note, user?.id ?? null)) throw new Error('Cannot encode poll not visible for user');
        const noteUser = note.user ?? UserHelpers.getUserCached(note.userId, ctx);
        const host = Promise.resolve(noteUser).then((noteUser)=>noteUser.host ?? null);
        const noteEmoji = await host.then(async (host)=>populateEmojis(note.emojis, host).then((noteEmoji)=>noteEmoji.filter((e)=>e.name.indexOf("@") === -1).map((e)=>EmojiConverter.encode(e))));
        return populatePoll(note, user?.id ?? null).then((p)=>PollConverter.encode(p, note.id, noteEmoji));
    }
    static async voteInPoll(choices, note, ctx) {
        if (!note.hasPoll) throw new MastoApiError(404);
        const user = ctx.user;
        for (const choice of choices){
            const createdAt = new Date();
            if (!note.hasPoll) throw new MastoApiError(404);
            // Check blocking
            if (note.userId !== user.id) {
                const block = await Blockings.findOneBy({
                    blockerId: note.userId,
                    blockeeId: user.id
                });
                if (block) throw new Error('You are blocked by the poll author');
            }
            const poll = await Polls.findOneByOrFail({
                noteId: note.id
            });
            if (poll.expiresAt && poll.expiresAt < createdAt) throw new Error('Poll is expired');
            if (poll.choices[choice] == null) throw new Error('Invalid choice');
            // if already voted
            const exist = await PollVotes.findBy({
                noteId: note.id,
                userId: user.id
            });
            if (exist.length) {
                if (poll.multiple) {
                    if (exist.some((x)=>x.choice === choice)) throw new Error('You already voted for this option');
                } else {
                    throw new Error('You already voted in this poll');
                }
            }
            // Create vote
            const vote = await PollVotes.insert({
                id: genId(),
                createdAt,
                noteId: note.id,
                userId: user.id,
                choice: choice
            }).then((x)=>PollVotes.findOneByOrFail(x.identifiers[0]));
            // Increment votes count
            const index = choice + 1; // In SQL, array index is 1 based
            await Polls.query(`UPDATE poll SET votes[${index}] = votes[${index}] + 1 WHERE "noteId" = '${poll.noteId}'`);
            publishNoteStream(note.id, "pollVoted", {
                choice: choice,
                userId: user.id
            });
            // Notify
            createNotification(note.userId, "pollVote", {
                notifierId: user.id,
                noteId: note.id,
                choice: choice
            });
            // Fetch watchers
            NoteWatchings.findBy({
                noteId: note.id,
                userId: Not(user.id)
            }).then((watchers)=>{
                for (const watcher of watchers){
                    createNotification(watcher.userId, "pollVote", {
                        notifierId: user.id,
                        noteId: note.id,
                        choice: choice
                    });
                }
            });
            // リモート投票の場合リプライ送信
            if (note.userHost != null) {
                const pollOwner = await Users.findOneByOrFail({
                    id: note.userId
                });
                deliver(user, renderActivity(await renderVote(user, vote, note, poll, pollOwner)), pollOwner.inbox);
            }
        }
        return this.getPoll(note, ctx);
    }
}
