refactoring

Resolve #7779

packages/backend/src/server/api/endpoints/notes/polls/recommendation.ts

@@ -0,0 +1,77 @@
+import $ from 'cafy';
+import define from '../../../define';
+import { Polls, Mutings, Notes, PollVotes } from '@/models/index';
+import { Brackets, In } from 'typeorm';
+
+export const meta = {
+	tags: ['notes'],
+
+	requireCredential: true as const,
+
+	params: {
+		limit: {
+			validator: $.optional.num.range(1, 100),
+			default: 10
+		},
+
+		offset: {
+			validator: $.optional.num.min(0),
+			default: 0
+		}
+	},
+
+	res: {
+		type: 'array' as const,
+		optional: false as const, nullable: false as const,
+		items: {
+			type: 'object' as const,
+			optional: false as const, nullable: false as const,
+			ref: 'Note'
+		}
+	}
+};
+
+export default define(meta, async (ps, user) => {
+	const query = Polls.createQueryBuilder('poll')
+		.where('poll.userHost IS NULL')
+		.andWhere(`poll.userId != :meId`, { meId: user.id })
+		.andWhere(`poll.noteVisibility = 'public'`)
+		.andWhere(new Brackets(qb => { qb
+			.where('poll.expiresAt IS NULL')
+			.orWhere('poll.expiresAt > :now', { now: new Date() });
+		}));
+
+	//#region exclude arleady voted polls
+	const votedQuery = PollVotes.createQueryBuilder('vote')
+		.select('vote.noteId')
+		.where('vote.userId = :meId', { meId: user.id });
+
+	query
+		.andWhere(`poll.noteId NOT IN (${ votedQuery.getQuery() })`);
+
+	query.setParameters(votedQuery.getParameters());
+	//#endregion
+
+	//#region mute
+	const mutingQuery = Mutings.createQueryBuilder('muting')
+		.select('muting.muteeId')
+		.where('muting.muterId = :muterId', { muterId: user.id });
+
+	query
+		.andWhere(`poll.userId NOT IN (${ mutingQuery.getQuery() })`);
+
+	query.setParameters(mutingQuery.getParameters());
+	//#endregion
+
+	const polls = await query.take(ps.limit!).skip(ps.offset).getMany();
+
+	if (polls.length === 0) return [];
+
+	const notes = await Notes.find({
+		id: In(polls.map(poll => poll.noteId))
+	});
+
+	return await Notes.packMany(notes, user, {
+		detail: true
+	});
+});