refactoring

Resolve #7779

packages/backend/src/server/api/endpoints/channels/timeline.ts

@@ -0,0 +1,85 @@
+import $ from 'cafy';
+import { ID } from '@/misc/cafy-id';
+import define from '../../define';
+import { ApiError } from '../../error';
+import { Notes, Channels } from '@/models/index';
+import { makePaginationQuery } from '../../common/make-pagination-query';
+import { activeUsersChart } from '@/services/chart/index';
+
+export const meta = {
+	tags: ['notes', 'channels'],
+
+	requireCredential: false as const,
+
+	params: {
+		channelId: {
+			validator: $.type(ID),
+		},
+
+		limit: {
+			validator: $.optional.num.range(1, 100),
+			default: 10,
+		},
+
+		sinceId: {
+			validator: $.optional.type(ID),
+		},
+
+		untilId: {
+			validator: $.optional.type(ID),
+		},
+
+		sinceDate: {
+			validator: $.optional.num,
+		},
+
+		untilDate: {
+			validator: $.optional.num,
+		},
+	},
+
+	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',
+		}
+	},
+
+	errors: {
+		noSuchChannel: {
+			message: 'No such channel.',
+			code: 'NO_SUCH_CHANNEL',
+			id: '4d0eeeba-a02c-4c3c-9966-ef60d38d2e7f'
+		}
+	}
+};
+
+export default define(meta, async (ps, user) => {
+	const channel = await Channels.findOne({
+		id: ps.channelId,
+	});
+
+	if (channel == null) {
+		throw new ApiError(meta.errors.noSuchChannel);
+	}
+
+	//#region Construct query
+	const query = makePaginationQuery(Notes.createQueryBuilder('note'), ps.sinceId, ps.untilId, ps.sinceDate, ps.untilDate)
+		.andWhere('note.channelId = :channelId', { channelId: channel.id })
+		.innerJoinAndSelect('note.user', 'user')
+		.leftJoinAndSelect('note.reply', 'reply')
+		.leftJoinAndSelect('note.renote', 'renote')
+		.leftJoinAndSelect('reply.user', 'replyUser')
+		.leftJoinAndSelect('renote.user', 'renoteUser')
+		.leftJoinAndSelect('note.channel', 'channel');
+	//#endregion
+
+	const timeline = await query.take(ps.limit!).getMany();
+
+	if (user) activeUsersChart.update(user);
+
+	return await Notes.packMany(timeline, user);
+});