refactoring

Resolve #7779

packages/backend/src/server/api/endpoints/messaging/history.ts

@@ -0,0 +1,94 @@
+import $ from 'cafy';
+import define from '../../define';
+import { MessagingMessage } from '@/models/entities/messaging-message';
+import { MessagingMessages, Mutings, UserGroupJoinings } from '@/models/index';
+import { Brackets } from 'typeorm';
+
+export const meta = {
+	tags: ['messaging'],
+
+	requireCredential: true as const,
+
+	kind: 'read:messaging',
+
+	params: {
+		limit: {
+			validator: $.optional.num.range(1, 100),
+			default: 10
+		},
+
+		group: {
+			validator: $.optional.bool,
+			default: false
+		}
+	},
+
+	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: 'MessagingMessage',
+		}
+	},
+};
+
+export default define(meta, async (ps, user) => {
+	const mute = await Mutings.find({
+		muterId: user.id,
+	});
+
+	const groups = ps.group ? await UserGroupJoinings.find({
+		userId: user.id,
+	}).then(xs => xs.map(x => x.userGroupId)) : [];
+
+	if (ps.group && groups.length === 0) {
+		return [];
+	}
+
+	const history: MessagingMessage[] = [];
+
+	for (let i = 0; i < ps.limit!; i++) {
+		const found = ps.group
+			? history.map(m => m.groupId!)
+			: history.map(m => (m.userId === user.id) ? m.recipientId! : m.userId!);
+
+		const query = MessagingMessages.createQueryBuilder('message')
+			.orderBy('message.createdAt', 'DESC');
+
+		if (ps.group) {
+			query.where(`message.groupId IN (:...groups)`, { groups: groups });
+
+			if (found.length > 0) {
+				query.andWhere(`message.groupId NOT IN (:...found)`, { found: found });
+			}
+		} else {
+			query.where(new Brackets(qb => { qb
+				.where(`message.userId = :userId`, { userId: user.id })
+				.orWhere(`message.recipientId = :userId`, { userId: user.id });
+			}));
+			query.andWhere(`message.groupId IS NULL`);
+
+			if (found.length > 0) {
+				query.andWhere(`message.userId NOT IN (:...found)`, { found: found });
+				query.andWhere(`message.recipientId NOT IN (:...found)`, { found: found });
+			}
+
+			if (mute.length > 0) {
+				query.andWhere(`message.userId NOT IN (:...mute)`, { mute: mute.map(m => m.muteeId) });
+				query.andWhere(`message.recipientId NOT IN (:...mute)`, { mute: mute.map(m => m.muteeId) });
+			}
+		}
+
+		const message = await query.getOne();
+
+		if (message) {
+			history.push(message);
+		} else {
+			break;
+		}
+	}
+
+	return await Promise.all(history.map(h => MessagingMessages.pack(h.id, user)));
+});