import { Announcements, AnnouncementReads } from "@/models/index.js";
import define from "../define.js";
import { makePaginationQuery } from "../common/make-pagination-query.js";

export const meta = {
	tags: ["meta"],

	requireCredential: false,
	requireCredentialPrivateMode: true,

	res: {
		type: "array",
		optional: false,
		nullable: false,
		items: {
			type: "object",
			optional: false,
			nullable: false,
			properties: {
				id: {
					type: "string",
					optional: false,
					nullable: false,
					format: "id",
					example: "xxxxxxxxxx",
				},
				createdAt: {
					type: "string",
					optional: false,
					nullable: false,
					format: "date-time",
				},
				updatedAt: {
					type: "string",
					optional: false,
					nullable: true,
					format: "date-time",
				},
				text: {
					type: "string",
					optional: false,
					nullable: false,
				},
				title: {
					type: "string",
					optional: false,
					nullable: false,
				},
				imageUrl: {
					type: "string",
					optional: false,
					nullable: true,
				},
				isRead: {
					type: "boolean",
					optional: true,
					nullable: false,
				},
			},
		},
	},
} as const;

export const paramDef = {
	type: "object",
	properties: {
		limit: { type: "integer", minimum: 1, maximum: 100, default: 10 },
		withUnreads: { type: "boolean", default: false },
		sinceId: { type: "string", format: "misskey:id" },
		untilId: { type: "string", format: "misskey:id" },
	},
	required: [],
} as const;

export default define(meta, paramDef, async (ps, user) => {
	const query = makePaginationQuery(
		Announcements.createQueryBuilder("announcement"),
		ps.sinceId,
		ps.untilId,
	);

	const announcements = await query.take(ps.limit).getMany();

	if (user) {
		const reads = (
			await AnnouncementReads.findBy({
				userId: user.id,
			})
		).map((x) => x.announcementId);

		for (const announcement of announcements) {
			(announcement as any).isRead = reads.includes(announcement.id);
		}
	}

	return (
		ps.withUnreads ? announcements.filter((a: any) => !a.isRead) : announcements
	).map((a) => ({
		...a,
		createdAt: a.createdAt.toISOString(),
		updatedAt: a.updatedAt?.toISOString() ?? null,
	}));
});