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

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

	requireCredential: true,
	requireModerator: 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,
				},
				reads: {
					type: "number",
					optional: false,
					nullable: false,
				},
			},
		},
	},
} as const;

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


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

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

	const reads = new Map<Announcement, number>();

	for (const announcement of announcements) {
		reads.set(
			announcement,
			await AnnouncementReads.countBy({
				announcementId: announcement.id,
			}),
		);
	}

	return announcements.map((announcement) => ({
		id: announcement.id,
		createdAt: announcement.createdAt.toISOString(),
		updatedAt: announcement.updatedAt?.toISOString() ?? null,
		title: announcement.title,
		text: announcement.text,
		imageUrl: announcement.imageUrl,
		reads: reads.get(announcement)!,
	}));
});