import { Users } from "@/models/index.js";
import define from "../define.js";
import { generateMutedUserQueryForUsers } from "../common/generate-muted-user-query.js";
import { generateBlockQueryForUsers } from "../common/generate-block-query.js";

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

	requireCredential: true,
	requireCredentialPrivateMode: true,

	res: {
		type: "array",
		optional: false,
		nullable: false,
		items: {
			type: "object",
			optional: false,
			nullable: false,
			ref: "UserDetailed",
		},
	},
} as const;

export const paramDef = {
	type: "object",
	properties: {
		limit: { type: "integer", minimum: 1, maximum: 100, default: 10 },
		offset: { type: "integer", default: 0 },
		sort: {
			type: "string",
			enum: [
				"+follower",
				"-follower",
				"+createdAt",
				"-createdAt",
				"+updatedAt",
				"-updatedAt",
			],
		},
		state: {
			type: "string",
			enum: ["all", "admin", "moderator", "adminOrModerator", "alive"],
			default: "all",
		},
		origin: {
			type: "string",
			enum: ["combined", "local", "remote"],
			default: "local",
		},
		hostname: {
			type: "string",
			nullable: true,
			default: null,
			description: "The local host is represented with `null`.",
		},
	},
	required: [],
} as const;

export default define(meta, paramDef, async (ps, me) => {
	const query = Users.createQueryBuilder("user");
	query.where("user.isExplorable = TRUE");

	switch (ps.state) {
		case "admin":
			query.andWhere("user.isAdmin = TRUE");
			break;
		case "moderator":
			query.andWhere("user.isModerator = TRUE");
			break;
		case "adminOrModerator":
			query.andWhere("user.isAdmin = TRUE OR user.isModerator = TRUE");
			break;
		case "alive":
			query.andWhere("user.updatedAt > :date", {
				date: new Date(Date.now() - 1000 * 60 * 60 * 24 * 5),
			});
			break;
	}

	switch (ps.origin) {
		case "local":
			query.andWhere("user.host IS NULL");
			break;
		case "remote":
			query.andWhere("user.host IS NOT NULL");
			break;
	}

	if (ps.hostname) {
		query.andWhere("user.host = :hostname", {
			hostname: ps.hostname.toLowerCase(),
		});
	}

	switch (ps.sort) {
		case "+follower":
			query.orderBy("user.followersCount", "DESC");
			break;
		case "-follower":
			query.orderBy("user.followersCount", "ASC");
			break;
		case "+createdAt":
			query.orderBy("user.createdAt", "DESC");
			break;
		case "-createdAt":
			query.orderBy("user.createdAt", "ASC");
			break;
		case "+updatedAt":
			query
				.andWhere("user.updatedAt IS NOT NULL")
				.orderBy("user.updatedAt", "DESC");
			break;
		case "-updatedAt":
			query
				.andWhere("user.updatedAt IS NOT NULL")
				.orderBy("user.updatedAt", "ASC");
			break;
		default:
			query.orderBy("user.id", "ASC");
			break;
	}

	if (me) generateMutedUserQueryForUsers(query, me);
	if (me) generateBlockQueryForUsers(query, me);

	query.take(ps.limit);
	query.skip(ps.offset);

	const users = await query.getMany();

	return await Users.packMany(users, me, { detail: true });
});