import async from "async";

import { useHasPermission } from "../hooks/hasPermission";

// eslint-disable-next-line
import moduleManager from "../../index";

const DBModule = moduleManager.modules.db;
const UtilsModule = moduleManager.modules.utils;

export default {
	/**
	 * Gets album items, used in the admin album page by the AdvancedTable component
	 * @param {object} session - the session object automatically added by the websocket
	 * @param page - the page
	 * @param pageSize - the size per page
	 * @param properties - the properties to return for each album item
	 * @param sort - the sort object
	 * @param queries - the queries array
	 * @param operator - the operator for queries
	 * @param cb
	 */
	getData: useHasPermission(
		"admin.view.albums",
		async function getSet(session, page, pageSize, properties, sort, queries, operator, cb) {
			async.waterfall(
				[
					next => {
						DBModule.runJob(
							"GET_DATA",
							{
								page,
								pageSize,
								properties,
								sort,
								queries,
								operator,
								modelName: "albums",
								blacklistedProperties: [],
								specialProperties: {
									createdBy: [
										{
											$addFields: {
												createdByOID: {
													$convert: {
														input: "$createdBy",
														to: "objectId",
														onError: "unknown",
														onNull: "unknown"
													}
												}
											}
										},
										{
											$lookup: {
												from: "users",
												localField: "createdByOID",
												foreignField: "_id",
												as: "createdByUser"
											}
										},
										{
											$unwind: {
												path: "$createdByUser",
												preserveNullAndEmptyArrays: true
											}
										},
										{
											$addFields: {
												createdByUsername: {
													$ifNull: ["$createdByUser.username", "unknown"]
												}
											}
										},
										{
											$project: {
												createdByOID: 0,
												createdByUser: 0
											}
										}
									]
								},
								specialQueries: {
									createdBy: newQuery => ({
										$or: [newQuery, { createdByUsername: newQuery.createdBy }]
									})
								}
							},
							this
						)
							.then(response => {
								next(null, response);
							})
							.catch(err => {
								next(err);
							});
					}
				],
				async (err, response) => {
					if (err && err !== true) {
						err = await UtilsModule.runJob("GET_ERROR", { error: err }, this);
						this.log("ERROR", "ALBUMS_GET_DATA", `Failed to get data from albums. "${err}"`);
						return cb({ status: "error", message: err });
					}
					this.log("SUCCESS", "ALBUMS_GET_DATA", `Got data from albums successfully.`);
					return cb({
						status: "success",
						message: "Successfully got data from albums.",
						data: response
					});
				}
			);
		}
	)
};