import async from "async";

import { isAdminRequired } from "./hooks";

import moduleManager from "../../index";

const DBModule = moduleManager.modules.db;
const UtilsModule = moduleManager.modules.utils;
const WSModule = moduleManager.modules.ws;
const CacheModule = moduleManager.modules.cache;
const PunishmentsModule = moduleManager.modules.punishments;

CacheModule.runJob("SUB", {
	channel: "ip.ban",
	cb: data => {
		WSModule.runJob("EMIT_TO_ROOM", {
			room: "admin.punishments",
			args: ["event:admin.punishment.created", { data: { punishment: data.punishment } }]
		});

		WSModule.runJob("SOCKETS_FROM_IP", { ip: data.ip }, this).then(sockets => {
			sockets.forEach(socket => {
				socket.disconnect(true);
			});
		});
	}
});

export default {
	/**
	 * Gets punishments, used in the admin punishments 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 punishment
	 * @param sort - the sort object
	 * @param queries - the queries array
	 * @param operator - the operator for queries
	 * @param cb
	 */
	getData: isAdminRequired(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: "punishment",
							blacklistedProperties: [],
							specialProperties: {
								status: [
									{
										$addFields: {
											status: {
												$cond: [
													{ $eq: ["$active", true] },
													{
														$cond: [
															{ $gt: [new Date(), "$expiresAt"] },
															"Inactive",
															"Active"
														]
													},
													"Inactive"
												]
											}
										}
									}
								],
								value: [
									{
										$addFields: {
											valueOID: {
												$convert: {
													input: "$value",
													to: "objectId",
													onError: "unknown",
													onNull: "unknown"
												}
											}
										}
									},
									{
										$lookup: {
											from: "users",
											localField: "valueOID",
											foreignField: "_id",
											as: "valueUser"
										}
									},
									{
										$unwind: {
											path: "$valueUser",
											preserveNullAndEmptyArrays: true
										}
									},
									{
										$addFields: {
											valueUsername: {
												$cond: [
													{ $eq: ["$type", "banUserId"] },
													{ $ifNull: ["$valueUser.username", "unknown"] },
													null
												]
											}
										}
									},
									{
										$project: {
											valueOID: 0,
											valueUser: 0
										}
									}
								],
								punishedBy: [
									{
										$addFields: {
											punishedByOID: {
												$convert: {
													input: "$punishedBy",
													to: "objectId",
													onError: "unknown",
													onNull: "unknown"
												}
											}
										}
									},
									{
										$lookup: {
											from: "users",
											localField: "punishedByOID",
											foreignField: "_id",
											as: "punishedByUser"
										}
									},
									{
										$unwind: {
											path: "$punishedByUser",
											preserveNullAndEmptyArrays: true
										}
									},
									{
										$addFields: {
											punishedByUsername: {
												$ifNull: ["$punishedByUser.username", "unknown"]
											}
										}
									},
									{
										$project: {
											punishedByOID: 0,
											punishedByUser: 0
										}
									}
								]
							},
							specialQueries: {
								value: newQuery => ({ $or: [newQuery, { valueUsername: newQuery.value }] }),
								punishedBy: newQuery => ({
									$or: [newQuery, { punishedByUsername: newQuery.punishedBy }]
								})
							}
						},
						this
					)
						.then(response => {
							next(null, response);
						})
						.catch(err => {
							next(err);
						});
				}
			],
			async (err, response) => {
				if (err && err !== true) {
					err = await UtilsModule.runJob("GET_ERROR", { error: err }, this);
					this.log("ERROR", "PUNISHMENTS_GET_DATA", `Failed to get data from punishments. "${err}"`);
					return cb({ status: "error", message: err });
				}
				this.log("SUCCESS", "PUNISHMENTS_GET_DATA", `Got data from punishments successfully.`);
				return cb({
					status: "success",
					message: "Successfully got data from punishments.",
					data: response
				});
			}
		);
	}),

	/**
	 * Gets all punishments for a user
	 *
	 * @param {object} session - the session object automatically added by the websocket
	 * @param {string} userId - the id of the user
	 * @param {Function} cb - gets called with the result
	 */
	getPunishmentsForUser: isAdminRequired(async function getPunishmentsForUser(session, userId, cb) {
		const punishmentModel = await DBModule.runJob("GET_MODEL", { modelName: "punishment" }, this);

		punishmentModel.find({ type: "banUserId", value: userId }, async (err, punishments) => {
			if (err) {
				err = await UtilsModule.runJob("GET_ERROR", { error: err }, this);

				this.log(
					"ERROR",
					"GET_PUNISHMENTS_FOR_USER",
					`Getting punishments for user ${userId} failed. "${err}"`
				);

				return cb({ status: "error", message: err });
			}

			this.log("SUCCESS", "GET_PUNISHMENTS_FOR_USER", `Got punishments for user ${userId} successful.`);
			return cb({ status: "success", data: { punishments } });
		});
	}),

	/**
	 * Returns a punishment by id
	 *
	 * @param {object} session - the session object automatically added by the websocket
	 * @param {string} punishmentId - the punishment id
	 * @param {Function} cb - gets called with the result
	 */
	findOne: isAdminRequired(async function findOne(session, punishmentId, cb) {
		const punishmentModel = await DBModule.runJob("GET_MODEL", { modelName: "punishment" }, this);

		async.waterfall([next => punishmentModel.findOne({ _id: punishmentId }, next)], async (err, punishment) => {
			if (err) {
				err = await UtilsModule.runJob("GET_ERROR", { error: err }, this);
				this.log(
					"ERROR",
					"GET_PUNISHMENT_BY_ID",
					`Getting punishment with id ${punishmentId} failed. "${err}"`
				);
				return cb({ status: "error", message: err });
			}
			this.log("SUCCESS", "GET_PUNISHMENT_BY_ID", `Got punishment with id ${punishmentId} successful.`);
			return cb({ status: "success", data: { punishment } });
		});
	}),

	/**
	 * Bans an IP address
	 *
	 * @param {object} session - the session object automatically added by the websocket
	 * @param {string} value - the ip address that is going to be banned
	 * @param {string} reason - the reason for the ban
	 * @param {string} expiresAt - the time the ban expires
	 * @param {Function} cb - gets called with the result
	 */
	banIP: isAdminRequired(function banIP(session, value, reason, expiresAt, cb) {
		async.waterfall(
			[
				next => {
					if (!value) return next("You must provide an IP address to ban.");
					if (!reason) return next("You must provide a reason for the ban.");
					return next();
				},

				next => {
					if (!expiresAt || typeof expiresAt !== "string") return next("Invalid expire date.");
					const date = new Date();
					switch (expiresAt) {
						case "1h":
							expiresAt = date.setHours(date.getHours() + 1);
							break;
						case "12h":
							expiresAt = date.setHours(date.getHours() + 12);
							break;
						case "1d":
							expiresAt = date.setDate(date.getDate() + 1);
							break;
						case "1w":
							expiresAt = date.setDate(date.getDate() + 7);
							break;
						case "1m":
							expiresAt = date.setMonth(date.getMonth() + 1);
							break;
						case "3m":
							expiresAt = date.setMonth(date.getMonth() + 3);
							break;
						case "6m":
							expiresAt = date.setMonth(date.getMonth() + 6);
							break;
						case "1y":
							expiresAt = date.setFullYear(date.getFullYear() + 1);
							break;
						case "never":
							expiresAt = new Date(3093527980800000);
							break;
						default:
							return next("Invalid expire date.");
					}

					return next();
				},

				next => {
					PunishmentsModule.runJob(
						"ADD_PUNISHMENT",
						{
							type: "banUserIp",
							value,
							reason,
							expiresAt,
							punishedBy: session.userId
						},
						this
					)
						.then(punishment => {
							next(null, punishment);
						})
						.catch(next);
				}
			],
			async (err, punishment) => {
				if (err && err !== true) {
					err = await UtilsModule.runJob("GET_ERROR", { error: err }, this);
					this.log(
						"ERROR",
						"BAN_IP",
						`User ${session.userId} failed to ban IP address ${value} with the reason ${reason}. '${err}'`
					);
					cb({ status: "error", message: err });
				}
				this.log(
					"SUCCESS",
					"BAN_IP",
					`User ${session.userId} has successfully banned IP address ${value} with the reason ${reason}.`
				);
				CacheModule.runJob("PUB", {
					channel: "ip.ban",
					value: { ip: value, punishment }
				});
				return cb({
					status: "success",
					message: "Successfully banned IP address."
				});
			}
		);
	})
};
