'use strict';

const 	hooks 	    = require('./hooks'),
	 	async 	    = require('async'),
	 	logger 	    = require('../logger'),
	 	utils 	    = require('../utils'),
		cache       = require('../cache'),
	 	db 	        = require('../db'),
		punishments = require('../punishments');

cache.sub('ip.ban', data => {
	utils.socketsFromIP(data.ip, sockets => {
		sockets.forEach(socket => {
			socket.emit('keep.event:banned', data.punishment);
			socket.disconnect(true);
		});
	});
});

module.exports = {

	/**
	 * Gets all punishments
	 *
	 * @param {Object} session - the session object automatically added by socket.io
	 * @param {Function} cb - gets called with the result
	 */
	index: hooks.adminRequired((session, cb) => {
		async.waterfall([
			(next) => {
				db.models.punishment.find({}, next);
			}
		], (err, punishments) => {
			if (err) {
				err = utils.getError(err);
				logger.error("PUNISHMENTS_INDEX", `Indexing punishments failed. "${err}"`);
				return cb({ 'status': 'failure', 'message': err});
			}
			logger.success("PUNISHMENTS_INDEX", "Indexing punishments successful.");
			cb({ status: 'success', data: punishments });
		});
	}),

	/**
	 * Bans an IP address
	 *
	 * @param {Object} session - the session object automatically added by socket.io
	 * @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
	 * @param {String} userId - the userId automatically added by hooks
	 */
	banIP: hooks.adminRequired((session, value, reason, expiresAt, cb, userId) => {
		async.waterfall([
			(next) => {
				if (value === '') return next('You must provide an IP address to ban.');
				else if (reason === '') return next('You must provide a reason for the ban.');
				else return next();
			},

			(next) => {
				if (!expiresAt || typeof expiresAt !== 'string') return next('Invalid expire date.');
				let 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.');
				}

				next();
			},

			(next) => {
				punishments.addPunishment('banUserIp', value, reason, expiresAt, userId, next)
			},

			(punishment, next) => {
				cache.pub('ip.ban', {ip: value, punishment});
				next();
			},
		], (err) => {
			if (err && err !== true) {
				err = utils.getError(err);
				logger.error("BAN_IP", `User ${userId} failed to ban IP address ${value} with the reason ${reason}. '${err}'`);
				cb({ status: 'failure', message: err });
			} else {
				logger.success("BAN_IP", `User ${userId} has successfully banned Ip address ${value} with the reason ${reason}.`);
				cb({
					status: 'success',
					message: 'Successfully banned IP address.'
				});
			}
		});
	}),

};