"use strict";

var async = require('async'),
	user = require('../../user'),
	meta = require('../../meta');


var usersController = {};

usersController.search = function(req, res, next) {
	res.render('admin/manage/users', {
		search_display: '',
		loadmore_display: 'hide',
		users: []
	});
};

usersController.sortByPosts = function(req, res, next) {
	getUsers('users:postcount', req, res, next);
};

usersController.sortByReputation = function(req, res, next) {
	getUsers('users:reputation', req, res, next);
};

usersController.sortByJoinDate = function(req, res, next) {
	getUsers('users:joindate', req, res, next);
};

usersController.banned = function(req, res, next) {
	getUsers('users:banned', req, res, next);
};

usersController.registrationQueue = function(req, res, next) {
	var invitations;
	async.parallel({
		users: function(next) {
			user.getRegistrationQueue(0, -1, next);
		},
		invites: function(next) {
			async.waterfall([
				function(next) {
					user.getAllInvites(next);
				},
				function(_invitations, next) {
					invitations = _invitations;
					async.map(invitations, function(invites, next) {
						user.getUserField(invites.uid, 'username', next);
					}, next);
				},
				function(usernames, next) {
					invitations.forEach(function(invites, index) {
						invites.username = usernames[index];
					});
					async.map(invitations, function(invites, next) {
						async.map(invites.invitations, user.getUsernameByEmail, next);
					}, next);
				},
				function(usernames, next) {
					invitations.forEach(function(invites, index) {
						invites.invitations = invites.invitations.map(function(email, i) {
							return {
								email: email,
								username: usernames[index][i] === '[[global:guest]]' ? '' : usernames[index][i]
							};
						});
					});
					next(null, invitations);
				}
			], next);
		}
	}, function(err, data) {
		if (err) {
			return next(err);
		}
		res.render('admin/manage/registration', data);
	});

};

function getUsers(set, req, res, next) {
	user.getUsersFromSet(set, req.uid, 0, 49, function(err, users) {
		if (err) {
			return next(err);
		}

		users = users.filter(function(user) {
			return user && parseInt(user.uid, 10);
		});

		res.render('admin/manage/users', {
			search_display: 'hidden',
			loadmore_display: 'block',
			users: users,
			yourid: req.uid,
			requireEmailConfirmation: parseInt(meta.config.requireEmailConfirmation, 10) === 1
		});
	});
}

usersController.getCSV = function(req, res, next) {
	user.getUsersCSV(function(err, data) {
		if (err) {
			return next(err);
		}
		res.attachment('users.csv');
		res.setHeader('Content-Type', 'text/csv');
		res.end(data);
	});
};

module.exports = usersController;