var user = require('./../user.js'),
	auth = require('./authentication.js'),
	topics = require('./../topics.js'),
	posts = require('./../posts.js'),
	categories = require('./../categories.js'),
	utils = require('./../../public/src/utils.js'),
	pkg = require('../../package.json'),
	meta = require('./../meta.js'),
	path = require('path'),
	nconf = require('nconf'),
	async = require('async');


(function (Api) {
	Api.create_routes = function (app) {
		app.namespace('/api', function () {
			app.get('/get_templates_listing', function (req, res) {
				utils.walk(path.join(__dirname, '../../', 'public/templates'), function (err, data) {
					res.json(data);
				});
			});

			app.get('/config', function (req, res, next) {
				var config = require('../../public/config.json');

				config.postDelay = meta.config.postDelay;
				config.minimumTitleLength = meta.config.minimumTitleLength;
				config.minimumPostLength = meta.config.minimumPostLength;
				config.imgurClientIDSet = !! meta.config.imgurClientID;
				config.minimumUsernameLength = meta.config.minimumUsernameLength;
				config.maximumUsernameLength = meta.config.maximumUsernameLength;
				config.minimumPasswordLength = meta.config.minimumPasswordLength;
				config.useOutgoingLinksPage = meta.config.useOutgoingLinksPage;

				res.json(200, config);
			});

			app.get('/home', function (req, res) {
				var uid = (req.user) ? req.user.uid : 0;
				categories.getAllCategories(function (data) {
					data.categories = data.categories.filter(function (category) {
						return (!category.disabled || category.disabled === "0");
					});

					function iterator(category, callback) {
						categories.getRecentReplies(category.cid, 2, function (posts) {
							category.posts = posts;
							category.post_count = posts.length > 2 ? 2 : posts.length;
							callback(null);
						});
					}

					async.each(data.categories, iterator, function (err) {
						data.motd_class = (meta.config.show_motd === '1' || meta.config.show_motd === undefined) ? '' : ' none';
						data.motd_class += (meta.config.motd.length > 0 ? '' : ' default');

						data.motd = require('marked')(meta.config.motd || "<div class=\"pull-right btn-group\"><a target=\"_blank\" href=\"http://www.nodebb.org\" class=\"btn btn-default btn-lg\"><i class=\"icon-comment\"></i><span class='hidden-mobile'>&nbsp;Get NodeBB</span></a> <a target=\"_blank\" href=\"https://github.com/designcreateplay/NodeBB\" class=\"btn btn-default btn-lg\"><i class=\"icon-github-alt\"></i><span class='hidden-mobile'>&nbsp;Fork us on Github</span></a> <a target=\"_blank\" href=\"https://twitter.com/dcplabs\" class=\"btn btn-default btn-lg\"><i class=\"icon-twitter\"></i><span class='hidden-mobile'>&nbsp;@dcplabs</span></a></div>\n\n# NodeBB <span>v" + pkg.version + "</span>\nWelcome to NodeBB, the discussion platform of the future.");
						res.json(data);
					});

				}, uid);
			});

			app.get('/login', function (req, res) {
				var data = {},
					login_strategies = auth.get_login_strategies(),
					num_strategies = login_strategies.length;

				if (num_strategies == 0) {
					data = {
						'login_window:spansize': 'col-md-12',
						'alternate_logins:display': 'none'
					};
				} else {
					data = {
						'login_window:spansize': 'col-md-6',
						'alternate_logins:display': 'block'
					}
					for (var i = 0, ii = num_strategies; i < ii; i++) {
						data[login_strategies[i] + ':display'] = 'active';
					}
				}

				data.token = res.locals.csrf_token;

				res.json(data);
			});

			app.get('/register', function (req, res) {
				var data = {},
					login_strategies = auth.get_login_strategies(),
					num_strategies = login_strategies.length;

				if (num_strategies == 0) {
					data = {
						'register_window:spansize': 'col-md-12',
						'alternate_logins:display': 'none'
					};
				} else {
					data = {
						'register_window:spansize': 'col-md-6',
						'alternate_logins:display': 'block'
					}
					for (var i = 0, ii = num_strategies; i < ii; i++) {
						data[login_strategies[i] + ':display'] = 'active';
					}
				}

				data.token = res.locals.csrf_token;
				data.minimumUsernameLength = meta.config['minimumUsernameLength'];
				data.maximumUsernameLength = meta.config['maximumUsernameLength'];
				data.minimumPasswordLength = meta.config['minimumPasswordLength'];
				res.json(data);
			});

			app.get('/topic/:id/:slug?', function (req, res, next) {
				var uid = (req.user) ? req.user.uid : 0;
				topics.getTopicWithPosts(req.params.id, uid, 0, 10, function (err, data) {
					if (!err) {
						if (data.deleted === '1' && data.expose_tools === 0) {
							return res.json(404, {});
						}
						res.json(data);
					} else next();
				});
			});

			app.get('/category/:id/:slug?', function (req, res, next) {
				var uid = (req.user) ? req.user.uid : 0;
				categories.getCategoryById(req.params.id, uid, function (err, data) {
					if (!err && data && data.disabled === "0")
						res.json(data);
					else
						next();
				}, req.params.id, uid);
			});

			app.get('/recent/:term?', function (req, res) {
				var uid = (req.user) ? req.user.uid : 0;
				topics.getLatestTopics(uid, 0, 19, req.params.term, function (data) {
					res.json(data);
				});
			});

			app.get('/unread', function (req, res) {
				var uid = (req.user) ? req.user.uid : 0;
				topics.getUnreadTopics(uid, 0, 19, function (data) {
					res.json(data);
				});
			});

			app.get('/unread/total', function (req, res) {
				var uid = (req.user) ? req.user.uid : 0;
				topics.getTotalUnread(uid, function (data) {
					res.json(data);
				});
			});

			app.get('/notifications', function(req, res) {
				if (req.user && req.user.uid) {
					user.notifications.getAll(req.user.uid, null, null, function(err, notifications) {
						res.json({
							notifications: notifications
						});
					});
				} else res.send(403);
			});

			app.get('/confirm/:id', function (req, res) {
				user.email.confirm(req.params.id, function (data) {
					if (data.status === 'ok') {
						res.json({
							'alert-class': 'alert-success',
							title: 'Email Confirmed',
							text: 'Thank you for vaidating your email. Your account is now fully activated.'
						});
					} else {
						res.json({
							'alert-class': 'alert-error',
							title: 'An error occurred...',
							text: 'There was a problem validating your email address. Perhaps the code was invalid or has expired.'
						});
					}
				});
			});

			app.get('/outgoing', function (req, res) {
				var url = req.query.url;

				if (url) {
					res.json({
						url: url
					});
				} else {
					res.status(404);
					res.redirect(nconf.get('relative_path') + '/404');
				}
			});

			app.get('/search', function (req, res) {
				return res.json({
					show_no_topics: 'hide',
					show_no_posts: 'hide',
					show_results: 'hide',
					search_query: '',
					posts: [],
					topics: []
				});
			});

			app.get('/search/:term', function (req, res, next) {

				var reds = require('reds');
				var postSearch = reds.createSearch('nodebbpostsearch');
				var topicSearch = reds.createSearch('nodebbtopicsearch');

				function search(searchObj, callback) {
					searchObj
						.query(query = req.params.term).type('or')
						.end(callback);
				}

				function searchPosts(callback) {
					search(postSearch, function (err, pids) {
						if (err)
							return callback(err, null);

						posts.getPostSummaryByPids(pids, function (err, posts) {
							if (err)
								return callback(err, null);
							callback(null, posts);
						});
					})
				}

				function searchTopics(callback) {
					search(topicSearch, function (err, tids) {
						if (err)
							return callback(err, null);

						topics.getTopicsByTids(tids, 0, function (topics) {
							callback(null, topics);
						}, 0);
					});
				}

				async.parallel([searchPosts, searchTopics], function (err, results) {
					if (err)
						return next();

					return res.json({
						show_no_topics: results[1].length ? 'hide' : '',
						show_no_posts: results[0].length ? 'hide' : '',
						show_results: '',
						search_query: req.params.term,
						posts: results[0],
						topics: results[1]
					});
				});
			});

			app.get('/reset', function (req, res) {
				res.json({});
			});

			app.get('/reset/:code', function (req, res) {
				res.json({
					reset_code: req.params.code
				});
			});

			app.get('/404', function (req, res) {
				res.json({});
			});

			app.get('/403', function (req, res) {
				res.json({});
			});
		});
	}
}(exports));