var UAParser = require('ua-parser-js');
var parser = new UAParser();

module.exports = function(config, mongoose) {
	var Fingerprint = mongoose.model('Fingerprint');

	return {
		create: function(req, res, next) {
			Fingerprint.create(req.body, function(err, fp) {
				if(err) return next(err);

				res.status(200).data.fingerprint = fp;
				next();
			});
		},

		findAll: function(req, res, next) {

		},

		push: function(req, res, next) {
			var ua = req.get('user-agent');
			parser.setUA(ua);
			var uaParsed = _.omit(parser.getResult(), 'ua');
			var headers = _.omit(req.headers, [ 'cookie', 'user-agent' ]);
			var ip = req.ip;

			var clientFingerprint = _.extend({
				ip: ip,
				ua: ua,
				uaParsed: uaParsed,
				headers: headers
			}, req.body);

			res.data.clientFingerprint = clientFingerprint;

			if(req.params.id !== 'null') {
				Fingerprint.findById( req.params.id, function(err, fp) {
					if(err) return next(err);

					if(fp) {
						if(!_.find(fp.client, { ua: ua })) {

							fp.client.push(clientFingerprint);
						
							fp.save(function(err, fp) {
								if(err) console.error(err);

								res.status(201);

								next();
							});
						} else {
							next();
						}
					} else {
						next();
					}
				});
			} else {
				res.status(200);
				next();
			}
		}
	};
};