'use strict';

var util = require('util'),
	https = require('https'),
	winston = require('winston'),
	querystring = require('querystring');

var PushoverLogger = winston.transports.PushoverLogger = function (options) {
	this.token = options.token;
	this.user = options.user;

	this.name = 'Pushover.net Logger';
	this.level = options.level || 'error';
};

util.inherits(PushoverLogger, winston.Transport);

PushoverLogger.prototype.log = function (level, msg, meta, callback) {
	if (!callback) {
		callback = function () {};
	}

	var parameters = querystring.stringify({
			priority: 1,
			token: this.token,
			user: this.user,
			message: 'An error has occurred: ' + msg
		}),
		req = https.request({
			method: 'POST',
			hostname: 'api.pushover.net',
			path: '/1/messages.json',
			headers: {
				'Content-Type': 'application/x-www-form-urlencoded',
				'Content-Length': parameters.length
			}
		}, function (res) {
			var output = "";

			res.setEncoding('utf8');

			res.on('data', function (chunk) { output += chunk; });

			res.on('end', function () {
				try {
					var jsonOutput = JSON.parse(output);
					callback(null, jsonOutput);
				} catch (err) {
					callback(err);
				}
			});
		}).on('error', function (err) {
			callback(err);
		});

	req.write(parameters);
	req.end();
};