var request = require('request');
var Promise = require('promise');

var requestPromise = function(url, urlArgs) {
	var promise = new Promise(function(resolve, reject) {
		request({
			url: url,
			qs: urlArgs,
			json: false
		}, function(error, response, body) {
			if(!error && response.statusCode == 200) {
				resolve(JSON.parse(body));
			} else {
				reject(error);
			}
		});
	});
	return promise;
};



/**
 * weather API module.
 * @module kulmapaikka/owmapi
 */
module.exports = function(config) {
	'use strict';
		
	var apikey = config.keys.owm.apiKey;
	return {
		/** Get temperatures from Pena API (Aura) */
		getTemperature: function(city, code) {
			var language = 'fi';

			var urlArgs = {
				'q': city,
				'lang': language,
				'APPID': apikey 
			};
			var url = 'http://api.openweathermap.org/data/2.5/weather';	
			var promise = requestPromise(url, urlArgs);

			return promise;		
		},
		getTemperatures: function(cities, code) {
			if(typeof code === 'undefined') {
				code = 'fi';
			}
			var language = 'fi';

			var idList = '';
			for(var city in cities) {
				idList += cities[city] + ',';
			}
			idList = idList.substring(0,idList.length - 1);


			var urlArgs = {
				'id': idList,
				'lang': language,
				'APPID': apikey 
			};
			var url = 'http://api.openweathermap.org/data/2.5/group';	
			var promise = requestPromise(url, urlArgs);

			return promise;		
		}
	};
};