/*
* Wettervorhersage
*
*/

(function($) {
	$.extend({
		wetter: function(options){
			var options = $.extend({
				zipcode: '',
				location: '',
				unit: 'c',
				success: function(weather){},
				error: function(message){}
				}, options);

				var weatherUrl = 'http://query.yahooapis.com/v1/public/yql?format=json&diagnostics=true&callback=?&diagnostics=true&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys&q=';
				if(options.location != '')
				weatherUrl += 'select * from weather.forecast where location in (select id from weather.search where query="'+options.location+'") and u="'+options.unit+'"';
				else if(options.zipcode != '')
				weatherUrl += 'select * from weather.forecast where location in ("'+options.zipcode+'") and u="'+options.unit+'"';
				else {
					options.error("No location given.");
					return false;
				}

				$.getJSON(
					weatherUrl,
					function(data) {
						if(data != null && data.query.results != null) {
							$.each(data.query.results, function(i, result) {
								if (result.constructor.toString().indexOf("Array") != -1)
								result = result[0];

								currentDate = new Date();
								sunRise = new Date(currentDate.toDateString() +' '+ result.astronomy.sunrise);
								sunSet = new Date(currentDate.toDateString() +' '+ result.astronomy.sunset);
								if (currentDate>sunRise && currentDate<sunSet)
								timeOfDay = 'd';
								else
								timeOfDay = 'n';

								wind = result.wind.direction;
								if (wind>338)
								windDirection = "N";
								else if (wind>=0 && wind<24)
								windDirection = "N";
								else if (wind>=24 && wind<69)
								windDirection = "NE";
								else if (wind>=69 && wind<114)
								windDirection = "E";
								else if (wind>=114 && wind<186)
								windDirection = "SE";
								else if (wind>=186 && wind<204)
								windDirection = "S";
								else if (wind>=204 && wind<249)
								windDirection = "SW";
								else if (wind>=249 && wind<294)
								windDirection = "W";
								else if (wind>=294 && wind<338)
								windDirection = "NW";

								var weather = {
									title: result.item.title,
									temp: result.item.condition.temp,
									units:{
										temp: result.units.temperature,
										distance: result.units.distance,
										pressure: result.units.pressure,
										speed: result.units.speed
									},
									currently: result.item.condition.text,
									high: result.item.forecast[0].high,
									low: result.item.forecast[0].low,
									forecast: result.item.forecast[0].text,
									wind:{
										chill: result.wind.chill,
										direction: windDirection,
										speed: result.wind.speed
									},
									humidity: result.atmosphere.humidity,
									pressure: result.atmosphere.pressure,
									rising: result.atmosphere.rising,
									visibility: result.atmosphere.visibility,
									sunrise: result.astronomy.sunrise,
									sunset: result.astronomy.sunset,
									description: result.item.description,
									thumbnail: "http://l.yimg.com/a/i/us/nws/weather/gr/"+result.item.condition.code+timeOfDay+"s.png",
									image: "http://l.yimg.com/a/i/us/nws/weather/gr/"+result.item.condition.code+timeOfDay+".png",
									tomorrow:{
										high: result.item.forecast[1].high,
										low: result.item.forecast[1].low,
										forecast: result.item.forecast[1].text,
										date: result.item.forecast[1].date,
										day: result.item.forecast[1].day,
										image: "http://l.yimg.com/a/i/us/nws/weather/gr/"+result.item.forecast[1].code+"d.png"
									},
									city: result.location.city,
									country: result.location.country,
									region: result.location.region,
									updated: result.item.pubDate,
									link: result.item.link
								};

								options.success(weather);
							});
						} else {
							if (data.query.results == null)
							options.error("Invalid location given.");
							else
							options.error("Weather could not be displayed. Try again.");
						}
					}
				);
				return this;
			}
		});
		})(jQuery);