var WeatherRetriever = {
	map: {
		"\u6674":14,
		"\u591a\u4e91":1,
		"\u9634":4,
		"\u96fe":11,
		"\u7279\u5927\u66b4\u96e8":9,
		"\u5927\u66b4\u96e8":9,
		"\u66b4\u96e8":9,
		"\u96f7\u9635\u96e8":3,
		"\u9635\u96e8":10,
		"\u5927\u96e8":9,
		"\u4e2d\u96e8":9,
		"\u5c0f\u96e8":9,
		"\u96e8\u5939\u96ea":13,
		"\u66b4\u96ea":15,
		"\u9635\u96ea":15,
		"\u5927\u96ea":15,
		"\u4e2d\u96ea":15,
		"\u5c0f\u96ea":6,
		"\u5f3a\u6c99\u5c18\u66b4":2,
		"\u6c99\u5c18\u66b4":2,
		"\u6c99\u5c18":2,
		"\u626c\u6c99":5,
		"\u51b0\u96f9":8,
		"\u6d6e\u5c18":1,
		"\u973e":12
	},

	imageMap: {
		"0": "14", "1": "1", "2": "4", "3": "10", "4": "3", "5": "3", "6": "13", "7": "9",
		"8": "9", "9": "9", "10": "9", "11": "9", "12": "9", "13": "15", "14": "6", "15": "15",
		"16": "15", "17": "15", "18": "11", "19": "9", "20": "2", "21": "9", "22": "9", "23": "9",
		"24": "9", "25": "9", "26": "6", "27": "15", "28": "15", "29": "2", "30": "5", "31": "2",
		"32": "12", "33": "4", "34": "4", "35": "4"
	},

	retrieve: function(city, date, time, callback) {
		var days = (Util.date.parse(date) - Util.date.floor()) / 86400000,
			code = CityMap.name2weather[city];

		if (!code) {
			return ;
		}

		if (days < 0 || days > 6) {
			return ;
		}

		var currentTime = Util.date.formatTime(),
			offset = days * 2;

		if (currentTime < '18:00') {
			offset += 1;
		}
		//假设不存在起落在同日8:00前的航班；起飞时间在8:00前，天气认为是白天天气
		if (time >= '20:00') {
			offset += 1;
		}

		$.getJSON(config.urls.weather + code, function(data) {
			var img = data.yb[days ? 'img' + offset : 'img_single'],
				title = data.yb[days ? 'img_title' + offset : 'img_title_single'];

			if (img === '99') {
				img = 'img' + (offset - 1);
			}

			callback && callback(img, title);
		});
	},

	fill: function(element, date) {
		for (i=0; i<=15; i++) {
			$('.weather .icon', element).removeClass('weatherIcon' + i);
		}
		$('.weather .icon', element).addClass('weatherIcon0');
		$('.weather .text', element).text('无法获取').addClass('noText');

		this.retrieve($('.point', element).text(), date, $('.time',element).text(), function(weatherImg, weatherTitle) {
			var i;

			if (WeatherRetriever.imageMap[weatherImg] !== undefined) {
				$('.weather .icon', element).removeClass('weatherIcon0').addClass('weatherIcon' + WeatherRetriever.imageMap[weatherImg]);
				$('.weather .text', element).text(weatherTitle).removeClass('noText');
				$('.weather .text,.icon', element).hide().fadeIn('slow');
			}
		});
	}
};