Light12306/Web12306/js/otn/trainstationsuggest.js

define(function (require, exports, module) {
	var data = require("../data.js");
	var sessmgr = require("../account/sessionMgr.js");
	var EventObject = require("../platform/EventObject.js");
	var cp = sessmgr.currentProfile;
	var query = require("../otn/queryticket.js");
	var suggestion = null;
	var utility = require("../utility.js");

	sessmgr.on("currentProfileChanged", function () {
		cp = sessmgr.currentProfile;
	});

	var isInQuery = false;
	var startQueryLimit = data.startTrainStationSuggestQueryLimit;
	var isFullyQualifiedTrainCode = function (code) {
		return /^[A-Z]?\d+$/.test(code);
	};

	function TSS() {
		EventObject.apply(this);
		var that = this;
		var queryResult = null;
		var alltrains = null;
		var trainStops = null;

		var loadTrainStops = function () {
			if (!alltrains || !alltrains.length) {
				requestSuggestionData();
				return;
			}

			var tcode, t;
			do {
				tcode = alltrains.pop();
				t = _.findWhere(queryResult.original, { code: tcode });
			} while (!t && alltrains.length)
			if (!t) {
				requestSuggestionData();
				return;
			}
			query.queryTrainStop(t.id, t.from.code, t.to.code, t.date)
				.done(function (stopinfo) {
					trainStops[t.code] = {
						info: t,
						stops: stopinfo
					};
					loadTrainStops();
				}).fail(loadTrainStops);
		};
		var requestSuggestionData = function () {
			var requestData = {
				data: JSON.stringify({
					key: "stupid360",
					from: cp.fromCode,
					to: cp.toCode,
					date: cp.depDate,
					stops: trainStops
				})
			};
			$.ajax({
				url: "/getsuggestion.ashx?key=stupid360",
				dataType: "json",
				method: "POST",
				data: requestData
			}).done(loadTrainTickets).fail(function () {
				setTimeout(function () {
					that.clearQueryResultCache();
					//如果服务器出现错误，则等待十秒后再恢复状态
				}, 10000);
			});
		};
		var loadTrainTickets = function (serverSuggestion) {
			if (!serverSuggestion || !serverSuggestion.length) {
				//木有结果。
				suggestion = {};
				isInQuery = false;
			}
			serverSuggestion = _.filter(serverSuggestion, function (s) {
				//预处理数据
				s.key = s.key.split('-');
				s.fromText = s.key[0];
				s.toText = s.key[1];
				s.fromCode = data.citynameMap[s.fromText];
				s.toCode = data.citynameMap[s.toText];

				if (!s.toCode || !s.fromCode)
					return false;
				s.toCode = s.toCode.c;
				s.fromCode = s.fromCode.c;

				return true;
			});
			var loaded = [];

			var loadTrain = function () {
				if (!serverSuggestion.length) {
					checkSuggestion(loaded);
					return;
				}

				var t = serverSuggestion.pop();
				query.queryTicket(t.fromCode, t.toCode, cp.depDate, cp.studentTicket, false, true)
					.done(function () {
						loaded.unshift(t);

						var trainAvailable = this.original;
						if (!trainAvailable) {
							loadTrain();
							return;
						}

						var trainFilter = new RegExp("^(" + _.map(t.value, function (v) {
							return v.trainCode;
						}).join("|") + ")$", "i");

						trainAvailable = _.filter(trainAvailable, function (x) {
							return trainFilter.test(x.code);
						});
						var seatType = cp.selectedSeatType || data.seatOrder;
						//seatType=['O']
						var count = Math.max(!cp.partialSubmitEnabled && cp.passengers ? cp.passengers.length : 0, 1);
						var selectedTrain = _.filter(trainAvailable, function (x) {
							if (x.available !== 1)
								return false;
							return _.some(seatType, function (s) {
								return x.ticketMap[s] && x.ticketMap[s].count >= count;
							});
						});

						if (selectedTrain.length)
							t.train = selectedTrain;
						loadTrain();
					}).fail(loadTrain);
			};

			loadTrain();
		};
		var checkSuggestion = function (suggestData) {
			suggestion = suggestData;

			if (suggestion.length)
				that.fireEvent("trainSuggestion", suggestion);
		};

		this.setQueryResult = function (result, queryCount) {
			if (queryCount < startQueryLimit || isInQuery || suggestion)
				return;

			isInQuery = true;
			queryResult = result;
			trainStops = {};
			that.checkTrainSuggestion();
		}
		this.clearQueryResultCache = function () {
			queryResult = null;
			isInQuery = false;
			trainStops = null;
			alltrains = null;
			suggestion = null;
		};
		this.checkTrainSuggestion = function () {
			alltrains = _.filter(cp.selectedTrain || [], function (code) {
				if (!isFullyQualifiedTrainCode(code))
					return false;
				var t = _.findWhere(queryResult.original, { code: code });
				//始发终到、未起售的车不考虑
				if (!t || (t.from.endpoint && t.to.endpoint) || t.available < 0)
					return false;

				return true;
			});
			if (!alltrains.length)
				return;
			loadTrainStops();
		};

	}

	TSS.prototype = Object.create(EventObject);
	TSS.constructor = TSS;

	var ctx = {
		TSS: new TSS(),
		setQueryResult: function (result, queryCount) {
			ctx.TSS.setQueryResult(result, queryCount);
		},
		clearQueryResultCache: function () {
			ctx.TSS.clearQueryResultCache();
		}
	};
	Object.defineProperty(ctx.TSS, "isInSuggestQuery", {
		get: function () {
			return isInQuery;
		}
	});

	return ctx;
});