; (function (undefined) {
	var _global;
	//工具函数
	//配置合并
	function extend(def, opt, override) {
		for (var k in opt) {
			if (opt.hasOwnProperty(k) && (!def.hasOwnProperty(k) || override)) {
				def[k] = opt[k]
			}
		}
		return def;
	}

	//日期格式化
	function concatDate(y, m, d) {
		var symbol = '-';
		if (m) {
			m = (m.toString())[1] ? m : '0' + m;
		}
		if (d) {
			d = (d.toString())[1] ? d : '0' + d;
		}

		return y + (m ? symbol + m : '') + (d ? symbol + d : '');
	}
	//得到时间戳
	function getTimeStamp(d) {

		var date = new Date(d);

		if (isNaN(date.getTime())) {
			console.error(d + ' is invalid date');
			return '';
		}

		return date.getTime();
	}

	//polyfill
	if (!Array.isArray) {
		Array.isArray = function (arg) {
			return Object.prototype.toString.call(arg) === '[object Array]';
		};
	}
	//过滤非日期，格式化日期
	function filterDate(arr) {
		
		if(!Array.isArray(arr)) {
			return [];
		}

		arr = arr || [];
		var dateArr = [];

		for (var i = 0; i < arr.length; i++) {

			var item = arr[i];
			var date = new Date(item);

			if (isNaN(date.getTime())) {
				console.error(item + ' is invalid date')
			} else {
				var y = date.getFullYear();
				var m = date.getMonth();
				var d = date.getDate();
				var dateStr = concatDate(y, m + 1, d);
				dateArr.push(dateStr);
			}
		}

		return dateArr;
	}
	

	function Schedule(opt) {
		var def = {},
			opt = extend(def, opt, true),
			curDate = opt.date ? new Date(opt.date) : new Date(),
			disabledDate = opt.disabledDate ? filterDate(opt.disabledDate) : [],
			selectedDate = opt.selectedDate ? filterDate(opt.selectedDate) : [],
			disabledBefore = opt.disabledBefore ? getTimeStamp(opt.disabledBefore) : '',
			disabledAfter = opt.disabledAfter ? getTimeStamp(opt.disabledAfter) : '',
			showToday = opt.showToday,
			year = curDate.getFullYear(),
			month = curDate.getMonth(),
			currentYear = curDate.getFullYear(),
			currentMonth = curDate.getMonth(),
			currentDay = curDate.getDate(),
			activeDate = '',
			el = document.querySelector(opt.el) || document.querySelector('body'),
			_this = this;
		var bindEvent = function () {

			el.addEventListener('click', function (e) {
				switch (e.target.id) {
					case 'nextMonth':
						_this.nextMonthFun();
						break;
					case 'nextYear':
						_this.nextYearFun();
						break;
					case 'prevMonth':
						_this.prevMonthFun();
						break;
					case 'prevYear':
						_this.prevYearFun();
						break;
					case 'todayBtn':
						_this.renderToday();
						break;
					default:
						break;
				};
				//if (e.target.className.indexOf('currentDate') > -1) {
				//	activeDate = e.target.title;
				//	opt.clickCb && opt.clickCb(activeDate);
				//	render();
				//}
			}, false)
		}
		var init = function () {
			var scheduleHd = '<div class="schedule-hd">' +
				'<div>' +
				'<span class="iconfont icon-jiantou_yemian_xiangzuo" id="prevYear" ></span>' +
				'<span class="iconfont icon-jiantou_liebiaoxiangzuo" id="prevMonth"></span>' +
				'</div>' +
				'<div class="today"></div>' +
				'<div>' +
				'<span class="iconfont icon-jiantou_liebiaoxiangyou" id="nextMonth"></span>' +
				'<span class="iconfont icon-jiantou_yemian_xiangyou" id="nextYear"></span>' +
				'</div>' +
				'</div>'
			var scheduleWeek = '<ul class="week-ul ul-box clearfix">' +
				'<li>日</li>' +
				'<li>一</li>' +
				'<li>二</li>' +
				'<li>三</li>' +
				'<li>四</li>' +
				'<li>五</li>' +
				'<li>六</li>' +
				'</ul>'
			var scheduleBd = '<ul class="schedule-bd ul-box clearfix" ></ul>';
			var todayBtn = '<div id="todayBtn" class="today">今天</div>'
			el.innerHTML = scheduleHd + scheduleWeek + scheduleBd + (showToday ? todayBtn : '');
			bindEvent();
			render();
		}
		var render = function () {
			var fullDay = new Date(year, month + 1, 0).getDate(), //当月总天数
				startWeek = new Date(year, month, 1).getDay(), //当月第一天是周几
				total = (fullDay + startWeek) % 7 == 0 ? (fullDay + startWeek) : fullDay + startWeek + (7 - (fullDay + startWeek) % 7),//元素总个数
				lastMonthDay = new Date(year, month, 0).getDate(), //上月最后一天
				eleTemp = [];
			for (var i = 0; i < total; i++) {

				var nowDate = concatDate(year, month + 1, (i + 1 - startWeek));
				var nowTimestamp = new Date(nowDate).getTime();
				var isDisbale = disabledDate.indexOf(nowDate) > -1;
				var isSelected = selectedDate.indexOf(nowDate) > -1;

				if (i < startWeek) {

					eleTemp.push('<li class="other-month"><span class="dayStyle">' + (lastMonthDay - startWeek + 1 + i) + '</span></li>')
				} else if (i < (startWeek + fullDay)) {

					var addClass = '';
					if (isDisbale) {
				 	addClass = 'disabled'
					 } else {
					 	isSelected && (addClass = 'selected-style');
					 	activeDate == nowDate && (addClass = 'active-style');
				 	concatDate(currentYear, currentMonth + 1, currentDay) == nowDate && (addClass = 'today-flag');
					}

					if (disabledBefore && nowTimestamp < disabledBefore) {
						addClass = 'disabled'
					}
					if (disabledAfter && nowTimestamp > disabledAfter) {
						addClass = 'disabled'
					}

					eleTemp.push('<li class="current-month" ><span title=' + nowDate + ' class="currentDate dayStyle ' + addClass + '">' + (i + 1 - startWeek) + '</span></li>')
				} else {

					eleTemp.push('<li class="other-month"><span class="dayStyle">' + (i + 1 - (startWeek + fullDay)) + '</span></li>')
				}
			}
			el.querySelector('.schedule-bd').innerHTML = eleTemp.join('');
			el.querySelector('.today').innerHTML = concatDate(year, month + 1);
		};
		this.nextMonthFun = function () {
			if (month + 1 > 11) {
				year += 1;
				month = 0;
			} else {
				month += 1;
			}
			render();
			opt.nextMonthCb && opt.nextMonthCb(year, month + 1);
		};
		this.nextYearFun = function () {
			year += 1;
			render();
			opt.nextYeayCb && opt.nextYeayCb(year, month + 1);
		};
		this.prevMonthFun = function () {
			if (month - 1 < 0) {
				year -= 1;
				month = 11;
			} else {
				month -= 1;
			}
			render();
			opt.prevMonthCb && opt.prevMonthCb(year, month + 1);
		};
		this.prevYearFun = function () {
			year -= 1;
			render();
			opt.prevYearCb && opt.prevYearCb(year, month + 1);
		}
		this.renderToday = function () {
			if (year === currentYear && month === currentMonth) {
				return;
			}

			year = currentYear;
			month = currentMonth;
			render();
		}
		init();
	}
	//将插件暴露给全局对象
	_global = (function () { return this || (0, eval)('this') }());
	if (typeof module !== 'undefined' && module.exports) {
		module.exports = Schedule;
	} else if (typeof define === "function" && define.amd) {
		define(function () {
			return Schedule;
		})
	} else {
		!('Schedule' in _global) && (_global.Schedule = Schedule);
	}

}());