/**

* 日期范围工具类

*/

var dateRangeUtil = (function () {

    /***

    * 获得当前时间

    */

    this.getCurrentDate = function () {

        return new Date();

    };

    /***

    * 获得本周起止时间

    */

    this.getCurrentWeek = function () {

        //起止日期数组

        var startStop = new Array();

        //获取当前时间

        var currentDate = this.getCurrentDate();

        //返回date是一周中的某一天

        var week = currentDate.getDay();

        //返回date是一个月中的某一天

        var month = currentDate.getDate();

        //一天的毫秒数

        var millisecond = 1000 * 60 * 60 * 24;

        //减去的天数

        var minusDay = week != 0 ? week - 1 : 6;

        //alert(minusDay);

        //本周 周一

        var monday = new Date(currentDate.getTime() - (minusDay * millisecond));

        //本周 周日

        var sunday = new Date(monday.getTime() + (6 * millisecond));

        //添加本周时间

        startStop.push(monday.format("yyyy-MM-dd")); //本周起始时间

        //添加本周最后一天时间

        startStop.push(sunday.format("yyyy-MM-dd")); //本周终止时间

        //返回

        return startStop;

    };

    /***

    * 获得本月的起止时间

    */

    this.getCurrentMonth = function () {

        //起止日期数组

        var startStop = new Array();

        //获取当前时间

        var currentDate = this.getCurrentDate();

        //获得当前月份0-11

        var currentMonth = currentDate.getMonth();

        //获得当前年份4位年

        var currentYear = currentDate.getFullYear();

        //求出本月第一天

        var firstDay = new Date(currentYear, currentMonth, 1);

        //当为12月的时候年份需要加1

        //月份需要更新为0 也就是下一年的第一个月

        if (currentMonth == 11) {

            currentYear++;

            currentMonth = 0; //就为

        } else {

            //否则只是月份增加,以便求的下一月的第一天

            currentMonth++;

        }

        //一天的毫秒数

        var millisecond = 1000 * 60 * 60 * 24;

        //下月的第一天

        var nextMonthDayOne = new Date(currentYear, currentMonth, 1);

        //求出上月的最后一天

        var lastDay = new Date(nextMonthDayOne.getTime() - millisecond);

        //添加至数组中返回

        startStop.push(firstDay.format("yyyy-MM-dd"));

        startStop.push(lastDay.format("yyyy-MM-dd"));

        //返回

        return startStop;

    };

    /**

    * 得到本季度开始的月份

    * @param month 需要计算的月份

    ***/

    this.getQuarterSeasonStartMonth = function (month) {

        var quarterMonthStart = 0;

        var spring = 0; //春

        var summer = 3; //夏

        var fall = 6;   //秋

        var winter = 9; //冬

        //月份从0-11

        if (month < 3) {

            return spring;

        }

        if (month < 6) {

            return summer;

        }

        if (month < 9) {

            return fall;

        }

        return winter;

    };

    /**

    * 获得该月的天数

    * @param year年份

    * @param month月份

    * */

    this.getMonthDays = function (year, month) {

        //本月第一天 1-31

        var relativeDate = new Date(year, month, 1);

        //获得当前月份0-11

        var relativeMonth = relativeDate.getMonth();

        //获得当前年份4位年

        var relativeYear = relativeDate.getFullYear();

        //当为12月的时候年份需要加1

        //月份需要更新为0 也就是下一年的第一个月

        if (relativeMonth == 11) {

            relativeYear++;

            relativeMonth = 0;

        } else {

            //否则只是月份增加,以便求的下一月的第一天

            relativeMonth++;

        }

        //一天的毫秒数

        var millisecond = 1000 * 60 * 60 * 24;

        //下月的第一天

        var nextMonthDayOne = new Date(relativeYear, relativeMonth, 1);

        //返回得到上月的最后一天,也就是本月总天数

        return new Date(nextMonthDayOne.getTime() - millisecond).getDate();

    };

    /**

    * 获得本季度的起止日期

    */

    this.getCurrentSeason = function () {

        //起止日期数组

        var startStop = new Array();

        //获取当前时间

        var currentDate = this.getCurrentDate();

        //获得当前月份0-11

        var currentMonth = currentDate.getMonth();

        //获得当前年份4位年

        var currentYear = currentDate.getFullYear();

        //获得本季度开始月份

        var quarterSeasonStartMonth = this.getQuarterSeasonStartMonth(currentMonth);

        //获得本季度结束月份

        var quarterSeasonEndMonth = quarterSeasonStartMonth + 2;

        //获得本季度开始的日期

        var quarterSeasonStartDate = new Date(currentYear, quarterSeasonStartMonth, 1);

        //获得本季度结束的日期

        var quarterSeasonEndDate = new Date(currentYear, quarterSeasonEndMonth, this.getMonthDays(currentYear, quarterSeasonEndMonth));

        //加入数组返回

        startStop.push(quarterSeasonStartDate.format("yyyy-MM-dd"));

        startStop.push(quarterSeasonEndDate.format("yyyy-MM-dd"));

        //返回

        return startStop;

    };

    /***

    * 得到本年的起止日期

    *

    */

    this.getCurrentYear = function () {

        //起止日期数组

        var startStop = new Array();

        //获取当前时间

        var currentDate = this.getCurrentDate();

        //获得当前年份4位年

        var currentYear = currentDate.getFullYear();

        //本年第一天

        var currentYearFirstDate = new Date(currentYear, 0, 1);

        //本年最后一天

        var currentYearLastDate = new Date(currentYear, 11, 31);

        //添加至数组

        startStop.push(currentYearFirstDate.format("yyyy-MM-dd"));

        startStop.push(currentYearLastDate.format("yyyy-MM-dd"));

        //返回

        return startStop;

    };

    /**

    * 返回上一个月的第一天Date类型

    * @param year 年

    * @param month 月

    **/

    this.getPriorMonthFirstDay = function (year, month) {

        //年份为0代表,是本年的第一月,所以不能减

        if (month == 0) {

            month = 11; //月份为上年的最后月份

            year--; //年份减1

            return new Date(year, month, 1);

        }

        //否则,只减去月份

        month--;

        return new Date(year, month, 1); ;

    };

    /**

    * 获得上一月的起止日期

    * ***/

    this.getPreviousMonth = function () {

        //起止日期数组

        var startStop = new Array();

        //获取当前时间

        var currentDate = this.getCurrentDate();

        //获得当前月份0-11

        var currentMonth = currentDate.getMonth();

        //获得当前年份4位年

        var currentYear = currentDate.getFullYear();

        //获得上一个月的第一天

        var priorMonthFirstDay = this.getPriorMonthFirstDay(currentYear, currentMonth);

        //获得上一月的最后一天

        var priorMonthLastDay = new Date(priorMonthFirstDay.getFullYear(), priorMonthFirstDay.getMonth(), this.getMonthDays(priorMonthFirstDay.getFullYear(), priorMonthFirstDay.getMonth()));

        //添加至数组

        startStop.push(priorMonthFirstDay.format("yyyy-MM-dd"));

        startStop.push(priorMonthLastDay.format("yyyy-MM-dd"));

        //返回

        return startStop;

    };

    /**

    * 获得上一周的起止日期

    * **/

    this.getPreviousWeek = function () {

        //起止日期数组

        var startStop = new Array();

        //获取当前时间

        var currentDate = this.getCurrentDate();

        //返回date是一周中的某一天

        var week = currentDate.getDay();

        //返回date是一个月中的某一天

        var month = currentDate.getDate();

        //一天的毫秒数

        var millisecond = 1000 * 60 * 60 * 24;

        //减去的天数

        var minusDay = week != 0 ? week - 1 : 6;

        //获得当前周的第一天

        var currentWeekDayOne = new Date(currentDate.getTime() - (millisecond * minusDay));

        //上周最后一天即本周开始的前一天

        var priorWeekLastDay = new Date(currentWeekDayOne.getTime() - millisecond);

        //上周的第一天

        var priorWeekFirstDay = new Date(priorWeekLastDay.getTime() - (millisecond * 6));

        //添加至数组

        startStop.push(priorWeekFirstDay.format("yyyy-MM-dd"));

        startStop.push(priorWeekLastDay.format("yyyy-MM-dd"));

        return startStop;

    };

    /**

    * 得到上季度的起始日期

    * year 这个年应该是运算后得到的当前本季度的年份

    * month 这个应该是运算后得到的当前季度的开始月份

    * */

    this.getPriorSeasonFirstDay = function (year, month) {

        var quarterMonthStart = 0;

        var spring = 0; //春

        var summer = 3; //夏

        var fall = 6;   //秋

        var winter = 9; //冬

        //月份从0-11

        switch (month) {//季度的其实月份

            case spring:

                //如果是第一季度则应该到去年的冬季

                year--;

                month = winter;

                break;

            case summer:

                month = spring;

                break;

            case fall:

                month = summer;

                break;

            case winter:

                month = fall;

                break;

        };

        return new Date(year, month, 1);

    };

    /**

    * 得到上季度的起止日期

    * **/

    this.getPreviousSeason = function () {

        //起止日期数组

        var startStop = new Array();

        //获取当前时间

        var currentDate = this.getCurrentDate();

        //获得当前月份0-11

        var currentMonth = currentDate.getMonth();

        //获得当前年份4位年

        var currentYear = currentDate.getFullYear();

        //上季度的第一天

        var priorSeasonFirstDay = this.getPriorSeasonFirstDay(currentYear, currentMonth);

        //上季度的最后一天

        var priorSeasonLastDay = new Date(priorSeasonFirstDay.getFullYear(), priorSeasonFirstDay.getMonth() + 2, this.getMonthDays(priorSeasonFirstDay.getFullYear(), priorSeasonFirstDay.getMonth() + 2));

        //添加至数组

        startStop.push(priorSeasonFirstDay.format("yyyy-MM-dd"));

        startStop.push(priorSeasonLastDay.format("yyyy-MM-dd"));

        return startStop;

    };

    /**

    * 得到去年的起止日期

    * **/

    this.getPreviousYear = function () {

        //起止日期数组

        var startStop = new Array();

        //获取当前时间

        var currentDate = this.getCurrentDate();

        //获得当前年份4位年

        var currentYear = currentDate.getFullYear();

        currentYear--;

        var priorYearFirstDay = new Date(currentYear, 0, 1);

        var priorYearLastDay = new Date(currentYear, 11, 1);

        //添加至数组

        startStop.push(priorYearFirstDay.format("yyyy-MM-dd"));

        startStop.push(priorYearLastDay.format("yyyy-MM-dd"));

        return startStop;

    };

    return this;

})();

Date.prototype.format = function(fmt) {

    var o = {

        "M+" : this.getMonth()+1, //月份

        "d+" : this.getDate(), //日

        "h+" : this.getHours(), //小时

        "m+" : this.getMinutes(), //分

        "s+" : this.getSeconds(), //秒

        "q+" : Math.floor((this.getMonth()+3)/3), //季度

        "S" : this.getMilliseconds() //毫秒

    };

    if(/(y+)/.test(fmt)) {

        fmt=fmt.replace(RegExp.$1, (this.getFullYear()+"").substr(4 - RegExp.$1.length));

    }

    for(var k in o) {

        if(new RegExp("("+ k +")").test(fmt)){

            fmt = fmt.replace(RegExp.$1, (RegExp.$1.length==1) ? (o[k]) : (("00"+ o[k]).substr((""+ o[k]).length)));

        }

    }

    return fmt;

}

// 周

if(self.time == 1){

    self.startTime =  dateRangeUtil.getCurrentWeek()[0];

    self.endTime = dateRangeUtil.getCurrentWeek()[1];

}

// 月

if(self.time == 2){

    self.startTime = dateRangeUtil.getCurrentMonth()[0];

    self.endTime = dateRangeUtil.getCurrentMonth()[1];

}

// 季度

if(self.time == 3){

     self.startTime = dateRangeUtil.getCurrentSeason()[0];

     self.endTime = dateRangeUtil.getCurrentSeason()[1];

}

// 年

if(self.time == 4){

      self.startTime = dateRangeUtil.getCurrentYear()[0];

      self.endTime = dateRangeUtil.getCurrentYear()[1];

}

console.log('startTime:'+self.startTime)

console.log('endTime:'+self.endTime)