angular.module('push')
  .factory('CalenderHomeService', function () {
    var _monthday = [];//存放日历
    var _months = [];//年份下各月天数
    var monthnum;//当月天数
    var lastMonth; //上一月天数
    var nextMounth;//下一月天数
    return {
      //初始化某年每月多少天
      initMonths: function (_year) {
        for (var i = 1; i <= 12; i++) {
          var date = new Date(_year, i, 1);
          _months.push((new Date(date.getTime() - 1000 * 60 * 60 * 24)).getDate());
        }
      },
      //初始化当月，上月，下月天数
      initLastAndNextMonth: function (_year, _month) {
        monthnum = new Date(parseInt(_year), parseInt(_month), 0).getDate();
        if (parseInt(_month) == 1) {
          lastMonth = new Date(parseInt(_year) - 1, parseInt(12), 0).getDate();
        } else {
          lastMonth = new Date(parseInt(_year), parseInt(_month) - 1, 0).getDate();
        }
        if (parseInt(_month) == 12) {
          nextMounth = new Date(parseInt(_year) + 1, parseInt(1), 0).getDate();
        } else {
          nextMounth = new Date(parseInt(_year), parseInt(_month) + 1, 0).getDate();
        }
      },
      //初始化日历
      initCalendar: function (_year, _month, _day) {
        this.initData();
        this.initMonths(_year);
        this.initLastAndNextMonth(_year, _month);
        var cal = {
          year: _year,
          month: _month,
          day: 0
        };
        //本月第一天是周几
        var firstweek = this.getMonthFirstDayWeek(_year, _month, 1);
        firstweek = firstweek == 0 ? 7 : firstweek;
        //上月空余日期填补
        for (j = firstweek - 1; j > 0; j--) {
          var temp1 = angular.copy(cal);
          temp1.month = _month - 1 == 0 ? 12 : _month - 1;
          temp1.year = _month - 1 == 0 ? _year - 1 : _year;
          temp1.day = lastMonth - j + 1;
          var temps = temp1.year + "-";
          if (temp1.month < 10) {
            temps = temps + "0" + temp1.month + "-";
          } else {
            temps = temps + temp1.month + "-";
          }
          if (temp1.day < 10) {
            temps = temps + "0" + temp1.day;
          } else {
            temps = temps + temp1.day;
          }
          temp1.date = temps;
          _monthday.push(temp1);
        }
        //本月日期填补
        for (i = 1; i <= _months[_month - 1]; i++) {
          var weeknum = this.getMonthWeek(_year, _month, i);
          var temp2 = angular.copy(cal);
          temp2.day = i;
          var tempt = temp2.year + "-";
          if (temp2.month < 10) {
            tempt = tempt + "0" + temp2.month + "-";
          } else {
            tempt = tempt + temp2.month + "-";
          }
          if (temp2.day < 10) {
            tempt = tempt + "0" + temp2.day;
          } else {
            tempt = tempt + temp2.day;
          }
          temp2.date = tempt;
          _monthday.push(temp2);
        }
        //本月最后一天是周几
        var lastweek = this.getMonthFirstDayWeek(_year, _month, monthnum);
        //下月空余日期填补
        if (lastweek != 0) {
          for (j = 1; j <= 7 - lastweek; j++) {
            var temp3 = angular.copy(cal);
            temp3.month = _month + 1 == 13 ? 1 : _month + 1;
            temp3.year = _month + 1 == 13 ? _year + 1 : _year;
            temp3.day = j;
            var tempn = temp3.year + "-";
            if (temp3.month < 10) {
              tempn = tempn + "0" + temp3.month + "-";
            } else {
              tempn = tempn + temp3.month + "-";
            }
            if (temp3.day < 10) {
              tempn = tempn + "0" + temp3.day;
            } else {
              tempn = tempn + temp3.day;
            }
            temp3.date = tempn;
            _monthday.push(temp3);
          }
        }
        return _monthday;
      },
      //判断某一天是周几
      getMonthFirstDayWeek: function (year, month, day) {
        var date = new Date(year, month - 1, day);
        return date.getDay();
      },
      //判断某一天是当月的第几周
      getMonthWeek: function (year, month, day) {
        var date = new Date(year, parseInt(month) - 1, day);
        var w = date.getDay();
        w = w == 0 ? 7 : w;
        var d = date.getDate();
        return Math.ceil(
          (d + 6 - w) / 7
        );
      },
      //重置所有数据
      initData: function () {
        _monthday = [];
        _months = [];
        monthnum = 0;
        lastMonth = 0;
        nextMounth = 0;
      }
    }
  });