define(["../impl/Record", "../impl/calendarFunctions", "./gregorianCalendar", "./islamicCalendar"],
	function (Record, calendarFunctions, gregorian, islamicCalendar) {

    return {

        MONTH_LENGTH:
            //1300-1304
            ["101010101010", "110101010100", "111011001001", "011011010100", "011011101010",
            //1305-1309
            "001101101100", "101010101101", "010101010101", "011010101001", "011110010010",
            //1310-1314
            "101110101001", "010111010100", "101011011010", "010101011100", "110100101101",
            //1315-1319
            "011010010101", "011101001010", "101101010100", "101101101010", "010110101101",
            //1320-1324
            "010010101110", "101001001111", "010100010111", "011010001011", "011010100101",
            //1325-1329
            "101011010101", "001011010110", "100101011011", "010010011101", "101001001101",
            //1330-1334
            "110100100110", "110110010101", "010110101100", "100110110110", "001010111010",
            //1335-1339
            "101001011011", "010100101011", "101010010101", "011011001010", "101011101001",
            //1340-1344
            "001011110100", "100101110110", "001010110110", "100101010110", "101011001010",
            //1345-1349
            "101110100100", "101111010010", "010111011001", "001011011100", "100101101101",
            //1350-1354
            "010101001101", "101010100101", "101101010010", "101110100101", "010110110100",
            //1355-1359
            "100110110110", "010101010111", "001010010111", "010101001011", "011010100011",
            //1360-1364
            "011101010010", "101101100101", "010101101010", "101010101011", "010100101011",
            //1365-1369
            "110010010101", "110101001010", "110110100101", "010111001010", "101011010110",
            //1370-1374
            "100101010111", "010010101011", "100101001011", "101010100101", "101101010010",
            //1375-1379
            "101101101010", "010101110101", "001001110110", "100010110111", "010001011011",
            //1380-1384
            "010101010101", "010110101001", "010110110100", "100111011010", "010011011101",
            //1385-1389
            "001001101110", "100100110110", "101010101010", "110101010100", "110110110010",
            //1390-1394
            "010111010101", "001011011010", "100101011011", "010010101011", "101001010101",
            //1395-1399
            "101101001001", "101101100100", "101101110001", "010110110100", "101010110101",
            //1400-1404
            "101001010101", "110100100101", "111010010010", "111011001001", "011011010100",
            //1405-1409
            "101011101001", "100101101011", "010010101011", "101010010011", "110101001001",
            //1410-1414
            "110110100100", "110110110010", "101010111001", "010010111010", "101001011011",
            //1415-1419
            "010100101011", "101010010101", "101100101010", "101101010101", "010101011100",
            //1420-1424
            "010010111101", "001000111101", "100100011101", "101010010101", "101101001010",
            //1425-1429
            "101101011010", "010101101101", "001010110110", "100100111011", "010010011011",
            //1430-1434
            "011001010101", "011010101001", "011101010100", "101101101010", "010101101100",
            //1435-1439
            "101010101101", "010101010101", "101100101001", "101110010010", "101110101001",
            //1440-1444
            "010111010100", "101011011010", "010101011010", "101010101011", "010110010101",
            //1445-1449
            "011101001001", "011101100100", "101110101010", "010110110101", "001010110110",
            //1450-1454
            "101001010110", "111001001101", "101100100101", "101101010010", "101101101010",
            //1455-1459
            "010110101101", "001010101110", "100100101111", "010010010111", "011001001011",
            //1460-1464
            "011010100101", "011010101100", "101011010110", "010101011101", "010010011101",
            //1465-1469
            "101001001101", "110100010110", "110110010101", "010110101010", "010110110101",
            //1470-1474
            "001011011010", "100101011011", "010010101101", "010110010101", "011011001010",
            //1475-1479
            "011011100100", "101011101010", "010011110101", "001010110110", "100101010110",
            //1480-1484
            "101010101010", "101101010100", "101111010010", "010111011001", "001011101010",
            //1485-1489
            "100101101101", "010010101101", "101010010101", "101101001010", "101110100101",
            //1490-1494
            "010110110010", "100110110101", "010011010110", "101010010111", "010101000111",
            //1495-1499
            "011010010011", "011101001001", "101101010101", "010101101010", "101001101011",
            //1500-1504
            "010100101011", "101010001011", "110101000110", "110110100011", "010111001010",
            //1505-1509
            "101011010110", "010011011011", "001001101011", "100101001011", "101010100101",
            //1510-1514
            "101101010010", "101101101001", "010101110101", "000101110110", "100010110111",
            //1515-1519
            "001001011011", "010100101011", "010101100101", "010110110100", "100111011010",
            //1520-1524
            "010011101101", "000101101101", "100010110110", "101010100110", "110101010010",
            //1525-1529
            "110110101001", "010111010100", "101011011010", "100101011011", "010010101011",
            //1530-1534
            "011001010011", "011100101001", "011101100010", "101110101001", "010110110010",
            //1535-1539
            "101010110101", "010101010101", "101100100101", "110110010010", "111011001001",
            //1540-1544
            "011011010010", "101011101001", "010101101011", "010010101011", "101001010101",
            //1545-1549
            "110100101001", "110101010100", "110110101010", "100110110101", "010010111010",
            //1550-1554
            "101000111011", "010010011011", "101001001101", "101010101010", "101011010101",
            //1555-1559
            "001011011010", "100101011101", "010001011110", "101000101110", "110010011010",
            //1560-1564
            "110101010101", "011010110010", "011010111001", "010010111010", "101001011101",
            //1565-1569
            "010100101101", "101010010101", "101101010010", "101110101000", "101110110100",
            //1570-1574
            "010110111001", "001011011010", "100101011010", "101101001010", "110110100100",
            //1575-1579
            "111011010001", "011011101000", "101101101010", "010101101101", "010100110101",
            //1580-1584
            "011010010101", "110101001010", "110110101000", "110111010100", "011011011010",
            //1585-1589
            "010101011011", "001010011101", "011000101011", "101100010101", "101101001010",
            //1590-1594
            "101110010101", "010110101010", "101010101110", "100100101110", "110010001111",
            //1595-1599
            "010100100111", "011010010101", "011010101010", "101011010110", "010101011101",
            //1600
            "001010011101"
        ],
        
        getDaysDiff: function (date1, date2) {
            // summary:
            //		This function returns the number of days between two different dates.
            var ONE_DAY = 1000 * 60 * 60 * 24;
            var diff = Math.abs(date1.getTime() - date2.getTime());
            return Math.round(diff / ONE_DAY);

        },

        fromGregorian: function ( /* Date */ gdate) {
            // summary:
            //		This function returns the equivalent islamic(umalqura) date value for a give input gregorian date.
            // gdate: Date
            //      Gregorian date which will be converted to islamic date
            // returns:
            //      Islamic(umalqura) date.
            var date = new Date(gdate);
            var gregorianFirstRef = new Date(1882, 10, 12, 0, 0, 0, 0);
            var gregorianLastRef = new Date(2174, 10, 25, 23, 59, 59, 999);
            var daysDiff = this.getDaysDiff(date, gregorianFirstRef);
            if (date - gregorianFirstRef >= 0 && date - gregorianLastRef <= 0) {
                var year = 1300;
                for (var i = 0; i < this.MONTH_LENGTH.length; i++, year++) {
                    for (var j = 0; j < 12; j++) {
                        var numOfDays = parseInt(this.MONTH_LENGTH[i][j], 10) + 29;
                        if (daysDiff <= numOfDays) {
                            this.date = daysDiff + 1;
                            if (this.date > numOfDays) {
                                this.date = 1;
                                j++;
                            }
                            if (j > 11) {
                                j = 0;
                                year++;
                            }
                            this.month = j;
                            this.year = year;
                            this.hours = date.getHours();
                            this.minutes = date.getMinutes();
                            this.seconds = date.getSeconds();
                            this.milliseconds = date.getMilliseconds();
                            this.day = date.getDay();
                            return this;
                        }
                        daysDiff = parseInt(daysDiff, 10) - numOfDays;
                    }
                }
            } else {
                var islamicDate = islamicCalendar.fromGregorian(date);
                this.date = islamicDate.date;
                this.month = islamicDate.month;
                this.year = islamicDate.year;
                this.hours = islamicDate.hours;
                this.minutes = islamicDate.minutes;
                this.seconds = islamicDate.seconds;
                this.milliseconds = islamicDate.milliseconds;
                this.day = islamicDate.day;
            }
            return this;
        },

        toLocalTime: function (date, timeZone) {
            var islamicDate = this.fromGregorian(date);
            var dt = new Date(date);
            var result = new Record();
            result.set("weekday", timeZone === "UTC" ? dt.getUTCDay() : dt.getDay());
            result.set("era", 0);
            result.set("year", islamicDate.year);
            result.set("month", islamicDate.month);
            result.set("day", islamicDate.date);
            calendarFunctions.setTimeFields(dt, timeZone, result);
            return result;
        }
    };
});