//$("#show_day").click(function () {
//    var val = $("#datepicker").val();
//    location.href = "/lich-am/ngay?date=" + val;
//})
   
        //$("#show_day").click(function () {
        //    var val = $("#datepicker").val(); console.log("sdsd", val);
        //    location.href = "/Calendar/Date?date=" + val;
        //})

function getRandomInt(max) {
    return Math.floor(Math.random() * Math.floor(max));
}

var index = getRandomInt(10)

if (typeof (index) !== "undefined") {
    $('.page').css({ "background": "url(/themes/default/images/calendar/bg" + index + ".jpg)", "background-position": "center", "background-repeat": "no-repeat", "background-size": "cover", "background-attachment": "fixed" });
}
var now = new Date();
//set ngày dương
var selectSolarDay = document.getElementById("ngayduonglich");
var i;
for (i = 1; i <= 31; i++) {
    selectSolarDay.options[selectSolarDay.options.length] = new Option(i, i);
}
// set tháng dương
var selectSolarMonth = document.getElementById("thangduonglich");
var i;
for (i = 1; i <= 12; i++) {
    selectSolarMonth.options[selectSolarMonth.options.length] = new Option(i, i);
}
//set ngày âm
var selectLunarDay1 = document.getElementById("ngayamlich");
var i;
for (i = 1; i <= 31; i++) {
    selectLunarDay1.options[selectLunarDay1.options.length] = new Option(i, i);
}
// set tháng âm
var selectLunarMonth = document.getElementById("thangamlich");
var i;
for (i = 1; i <= 12; i++) {
    selectLunarMonth.options[selectLunarMonth.options.length] = new Option(i, i);
}
var solarDay = now.getDate()
var solarMonth = now.getMonth() + 1
var solarYear = now.getFullYear();
$("#ngayduonglich").val(solarDay);
$("#thangduonglich").val(solarMonth);
$("#solarYear").val(solarYear);
//$('#ngayduonglich').change(function () {

//    var day = $("#ngayduonglich").val();
//    var month = $("#thangduonglich").val();
//    var year = $("#solarYear").val();

//    var d = new Date();
//    var jd = jdFromDate(day, month, year);
//    var s = jdToDate(jd);
//    var TZ = d.getUTCHours();
//    var l = convertSolar2Lunar(s[0], s[1], s[2], TZ);
//    $("#ngayamlich").val(l[0]);
//    $("#thangamlich").val(l[1]);
//    $("#lunarYear").val(l[2]);
//    var da = year + "-" + month + "-" + day
//    alert(da);
//});
//set click show dương lich
//$("#viewSolar").click(function () {
//    var solarDate = $("#solarYear").val() + "-" + selectSolarMonth.options[selectSolarMonth.selectedIndex].value + "-" + selectSolarDay.options[selectSolarDay.selectedIndex].value;
//    //var solarDate = solarYear + "-" + solarMonth + "-" + solarDay;
//    var val = $("#datepicker").val(); console.log("sdsd", val);
//    location.href = "/Calendar/Date?date=" + solarDate;
//})

function jdFromDate(dd, mm, yy) {
    var a, y, m, jd;
    a = INT((14 - mm) / 12);
    y = yy + 4800 - a;
    m = mm + 12 * a - 3;
    jd = dd + INT((153 * m + 2) / 5) + 365 * y + INT(y / 4) - INT(y / 100) + INT(y / 400) - 32045;
    if (jd < 2299161) {
        jd = dd + INT((153 * m + 2) / 5) + 365 * y + INT(y / 4) - 32083;
    }
    return jd;
}
function jdToDate(jd) {
    var a, b, c, d, e, m, day, month, year;
    if (jd > 2299160) { // After 5/10/1582, Gregorian calendar
        a = jd + 32044;
        b = INT((4 * a + 3) / 146097);
        c = a - INT((b * 146097) / 4);
    } else {
        b = 0;
        c = jd + 32082;
    }
    d = INT((4 * c + 3) / 1461);
    e = c - INT((1461 * d) / 4);
    m = INT((5 * e + 2) / 153);
    day = e - INT((153 * m + 2) / 5) + 1;
    month = m + 3 - 12 * INT(m / 10);
    year = b * 100 + d - 4800 + INT(m / 10);
    return new Array(day, month, year);
}
function INT(d) {
    return Math.floor(d);
}
function getNewMoonDay(k, timeZone) {
    var T, T2, T3, dr, Jd1, M, Mpr, F, C1, deltat, JdNew;
    T = k / 1236.85; // Time in Julian centuries from 1900 January 0.5
    T2 = T * T;
    T3 = T2 * T;
    dr = PI / 180;
    Jd1 = 2415020.75933 + 29.53058868 * k + 0.0001178 * T2 - 0.000000155 * T3;
    Jd1 = Jd1 + 0.00033 * Math.sin((166.56 + 132.87 * T - 0.009173 * T2) * dr); // Mean new moon
    M = 359.2242 + 29.10535608 * k - 0.0000333 * T2 - 0.00000347 * T3; // Sun's mean anomaly
    Mpr = 306.0253 + 385.81691806 * k + 0.0107306 * T2 + 0.00001236 * T3; // Moon's mean anomaly
    F = 21.2964 + 390.67050646 * k - 0.0016528 * T2 - 0.00000239 * T3; // Moon's argument of latitude
    C1 = (0.1734 - 0.000393 * T) * Math.sin(M * dr) + 0.0021 * Math.sin(2 * dr * M);
    C1 = C1 - 0.4068 * Math.sin(Mpr * dr) + 0.0161 * Math.sin(dr * 2 * Mpr);
    C1 = C1 - 0.0004 * Math.sin(dr * 3 * Mpr);
    C1 = C1 + 0.0104 * Math.sin(dr * 2 * F) - 0.0051 * Math.sin(dr * (M + Mpr));
    C1 = C1 - 0.0074 * Math.sin(dr * (M - Mpr)) + 0.0004 * Math.sin(dr * (2 * F + M));
    C1 = C1 - 0.0004 * Math.sin(dr * (2 * F - M)) - 0.0006 * Math.sin(dr * (2 * F + Mpr));
    C1 = C1 + 0.0010 * Math.sin(dr * (2 * F - Mpr)) + 0.0005 * Math.sin(dr * (2 * Mpr + M));
    if (T < -11) {
        deltat = 0.001 + 0.000839 * T + 0.0002261 * T2 - 0.00000845 * T3 - 0.000000081 * T * T3;
    } else {
        deltat = -0.000278 + 0.000265 * T + 0.000262 * T2;
    };
    JdNew = Jd1 + C1 - deltat;
    return INT(JdNew + 0.5 + timeZone / 24)
}
var PI = Math.PI;

function getLunarMonth11(yy, timeZone) {
    var k, off, nm, sunLong;
    off = jdFromDate(31, 12, yy) - 2415021;
    k = INT(off / 29.530588853);
    nm = getNewMoonDay(k, timeZone);
    sunLong = getSunLongitude(nm, timeZone); // sun longitude at local midnight
    if (sunLong >= 9) {
        nm = getNewMoonDay(k - 1, timeZone);
    }
    return nm;
}
function getSunLongitude(jdn, timeZone) {
    var T, T2, dr, M, L0, DL, L;
    T = (jdn - 2451545.5 - timeZone / 24) / 36525; // Time in Julian centuries from 2000-01-01 12:00:00 GMT
    T2 = T * T;
    dr = PI / 180; // degree to radian
    M = 357.52910 + 35999.05030 * T - 0.0001559 * T2 - 0.00000048 * T * T2; // mean anomaly, degree
    L0 = 280.46645 + 36000.76983 * T + 0.0003032 * T2; // mean longitude, degree
    DL = (1.914600 - 0.004817 * T - 0.000014 * T2) * Math.sin(dr * M);
    DL = DL + (0.019993 - 0.000101 * T) * Math.sin(dr * 2 * M) + 0.000290 * Math.sin(dr * 3 * M);
    L = L0 + DL; // true longitude, degree
    L = L * dr;
    L = L - PI * 2 * (INT(L / (PI * 2))); // Normalize to (0, 2*PI)
    return INT(L / PI * 6)
}

function getLeapMonthOffset(a11, timeZone) {
    var k, last, arc, i;
    k = INT((a11 - 2415021.076998695) / 29.530588853 + 0.5);
    last = 0;
    i = 1; // We start with the month following lunar month 11
    arc = getSunLongitude(getNewMoonDay(k + i, timeZone), timeZone);
    do {
        last = arc;
        i++;
        arc = getSunLongitude(getNewMoonDay(k + i, timeZone), timeZone);
    } while (arc != last && i < 14);
    return i - 1;
}
function convertSolar2Lunar(dd, mm, yy, timeZone) {
    var k, dayNumber, monthStart, a11, b11, lunarDay, lunarMonth, lunarYear, lunarLeap;
    dayNumber = jdFromDate(dd, mm, yy);
    k = INT((dayNumber - 2415021.076998695) / 29.530588853);
    monthStart = getNewMoonDay(k + 1, timeZone);
    if (monthStart > dayNumber) {
        monthStart = getNewMoonDay(k, timeZone);
    }
    a11 = getLunarMonth11(yy, timeZone);
    b11 = a11;
    if (a11 >= monthStart) {
        lunarYear = yy;
        a11 = getLunarMonth11(yy - 1, timeZone);
    } else {
        lunarYear = yy + 1;
        b11 = getLunarMonth11(yy + 1, timeZone);
    }
    lunarDay = dayNumber - monthStart + 1;
    diff = INT((monthStart - a11) / 29);
    lunarLeap = 0;
    lunarMonth = diff + 11;
    if (b11 - a11 > 365) {
        leapMonthDiff = getLeapMonthOffset(a11, timeZone);
        if (diff >= leapMonthDiff) {
            lunarMonth = diff + 10;
            if (diff == leapMonthDiff) {
                lunarLeap = 1;
            }
        }
    }
    if (lunarMonth > 12) {
        lunarMonth = lunarMonth - 12;
    }
    if (lunarMonth >= 11 && diff < 4) {
        lunarYear -= 1;
    }
    return new Array(lunarDay, lunarMonth, lunarYear, lunarLeap);
}
function convertLunar2Solar(lunarDay, lunarMonth, lunarYear, lunarLeap, timeZone) {

    var k, a11, b11, off, leapOff, leapMonth, monthStart;
    if (lunarMonth < 11) {
        a11 = getLunarMonth11(lunarYear - 1, timeZone);
        b11 = getLunarMonth11(lunarYear, timeZone);
    } else {
        a11 = getLunarMonth11(lunarYear, timeZone);
        b11 = getLunarMonth11(lunarYear + 1, timeZone);
    }
    off = lunarMonth - 11;
    if (off < 0) {
        off += 12;
    }
    if (b11 - a11 > 365) {
        leapOff = getLeapMonthOffset(a11, timeZone);
        leapMonth = leapOff - 2;
        if (leapMonth < 0) {
            leapMonth += 12;
        }
        if (lunarLeap != 0 && lunarMonth != leapMonth) {
            return new Array(0, 0, 0);
        } else if (lunarLeap != 0 || off >= leapOff) {
            off += 1;
        }
    }
    k = INT(0.5 + (a11 - 2415021.076998695) / 29.530588853);
    monthStart = getNewMoonDay(k + off, timeZone);
    return jdToDate(monthStart + lunarDay - 1);
}
//
$('#ngayduonglich').change(function () {

    var day = parseInt($("#ngayduonglich").val());
    var month = parseInt($("#thangduonglich").val());
    var year = parseInt($("#solarYear").val());

    var d = new Date();
    var jd = jdFromDate(day, month, year);
    var s = jdToDate(jd);
    var TZ = d.getUTCHours();
    var l = convertSolar2Lunar(s[0], s[1], s[2], TZ);
    $("#ngayamlich").val(l[0]);
    $("#thangamlich").val(l[1]);
    $("#lunarYear").val(l[2]);


});
$('#thangduonglich').change(function () {

    var day = parseInt($("#ngayduonglich").val());
    var month = parseInt($("#thangduonglich").val());
    var year = parseInt($("#solarYear").val());

    var d = new Date();
    var jd = jdFromDate(day, month, year);
    var s = jdToDate(jd);
    var TZ = d.getUTCHours();
    var l = convertSolar2Lunar(s[0], s[1], s[2], TZ);
    $("#ngayamlich").val(l[0]);
    $("#thangamlich").val(l[1]);
    $("#lunarYear").val(l[2]);

});
$('#solarYear').change(function () {
    if ($("#solarYear").val().length == 4) {
        var day = parseInt($("#ngayduonglich").val());
        var month = parseInt($("#thangduonglich").val());
        var year = parseInt($("#solarYear").val());

        var d = new Date();
        var jd = jdFromDate(day, month, year);
        var s = jdToDate(jd);
        var TZ = d.getUTCHours();
        var l = convertSolar2Lunar(s[0], s[1], s[2], TZ);
        $("#ngayamlich").val(l[0]);
        $("#thangamlich").val(l[1]);
        $("#lunarYear").val(l[2]);
    } else {
        alert("Bạn nhập năm chưa đúng");
    }
});
//
$('#ngayamlich').change(function () {

    var valueSolarday = parseInt($("#ngayamlich").val());
    var valueSolarMonth = parseInt($("#thangamlich").val());
    var valueSolarYear = parseInt($("#lunarYear").val());
    var d = new Date();
    var TZ = d.getUTCHours();
    var coversolar = convertLunar2Solar(valueSolarday, valueSolarMonth, valueSolarYear, lunarLeap, TZ);

    $("#ngayduonglich").val(coversolar[0]);
    $("#thangduonglich").val(coversolar[1]);
    $("#solarYear").val(coversolar[2]);


});
$('#thangamlich').change(function () {

    var valueSolarday = parseInt($("#ngayamlich").val());
    var valueSolarMonth = parseInt($("#thangamlich").val());
    var valueSolarYear = parseInt($("#lunarYear").val());
    var d = new Date();
    var TZ = d.getUTCHours();
    var coversolar = convertLunar2Solar(valueSolarday, valueSolarMonth, valueSolarYear, lunarLeap, TZ);

    $("#ngayduonglich").val(coversolar[0]);
    $("#thangduonglich").val(coversolar[1]);
    $("#solarYear").val(coversolar[2]);

});
$('#lunarYear').change(function () {
    if ($("#solarYear").val().length == 4) {
        var valueSolarday = parseInt($("#ngayamlich").val());
        var valueSolarMonth = parseInt($("#thangamlich").val());
        var valueSolarYear = parseInt($("#lunarYear").val());
        var d = new Date();
        var TZ = d.getUTCHours();
        var coversolar = convertLunar2Solar(valueSolarday, valueSolarMonth, valueSolarYear, lunarLeap, TZ);

        $("#ngayduonglich").val(coversolar[0]);
        $("#thangduonglich").val(coversolar[1]);
        $("#solarYear").val(coversolar[2]);
    } else {
        alert("Bạn nhập năm chưa đúng");
    }
});
//
//set xem ngày âm lịch
var d = new Date();
var jd = jdFromDate(solarDay, solarMonth, solarYear);
var s = jdToDate(jd);
var TZ = d.getUTCHours();
var l = convertSolar2Lunar(s[0], s[1], s[2], TZ);
var lunarLeap = l[3];
$("#ngayamlich").val(l[0]);
$("#thangamlich").val(l[1]);
$("#lunarYear").val(l[2]);
var lunarLeap = l[3];

$("#viewLunar").click(function () {
    var valueSolarday = parseInt($("#ngayamlich").val());
    var valueSolarMonth = parseInt($("#thangamlich").val());
    var valueSolarYear = parseInt($("#lunarYear").val());
    var coversolar = convertLunar2Solar(valueSolarday, valueSolarMonth, valueSolarYear, lunarLeap, TZ);
    if ($("body").hasClass("embed")) {
        var solarDate = coversolar[2] + "-" + coversolar[1] + "-" + coversolar[0] + "?theme=embed";
        console.log("111");
    } else {
        var solarDate = coversolar[2] + "-" + coversolar[1] + "-" + coversolar[0];
        console.log("222");
    }
    
   // location.href = "./?date=" + solarDate;
    location.href = "/lich-am/" + solarDate;
})