// Mahdi Hasheminezhad. email: hasheminezhad at gmail dot com (http://hasheminezhad.com)
jQuery(function($){
	$.datepicker.regional['ar'] = {
        calendar: HijriDate,
		closeText: 'إغلاق',
		prevText: 'السابق',
		nextText: 'التالی',
		currentText: 'الیوم',
		monthNames: ['محرّم', 'صفر', 'ربیع الأول', 'ربیع الثانی', 'جمادى الأولى', 'جمادى الآخرة', 'رجب', 'شعبان', 'رمضان', 'شوال', 'ذو القعدة', 'ذو الحجة'],
		monthNamesShort: ['محرّم', 'صفر', 'ربیع الأول', 'ربیع الثانی', 'جمادى الأولى', 'جمادى الآخرة', 'رجب', 'شعبان', 'رمضان', 'شوال', 'ذو القعدة', 'ذو الحجة'],
		dayNames: ['الأحد', 'الاثنین', 'الثلاثاء', 'الأربعاء', 'الخمیس', 'الجمعة', 'السبت'],
		dayNamesShort: ['أحد', 'اثنین', 'ثلاثاء', 'أربعاء', 'خمیس', 'جمعة', 'سبت'],
		dayNamesMin: ['أ', 'ا', 'ث', 'أ', 'خ', 'ج', 'س'],
		weekHeader: 'س',
		dateFormat: 'yy/mm/dd',
		firstDay: 6,
		isRTL: true,
		showMonthAfterYear: false,
		yearSuffix: '',
		calculateWeek: function(date) {
			var checkDate = new HijriDate(date.getFullYear(), date.getMonth(), date.getDate() + (date.getDay() || 7) - 3);
			return Math.floor(Math.round((checkDate.getTime() - new HijriDate(checkDate.getFullYear(), 0, 1).getTime()) / 86400000) / 7) + 1;
		}};
	$.datepicker.setDefaults($.datepicker.regional['ar']);
});

function HijriDate(p0, p1, p2) {
    var gregorianDate;
    var hijriDate;

	if (!isNaN(parseInt(p0)) && !isNaN(parseInt(p1)) && !isNaN(parseInt(p2))) {
        var g = hijri_to_gregorian([parseInt(p0, 10), parseInt(p1, 10), parseInt(p2, 10)]);
        setFullDate(new Date(g[0], g[1], g[2]));
    } else {
        setFullDate(p0);
    }

    function hijri_to_gregorian(d) {
        var gregorian = jd_to_gregorian(islamic_to_jd(d[0], d[1] + 1, d[2]));
        gregorian[1]--;
        return gregorian;
    }

    function gregorian_to_hijri(d) {
        var hijri = jd_to_islamic(gregorian_to_jd(d[0], d[1] + 1, d[2]));
        hijri[1]--;
        return hijri;
    }

    function setFullDate(date) {
        if (date && date.getGregorianDate) date = date.getGregorianDate();
        gregorianDate = new Date(date);
		gregorianDate.setHours(gregorianDate.getHours() > 12 ? gregorianDate.getHours() + 2 : 0)
        if (!gregorianDate || gregorianDate == 'Invalid Date' || isNaN(gregorianDate || !gregorianDate.getDate())) {
            gregorianDate = new Date();
        }
        hijriDate = gregorian_to_hijri([
            gregorianDate.getFullYear(),
            gregorianDate.getMonth(),
            gregorianDate.getDate()]);
        return this;
    }

    this.getGregorianDate = function() { return gregorianDate; }

    this.setFullDate = setFullDate;

	this.setMonth = function(e) {
		hijriDate[1] = e;
        var g = hijri_to_gregorian(hijriDate);
        gregorianDate = new Date(g[0], g[1], g[2]);
        hijriDate = gregorian_to_hijri([g[0], g[1], g[2]]);
	}

    this.setDate = function(e) {
        hijriDate[2] = e;
        var g = hijri_to_gregorian(hijriDate);
        gregorianDate = new Date(g[0], g[1], g[2]);
        hijriDate = gregorian_to_hijri([g[0], g[1], g[2]]);
    };

    this.getFullYear = function() { return hijriDate[0]; };
    this.getMonth = function() { return hijriDate[1]; };
    this.getDate = function() { return hijriDate[2]; };
    this.toString = function() { return hijriDate.join(',').toString(); };
    this.getDay = function() { return gregorianDate.getDay(); };
    this.getHours = function() { return gregorianDate.getHours(); };
    this.getMinutes = function() { return gregorianDate.getMinutes(); };
    this.getSeconds = function() { return gregorianDate.getSeconds(); };
    this.getTime = function() { return gregorianDate.getTime(); };
    this.getTimeZoneOffset = function() { return gregorianDate.getTimeZoneOffset(); };
    this.getYear = function() { return hijriDate[0] % 100; };

    this.setHours = function(e) { gregorianDate.setHours(e) };
    this.setMinutes = function(e) { gregorianDate.setMinutes(e) };
    this.setSeconds = function(e) { gregorianDate.setSeconds(e) };
    this.setMilliseconds = function(e) { gregorianDate.setMilliseconds(e) };
}