"use strict";
/*
 * This file contains modifications to code from https://github.com/mhalshehri/hijri-converter
 * that is licensed under the MIT license.
 *
 * Copyright (c) 2018 Mohammed H Alshehri (@mhalshehri) and contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the 'Software'), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software.
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * This modified version of the Software is also licensed under the MIT license,
 * and is subject to the same conditions as the original version of the Software.
 *
 * Copyright (c) 2023 Tabby FZ-LLC
 *
 * A copy of the license can be found in the LICENSE file at the root of this
 * distribution.
 */
Object.defineProperty(exports, "__esModule", { value: true });
exports.gregorianFromOrdinal = exports.gregorianToJulian = exports.hijriToJulian = exports.hijriDaysInMonth = void 0;
const ummalqura_1 = require("./ummalqura");
const julianDayHelpers_1 = require("./julianDayHelpers");
const dateHelpers_1 = require("./dateHelpers");
/**
 * Return month’s index in ummalqura month starts
 */
function _monthIndex(year, month) {
    const priorMonth = (year - 1) * 12 + month - 1;
    const index = priorMonth - ummalqura_1.HIJRI_OFFSET;
    return index;
}
/**
 * Return number of days in month.
 */
function hijriDaysInMonth(year, month) {
    const index = _monthIndex(year, month);
    return ummalqura_1.MONTH_STARTS[index + 1] - ummalqura_1.MONTH_STARTS[index];
}
exports.hijriDaysInMonth = hijriDaysInMonth;
/**
 * Return corresponding Julian day number (JDN) from Hijri date.
 */
function hijriToJulian(date) {
    const index = _monthIndex(date.year, date.month);
    const rjd = ummalqura_1.MONTH_STARTS[index] + date.day - 1;
    const jdn = (0, julianDayHelpers_1.rjdToJdn)(rjd);
    return jdn;
}
exports.hijriToJulian = hijriToJulian;
/**
 * Return corresponding Julian day number (JDN) from Gregorian date.
 */
function gregorianToJulian(date) {
    const y = date.year - 1;
    const m = date.month;
    const daysBeforeYear = y * 365 + Math.floor(y / 4) - Math.floor(y / 100) + Math.floor(y / 400);
    const daysBeforeMonth = dateHelpers_1.DAYS_BEFORE_MONTH[m] + Number(m > 2 && (0, dateHelpers_1.isLeap)(date.year));
    const don = daysBeforeYear + daysBeforeMonth + date.day;
    const jdn = (0, julianDayHelpers_1.ordinalToJdn)(don);
    return jdn;
}
exports.gregorianToJulian = gregorianToJulian;
/**
 * Construct a date from a proleptic Gregorian ordinal.
 *  January 1 of year 1 is day 1. Only the year, month and day are
 *  non-zero in the result.
 */
function gregorianFromOrdinal(n) {
    const [year, month, day] = (0, dateHelpers_1.ord2ymd)(n);
    return { year, month, day };
}
exports.gregorianFromOrdinal = gregorianFromOrdinal;