/* *
 *
 *  (c) 2010-2026 Highsoft AS
 *  Author: Torstein Hønsi
 *
 *  A commercial license may be required depending on use.
 *  See www.highcharts.com/license
 *
 *
 * */
'use strict';
import { addEvent, getMagnitude, normalizeTickInterval } from '../../Shared/Utilities.js';
import { timeUnits } from '../Utilities.js';
/* *
 *
 *  Composition
 *
 * */
var DateTimeAxis;
(function (DateTimeAxis) {
    /* *
     *
     *  Declarations
     *
     * */
    /* *
     *
     *  Functions
     *
     * */
    /**
     * Extends axis class with date and time support.
     * @internal
     */
    function compose(AxisClass) {
        if (!AxisClass.keepProps.includes('dateTime')) {
            AxisClass.keepProps.push('dateTime');
            const axisProto = AxisClass.prototype;
            axisProto.getTimeTicks = getTimeTicks;
            addEvent(AxisClass, 'afterSetType', onAfterSetType);
        }
        return AxisClass;
    }
    DateTimeAxis.compose = compose;
    /**
     * Set the tick positions to a time unit that makes sense, for example
     * on the first of each month or on every Monday. Return an array with
     * the time positions. Used in datetime axes as well as for grouping
     * data on a datetime axis.
     *
     * @internal
     * @function Highcharts.Axis#getTimeTicks
     */
    function getTimeTicks() {
        return this.chart.time.getTimeTicks.apply(this.chart.time, arguments);
    }
    /** @internal */
    function onAfterSetType() {
        if (this.type !== 'datetime') {
            this.dateTime = void 0;
            return;
        }
        if (!this.dateTime) {
            this.dateTime = new Additions(this);
        }
    }
    /* *
     *
     *  Classes
     *
     * */
    /** @internal */
    class Additions {
        /* *
         *
         *  Constructors
         *
         * */
        constructor(axis) {
            this.axis = axis;
        }
        /* *
         *
         *  Functions
         *
         * */
        /**
         * Get a normalized tick interval for dates. Returns a configuration
         * object with unit range (interval), count and name. Used to prepare
         * data for `getTimeTicks`. Previously this logic was part of
         * getTimeTicks, but as `getTimeTicks` now runs of segments in stock
         * charts, the normalizing logic was extracted in order to prevent it
         * for running over again for each segment having the same interval.
         * #662, #697.
         * @internal
         */
        normalizeTimeTickInterval(tickInterval, unitsOption) {
            const units = (unitsOption || [[
                    // Unit name
                    'millisecond',
                    // Allowed multiples
                    [1, 2, 5, 10, 20, 25, 50, 100, 200, 500]
                ], [
                    'second',
                    [1, 2, 5, 10, 15, 30]
                ], [
                    'minute',
                    [1, 2, 5, 10, 15, 30]
                ], [
                    'hour',
                    [1, 2, 3, 4, 6, 8, 12]
                ], [
                    'day',
                    [1, 2]
                ], [
                    'week',
                    [1, 2]
                ], [
                    'month',
                    [1, 2, 3, 4, 6]
                ], [
                    'year',
                    null
                ]]);
            let unit = units[units.length - 1], // Default unit is years
            interval = timeUnits[unit[0]], multiples = unit[1], i, match;
            // Loop through the units to find the one that best fits the
            // tickInterval
            for (i = 0; i < units.length; i++) {
                unit = units[i];
                interval = timeUnits[unit[0]];
                multiples = unit[1];
                if (units[i + 1]) {
                    // `lessThan` is in the middle between the highest multiple
                    // and the next unit.
                    const lessThan = (interval *
                        multiples[multiples.length - 1] +
                        timeUnits[units[i + 1][0]]) / 2;
                    // Break and keep the current unit
                    if (tickInterval <= lessThan) {
                        match = lessThan / tickInterval;
                        break;
                    }
                }
            }
            // Prevent 2.5 years intervals, though 25, 250 etc. are allowed
            if (interval === timeUnits.year && tickInterval < 5 * interval) {
                multiples = [1, 2, 5];
            }
            // Get the count
            const count = normalizeTickInterval(tickInterval / interval, multiples, unit[0] === 'year' ? // #1913, #2360
                Math.max(getMagnitude(tickInterval / interval), 1) :
                1);
            return {
                unitRange: interval,
                count: count,
                unitName: unit[0],
                match
            };
        }
        /**
         * Get the best date format for a specific X value based on the closest
         * point range on the axis.
         *
         * @internal
         */
        getXDateFormat(x, dateTimeLabelFormats) {
            const { axis } = this, time = axis.chart.time;
            return axis.closestPointRange ?
                time.getDateFormat(axis.closestPointRange, x, axis.options.startOfWeek, dateTimeLabelFormats) ||
                    // #2546, 2581
                    time.resolveDTLFormat(dateTimeLabelFormats.year).main :
                time.resolveDTLFormat(dateTimeLabelFormats.day).main;
        }
    }
    DateTimeAxis.Additions = Additions;
})(DateTimeAxis || (DateTimeAxis = {}));
/* *
 *
 *  Default Export
 *
 * */
export default DateTimeAxis;
