<?php

namespace PhpOffice\PhpSpreadsheet\Style\NumberFormat\Wizard;

class Time extends DateTimeWizard
{
    /**
     * Hours without a leading zero, e.g. 9.
     */
    public const HOURS_SHORT = 'h';

    /**
     * Hours with a leading zero, e.g. 09.
     */
    public const HOURS_LONG = 'hh';

    /**
     * Minutes without a leading zero, e.g. 5.
     */
    public const MINUTES_SHORT = 'm';

    /**
     * Minutes with a leading zero, e.g. 05.
     */
    public const MINUTES_LONG = 'mm';

    /**
     * Seconds without a leading zero, e.g. 2.
     */
    public const SECONDS_SHORT = 's';

    /**
     * Seconds with a leading zero, e.g. 02.
     */
    public const SECONDS_LONG = 'ss';

    public const MORNING_AFTERNOON = 'AM/PM';

    protected const TIME_BLOCKS = [
        self::HOURS_LONG,
        self::HOURS_SHORT,
        self::MINUTES_LONG,
        self::MINUTES_SHORT,
        self::SECONDS_LONG,
        self::SECONDS_SHORT,
        self::MORNING_AFTERNOON,
    ];

    public const SEPARATOR_COLON = ':';
    public const SEPARATOR_SPACE_NONBREAKING = "\u{a0}";
    public const SEPARATOR_SPACE = ' ';

    protected const TIME_DEFAULT = [
        self::HOURS_LONG,
        self::MINUTES_LONG,
        self::SECONDS_LONG,
    ];

    /**
     * @var string[]
     */
    protected array $separators;

    /**
     * @var string[]
     */
    protected array $formatBlocks;

    /**
     * @param null|string|string[] $separators
     *        If you want to use the same separator for all format blocks, then it can be passed as a string literal;
     *           if you wish to use different separators, then they should be passed as an array.
     *        If you want to use only a single format block, then pass a null as the separator argument
     */
    public function __construct($separators = self::SEPARATOR_COLON, string ...$formatBlocks)
    {
        $separators ??= self::SEPARATOR_COLON;
        $formatBlocks = (count($formatBlocks) === 0) ? self::TIME_DEFAULT : $formatBlocks;

        $this->separators = $this->padSeparatorArray(
            is_array($separators) ? $separators : [$separators],
            count($formatBlocks) - 1
        );
        $this->formatBlocks = array_map([$this, 'mapFormatBlocks'], $formatBlocks);
    }

    private function mapFormatBlocks(string $value): string
    {
        if (in_array(mb_strtolower($value), self::TIME_BLOCKS, true)) {
            return mb_strtolower($value);
        } elseif (mb_strtoupper($value) === self::MORNING_AFTERNOON) {
            return mb_strtoupper($value);
        }

        return $this->wrapLiteral($value);
    }

    public function format(): string
    {
        return implode('', array_map([$this, 'intersperse'], $this->formatBlocks, $this->separators));
    }
}
