<?php

namespace TablePress\PhpOffice\PhpSpreadsheet\Style\NumberFormat\Wizard;

class Date extends DateTimeWizard
{
	/**
	 * Year (4 digits), e.g. 2023.
	 */
	public const YEAR_FULL = 'yyyy';

	/**
	 * Year (last 2 digits), e.g. 23.
	 */
	public const YEAR_SHORT = 'yy';

	public const MONTH_FIRST_LETTER = 'mmmmm';
	/**
	 * Month name, long form, e.g. January.
	 */
	public const MONTH_NAME_FULL = 'mmmm';
	/**
	 * Month name, short form, e.g. Jan.
	 */
	public const MONTH_NAME_SHORT = 'mmm';
	/**
	 * Month number with a leading zero if required, e.g. 01.
	 */
	public const MONTH_NUMBER_LONG = 'mm';

	/**
	 * Month number without a leading zero, e.g. 1.
	 */
	public const MONTH_NUMBER_SHORT = 'm';

	/**
	 * Day of the week, full form, e.g. Tuesday.
	 */
	public const WEEKDAY_NAME_LONG = 'dddd';

	/**
	 * Day of the week, short form, e.g. Tue.
	 */
	public const WEEKDAY_NAME_SHORT = 'ddd';

	/**
	 * Day number with a leading zero, e.g. 03.
	 */
	public const DAY_NUMBER_LONG = 'dd';

	/**
	 * Day number without a leading zero, e.g. 3.
	 */
	public const DAY_NUMBER_SHORT = 'd';

	protected const DATE_BLOCKS = [
		self::YEAR_FULL,
		self::YEAR_SHORT,
		self::MONTH_FIRST_LETTER,
		self::MONTH_NAME_FULL,
		self::MONTH_NAME_SHORT,
		self::MONTH_NUMBER_LONG,
		self::MONTH_NUMBER_SHORT,
		self::WEEKDAY_NAME_LONG,
		self::WEEKDAY_NAME_SHORT,
		self::DAY_NUMBER_LONG,
		self::DAY_NUMBER_SHORT,
	];

	public const SEPARATOR_DASH = '-';
	public const SEPARATOR_DOT = '.';
	public const SEPARATOR_SLASH = '/';
	public const SEPARATOR_SPACE_NONBREAKING = "\u{a0}";
	public const SEPARATOR_SPACE = ' ';

	protected const DATE_DEFAULT = [
		self::YEAR_FULL,
		self::MONTH_NUMBER_LONG,
		self::DAY_NUMBER_LONG,
	];

	/**
	 * @var array<?string>
	 */
	protected array $separators;

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

	/**
	 * @param null|array<?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_DASH, ?string ...$formatBlocks)
	{
		$separators ??= self::SEPARATOR_DASH;
		$formatBlocks = (count($formatBlocks) === 0) ? self::DATE_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 $value): string
	{
		// Any date masking codes are returned as lower case values
		if (in_array(mb_strtolower($value), self::DATE_BLOCKS, true)) {
			return mb_strtolower($value);
		}

		// Wrap any string literals in quotes, so that they're clearly defined as string literals
		return $this->wrapLiteral($value);
	}

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