<?php
/**
 * Locale class.
 *
 * Locale-related functionality.
 *
 * @link      https://github.com/googleforcreators/web-stories-wp
 *
 * @copyright 2020 Google LLC
 * @license   https://www.apache.org/licenses/LICENSE-2.0 Apache License 2.0
 */

/**
 * Copyright 2020 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

declare(strict_types = 1);

namespace Google\Web_Stories;

use DateTime;
use DateTimeZone;

/**
 * Locale class.
 */
class Locale {
	/**
	 * Returns locale settings for use on the client side.
	 *
	 * @since 1.1.0
	 *
	 * @return array<string,mixed> Locale settings.
	 */
	public function get_locale_settings(): array {
		global $wp_locale;

		/* translators: Date format, see https://www.php.net/manual/en/datetime.format.php */
		$default_date_format = __( 'd/m/Y', 'web-stories' );

		/* translators: Date format, see https://www.php.net/manual/en/datetime.format.php */
		$default_time_format = __( 'g:i a', 'web-stories' );

		/**
		 * Date format value.
		 *
		 * @var string $date_format
		 */
		$date_format = get_option( 'date_format', $default_date_format );
		if ( empty( trim( $date_format ) ) ) {
			$date_format = $default_date_format;
		}

		/**
		 * Time format value.
		 *
		 * @var string $time_format
		 */
		$time_format = get_option( 'time_format', $default_time_format );
		if ( empty( trim( $time_format ) ) ) {
			$time_format = $default_time_format;
		}

		/**
		 * Time zone string.
		 *
		 * @var string $timezone_string
		 */
		$timezone_string = get_option( 'timezone_string', 'UTC' );
		$timezone_abbr   = '';

		if ( ! empty( $timezone_string ) ) {
			$timezone_date = new DateTime( 'now', new DateTimeZone( $timezone_string ) );
			$timezone_abbr = $timezone_date->format( 'T' );
		}

		/**
		 * Start of week value.
		 *
		 * @var int|string $start_of_week
		 */
		$start_of_week = get_option( 'start_of_week', 0 );

		/**
		 * GMT Offset.
		 *
		 * @var int $gmt_offset
		 */
		$gmt_offset = get_option( 'gmt_offset', 0 );

		return [
			'locale'           => str_replace( '_', '-', get_user_locale() ),
			'dateFormat'       => $date_format,
			'timeFormat'       => $time_format,
			'gmtOffset'        => (float) $gmt_offset,
			'timezone'         => $timezone_string,
			'timezoneAbbr'     => $timezone_abbr,
			'months'           => array_values( $wp_locale->month ),
			'monthsShort'      => array_values( $wp_locale->month_abbrev ),
			'weekdays'         => array_values( $wp_locale->weekday ),
			'weekdaysShort'    => array_values( $wp_locale->weekday_abbrev ),
			'weekdaysInitials' => array_values( $wp_locale->weekday_initial ),
			'weekStartsOn'     => (int) $start_of_week,
		];
	}
}