<?php
namespace ILJ\Core\Options;

use ILJ\Enumeration\KeywordOrder as KeywordOrderEnum;

/**
 * Option: Order of keywords
 *
 * @package ILJ\Core\Options
 * @since   1.1.3
 */
class KeywordOrder extends AbstractOption {
	
	/**
	 * Get the unique identifier for the option
	 *
	 * @return string
	 */
	public static function getKey() {
		return self::ILJ_OPTIONS_PREFIX . 'keyword_order';
	}
	
	/**
	 * Get the default value of the option
	 *
	 * @return mixed
	 */
	public static function getDefault() {
		return KeywordOrderEnum::FIFO;
	}
	
	/**
	 * Get the frontend label for the option
	 *
	 * @return string
	 */
	public function getTitle() {
		return __('Order for configured keywords while linking', 'internal-links');
	}
	
	/**
	 * Get the frontend description for the option
	 *
	 * @return string
	 */
	public function getDescription() {
		return __('Set the order of how your set keywords get used for building links.', 'internal-links');
	}

	/**
	 * Outputs the options form element for backend administration
	 *
	 * @param  mixed $value
	 * @return mixed
	 */
	public function renderField($value) {
		$key = self::getKey();
		$order_types = KeywordOrderEnum::getValues();
		?>
		<select name="<?php echo esc_attr($key); ?>" id="<?php echo esc_attr($key); ?>">
			<?php foreach ($order_types as $order_type) { ?>
				<option value="<?php echo esc_attr($order_type); ?>" <?php selected($order_type, $value); ?>> <?php echo esc_html(KeywordOrderEnum::translate($order_type)); ?> </option>
			<?php } ?>
		</select>
		<?php
	}

	/**
	 * Checks if a value is a valid value for option
	 *
	 * @param  mixed $value The value that gets validated
	 * @return bool
	 */
	public function isValidValue($value) {
		return in_array($value, KeywordOrderEnum::getValues());
	}
}