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<?php
/**
 * The factory the Pay Later messaging configurator configs.
 *
 * @package WooCommerce\PayPalCommerce\PayLaterConfigurator\Endpoint
 */

declare(strict_types=1);

namespace WooCommerce\PayPalCommerce\PayLaterConfigurator\Factory;

use WooCommerce\PayPalCommerce\WcGateway\Settings\Settings;

/**
 * Class ConfigFactory.
 */
class ConfigFactory {
	/**
	 * Returns the configurator config for the given old settings.
	 *
	 * @param Settings $settings The settings.
	 */
	public function from_settings( Settings $settings ): array {
		return array(
			'cart'             => $this->for_location( $settings, 'cart' ),
			'checkout'         => $this->for_location( $settings, 'checkout' ),
			'product'          => $this->for_location( $settings, 'product' ),
			'shop'             => $this->for_location( $settings, 'shop' ),
			'home'             => $this->for_location( $settings, 'home' ),
			'custom_placement' => array( $this->for_location( $settings, 'woocommerceBlock' ) ),
		);
	}

/**
	 * Returns the configurator config for a location.
	 *
	 * @param Settings $settings The settings.
	 * @param string   $location The location name in the old settings.
	 */
	private function for_location( Settings $settings, string $location ): array {
		$selected_locations = $settings->has( 'pay_later_messaging_locations' ) ? $settings->get( 'pay_later_messaging_locations' ) : array();

switch ( $location ) {
			case 'shop':
			case 'home':
				$config = $this->for_shop_or_home( $settings, $location, $selected_locations );
				break;
			case 'woocommerceBlock':
				$config = $this->for_woocommerce_block( $selected_locations );
				break;
			default:
				$config = $this->for_default_location( $settings, $location, $selected_locations );
				break;
		}

return $config;
	}

/**
	 * Returns the configurator config for shop, home locations.
	 *
	 * @param Settings $settings The settings.
	 * @param string   $location The location.
	 * @param string[] $selected_locations The list of selected locations.
	 * @return array{
	 *     layout: string,
	 *     color: string,
	 *     ratio: string,
	 *     status: "disabled"|"enabled",
	 *     placement: string
	 * } The configurator config map.
	 */
	private function for_shop_or_home( Settings $settings, string $location, array $selected_locations ): array {
		return array(
			'layout'    => $this->get_or_default( $settings, "pay_later_{$location}_message_layout", 'flex' ),
			'color'     => $this->get_or_default( $settings, "pay_later_{$location}_message_flex_color", 'black' ),
			'ratio'     => $this->get_or_default( $settings, "pay_later_{$location}_message_flex_ratio", '8x1' ),
			'status'    => in_array( $location, $selected_locations, true ) ? 'enabled' : 'disabled',
			'placement' => $location,
		);
	}

/**
	 * Returns the configurator config for woocommerceBlock location.
	 *
	 * @param array $selected_locations The list of selected locations.
	 * @return array{
	 *     status: "disabled"|"enabled",
	 *     message_reference: string
	 * } The configurator config map.
	 */
	private function for_woocommerce_block( array $selected_locations ): array {
		return array(
			'status'            => in_array( 'custom_placement', $selected_locations, true ) ? 'enabled' : 'disabled',
			'message_reference' => 'woocommerceBlock',
		);
	}

/**
	 * Returns the configurator config for default locations.
	 *
	 * @param Settings $settings The settings.
	 * @param string   $location The location.
	 * @param string[] $selected_locations The list of selected locations.
	 * @return array{
	 *     layout: string,
	 *     logo-position: string,
	 *     logo-type: string,
	 *     text-color: string,
	 *     text-size: string,
	 *     status: "disabled"|"enabled",
	 *     placement: string
	 * } The configurator config map.
	 */
	private function for_default_location( Settings $settings, string $location, array $selected_locations ): array {
		return array(
			'layout'        => $this->get_or_default( $settings, "pay_later_{$location}_message_layout", 'text' ),
			'logo-position' => $this->get_or_default( $settings, "pay_later_{$location}_message_position", 'left' ),
			'logo-type'     => $this->get_or_default( $settings, "pay_later_{$location}_message_logo", 'inline' ),
			'text-color'    => $this->get_or_default( $settings, "pay_later_{$location}_message_color", 'black' ),
			'text-size'     => $this->get_or_default( $settings, "pay_later_{$location}_message_text_size", '12' ),
			'status'        => in_array( $location, $selected_locations, true ) ? 'enabled' : 'disabled',
			'placement'     => $location,
		);
	}

/**
	 * Returns the settings value or default, if does not exist or not allowed value.
	 *
	 * @param Settings   $settings The settings.
	 * @param string     $key The key.
	 * @param mixed      $default The default value.
	 * @param array|null $allowed_values The list of allowed values, or null if all values are allowed.
	 * @return string
	 */
	private function get_or_default( Settings $settings, string $key, $default, ?array $allowed_values = null ): string {
		if ( $settings->has( $key ) ) {
			$value = $settings->get( $key );
			if ( ! $allowed_values || in_array( $value, $allowed_values, true ) ) {
				return $value;
			}
		}
		return $default;
	}
}