<?php
/**
 * Admin settings page: Settings → Font del Bosc Combustible.
 *
 * @package FontdelboscCombustible
 */

declare( strict_types=1 );

defined( 'ABSPATH' ) || exit;

/**
 * Registers the settings screen and the cache-flush action.
 */
final class Fontdelbosc_Combustible_Admin {

	/**
	 * Wires the admin hooks.
	 */
	public static function init(): void {
		add_action( 'admin_menu', array( self::class, 'add_menu' ) );
		add_action( 'admin_init', array( self::class, 'register_settings' ) );
		add_action( 'admin_post_fontdelbosc_combustible_flush_cache', array( self::class, 'handle_flush' ) );
	}

	/**
	 * Adds the options page under Settings.
	 */
	public static function add_menu(): void {
		add_options_page(
			__( 'Font del Bosc Combustible', 'fontdelbosc-combustible' ),
			__( 'Font del Bosc Combustible', 'fontdelbosc-combustible' ),
			'manage_options',
			'fontdelbosc-combustible',
			array( self::class, 'render_page' )
		);
	}

	/**
	 * Registers the single options row.
	 */
	public static function register_settings(): void {
		register_setting(
			'fontdelbosc_combustible',
			Fontdelbosc_Combustible_Data_Manager::OPTIONS_OPTION,
			array(
				'type'              => 'array',
				'sanitize_callback' => array( self::class, 'sanitize' ),
				'default'           => Fontdelbosc_Combustible_Data_Manager::defaults(),
				'show_in_rest'      => false,
			)
		);
	}

	/**
	 * Sanitizes the settings form.
	 *
	 * @param mixed $input Raw input.
	 * @return array<string,mixed>
	 */
	public static function sanitize( mixed $input ): array {
		$input = is_array( $input ) ? $input : array();

		$fuels = array();

		foreach ( Fontdelbosc_Combustible_Payload::arr( Fontdelbosc_Combustible_Payload::get( $input, 'fuel_types' ) ) as $id ) {
			$id = Fontdelbosc_Combustible_Payload::int( $id );

			if ( null !== $id && $id > 0 ) {
				$fuels[] = $id;
			}
		}

		return array(
			'search_radius_km'         => max( 5, min( 50, Fontdelbosc_Combustible_Payload::int( Fontdelbosc_Combustible_Payload::get( $input, 'search_radius_km' ) ) ?? 15 ) ),
			'max_stations'             => max( 5, min( 20, Fontdelbosc_Combustible_Payload::int( Fontdelbosc_Combustible_Payload::get( $input, 'max_stations' ) ) ?? 10 ) ),
			'fuel_types'               => array() === $fuels ? Fontdelbosc_Combustible_Fuels::DEFAULT_IDS : array_values( array_unique( $fuels ) ),
			'show_only_public'         => ! empty( Fontdelbosc_Combustible_Payload::get( $input, 'show_only_public' ) ),
			'cache_ttl'                => max( 600, min( 86400, Fontdelbosc_Combustible_Payload::int( Fontdelbosc_Combustible_Payload::get( $input, 'cache_ttl' ) ) ?? 3600 ) ),
			'show_distance'            => ! empty( Fontdelbosc_Combustible_Payload::get( $input, 'show_distance' ) ),
			'show_schedule'            => ! empty( Fontdelbosc_Combustible_Payload::get( $input, 'show_schedule' ) ),
			'sort_by'                  => ( Fontdelbosc_Combustible_Payload::str( Fontdelbosc_Combustible_Payload::get( $input, 'sort_by' ) ) === 'price_asc' ) ? 'price_asc' : 'distance',
			'delete_data_on_uninstall' => ! empty( Fontdelbosc_Combustible_Payload::get( $input, 'delete_data_on_uninstall' ) ),
		);
	}

	/**
	 * Renders the settings page.
	 */
	public static function render_page(): void {
		if ( ! current_user_can( 'manage_options' ) ) {
			return;
		}

		require FONTDELBOSC_COMBUSTIBLE_DIR . 'admin/views/settings-page.php';
	}

	/**
	 * Handles the flush-cache button.
	 */
	public static function handle_flush(): void {
		if ( ! current_user_can( 'manage_options' ) ) {
			wp_die( esc_html__( 'Insufficient permissions.', 'fontdelbosc-combustible' ) );
		}

		check_admin_referer( 'fontdelbosc_combustible_flush_cache' );

		Fontdelbosc_Combustible_Data_Manager::flush_cache();
		Fontdelbosc_Combustible_Data_Manager::get_payload( true );

		wp_safe_redirect(
			add_query_arg(
				array(
					'page'                => 'fontdelbosc-combustible',
					'fontdelbosc_flushed' => 1,
				),
				admin_url( 'options-general.php' )
			)
		);
		exit;
	}
}