<?php
defined( 'ABSPATH' ) || exit;

final class EDRAD_Settings {
	public static function defaults() {
		return array(
			'window_minutes'      => 30,
			'retention_days'      => 90,
			'capture_fatal_errors'=> 1,
			'store_error_message' => 0,
			'show_noops'          => 1,
			'visual_intelligence' => 1,
			'visual_mode'         => 'hybrid',
			'interface_theme'     => 'commander_gold',
			'interface_language'  => 'auto',
			'notice_bay'          => 0,
			'sensor_deployment'   => 1,
			'sensor_identity'     => 1,
			'sensor_configuration'=> 1,
			'sensor_drift'        => 1,
			'flood_guard'         => 1,
			'flood_window'        => 300,
			'suppression_patterns'=> "",
			'remove_on_uninstall' => 1,
		);
	}

	public static function all() {
		return wp_parse_args( get_option( 'edrad_settings', array() ), self::defaults() );
	}

	public static function get( $key ) {
		$options = self::all();
		return $options[ $key ] ?? null;
	}

	public static function register() {
		add_action( 'admin_init', array( __CLASS__, 'register_setting' ) );
	}

	public static function register_setting() {
		register_setting( 'edrad_settings_group', 'edrad_settings', array( 'type' => 'array', 'sanitize_callback' => array( __CLASS__, 'sanitize' ), 'default' => self::defaults() ) );
	}

	public static function sanitize( $input ) {
		$input = is_array( $input ) ? $input : array();
		$windows = array( 5, 15, 30, 60, 120 );
		$retention = array( 7, 30, 90, 180, 365 );
		return array(
			'window_minutes'       => in_array( absint( $input['window_minutes'] ?? 30 ), $windows, true ) ? absint( $input['window_minutes'] ) : 30,
			'retention_days'       => in_array( absint( $input['retention_days'] ?? 90 ), $retention, true ) ? absint( $input['retention_days'] ) : 90,
			'capture_fatal_errors' => empty( $input['capture_fatal_errors'] ) ? 0 : 1,
			'store_error_message'  => empty( $input['store_error_message'] ) ? 0 : 1,
			'show_noops'           => empty( $input['show_noops'] ) ? 0 : 1,
			'visual_intelligence'  => empty( $input['visual_intelligence'] ) ? 0 : 1,
			'visual_mode'          => in_array( sanitize_key( $input['visual_mode'] ?? 'hybrid' ), array( 'hybrid', 'graph', 'statistics' ), true ) ? sanitize_key( $input['visual_mode'] ) : 'hybrid',
			'interface_theme'      => in_array( self::get( 'interface_theme' ), array( 'commander_gold', 'sensor_tactical', 'tactical_light' ), true ) ? self::get( 'interface_theme' ) : 'commander_gold', // Legacy site-wide fallback retained; theme selections use user meta.
			'interface_language'   => in_array( sanitize_key( $input['interface_language'] ?? 'auto' ), array( 'auto', 'en', 'de', 'es', 'fr', 'pt', 'it', 'tr', 'ru' ), true ) ? sanitize_key( $input['interface_language'] ) : 'auto',
			'notice_bay'           => empty( $input['notice_bay'] ) ? 0 : 1,
			'sensor_deployment'    => empty( $input['sensor_deployment'] ) ? 0 : 1,
			'sensor_identity'      => empty( $input['sensor_identity'] ) ? 0 : 1,
			'sensor_configuration' => empty( $input['sensor_configuration'] ) ? 0 : 1,
			'sensor_drift'         => empty( $input['sensor_drift'] ) ? 0 : 1,
			'flood_guard'          => empty( $input['flood_guard'] ) ? 0 : 1,
			'flood_window'         => in_array( absint( $input['flood_window'] ?? 300 ), array( 60, 300, 900, 3600 ), true ) ? absint( $input['flood_window'] ) : 300,
			'suppression_patterns' => self::sanitize_patterns( $input['suppression_patterns'] ?? '' ),
			'remove_on_uninstall'  => empty( $input['remove_on_uninstall'] ) ? 0 : 1,
		);
	}

	private static function sanitize_patterns( $value ) {
		$lines = preg_split( '/\R/', (string) $value );
		$clean = array();
		foreach ( array_slice( is_array( $lines ) ? $lines : array(), 0, 100 ) as $line ) {
			$line = trim( sanitize_text_field( $line ) );
			if ( '' !== $line && 0 !== strpos( $line, '#' ) ) {
				$clean[] = substr( $line, 0, 191 );
			}
		}
		return implode( "\n", array_values( array_unique( $clean ) ) );
	}
}