<?php



#[AllowDynamicProperties]
final class WP_Recovery_Mode_Key_Service {

	
	private $option_name = 'recovery_keys';

	
	public function generate_recovery_mode_token() {
		return wp_generate_password( 22, false );
	}

	
	public function generate_and_store_recovery_mode_key( $token ) {
		$key = wp_generate_password( 22, false );

		$records = $this->get_keys();

		$records[ $token ] = array(
			'hashed_key' => wp_fast_hash( $key ),
			'created_at' => time(),
		);

		$this->update_keys( $records );

		
		do_action( 'generate_recovery_mode_key', $token, $key );

		return $key;
	}

	
	public function validate_recovery_mode_key( $token, $key, $ttl ) {
		$records = $this->get_keys();

		if ( ! isset( $records[ $token ] ) ) {
			return new WP_Error( 'token_not_found', __( 'Recovery Mode not initialized.' ) );
		}

		$record = $records[ $token ];

		$this->remove_key( $token );

		if ( ! is_array( $record ) || ! isset( $record['hashed_key'], $record['created_at'] ) ) {
			return new WP_Error( 'invalid_recovery_key_format', __( 'Invalid recovery key format.' ) );
		}

		if ( ! wp_verify_fast_hash( $key, $record['hashed_key'] ) ) {
			return new WP_Error( 'hash_mismatch', __( 'Invalid recovery key.' ) );
		}

		if ( time() > $record['created_at'] + $ttl ) {
			return new WP_Error( 'key_expired', __( 'Recovery key expired.' ) );
		}

		return true;
	}

	
	public function clean_expired_keys( $ttl ) {

		$records = $this->get_keys();

		foreach ( $records as $key => $record ) {
			if ( ! isset( $record['created_at'] ) || time() > $record['created_at'] + $ttl ) {
				unset( $records[ $key ] );
			}
		}

		$this->update_keys( $records );
	}

	
	private function remove_key( $token ) {

		$records = $this->get_keys();

		if ( ! isset( $records[ $token ] ) ) {
			return;
		}

		unset( $records[ $token ] );

		$this->update_keys( $records );
	}

	
	private function get_keys() {
		return (array) get_option( $this->option_name, array() );
	}

	
	private function update_keys( array $keys ) {
		return update_option( $this->option_name, $keys, false );
	}
}