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

class VC_Logger {
	const STORE = 'vc_activity_log';
	const MAX   = 300;

	public static function log( $message, $force = false ) {
		if ( ! $force && ! vc_get_option( 'debug_logging', false ) ) {
			return;
		}

		if ( is_array( $message ) || is_object( $message ) ) {
			$message = wp_json_encode( self::redact( $message ) );
		} else {
			$message = self::redact_string( (string) $message );
		}

		error_log( '[Viator Collector] ' . $message ); // phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_error_log
	}

	/**
	 * Record an informational event in the admin activity log.
	 */
	public static function info( $message ) {
		self::record( 'info', $message );
		self::log( $message );
	}

	/**
	 * Record an error event in the admin activity log and the PHP error log.
	 */
	public static function error( $message ) {
		self::record( 'error', $message );
		self::log( $message, true );
	}

	/**
	 * Append an entry to the rolling, in-database activity log shown in admin.
	 */
	public static function record( $level, $message ) {
		if ( is_array( $message ) || is_object( $message ) ) {
			$message = wp_json_encode( self::redact( $message ) );
		} else {
			$message = self::redact_string( (string) $message );
		}

		$log = get_option( self::STORE, array() );
		if ( ! is_array( $log ) ) {
			$log = array();
		}

		$log[] = array(
			't'     => current_time( 'mysql' ),
			'level' => ( 'error' === $level ? 'error' : 'info' ),
			'msg'   => $message,
		);

		if ( count( $log ) > self::MAX ) {
			$log = array_slice( $log, -self::MAX );
		}

		update_option( self::STORE, $log, false );
	}

	/**
	 * Recent activity log entries, newest first.
	 */
	public static function get_log() {
		$log = get_option( self::STORE, array() );
		if ( ! is_array( $log ) ) {
			return array();
		}
		return array_reverse( $log );
	}

	public static function clear_log() {
		delete_option( self::STORE );
	}

	private static function redact( $value ) {
		if ( is_array( $value ) ) {
			foreach ( $value as $key => $item ) {
				if ( preg_match( '/api.?key|exp-api-key|authorization|token|secret/i', (string) $key ) ) {
					$value[ $key ] = '[redacted]';
				} else {
					$value[ $key ] = self::redact( $item );
				}
			}
		} elseif ( is_string( $value ) ) {
			$value = self::redact_string( $value );
		}
		return $value;
	}

	private static function redact_string( $value ) {
		$key = vc_get_api_key();
		if ( $key ) {
			$value = str_replace( $key, '[redacted]', $value );
		}
		return preg_replace( '/(exp-api-key|api_key|apiKey|token|secret)\s*[:=]\s*[^,\s]+/i', '$1=[redacted]', $value );
	}
}