<?php
/**
 * Logger for WooList — delegates to WooCommerce's built-in logging system.
 *
 * Logs are visible at WooCommerce → Status → Logs, source: woolist-phplist.
 *
 * Levels:
 *   INFO  — always written (subscription events, connection test results)
 *   ERROR — always written (API failures, config problems)
 *   DEBUG — written only when "Enable debug logging" is checked in settings
 *
 * @package WooList
 */

defined( 'ABSPATH' ) || exit;

class WooList_Logger {

	private const SOURCE = 'woolist-phplist';

	/** Whether verbose debug lines are recorded. */
	private static bool $debug_enabled = false;

	/** Lazy-loaded WC_Logger instance. */
	private static ?WC_Logger_Interface $wc_logger = null;

	/**
	 * Initialise: read the debug setting.
	 * Called on plugins_loaded after options are available.
	 */
	public static function init(): void {
		self::$debug_enabled = ( get_option( 'woolist_enable_debug_log' ) === 'yes' );
	}

	// ── Public logging methods ───────────────────────────────────────────────

	/** Always logged. Use for normal subscription / connection events. */
	public static function info( string $message ): void {
		self::wc()->info( $message, [ 'source' => self::SOURCE ] );
	}

	/** Always logged. */
	public static function error( string $message ): void {
		self::wc()->error( $message, [ 'source' => self::SOURCE ] );
	}

	/**
	 * Logged only when debug mode is enabled.
	 * Use for full request URLs (password redacted), raw responses, flow steps.
	 */
	public static function debug( string $message ): void {
		if ( self::$debug_enabled ) {
			self::wc()->debug( $message, [ 'source' => self::SOURCE ] );
		}
	}

	// ── Utility ─────────────────────────────────────────────────────────────

	/**
	 * Strip the password parameter from a phpList URL before logging it.
	 *
	 * @param string $url Full API URL.
	 * @return string URL with password value replaced by ***.
	 */
	public static function redact_url( string $url ): string {
		return preg_replace( '/(\bpassword=)[^&]+/', '$1***', $url );
	}

	public static function is_debug_enabled(): bool {
		return self::$debug_enabled;
	}

	// ── Internal ─────────────────────────────────────────────────────────────

	/** Return (and lazy-load) the WC_Logger instance. */
	private static function wc(): WC_Logger_Interface {
		if ( self::$wc_logger === null ) {
			self::$wc_logger = wc_get_logger();
		}
		return self::$wc_logger;
	}
}