<?php

namespace WPPilot;

defined( 'ABSPATH' ) || exit;

/**
 * Structured logger that writes to the wppilot_log database table.
 * Verbosity is controlled by the `wppilot_log_level` option.
 * No error_log() or file writes in the plugin directory (WP.org Rule 9).
 */
class Logger {

	private const LEVEL_MAP = array(
		'debug'   => 0,
		'info'    => 1,
		'warning' => 2,
		'error'   => 3,
	);

	private int $threshold;

	public function __construct() {
		$level           = get_option( 'wppilot_log_level', 'info' );
		$this->threshold = self::LEVEL_MAP[ $level ] ?? 1;
	}

	public function debug( string $message, array $context = array() ): void {
		$this->log( 'debug', $message, $context );
	}

	public function info( string $message, array $context = array() ): void {
		$this->log( 'info', $message, $context );
	}

	public function warning( string $message, array $context = array() ): void {
		$this->log( 'warning', $message, $context );
	}

	public function error( string $message, array $context = array() ): void {
		$this->log( 'error', $message, $context );
	}

	private function log( string $level, string $message, array $context ): void {
		$numeric = self::LEVEL_MAP[ $level ] ?? 1;
		if ( $numeric < $this->threshold ) {
			return;
		}

		global $wpdb;
		$table = $wpdb->prefix . 'wppilot_log';

		// Append-only custom log table; $wpdb->insert sanitizes values internally and the format is fixed.
		// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching
		$wpdb->insert(
			$table,
			array(
				'level'   => sanitize_text_field( $level ),
				'message' => sanitize_textarea_field( $message ),
				'context' => empty( $context ) ? null : wp_json_encode( $context ),
			),
			array( '%s', '%s', '%s' )
		);
	}
}