<?php
/**
 * Plugin Name:       AI Discovery Files – llms.txt & AI Visibility
 * Plugin URI:        https://www.ai-visibility.org.uk/wordpress-plugin/ai-discovery-files/
 * Description:       The only WordPress plugin that generates all 10 AI Discovery Files and tracks which AI bots visit your site. Built by 365i.
 * Version:           1.3.5
 * Requires at least: 6.2
 * Requires PHP:      8.0
 * Author:            Mark McNeece, 365i
 * Author URI:        https://www.365iwebdesign.co.uk/news/author/mark-mcneece/
 * License:           GPL v2 or later
 * License URI:       https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain:       ai-discovery-files
 * Domain Path:       /languages
 *
 * @package AIDF
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Plugin constants.
 */
define( 'AIDF_VERSION', '1.3.5' );
define( 'AIDF_PLUGIN_FILE', __FILE__ );
define( 'AIDF_PLUGIN_DIR', plugin_dir_path( __FILE__ ) );
define( 'AIDF_PLUGIN_URL', plugin_dir_url( __FILE__ ) );
define( 'AIDF_PLUGIN_BASENAME', plugin_basename( __FILE__ ) );

/**
 * Autoload core classes.
 */
require_once AIDF_PLUGIN_DIR . 'includes/class-plugin.php';
require_once AIDF_PLUGIN_DIR . 'includes/class-data-collector.php';
require_once AIDF_PLUGIN_DIR . 'includes/class-generator.php';
require_once AIDF_PLUGIN_DIR . 'includes/class-server.php';
require_once AIDF_PLUGIN_DIR . 'includes/class-validator.php';
require_once AIDF_PLUGIN_DIR . 'includes/class-crawler-registry.php';
require_once AIDF_PLUGIN_DIR . 'includes/class-crawler-logger.php';
require_once AIDF_PLUGIN_DIR . 'includes/class-crawler-analytics.php';
require_once AIDF_PLUGIN_DIR . 'includes/class-crawler-conflicts.php';

/**
 * Create or upgrade the crawler analytics database tables.
 *
 * Uses dbDelta() so it is safe to call on both fresh installs and upgrades.
 * Stores the installed DB version in the aidf_db_version option.
 */
function aidf_create_crawler_tables() {
	global $wpdb;

	$charset_collate = $wpdb->get_charset_collate();

	$sql = "CREATE TABLE {$wpdb->prefix}aidf_crawler_log (
  id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  bot_name varchar(50) NOT NULL,
  bot_ua varchar(500) NOT NULL DEFAULT '',
  url_path varchar(500) NOT NULL DEFAULT '',
  status_code smallint(5) unsigned NOT NULL DEFAULT 200,
  created_at datetime NOT NULL,
  PRIMARY KEY  (id),
  KEY bot_date (bot_name, created_at),
  KEY date_idx (created_at)
) $charset_collate;

CREATE TABLE {$wpdb->prefix}aidf_crawler_summary (
  id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  bot_name varchar(50) NOT NULL,
  log_date date NOT NULL,
  hit_count int(10) unsigned NOT NULL DEFAULT 0,
  top_page varchar(500) NOT NULL DEFAULT '',
  status_200 int(10) unsigned NOT NULL DEFAULT 0,
  status_403 int(10) unsigned NOT NULL DEFAULT 0,
  status_other int(10) unsigned NOT NULL DEFAULT 0,
  PRIMARY KEY  (id),
  UNIQUE KEY bot_day (bot_name, log_date),
  KEY date_idx (log_date)
) $charset_collate;";

	require_once ABSPATH . 'wp-admin/includes/upgrade.php';
	dbDelta( $sql );

	update_option( 'aidf_db_version', AIDF_VERSION );
}

/**
 * Activation hook.
 */
function aidf_activate() {
	AIDF_Server::register_rewrite_rules();
	flush_rewrite_rules();

	if ( false === get_option( 'aidf_settings' ) ) {
		update_option( 'aidf_settings', AIDF_Plugin::get_defaults() );
	}

	if ( false === get_option( 'aidf_activated_at' ) ) {
		update_option( 'aidf_activated_at', time(), false );
	}

	set_transient( 'aidf_activation_redirect', true, 30 );

	aidf_create_crawler_tables();
}
register_activation_hook( __FILE__, 'aidf_activate' );

/**
 * Deactivation hook.
 */
function aidf_deactivate() {
	flush_rewrite_rules();
	AIDF_Crawler_Logger::clear_cron();
}
register_deactivation_hook( __FILE__, 'aidf_deactivate' );

/**
 * Boot the plugin.
 */
function aidf_init() {
	AIDF_Plugin::get_instance();
}
add_action( 'plugins_loaded', 'aidf_init' );

/**
 * Cron: prune old crawler log entries.
 */
add_action( 'aidf_prune_crawler_log', array( 'AIDF_Crawler_Logger', 'prune_log' ) );

/**
 * Cron: rebuild crawler summary table from raw log data.
 */
add_action( 'aidf_rebuild_crawler_summary', array( 'AIDF_Crawler_Analytics', 'rebuild_summary' ) );

/**
 * Run DB migrations when the plugin version has advanced.
 *
 * Hooked to admin_init so it runs on every admin page load, but only
 * performs work when the stored version is behind the current version.
 */
function aidf_maybe_upgrade_db() {
	$installed_version = get_option( 'aidf_db_version', '0' );
	if ( version_compare( $installed_version, AIDF_VERSION, '<' ) ) {
		aidf_create_crawler_tables();
	}
}
add_action( 'admin_init', 'aidf_maybe_upgrade_db' );