<?php
/**
 * Plugin Name: AI Thumbnails Maker - auto featured image & force regenerate thumbnails
 * Plugin URI: https://wp-aifactory.com
 * Description: Automatically generate featured images from first content image. Smart thumbnail generation for posts, pages and custom post types.
 * Version: 1.2.5
 * Requires at least: 6.2
 * Tested up to: 6.9
 * Requires PHP: 8.0
 * Author: Wp Ai Factory
 * Author URI: https://wp-aifactory.com
 * License: GPL v2 or later
 * License URI: https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain: ai-thumbnails-maker
 * Domain Path: /languages
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Main plugin constants
 */
define( 'AITM_VERSION', '1.2.5' );
define( 'AITM_PLUGIN_FILE', __FILE__ );
define( 'AITM_PLUGIN_DIR', plugin_dir_path( __FILE__ ) );
define( 'AITM_PLUGIN_URL', plugin_dir_url( __FILE__ ) );
define( 'AITM_PLUGIN_BASENAME', plugin_basename( __FILE__ ) );

/**
 * Debug mode - emulates AI generation without real API calls
 * Set to true to enable debugging mode (saves API tokens during testing)
 */
define( 'AITM_DEBUG_MODE', false );

/**
 * Autoloader for plugin classes
 *
 * @param string $class_name The class name to load.
 */
function aitm_autoloader( $class_name ) {
	// Check if class belongs to our plugin
	if ( strpos( $class_name, 'AITM_' ) !== 0 ) {
		return;
	}

	// Convert class name to file name
	$class_file = str_replace( 'AITM_', '', $class_name );
	$class_file = strtolower( str_replace( '_', '-', $class_file ) );
	$class_file = 'class-' . $class_file . '.php';

	// Check in includes directory
	$includes_path = AITM_PLUGIN_DIR . 'includes/' . $class_file;
	if ( file_exists( $includes_path ) ) {
		require_once $includes_path;
		return;
	}

	// Check in admin directory
	$admin_path = AITM_PLUGIN_DIR . 'admin/' . $class_file;
	if ( file_exists( $admin_path ) ) {
		require_once $admin_path;
		return;
	}
}
spl_autoload_register( 'aitm_autoloader' );

/**
 * Initialize the plugin
 */
function aitm_init() {
	// Initialize plugin loader
	if ( class_exists( 'AITM_Plugin_Loader' ) ) {
		$plugin = new AITM_Plugin_Loader();
		$plugin->run();
	}
}
add_action( 'plugins_loaded', 'aitm_init' );

/**
 * Activation hook
 */
function aitm_activate() {
	// Set default options
	$default_options = array(
		'auto_generation'       => true,
		'enabled_post_types'    => array( 'post', 'page' ),
		'overwrite_existing'    => false,
		'min_image_width'       => 0,
		'min_image_height'      => 0,
		'generation_method'     => 'first_content_image',
		'ai_content_source'     => 'title_first_paragraph',
		'ai_api_key'            => '',
		'ai_prompt_model'       => 'gpt-4o-mini',
		'ai_language'           => 'en_US',
		'ai_image_model'        => 'dall-e-3',
		'ai_image_resolution'   => '1024x1024',
		'ai_image_style'        => 'natural',
		'title_image_width'     => 1200,
		'title_image_height'    => 630,
		'title_image_bg_color'  => '#2271b1',
		'title_image_text_color' => '#ffffff',
		'title_image_font_size' => 48,
		'default_image_id'      => 0,
		'download_remote_images' => false,
	);

	if ( ! get_option( 'aitm_settings' ) ) {
		add_option( 'aitm_settings', $default_options );
	}

	// Initialize generation log in separate option
	if ( ! get_option( 'aitm_generation_log' ) ) {
		add_option( 'aitm_generation_log', array() );
	}

	// Set activation time for first run
	if ( ! get_option( 'aitm_activation_time' ) ) {
		add_option( 'aitm_activation_time', time() );
	}

	// Create log directory and protection files
	require_once AITM_PLUGIN_DIR . 'includes/class-log-manager.php';
	$log_manager = new AITM_Log_Manager();
	// Directory creation is handled in constructor

	// Schedule daily log cleanup
	if ( ! wp_next_scheduled( 'aitm_daily_log_cleanup' ) ) {
		wp_schedule_event( time(), 'daily', 'aitm_daily_log_cleanup' );
	}
}
register_activation_hook( __FILE__, 'aitm_activate' );

/**
 * Deactivation hook
 */
function aitm_deactivate() {
	// Clear scheduled cron events
	$timestamp = wp_next_scheduled( 'aitm_daily_log_cleanup' );
	if ( $timestamp ) {
		wp_unschedule_event( $timestamp, 'aitm_daily_log_cleanup' );
	}
}
register_deactivation_hook( __FILE__, 'aitm_deactivate' );