<?php
/**
 * Plugin Name: AI Share & Summarize
 * Plugin URI: https://servicios.ayudawp.com/
 * Description: Share on social media and also generate summaries with citations from the top AIs (Claude, ChatGPT, Google AI - Gemini, Grok, Perplexity).
 * Version: 1.1.0
 * Author: Fernando Tellado
 * Author URI: https://ayudawp.com/
 * Text Domain: ai-share-summarize
 * Requires at least: 5.0
 * Tested up to: 6.8
 * Requires PHP: 7.4
 * License: GPL v2 or later
 * License URI: https://www.gnu.org/licenses/gpl-2.0.html
 *
 * @package AiShareSummarize
 */

// Prevent direct access
if (!defined('ABSPATH')) {
    exit;
}

// Define plugin constants
define('AYUDAWP_AISS_VERSION', '1.1.0');
define('AYUDAWP_AISS_PLUGIN_DIR', plugin_dir_path(__FILE__));
define('AYUDAWP_AISS_PLUGIN_URL', plugin_dir_url(__FILE__));
define('AYUDAWP_AISS_PLUGIN_BASENAME', plugin_basename(__FILE__));

/**
 * Main plugin class
 */
class AyudaWP_AI_Share_Summarize {
    
    /**
     * Single instance of the plugin
     */
    private static $instance = null;
    
    /**
     * Get single instance (Singleton)
     */
    public static function get_instance() {
        if (null === self::$instance) {
            self::$instance = new self();
        }
        return self::$instance;
    }
    
    /**
     * Private constructor to prevent direct instantiation
     */
    private function __construct() {
        $this->ayudawp_load_includes();
        $this->ayudawp_init_hooks();
    }
    
    /**
     * Load include files
     */
    private function ayudawp_load_includes() {
        require_once AYUDAWP_AISS_PLUGIN_DIR . 'includes/functions-helpers.php';
        require_once AYUDAWP_AISS_PLUGIN_DIR . 'includes/class-icons.php';
        require_once AYUDAWP_AISS_PLUGIN_DIR . 'includes/class-buttons.php';
        require_once AYUDAWP_AISS_PLUGIN_DIR . 'includes/class-frontend.php';
        require_once AYUDAWP_AISS_PLUGIN_DIR . 'includes/class-shortcode.php';
        require_once AYUDAWP_AISS_PLUGIN_DIR . 'includes/class-admin.php';
    }
    
    /**
     * Initialize hooks
     */
    private function ayudawp_init_hooks() {
        add_action('init', array($this, 'ayudawp_init'));
        
        register_activation_hook(__FILE__, array($this, 'ayudawp_activate'));
        register_uninstall_hook(__FILE__, array('AyudaWP_AI_Share_Summarize', 'ayudawp_uninstall'));
        
        // Initialize classes
        new AyudaWP_AISS_Admin();
        new AyudaWP_AISS_Frontend();
        new AyudaWP_AISS_Shortcode();
    }
    
    /**
     * Plugin initialization
     */
    public function ayudawp_init() {
        // Check for version update and migrate settings
        $this->ayudawp_check_version_update();
        
        // Automatic translations are loaded from WordPress.org
        // No need for load_plugin_textdomain() for official repository plugins
    }
    
    /**
     * Check for version update and migrate settings if needed
     */
    private function ayudawp_check_version_update() {
        $current_version = get_option('ayudawp_aiss_version', '1.0.9');
        
        if (version_compare($current_version, AYUDAWP_AISS_VERSION, '<')) {
            $this->ayudawp_migrate_to_v110();
            update_option('ayudawp_aiss_version', AYUDAWP_AISS_VERSION);
        }
    }
    
    /**
     * Migrate settings to version 1.1.0
     */
    private function ayudawp_migrate_to_v110() {
        $options = get_option('ayudawp_aiss_options');
        
        if ($options && !isset($options['seo_button_type'])) {
            // Add new SEO option with default value 'link' for existing installations
            $options['seo_button_type'] = 'link';
            update_option('ayudawp_aiss_options', $options);
        }
    }
    
    /**
     * Plugin activation
     */
    public function ayudawp_activate() {
        $default_options = array(
            'default_prompt' => ayudawp_aiss_get_default_prompt(),
            'enabled_buttons' => array('chatgpt', 'claude', 'twitter', 'linkedin'),
            'display_locations' => array('posts'),
            'auto_insert_position' => 'after_content',
            'auto_insert_content_types' => array('post'),
            'twitter_handle' => '',
            'custom_text' => '',
            'title_text' => __('Social Share or Summarize with AI', 'ai-share-summarize'),
            'title_style' => 'span',
            'button_order' => 'ayudawp_ai_first',
            'button_colors' => 'brand',
            'show_icons' => false,
            'icon_style' => 'circular',
            'delete_data_on_uninstall' => false,
            'seo_button_type' => 'link' // Default to links for new installations
        );
        
        add_option('ayudawp_aiss_options', $default_options);
        update_option('ayudawp_aiss_version', AYUDAWP_AISS_VERSION);
        set_transient('ayudawp_aiss_just_activated', true, 60);
    }
    
    /**
     * Plugin uninstallation
     */
    public static function ayudawp_uninstall() {
        $options = get_option('ayudawp_aiss_options');
        $delete_data = isset($options['delete_data_on_uninstall']) ? $options['delete_data_on_uninstall'] : false;
        
        if ($delete_data) {
            delete_option('ayudawp_aiss_options');
            delete_option('ayudawp_aiss_version');
            delete_option('ayudawp_aiss_activation_notice_dismissed');
            delete_transient('ayudawp_aiss_just_activated');
        }
    }
}

// Initialize the plugin
AyudaWP_AI_Share_Summarize::get_instance();