<?php

if ( ! function_exists( 'is_plugin_active' ) ) {
    require_once ABSPATH . 'wp-admin/includes/plugin.php';
}

/**
 * This file contains the main plugin class definition
 *
 */
class AltTextLab {

    /**
     * Component responsible for managing and registering all WordPress hooks
     * that drive the plugin functionality.
     */
    protected $loader;

    /**
     * Distinct name used to identify this plugin within WordPress.
     */
    protected $plugin_name;

    /**
     * Version number indicating the plugin release.
     */
    protected $version;

    /**
     * Establishes the essential operations and features of the plugin.
     *
     */
    public function __construct() {
        if ( defined( 'ALT_TEXT_LAB_VERSION' ) ) {
            $this->version = ALT_TEXT_LAB_VERSION;
        } else {
            $this->version = '1.0.0';
        }
        $this->plugin_name = 'AltTextLab';

        $this->load_dependencies();
        $this->define_admin_hooks();
    }

    /**
     * Load all necessary component files required by the plugin.
     *
     */
    private function load_dependencies() {

        /**
         * Provides SEO-related functionality for the plugin.
         */
        require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-alttextlab-seo-keywords.php';

        /**
         * Handles integration with WooCommerce for alt text generation.
         */
        require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-alttextlab-wc-integration.php';

        /**
         * Handles all logging operations for the AltTextLab plugin.
         */
        require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-alttextlab-loger.php';

        /**
         * Database storage handler for AltTextLab plugin assets.
         */
        require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-alttextlab-storage.php';

        /**
         * Helper utilities for WordPress attachment operations.
         */
        require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-alttextlab-attachment-helper.php';

        /**
         * Collection of helper functions utilized throughout the plugin.
         */
        require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-alttextlab-utility.php';

        /**
         * Handles database setup and schema updates.
         */
        require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-alttextlab-database.php';

        /**
         * Manages and coordinates all WordPress hooks and filters
         * for the main plugin functionality.
         */
        require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-alttextlab-loader.php';

        /**
         * Handles communication with external API services.
         */
        require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-alttextlab-api.php';

        /**
         * Controls configuration options and admin settings interface.
         */
        require_once plugin_dir_path(dirname(__FILE__)) . 'admin/class-alttextlab-settings.php';

        /**
         * Manages WordPress post interactions and processing.
         */
        require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-alttextlab-post.php';

        /**
         * Processes and manages media attachments within WordPress.
         */
        require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-alttextlab-attachment.php';

        /**
         * Implements all administrative interface functionality and backend operations.
         */
        require_once plugin_dir_path(dirname(__FILE__)) . 'admin/class-alttextlab-admin.php';

        /**
         * Handles all admin notices for the plugin (setup warnings, API errors, bulk actions).
         */
        require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-alttextlab-notice.php';

        /**
         * Renders admin UI components for post alt text generation.
         */
        require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-alttextlab-post-ui.php';

        /**
         * Helper utilities for WPML generation operations.
         */
        require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-alttextlab-wpml-helper.php';

        /**
         * Registers AltTextLab abilities for Abilities API.
         */
        require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-alttextlab-ability.php';

        $this->loader = new AltTextLab_Loader();
    }


    public function enqueue_meta_box_styles($hook) {
        global $post;

        if ($hook === 'post.php' || $hook === 'post-new.php') {
            if (isset($post)) {
                wp_enqueue_style(
                    'atl-meta-box-style',
                    plugin_dir_url(__FILE__) . '../admin/css/alttextlab-generate-post-alt-block.css'
                );
            }
        }
    }

    /**
     * Sets up all WordPress action and filter hooks for the administrative
     * section of the plugin.
     *
     */
    private function define_admin_hooks() {
        $database = new AltTextLab_Database();
        $settings = new AltTextLab_Settings( $this->get_version() );
        $admin = new AltTextLab_Admin( $this->get_plugin_name(), $this->get_version() );
        $attachment = new AltTextLab_Attachment();
        $post = new AltTextLab_Post();
        $post_ui = new AltTextLab_Post_UI();
        $notice = new AltTextLab_Notice();
        $ability = new AltTextLab_Ability();

        // Database
        $this->loader->add_action( 'plugins_loaded', $database, 'check_database_schema' );

        // Admin
        $this->loader->add_action( 'admin_enqueue_scripts', $admin, 'enqueue_styles' );
        $this->loader->add_action( 'admin_enqueue_scripts', $admin, 'enqueue_scripts' );
        $this->loader->add_action( 'admin_init', $settings, 'clear_error_logs' );

        // Settings
        $this->loader->add_action( 'admin_menu', $settings, 'register_settings_pages' );
        $this->loader->add_action( 'admin_menu', $settings, 'register_account_settings' );
        $this->loader->add_action( 'admin_menu', $settings, 'register_settings' );
        $this->loader->add_action( 'admin_init', $settings, 'clear_error_logs' );
        $this->loader->add_action( 'wp_ajax_alttextlab_expire_insufficient_credits_notice', $settings, 'expire_insufficient_credits_notice' );
        $this->loader->add_action( 'wp_ajax_alttextlab_expire_monthly_limit_notice', $settings, 'expire_monthly_limit_notice' );
        $this->loader->add_action( 'wp_ajax_alttextlab_save_review_settings', $settings, 'handleReviewBannerSettings' );
        $this->loader->add_action( 'wp_ajax_alttextlab_save_account_review_block_settings', $settings, 'handleAccountReviewBlockSettings' );
        $this->loader->add_action( 'admin_init', $settings, 'remove_api_key_missing_param' );
        $this->loader->add_filter( 'pre_update_option_alttextlab_api_key', $settings, 'save_api_key', 10, 2 );
        $this->loader->add_filter( 'pre_update_option_alttextlab_wpml_selected_langs', $settings, 'keep_selected_wpml_languages', 10, 3);

        // Attachment
        $this->loader->add_action( 'wp_ajax_alttextlab_single_generate', $attachment, 'ajax_single_generate' );
        $this->loader->add_action( 'add_attachment', $attachment, 'add_attachment');
        $this->loader->add_action( 'wp_ajax_alttextlab_edit_history', $attachment, 'ajax_edit_history' );
        $this->loader->add_action( 'wp_ajax_alttextlab_bulk_generate_for_image', $attachment, 'alttextlab_bulk_generate_for_image' );
        $this->loader->add_action( 'wp_ajax_alttextlab_bulk_generate', $attachment, 'alttextlab_bulk_generate' );
        $this->loader->add_action( 'wp_ajax_alttextlab_check_image_eligibility', $attachment, 'ajax_is_attachment_eligible' );
        $this->loader->add_filter( 'bulk_actions-upload', $attachment, 'add_bulk_select_action' );
        $this->loader->add_filter( 'handle_bulk_actions-upload', $attachment, 'bulk_select_action_handler', 10, 3 );
        $this->loader->add_action( 'restrict_manage_posts', $attachment, 'render_media_alt_filter_dropdown', 1 );
        $this->loader->add_action( 'pre_get_posts', $attachment, 'filter_media_library_query_by_alt' );


        //Posts
        $this->loader->add_action( 'deleted_post', $post, 'on_post_deleted' );
        $this->loader->add_action( 'add_meta_boxes', $post_ui, 'add_bulk_generate_meta_box' );
        $this->loader->add_action( 'wp_ajax_prepare_transition', $post, 'collect_list_enrich_post_id' );
        $this->loader->add_action( 'wp_ajax_alttextlab_enrich_post_generate', $post, 'post_bulk_generate_alt_text_ajax' );
        $this->loader->add_action( 'wp_ajax_alttextlab_check_enrich_post_content_transient', $notice, 'display_enrich_post_content_success_notice' );
        $this->loader->add_action( 'admin_init', $post, 'register_bulk_action' );
        $this->loader->add_action('admin_enqueue_scripts', $this, 'enqueue_meta_box_styles');
        $this->loader->add_action( 'wp_ajax_alttextlab_sync_posts_batch', $post, 'ajax_sync_posts_batch' );
        $this->loader->add_action( 'wp_ajax_alttextlab_sync_posts_process_post', $post, 'ajax_sync_posts_process_post' );

        //Notice
        $this->loader->add_action( 'admin_notices', $notice, 'display_setup_notice' );
        $this->loader->add_action( 'admin_notices', $notice, 'display_tokens_notice' );
        $this->loader->add_action( 'admin_notices', $notice, 'display_notice_try_later' );
        $this->loader->add_action( 'admin_notices', $notice, 'display_notice_api_key_invalid' );
        $this->loader->add_action( 'admin_notices', $notice, 'display_api_key_missing_notice' );
        $this->loader->add_action( 'admin_notices', $notice, 'render_bulk_select_notice' );
        $this->loader->add_action( 'admin_notices', $notice, 'display_enrich_post_content_success_notice' );
        $this->loader->add_action( 'admin_notices', $notice, 'display_notice_monthly_limit_exceeded' );

        //Ability
        $this->loader->add_action( 'wp_abilities_api_categories_init', $ability, 'register_categories' );
        $this->loader->add_action( 'wp_abilities_api_init', $ability, 'register_abilities' );
    }

    /**
     * Activates the plugin by executing all registered WordPress hooks.
     *
     */
    public function run() {
        $this->loader->run();
    }

    /**
     * Returns the plugin's identifier used for WordPress integration
     * and localization features.
     *
     */
    public function get_plugin_name() {
        return $this->plugin_name;
    }

    /**
     * Provides access to the current plugin version identifier.
     *
     */
    public function get_version() {
        return $this->version;
    }

}