<?php
/**
 * Plugin Name: Share On Bluesky
 * Plugin URI: https://github.com/yourusername/bluesky-connctor
 * Description: Share WordPress posts directly to Bluesky with customizable formatting
 * Author: Eugene Web Doctor
 * Author URI: https://eugenewebdoctor.com/
 * Version: 1.0.0
 * License: GPL-2.0+
 * License URI: http://www.gnu.org/licenses/gpl-2.0.txt
 * Text Domain: bluesky-connctor
 * Domain Path: /languages
 *
 * @package Bluesky_Connector
 */

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

// Define constants
define('BLUESKY_CONNECTOR_VERSION', '1.0.0');
define('BLUESKY_CONNECTOR_FILE', __FILE__);
define('BLUESKY_CONNECTOR_DIR', plugin_dir_path(__FILE__));
define('BLUESKY_CONNECTOR_URL', plugin_dir_url(__FILE__));
define('BLUESKY_API_DOMAIN', 'https://bsky.social');

// Include required files
require_once BLUESKY_CONNECTOR_DIR . 'includes/bluesky-api.php';
require_once BLUESKY_CONNECTOR_DIR . 'includes/bluesky-auth.php';
require_once BLUESKY_CONNECTOR_DIR . 'includes/post-formatter.php';

/**
 * Main plugin class
 */
class Bluesky_Connector
{
    /**
     * Plugin instance
     *
     * @var Bluesky_Connector
     */
    private static $instance = null;

    /**
     * Plugin settings
     *
     * @var array
     */
    private $settings = array();

    /**
     * Debug mode flag
     *
     * @var bool
     */
    private $debug_mode = false;

    /**
     * Handle post status transitions
     *
     * @param string  $new_status New post status.
     * @param string  $old_status Old post status.
     * @param WP_Post $post       Post object.
     */
    public function handle_post_transition($new_status, $old_status, $post)
    {
        error_log('[Bluesky Connector] Post transition from ' . $old_status . ' to ' . $new_status . ' for post ' . $post->ID);
        error_log('[Bluesky Connector] Post type: ' . $post->post_type);
        error_log('[Bluesky Connector] Has featured image: ' . (has_post_thumbnail($post->ID) ? 'Yes' : 'No'));
        error_log('[Bluesky Connector] Theme supports thumbnails: ' . (current_theme_supports('post-thumbnails') ? 'Yes' : 'No'));

        if ($new_status === 'publish' && $old_status !== 'publish') {
            $this->handle_post_save($post->ID, $post);
        }
    }

    /**
     * Get plugin instance
     *
     * @return Bluesky_Connector
     */
    public static function get_instance()
    {
        if (null === self::$instance) {
            self::$instance = new self();
        }
        return self::$instance;
    }

    /**
     * Constructor
     */
    private function __construct()
    {
        $this->debug_mode = defined('WP_DEBUG') && WP_DEBUG;

        // Load plugin text domain
        add_action('init', array($this, 'load_textdomain'));

        // Initialize plugin
        add_action('init', array($this, 'init'));

        add_action('transition_post_status', array($this, 'handle_post_transition'), 10, 3);
        

        // Admin hooks
        if (is_admin()) {
            add_action('admin_init', array($this, 'admin_init'));
            add_action('admin_menu', array($this, 'add_admin_menu'));
            add_action('admin_notices', array($this, 'admin_notices'));
            add_action('add_meta_boxes', array($this, 'add_post_meta_box'));
            add_action('save_post', array($this, 'handle_post_save'), 10, 2);
            add_action('admin_enqueue_scripts', array($this, 'enqueue_admin_scripts'));
            add_filter('plugin_action_links_' . plugin_basename(__FILE__), array($this, 'add_settings_link'));
        }

        // Register activation/deactivation hooks
        register_activation_hook(__FILE__, array($this, 'activate'));
        register_deactivation_hook(__FILE__, array($this, 'deactivate'));

        // AJAX handlers
        add_action('wp_ajax_bluesky_post_now', array($this, 'handle_immediate_post'));
    }

    /**
     * Load plugin text domain
     */
    public function load_textdomain()
    {
        load_plugin_textdomain('bluesky-connctor', false, dirname(plugin_basename(__FILE__)) . '/languages');
    }

    /**
     * Initialize plugin
     */
    public function init()
    {
        add_theme_support('post-thumbnails');

        $this->settings = array(
            'domain' => get_option('bluesky_domain', BLUESKY_API_DOMAIN),
            'identifier' => get_option('bluesky_identifier', ''),
            'did' => get_option('bluesky_did', ''),
            'access_jwt' => get_option('bluesky_access_jwt', ''),
        );

        // Handle form submissions
        if (is_admin() && !empty($_POST['action']) && $_POST['action'] === 'update_bluesky_settings') {
            $this->handle_settings_update();
        }
    }

    private function handle_settings_update()
    {
        if (!current_user_can('manage_options')) {
            return;
        }

        check_admin_referer('bluesky_connector_settings');

        if (empty($_POST['action']) || $_POST['action'] !== 'update_bluesky_settings') {
            return;
        }

        // Get the settings from the form
        $settings = isset($_POST['bluesky_connector_settings']) ? $_POST['bluesky_connector_settings'] : array();

        // Validate and sanitize inputs
        $identifier = isset($settings['identifier'])
            ? trim(sanitize_text_field(wp_unslash($settings['identifier'])))
            : '';

        $password = isset($settings['password'])
            ? trim(sanitize_text_field(wp_unslash($settings['password'])))
            : '';

        // Try to authenticate
        $auth = new Bluesky_Auth($identifier, $password);
        $result = $auth->get_access_token();

        if (isset($result['error'])) {
            update_option('bluesky_connection_status', 'error');
            update_option('bluesky_last_error', sanitize_text_field($result['error']));
            add_settings_error(
                'bluesky_connector_settings',
                'auth_failed',
                sprintf(
                    esc_html__('Authentication failed: %s', 'bluesky-connctor'),
                    esc_html($result['error'])
                )
            );
        } else {
            // Save the credentials in the settings array
            $current_settings = get_option('bluesky_connector_settings', array());
            $settings_to_save = array_merge($current_settings, array(
                'domain' => BLUESKY_API_DOMAIN,
                'identifier' => $identifier,
                'password' => $password,
                'post_format' => $current_settings['post_format'] ?? 'title-excerpt-link',
                'include_title' => $current_settings['include_title'] ?? true,
                'title_separator' => $current_settings['title_separator'] ?? "\n\n"
            ));

            // Update all settings
            update_option('bluesky_connector_settings', $settings_to_save);
            update_option('bluesky_identifier', $identifier); // Keep for backward compatibility
            update_option('bluesky_connection_status', 'connected');
            update_option('bluesky_last_error', '');

            add_settings_error(
                'bluesky_connector_settings',
                'settings_updated',
                esc_html__('Settings saved and connected successfully.', 'bluesky-connctor'),
                'success'
            );
        }
    }

    /**
     * Register plugin settings
     */
    public function admin_init()
{
    // Add the settings page to allowed options
    add_allowed_options(array(
        'bluesky-connector' => array(
            'bluesky_connector_settings'
        )
    ));

        // Register the main settings
        register_setting(
            'bluesky-connector',
            'bluesky_connector_settings',
            array(
                'type' => 'object',
                'description' => esc_html__('Bluesky Connector Settings', 'bluesky-connctor'),
                'sanitize_callback' => array($this, 'sanitize_settings'),
                'default' => array(
                    'domain' => BLUESKY_API_DOMAIN,
                    'identifier' => '',
                    'password' => '',
                    'post_format' => 'title-excerpt-link',
                    'include_title' => true,
                    'title_separator' => "\n\n"
                ),
                'show_in_rest' => false,
            )
        );

        // Add settings sections
        add_settings_section(
            'bluesky_connection_section',
            esc_html__('Connection Settings', 'bluesky-connctor'),
            array($this, 'render_connection_section'),
            'bluesky-connector'
        );

        add_settings_section(
            'bluesky_post_format_section',
            esc_html__('Post Format Settings', 'bluesky-connctor'),
            array($this, 'render_format_section'),
            'bluesky-connector'
        );
         
    }

    public function sanitize_settings($input)
    {
        $sanitized = array();

        // Domain is fixed
        $sanitized['domain'] = BLUESKY_API_DOMAIN;

        // Sanitize identifier
        if (isset($input['identifier'])) {
            $sanitized['identifier'] = sanitize_text_field($input['identifier']);
        }

        // Handle password - note we don't store this
        if (isset($input['password'])) {
            $sanitized['password'] = sanitize_text_field($input['password']);
        }

        // Sanitize post format
        $sanitized['post_format'] = isset($input['post_format'])
            ? sanitize_text_field($input['post_format'])
            : 'title-excerpt-link';

        // Sanitize include_title
        $sanitized['include_title'] = isset($input['include_title']);

        // Sanitize title separator
        $sanitized['title_separator'] = isset($input['title_separator'])
            ? sanitize_text_field($input['title_separator'])
            : "\n\n";

        return $sanitized;
    }

    public function render_connection_section()
    {
        echo '<p>' . esc_html__('Configure your Bluesky connection settings.', 'bluesky-connctor') . '</p>';
    }

    public function render_format_section()
    {
        echo '<p>' . esc_html__('Configure how your posts appear on Bluesky.', 'bluesky-connctor') . '</p>';
    }


    /**
     * Enqueue admin scripts and styles
     *
     * @param string $hook The current admin page.
     */
    public function enqueue_admin_scripts($hook) {
        // Only load on post edit screens and settings page
        if (!in_array($hook, array('post.php', 'post-new.php', 'settings_page_bluesky-settings'))) {
            return;
        }
    
        // Enqueue WordPress media uploader
    
        wp_enqueue_script(
            'bluesky-admin',
            BLUESKY_CONNECTOR_URL . 'assets/js/admin.js',
            array('jquery'), 
            BLUESKY_CONNECTOR_VERSION,
            true
        );
    
        wp_localize_script('bluesky-admin', 'blueskyAdmin', array(
            'ajaxUrl' => admin_url('admin-ajax.php'),
            'strings' => array(
                'selectImage' => esc_html__('Select Fallback Image', 'bluesky-connctor'),
                'useImage' => esc_html__('Use this image', 'bluesky-connctor'),
                'publishing' => esc_html__('Publishing...', 'bluesky-connctor'),
                'retrying' => esc_html__('Retrying...', 'bluesky-connctor'),
                'reposting' => esc_html__('Reposting...', 'bluesky-connctor'),
                'retry' => esc_html__('Retry Post', 'bluesky-connctor'),
                'repost' => esc_html__('Post Again', 'bluesky-connctor'),
                'error' => esc_html__('An error occurred. Please try again.', 'bluesky-connctor'),
                'confirmRepost' => esc_html__('Are you sure you want to post this content again?', 'bluesky-connctor')
            ),
            'nonce' => wp_create_nonce('bluesky_post_now'),
        ));
    
        wp_enqueue_style(
            'bluesky-admin',
            BLUESKY_CONNECTOR_URL . 'assets/css/admin.css',
            array(),
            BLUESKY_CONNECTOR_VERSION
        );
    }

    /**
    * Handle post saving and immediate posting to Bluesky
    *
    * @param int     $post_id Post ID.
    * @param WP_Post $post    Post object.
    */
    public function handle_post_save($post_id, $post)
    {
    error_log('[Bluesky Connector] handle_post_save called for post ' . $post_id);

    // Skip autosaves
    if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {
        error_log('[Bluesky Connector] Skipping - autosave');
        return;
    }

    // Check post type
    if ('post' !== $post->post_type) {
        error_log('[Bluesky Connector] Skipping - not a post: ' . $post->post_type);
        return;
    }

    // Only proceed for published posts
    if ('publish' !== $post->post_status) {
        error_log('[Bluesky Connector] Skipping - not published: ' . $post->post_status);
        return;
    }

    $already_posted = get_post_meta($post_id, '_bluesky_posted', true);
    $had_image = get_post_meta($post_id, '_bluesky_had_image', true);
    $has_image_now = has_post_thumbnail($post->ID);

    error_log('[Bluesky Connector] Post status check:');
    error_log('[Bluesky Connector] - Already posted: ' . ($already_posted ? 'yes' : 'no'));
    error_log('[Bluesky Connector] - Had image: ' . ($had_image ? 'yes' : 'no'));
    error_log('[Bluesky Connector] - Has image now: ' . ($has_image_now ? 'yes' : 'no'));

    // If already posted, only proceed if image status has changed
    if ($already_posted) {
        if ($had_image === $has_image_now) {
            error_log('[Bluesky Connector] Skipping - already posted and image status unchanged');
            return;
        }
        error_log('[Bluesky Connector] Image status changed, proceeding with update');
    }

    // Only check nonce if this is a manual save from the editor
    if (isset($_POST['bluesky_post_meta_box_nonce'])) {
        if (!wp_verify_nonce(
            sanitize_text_field(wp_unslash($_POST['bluesky_post_meta_box_nonce'])),
            'bluesky_post_meta_box'
        )) {
            error_log('[Bluesky Connector] Skipping - invalid nonce on manual save');
            return;
        }
    }

    error_log('[Bluesky Connector] Calling post_to_bluesky');

    // Post to Bluesky
    $response = $this->post_to_bluesky($post);

    // If successful, update image status
    if (!isset($response['error'])) {
        update_post_meta($post_id, '_bluesky_had_image', $has_image_now);
    }
}

    /**
     * Post content to Bluesky
     *
     * @param WP_Post $post Post object.
     * @return array Response from Bluesky API.
     */
    private function post_to_bluesky($post)
    {
        try {
            error_log('[Bluesky Connector] Starting post_to_bluesky for post ' . $post->ID);
            update_post_meta($post->ID, '_bluesky_status', 'pending');
    
            $identifier = get_option('bluesky_identifier');
            $password = get_option('bluesky_password');
    
            if (empty($identifier) || empty($password)) {
                throw new Exception('Bluesky identifier or password is missing.');
            }
    
            // Log settings (without password)
            error_log('[Bluesky Connector] Using identifier: ' . $identifier);
    
            // Authenticate and get access token
            $auth = new Bluesky_Auth($identifier, $password);
            $token = $auth->get_access_token();
            
            if (isset($token['error'])) {
                throw new Exception($token['error']);
            }
    
            // Create Post_Formatter instance
            $formatter = new Post_Formatter($token, get_option('bluesky_did'));
            $response = $formatter->format_and_post($post);
    
            // Update meta data if successful
            if (!isset($response['error'])) {
                $record_key = $response['uri'];
                if (strpos($response['uri'], 'at://') === 0) {
                    $parts = explode('/', $response['uri']);
                    $record_key = end($parts);
                }
    
                update_post_meta($post->ID, '_bluesky_posted', current_time('mysql'));
                update_post_meta($post->ID, '_bluesky_post_id', sanitize_text_field($record_key));
                update_post_meta($post->ID, '_bluesky_status', 'success');
                update_option('bluesky_last_post_time', time());
            }
    
            return $response;
    
        } catch (Exception $e) {
            update_post_meta($post->ID, '_bluesky_status', 'error');
            update_post_meta($post->ID, '_bluesky_error', sanitize_text_field($e->getMessage()));
            $this->log_error('Bluesky posting failed: ' . $e->getMessage());
            return array('error' => $e->getMessage());
        }
    }

    /**
     * Log error message if debug mode is enabled
     *
     * @param string $message Error message to log.
     * @param array  $data    Optional data to log.
     */
    // In bluesky-connector.php, inside the Bluesky_Connector class
    private function log_error($message, $data = array())
    {
        if (defined('WP_DEBUG') && WP_DEBUG) {
            if (is_array($data) || is_object($data)) {
                $data = wp_json_encode($data);
            }
            error_log(sprintf('[Bluesky Connector] %s | Data: %s', $message, $data));
        }
    }

    /**
     * Handle AJAX immediate post request
     */
    public function handle_immediate_post()
    {
        check_ajax_referer('bluesky_post_now', 'nonce');

        if (!current_user_can('edit_posts')) {
            wp_send_json_error(array(
                'message' => esc_html__('Permission denied.', 'bluesky-connctor')
            ));
        }

        $post_id = filter_input(INPUT_POST, 'post_id', FILTER_VALIDATE_INT);
        if (!$post_id) {
            wp_send_json_error(array(
                'message' => esc_html__('Invalid post ID.', 'bluesky-connctor')
            ));
        }

        $post = get_post($post_id);
        if (!$post) {
            wp_send_json_error(array(
                'message' => esc_html__('Post not found.', 'bluesky-connctor')
            ));
        }

        $response = $this->post_to_bluesky($post);

        if (isset($response['error'])) {
            wp_send_json_error(array(
                'message' => esc_html($response['error'])
            ));
        } else {
            wp_send_json_success(array(
                'message' => esc_html__('Posted successfully to Bluesky.', 'bluesky-connctor'),
                'post_id' => esc_html($response['uri'])
            ));
        }
    }

    /**
     * Add admin menu items
     */
    public function add_admin_menu()
    {
        add_options_page(
            esc_html__('Bluesky Settings', 'bluesky-connctor'),
            esc_html__('Bluesky', 'bluesky-connctor'),
            'manage_options',
            'bluesky-settings',
            array($this, 'render_settings_page')
        );
    }

    /**
     * Add post meta box
     */
    public function add_post_meta_box()
    {
        add_meta_box(
            'bluesky_post_meta',
            esc_html__('Bluesky Status', 'bluesky-connctor'),
            array($this, 'render_post_meta_box'),
            'post',
            'side',
            'default'
        );
    }

    /**
     * Render post meta box
     *
     * @param WP_Post $post Post object.
     */
    public function render_post_meta_box($post)
    {
        // Add this line at the very start of the function
        wp_nonce_field('bluesky_post_meta_box', 'bluesky_post_meta_box_nonce');

        $status = get_post_meta($post->ID, '_bluesky_status', true);
        $posted_date = get_post_meta($post->ID, '_bluesky_posted', true);
        $error = get_post_meta($post->ID, '_bluesky_error', true);
        $post_id = get_post_meta($post->ID, '_bluesky_post_id', true);

        require BLUESKY_CONNECTOR_DIR . 'templates/post-meta-box.php';
    }

    /**
     * Add settings link to plugins page
     *
     * @param array $links Plugin action links.
     * @return array Modified plugin action links.
     */
    public function add_settings_link($links)
    {
        $settings_link = sprintf(
            '<a href="%s">%s</a>',
            esc_url(admin_url('options-general.php?page=bluesky-settings')),
            esc_html__('Settings', 'bluesky-connctor')
        );

        array_unshift($links, $settings_link);
        return $links;
    }

    /**
     * Render settings page
     */
    public function render_settings_page()
    {
        if (!current_user_can('manage_options')) {
            return;
        }

        $settings = array(
            'identifier' => esc_html(get_option('bluesky_identifier', '')),
            'connection_status' => get_option('bluesky_connection_status', ''),
            'last_error' => esc_html(get_option('bluesky_last_error', ''))
        );

        require BLUESKY_CONNECTOR_DIR . 'templates/settings-page.php';
    }

    /**
     * Display admin notices
     */
    public function admin_notices()
    {
        if (!current_user_can('manage_options')) {
            return;
        }

        $screen = get_current_screen();
        if ($screen->id !== 'settings_page_bluesky-settings') {
            return;
        }

        settings_errors('bluesky_connector_settings');
    }

    /**
     * Plugin activation
     */
    public function activate()
    {
        // Create necessary options with default values
        add_option('bluesky_domain', BLUESKY_API_DOMAIN);
        add_option('bluesky_post_format', 'title-excerpt-link');

        // Ensure languages directory exists
        $languages_dir = dirname(plugin_basename(__FILE__)) . '/languages/';
        if (!file_exists($languages_dir)) {
            wp_mkdir_p($languages_dir);
        }

        // Clear any existing caches
        wp_cache_delete('bluesky_settings', 'options');
    }

    /**
     * Plugin deactivation
     */
    public function deactivate()
    {
        // Clean up transients and caches
        delete_transient('bluesky_auth_check');
        wp_cache_delete('bluesky_settings', 'options');

        // Log deactivation if in debug mode
        $this->log_error('Plugin deactivated');
    }
}

/**
 * Clean up plugin data
 * Used during uninstall
 */
function bluesky_connector_uninstall()
{
    if (!defined('WP_UNINSTALL_PLUGIN')) {
        return;
    }

    // Remove all plugin options
    $options = array(
        'bluesky_domain',
        'bluesky_identifier',
        'bluesky_password',
        'bluesky_access_jwt',
        'bluesky_refresh_jwt',
        'bluesky_did',
        'bluesky_post_queue',
        'bluesky_connection_status',
        'bluesky_last_error',
        'bluesky_post_format',
        'bluesky_connector_settings',
        'bluesky_token_created',
        'bluesky_last_post_time'
    );

    foreach ($options as $option) {
        delete_option($option);
    }

    // Remove all post meta
    $meta_keys = array(
        '_bluesky_posted',
        '_bluesky_status',
        '_bluesky_error',
        '_bluesky_post_id',
        '_bluesky_had_image'  // Added new meta key
    );

    // Get all posts
    $posts = get_posts(array(
        'posts_per_page' => -1,
        'post_type' => 'any',
        'fields' => 'ids'
    ));

    // Delete meta and clear cache for each post
    foreach ($posts as $post_id) {
        foreach ($meta_keys as $meta_key) {
            delete_post_meta($post_id, $meta_key);
        }
        clean_post_cache($post_id);
    }

    // Clear settings cache
    wp_cache_delete('bluesky_settings', 'options');
}

// Initialize plugin
function bluesky_connector_init()
{
    return Bluesky_Connector::get_instance();
}
add_action('plugins_loaded', 'bluesky_connector_init');

// Register uninstall hook
register_uninstall_hook(__FILE__, 'bluesky_connector_uninstall');