<?php

class Meow_MWAI_Admin extends MeowCommon_Admin {
  public $core;
  public $contentGeneratorEnabled;
  public $imagesGeneratorEnabled;
  public $playgroundEnabled;
  public $suggestionsEnabled;

  public function __construct( $core ) {
    $this->core = $core;
    parent::__construct( MWAI_PREFIX, MWAI_ENTRY, MWAI_DOMAIN, class_exists( 'MeowPro_MWAI_Core' ) );
    if ( is_admin() ) {
      $this->contentGeneratorEnabled = $this->core->get_option( 'module_generator_content' );
      $this->imagesGeneratorEnabled = $this->core->get_option( 'module_generator_images' );
      $this->playgroundEnabled = $this->core->get_option( 'module_playground' );
      $can_access_settings = $this->core->can_access_settings();
      $can_access_features = $this->core->can_access_features();

      if ( $can_access_settings || $can_access_features ) {
        add_action( 'admin_enqueue_scripts', [ $this, 'admin_enqueue_scripts' ] );
      }

      if ( $can_access_settings ) {
        add_action( 'admin_menu', [ $this, 'app_menu' ] );
      }

      if ( $can_access_features ) {
        add_action( 'admin_menu', [ $this, 'admin_menu' ] );

        // Only if the Suggestions are enabled.
        $this->suggestionsEnabled = $this->core->get_option( 'module_suggestions' );
        if ( $this->suggestionsEnabled ) {
          add_filter( 'post_row_actions', [ $this, 'post_row_actions' ], 10, 2 );
          add_filter( 'page_row_actions', [ $this, 'post_row_actions' ], 10, 2 );
        }

        if ( $this->imagesGeneratorEnabled ) {
          add_filter( 'media_row_actions', [ $this, 'media_row_actions' ], 10, 2 );
        }

        add_action( 'admin_footer', [ $this, 'admin_footer' ] );
      }
    }
  }

  public function admin_menu() {

    // Generate New (under Posts)
    if ( $this->contentGeneratorEnabled ) {
      add_submenu_page(
        'edit.php',
        'Generate New',
        'Generate New',
        'read',
        'mwai_content_generator',
        [ $this, 'ai_content_generator' ],
        2
      );
    }

    // In Tools
    if ( $this->playgroundEnabled ) {
      add_management_page(
        'Playground',
        __( 'Playground', 'ai-engine' ),
        'read',
        'mwai_dashboard',
        [ $this, 'ai_playground' ]
      );
    }
    if ( $this->contentGeneratorEnabled ) {
      add_management_page(
        'Generate Content',
        'Generate Content',
        'read',
        'mwai_content_generator',
        [ $this, 'ai_content_generator' ]
      );
    }
    if ( $this->imagesGeneratorEnabled ) {
      add_management_page(
        'Generate Images',
        'Generate Images',
        'read',
        'mwai_images_generator',
        [ $this, 'ai_image_generator' ]
      );
    }

    // In the Admin Bar:
    add_action( 'admin_bar_menu', [ $this, 'admin_bar_menu' ], 100 );
  }

  public function admin_bar_menu( $wp_admin_bar ) {

    $admin_bar = $this->core->get_option( 'admin_bar' );
    $settings = isset( $admin_bar['settings'] ) && $admin_bar['settings'];
    $playground = isset( $admin_bar['playground'] ) && $admin_bar['playground'];
    $content_generator = isset( $admin_bar['content_generator'] ) && $admin_bar['content_generator'];
    $images_generator = isset( $admin_bar['images_generator'] ) && $admin_bar['images_generator'];

    if ( $settings ) {
      $wp_admin_bar->add_node( [
        'id' => 'mwai-settings',
        'title' => '<span class="ab-icon dashicons-before dashicons-admin-settings" style="top: 2px;"></span>' . __( 'AI Engine', 'ai-engine' ),
        'href' => admin_url( 'admin.php?page=mwai_settings' ),
        'meta' => [ 'class' => 'mwai-settings' ],
      ] );
    }

    if ( $content_generator ) {
      $wp_admin_bar->add_node( [
        'id' => 'mwai-content-generator',
        'title' => MWAI_IMG_WAND_HTML . __( 'Content', 'ai-engine' ),
        'href' => admin_url( 'tools.php?page=mwai_content_generator' ),
        'meta' => [ 'class' => 'mwai-content-generator' ],
      ] );
    }
    if ( $images_generator ) {
      $wp_admin_bar->add_node( [
        'id' => 'mwai-image-generator',
        'title' => MWAI_IMG_WAND_HTML . __( 'Images', 'ai-engine' ),
        'href' => admin_url( 'tools.php?page=mwai_images_generator' ),
        'meta' => [ 'class' => 'mwai-images-generator' ],
      ] );
    }

    // The Global Magic Wand
    // if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) {
    //   $wp_admin_bar->add_node( array(
    //     'id' => 'mwai-debug',
    //     'title' => MWAI_IMG_WAND_HTML . __( 'Magic Wand', 'ai-engine' ),
    //     //'href' => admin_url( 'tools.php?page=mwai_debug' ),
    //     'meta' => array( 'class' => 'mwai-debug' ),
    //   ) );
    // }

    if ( $playground ) {
      $wp_admin_bar->add_node( [
        'id' => 'mwai-playground',
        'title' => MWAI_IMG_WAND_HTML . __( 'Playground', 'ai-engine' ),
        'href' => admin_url( 'tools.php?page=mwai_dashboard' ),
        'meta' => [ 'class' => 'mwai-playground' ],
      ] );
    }
  }

  public function ai_playground() {
    echo '<div id="mwai-playground"></div>';
  }

  public function ai_content_generator() {
    echo '<div id="mwai-content-generator"></div>';
  }

  public function ai_image_generator() {
    echo '<div id="mwai-image-generator"></div>';
  }

  public function post_row_actions( $actions, $post ) {
    $actions['ai_magic_wand'] = '<span class="mwai-magic-wand-action" data-id="' . $post->ID . '" data-title="' . esc_attr( $post->post_title ) . '">
      <a href="#" class="mwai-magic-wand-trigger">' . MWAI_IMG_WAND_HTML_XS . ' ' . __( 'Magic Wand', 'ai-engine' ) . '</a>
      <div class="mwai-magic-wand-dropdown" style="display: none;">
        <a class="mwai-link-title" href="#" data-id="' . $post->ID . '" data-title="' . esc_attr( $post->post_title ) . '">
          <span class="dashicons dashicons-edit" style="font-size: 14px; line-height: 1.4; margin-right: 4px; pointer-events: none;"></span>' . __( 'Generate Title', 'ai-engine' ) . '
        </a>
        <a class="mwai-link-excerpt" href="#" data-id="' . $post->ID . '" data-title="' . esc_attr( $post->post_title ) . '">
          <span class="dashicons dashicons-text" style="font-size: 14px; line-height: 1.4; margin-right: 4px; pointer-events: none;"></span>' . __( 'Generate Excerpt', 'ai-engine' ) . '
        </a>
      </div>
    </span>';
    return $actions;
  }

  public function media_row_actions( $actions, $post ) {
    if ( strpos( $post->post_mime_type, 'image/' ) === 0 ) {
      $url = admin_url( 'tools.php?page=mwai_images_generator&editId=' . $post->ID );
      $actions['mwai_remix'] = '<a href="' . $url . '">' . MWAI_IMG_WAND_HTML_XS . ' ' . __( 'Edit', 'ai-engine' ) . '</a>';
    }
    return $actions;
  }

  public function admin_footer() {
    // Don't add our admin footer div on the Site Editor
    $current_screen = get_current_screen();
    if ( $current_screen && $current_screen->base === 'site-editor' ) {
      return;
    }
    echo '<div id="mwai-admin-postsList"></div>';
    
    // Add CSS for Magic Wand dropdown
    ?>
    <style>
      .mwai-magic-wand-action {
        position: relative;
        display: inline-block;
      }
      
      .mwai-magic-wand-trigger {
        text-decoration: none;
      }
      
      .mwai-magic-wand-dropdown {
        position: absolute;
        top: 100%;
        left: 0;
        background: #fff;
        border: 1px solid #c3c4c7;
        border-radius: 4px;
        box-shadow: 0 2px 5px rgba(0,0,0,0.15);
        min-width: 150px;
        z-index: 1000;
        margin-top: 4px;
      }
      
      .mwai-magic-wand-dropdown a {
        display: flex;
        align-items: center;
        padding: 8px 12px;
        text-decoration: none;
        color: #2271b1;
        border-bottom: 1px solid #f0f0f1;
        white-space: nowrap;
      }
      
      .mwai-magic-wand-dropdown a .dashicons {
        width: 16px;
        height: 16px;
        font-size: 14px;
      }
      
      .mwai-magic-wand-dropdown a:last-child {
        border-bottom: none;
      }
      
      .mwai-magic-wand-dropdown a:hover {
        background: #f0f6fc;
        color: #135e96;
      }
      
      /* Ensure dropdown stays visible when hovering over it */
      .mwai-magic-wand-action:hover .mwai-magic-wand-dropdown {
        display: block !important;
      }
    </style>
    <?php
  }

  public function admin_enqueue_scripts() {
    // Don't load our scripts on the Site Editor to avoid conflicts
    $current_screen = get_current_screen();
    if ( $current_screen && $current_screen->base === 'site-editor' ) {
      return;
    }

    $physical_file = MWAI_PATH . '/app/index.js';
    $cache_buster = file_exists( $physical_file ) ? filemtime( $physical_file ) : MWAI_VERSION;
    
    // Cache override: Force cache refresh when ?mwai_cache=1 is in URL
    if ( isset( $_GET['mwai_cache'] ) ) {
      $cache_buster = time(); // Use current timestamp for guaranteed cache bust
    }
    
    wp_register_script( 'mwai-vendor', MWAI_URL . 'app/vendor.js', null, $cache_buster );

    // Base dependencies
    $deps = [ 'mwai-vendor', 'wp-element', 'wp-components', 'wp-plugins', 'wp-i18n' ];

    // Check if we're on AI Engine admin pages
    $is_ai_engine_page = $current_screen && (
      strpos( $current_screen->id, 'mwai_settings' ) !== false ||
      strpos( $current_screen->id, 'meowapps_page_mwai' ) !== false ||
      $current_screen->id === 'meowapps_page_mwai_settings' ||
      $current_screen->id === 'meowapps_page_mwai-ui' ||
      strpos( $current_screen->id, 'meowapps' ) !== false && strpos( $_GET['page'] ?? '', 'mwai' ) !== false
    );

    // Only add wp-edit-post on actual post/page editor screens, not on AI Engine admin pages
    $is_post_editor = $current_screen && in_array( $current_screen->base, [ 'post', 'page' ] );
    if ( $is_post_editor ) {
      $deps[] = 'wp-edit-post';
    }

    // Load block editor deps if:
    // 1. We're on AI Engine admin pages (Forms.js component is always imported by Settings.js) OR
    // 2. We are on a block editor screen (Edit Post)
    $forms_module_enabled = $this->core->get_option( 'module_forms' );
    $load_forms_editor = $forms_module_enabled && $this->core->get_option( 'forms_editor' );
    $on_block_editor = function_exists( 'wp_should_load_block_editor_scripts_and_styles' ) && wp_should_load_block_editor_scripts_and_styles();

    // Always load block editor deps on AI Engine admin pages because Forms.js is always imported
    if ( $is_ai_engine_page || $on_block_editor ) {
      $deps = array_merge( $deps, [ 'wp-blocks', 'wp-block-editor', 'wp-format-library', 'wp-block-library', 'wp-editor' ] );
    }

    wp_register_script( 'mwai', MWAI_URL . 'app/index.js', $deps, $cache_buster );
    wp_enqueue_script( 'mwai' );

    // Ensure core editor styles are available for embedded block editor UIs
    // This helps Popovers, Inspector, and toolbars match Gutenberg styling
    if ( function_exists( 'wp_enqueue_style' ) ) {
      // Only load wp-edit-post styles on actual post/page editor screens
      if ( $is_post_editor ) {
        @wp_enqueue_style( 'wp-edit-post' );
      }
      @wp_enqueue_style( 'wp-components' );

      // Load block editor styles if we're on AI Engine pages or on block editor
      if ( $is_ai_engine_page || $on_block_editor ) {
        @wp_enqueue_style( 'wp-block-editor' );
        @wp_enqueue_style( 'wp-block-library' );
      }
    }
    // Make sure core blocks and format tools are registered/available
    if ( function_exists( 'wp_enqueue_script' ) ) {
      if ( $is_ai_engine_page || $on_block_editor ) {
        @wp_enqueue_script( 'wp-format-library' );
        @wp_enqueue_script( 'wp-block-library' );
        @wp_enqueue_script( 'wp-editor' );
      }
    }

    // The MD5 of the translation file built by WP uses app/i18n.js instead of app/index.js
    add_filter( 'load_script_translation_file', function ( $file, $handle, $domain ) {
      if ( $domain !== 'ai-engine' ) {
        return $file;
      }
      $file = str_replace( md5( 'app/index.js' ), md5( 'app/i18n.js' ), $file );
      return $file;
    }, 10, 3 );

    // This is useless for AI Engine, but it avoids issues when themes and plugin calls
    // wp_enqueue_media too late (usually, they call it in the footer). Until someone
    // figures out what the issue is, let's load it here.
    wp_enqueue_media();

    wp_set_script_translations( 'mwai', 'ai-engine' );

    // Prepare localization data
    $localize_data = [
      'api_url' => get_rest_url( null, 'mwai/v1' ),
      'rest_url' => get_rest_url(),
      'plugin_url' => MWAI_URL,
      'user_data' => $this->core->get_user_data(),
      'prefix' => MWAI_PREFIX,
      'domain' => MWAI_DOMAIN,
      'is_pro' => class_exists( 'MeowPro_MWAI_Core' ),
      'is_registered' => !!$this->is_registered(),
      'rest_nonce' => wp_create_nonce( 'wp_rest' ),
      'session' => $this->core->get_session_id(),
      'options' => $this->core->get_all_options(),
      'chatbots' => $this->core->get_chatbots(),
      'themes' => $this->core->get_themes(),
      'stream' => $this->core->get_option( 'ai_streaming' ),
      'cache_buster' => $cache_buster, // Pass cache buster for lazy-loaded chunks
    ];

    wp_localize_script( 'mwai', 'mwai', $localize_data );
  }

  public function is_registered() {
    return apply_filters( MWAI_PREFIX . '_meowapps_is_registered', false, MWAI_PREFIX );
  }

  public function app_menu() {
    add_submenu_page(
      'meowapps-main-menu',
      'AI Engine',
      'AI Engine',
      'manage_options',
      'mwai_settings',
      [ $this, 'admin_settings' ]
    );
  }

  public function admin_settings() {
    echo '<div id="mwai-admin-settings"></div>';
  }
}
