<?php if(!defined('ABSPATH')) { die('You are not allowed to call this page directly.'); }

class PlpPostsController extends PrliBaseController {
  public function load_hooks() {
    add_filter('the_content', array($this, 'run_autocreate'), 9); //This priority should be lower than social button bars
    add_action('save_post', array($this,'save_postdata'), 10, 3); // Manual update post
    add_action('transition_post_status', array($this,'transition_post_status'), 10, 3); // Publishing Scheduled content, etc.
    add_action('xmlrpc_publish_post', array($this,'xmlrpc_publish_post'), 10, 1); // Publishing Via XML-RPC
    add_action('wp_enqueue_scripts', array($this,'enqueue_scripts'));
    add_shortcode('post-pretty-link', array($this,'get_pretty_link'));

    //This trim_empty_replacement_rows can go at some point in the future after we think everyone has upgraded to 2.0.0+
    //This is an attempt to boost some query performance on keyword/url replacements
    add_action('admin_init', array($this, 'trim_empty_replacement_rows'));

    add_action('prli_sidebar_meta_box', array($this, 'render_meta_box'));
  }

  public function enqueue_scripts() {
    global $post, $plp_options;

    if(!isset($post) || !$post instanceof WP_Post || !isset($post->post_type)) { return; }

    $ac = $plp_options->autocreate_option($post->post_type);

    if($ac->enabled && $ac->socbtns) {
      wp_enqueue_style('prli-fontello-animation',
                       PRLI_VENDOR_LIB_URL.'/fontello/css/animation.css',
                       array(), PRLI_VERSION);
      wp_enqueue_style('prli-fontello-pretty-link',
                       PRLI_VENDOR_LIB_URL.'/fontello/css/pretty-link.css',
                       array('prli-fontello-animation'), PRLI_VERSION);
      wp_enqueue_style('prlipro-post', PLP_CSS_URL . '/prlipro-post.css');
      wp_enqueue_style('prlipro-social', PRLI_CSS_URL . '/social_buttons.css', array('prli-fontello-animation','prli-fontello-pretty-link'));
    }
  }

  /**
   * Renders the Pro-related content for the "Pretty Links" metabox on the post screens.
   *
   * @access public
   * @return void
   */
  public function render_meta_box() {
    global $post, $prli_blogurl, $plp_options, $prli_link, $prli_link_meta;

    $plp_post_options = PlpPostOptions::get_options($post->ID);
    $ac = $plp_options->autocreate_option($post->post_type);
    $post_types = $plp_options->get_post_types();
    $allowed_keyword_cpts = $plp_options->keyword_replacement_cpts;
    $allowed_url_cpts = $plp_options->url_replacement_cpts;

    require(PLP_VIEWS_PATH . '/metaboxes/post-sidebar.php');
  }

  public function transition_post_status($new_status, $old_status, $post) {
    if($old_status != $new_status && $new_status == 'publish') {
      $this->publish_post($post->ID, 'auto');
    }
  }

  public function xmlrpc_publish_post($post_id) {
    $this->publish_post($post_id, 'auto');
  }

  public function publish_post($post_id, $type = 'manual') {
    $post = get_post($post_id);
    $this->save_postdata($post_id, $post, false, $type);
    $permalink = get_permalink($post_id); //Not sure what this is for?
  }

  public function save_postdata($post_id, $post, $update, $type = 'manual') {
    global $plp_options, $plp_keyword;

    if(defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {
      return $post_id;
    }

    if(defined('DOING_AJAX')) {
      $type = 'auto';
    }

    if(!$post_id || !isset($post->ID) || !$post->ID) { return $post_id; }

    if(!current_user_can('edit_post', $post_id) && $type != 'auto') { return $post_id; }

    // Make sure a nonce is set so we don't wipe these options out when the post is being bulk edited
    if(!wp_verify_nonce((isset($_POST['plp_nonce']))?$_POST['plp_nonce']:'', 'plp_nonce'.wp_salt())) { return $post_id; }

    $ac = $plp_options->autocreate_option($post->post_type);
    $plp_post_options = PlpPostOptions::get_options($post_id);
    $plp_post_options->requested_slug = isset($_REQUEST['prli_req_slug']) && is_string($_REQUEST['prli_req_slug'])?sanitize_text_field(stripslashes($_REQUEST['prli_req_slug'])):$plp_post_options->requested_slug;

    $plp_post_options->hide_social_buttons           = isset($_REQUEST['hide_social_buttons']);
    $plp_post_options->disable_keyword_replacements  = isset($_REQUEST['disable_keyword_replacements']);
    $plp_post_options->disable_url_replacements      = isset($_REQUEST['disable_url_replacements']);

    $plp_post_options->store($post_id);

    $this->auto_create_pretty_link($post_id, $post);

    // Delete all the post keywords for this link to be rebuilt by our wp-cron task
    $plp_keyword->delete_post_keywords_by_post_id($post_id);

    delete_post_meta($post_id, '_plp_post_keywords_updated_at');
    delete_post_meta($post_id, '_plp_post_urls_updated_at');
  }

  public function auto_create_pretty_link($post_id, $post) {
    global $plp_options, $prli_link, $prli_utils, $plp_options, $prli_link_meta;

    $ac = $plp_options->autocreate_option($post->post_type);

    if(!$ac->enabled) { return; }

    if($post && $post->post_status == "publish") {
      $plp_post_options = PlpPostOptions::get_options($post_id);

      $pretty_link_id = PrliUtils::get_prli_post_meta($post_id,"_pretty-link",true);

      $new_link = false;
      // Try to find a pretty link that is using this link already
      if(!$pretty_link_id) {
        $new_link = true;
        $pretty_link_id = $prli_link->find_first_target_url(get_permalink($post_id));
      }

      $pretty_link = $prli_link->getOne($pretty_link_id);

      if(empty($pretty_link) || !$pretty_link) {
        $slug_available = $prli_utils->is_slug_available($plp_post_options->requested_slug);

        $slug = (is_wp_error($slug_available) ? '' : $plp_post_options->requested_slug);

        $pl_insert_id = prli_create_pretty_link( get_permalink($post_id),
                                                 $slug, // slug should be default?
                                                 !empty($post->post_title) ? addslashes($post->post_title) : __('Untitled', 'pretty-link'),
                                                 addslashes($post->post_excerpt)
                                               );

        $new_pretty_link = $prli_link->getOne($pl_insert_id);

        if(isset($post->ID) && !empty($post->ID) && $post->ID) {
          PrliUtils::update_prli_post_meta($post->ID,'_pretty-link',$new_pretty_link->id,true);
        }

        $link_cpt_id = $new_pretty_link->link_cpt_id;
      }
      else {
        prli_update_pretty_link( $pretty_link_id,
                                 get_permalink($post_id),
                                 $pretty_link->slug,
                                 !empty($post->post_title) ? addslashes($post->post_title) : __('Untitled', 'pretty-link'),
                                 addslashes($post->post_excerpt)
                               );

        // Still update the post meta
        if(isset($post_id) && !empty($post_id) && $post_id) {
          PrliUtils::update_prli_post_meta($post_id,'_pretty-link',$pretty_link_id,true);
        }

        $link_cpt_id = $pretty_link->link_cpt_id;
      }

      if ($ac->category) {
        wp_set_object_terms($link_cpt_id, $ac->category, PlpLinkCategoriesController::$ctax);
      }
    }
  }

  // shortcode for displaying the pretty link for the post/page
  public function get_pretty_link() {
    global $post, $plp_options, $prli_blogurl, $prli_link, $wp_query, $prli_link_meta;

    $ac = $plp_options->autocreate_option($post->post_type);

    // Don't show until published
    if($post->post_status != 'publish' ||
       // only show button if enabled and links are being generated
       ((is_single() || is_archive() || $wp_query->is_posts_page) && !$ac->enabled)) {
      return '';
    }

    $pretty_link_id = PrliUtils::get_prli_post_meta($post->ID,"_pretty-link",true);
    $pretty_link = $prli_link->getOne($pretty_link_id);

    if(empty($pretty_link)) {
      return '';
    }

    $shorturl = $prli_blogurl.PrliUtils::get_permalink_pre_slug_uri().$pretty_link->slug;

    return $shorturl;
  }

  //This trim_empty_replacement_rows can go at some point in the future after we think everyone has upgraded to 2.0.0+
  //This is an attempt to boost some query performance on keyword/url replacements
  public function trim_empty_replacement_rows() {
    global $wpdb, $prli_link_meta, $plp_keyword;

    //This only ever needs to be run once, since I fixed the code that was causing the blank rows in the first place
    if(!get_option('prli_empty_replacement_rows_cleanup', false)) {
      $wpdb->query("DELETE FROM {$plp_keyword->table_name} WHERE text IS NULL OR text = ''");
      $wpdb->query("DELETE FROM {$prli_link_meta->table_name} WHERE meta_key = 'prli-url-replacements' AND (meta_value IS NULL OR meta_value = '')");
      update_option('prli_empty_replacement_rows_cleanup', true);
      wp_cache_delete('alloptions', 'options');
    }
  }

  //Should move this to WP CRON at some point and have this done in batches, instead of one at a time via the_content like it is currently happening
  public function run_autocreate($content = '') {
    global $post, $prli_utils, $prli_link, $prli_link_meta, $plp_options;

    //No post object or type or published status?
    if(!isset($post) || !$post instanceof WP_Post || (int)$post->ID <= 0 || !isset($post->post_type) || $post->post_status != "publish" || defined('REST_REQUEST')) {
      return $content;
    }

    $ac = $plp_options->autocreate_option($post->post_type);

    if($ac->enabled) {
      $plp_post_options = PlpPostOptions::get_options($post->ID);
      $pretty_link_id = PrliUtils::get_prli_post_meta($post->ID, '_pretty-link', true);

      // Try to find a pretty link that is using this link already
      if(!$pretty_link_id) {
        $pretty_link_id = $prli_link->find_first_target_url(get_permalink($post->ID));
      }

      $pretty_link = $prli_link->getOne($pretty_link_id);

      if(empty($pretty_link) or !$pretty_link) {
        $slug_available = $prli_utils->is_slug_available($plp_post_options->requested_slug);

        $slug = (is_wp_error($slug_available) ? '' : $plp_post_options->requested_slug);

        $pl_insert_id = prli_create_pretty_link(
                          get_permalink($post->ID),
                          $slug,
                          !empty($post->post_title) ? addslashes($post->post_title) : __('Untitled', 'pretty-link'),
                          addslashes($post->post_excerpt)
                        );

        if(!empty($pl_insert_id)) {
          $new_pretty_link = $prli_link->getOne($pl_insert_id);

          if(is_object($new_pretty_link) && !empty($new_pretty_link->id)) {
            PrliUtils::update_prli_post_meta($post->ID, '_pretty-link', $new_pretty_link->id);

            if($ac->category && !empty($new_pretty_link->link_cpt_id)) {
              wp_set_object_terms($new_pretty_link->link_cpt_id, $ac->category, PlpLinkCategoriesController::$ctax);
            }
          }
        }
      }
    }

    return $content;
  }
} //End Class

// Template Tag for displaying the pretty link for the post/page
function the_prettylink() {
  $ctrl = new PlpPostsController();
  echo $ctrl->get_pretty_link();
}
