wpckan.php

<?php
/**
 * Plugin Name: wpckan
 * Plugin URI: http://www.lifeformapps.com/portfolio/wpckan/
 * Description: wpckan is a wordpress plugin that exposes a series of functionalities to bring content stored in CKAN to Wordpress' UI and also provide mechanisms for archiving content generated on Wordpress into a CKAN instance.
 * Version: 3.0.2
 * Author: Alex Corbi (mail@lifeformapps.com)
 * Author URI: http://www.lifeformapps.com
 * License: GPLv3
 */
 require 'vendor/autoload.php';
 include_once plugin_dir_path(__FILE__).'widgets/related-datasets-widget.php';
 include_once plugin_dir_path(__FILE__).'widgets/query-resources-widget.php';
 include_once plugin_dir_path(__FILE__).'widgets/query-resources-by-category-widget.php';
 include_once plugin_dir_path(__FILE__).'utils/wpckan-exceptions.php';
 include_once plugin_dir_path(__FILE__).'utils/wpckan-utils.php';
 include_once plugin_dir_path(__FILE__).'utils/datastore-api.php';
 include_once plugin_dir_path(__FILE__).'utils/wpckan-api.php';
 include_once plugin_dir_path(__FILE__).'utils/wpckan-options.php';
 use Doctrine\Common\Cache\RedisCache;

 $GLOBALS['wpckan_options'] = new Wpckan_Options();

 $cache_path = $GLOBALS['wpckan_options']->get_option('wpckan_setting_cache_path');
 $cache_time = $GLOBALS['wpckan_options']->get_option('wpckan_setting_cache_time');
 if (defined('WP_REDIS_CACHE_HOST')){
     $redis = new Redis();
     $redis->pconnect(WP_REDIS_CACHE_HOST, WP_REDIS_CACHE_PORT);
     $cache = new RedisCache();
     $cache->setRedis($redis);
     $GLOBALS['cache'] = $cache;
     $GLOBALS['cache_time'] = $cache_time;
 }

if (!class_exists('wpckan')) {
    class wpckan
    {
        /**
         * Construct the plugin object.
         */
        public function __construct()
        {
          add_action('admin_init', array(&$this, 'wpckan_admin_init'));
          add_action('admin_menu', array(&$this, 'wpckan_add_menu'));
          add_action('init', array(&$this, 'wpckan_register_plugin_styles'));
					add_action('init', array(&$this, 'wpckan_register_plugin_scripts'));
          add_action('edit_post', array(&$this, 'wpckan_edit_post'));
          add_action('save_post', array(&$this, 'wpckan_save_post'));
          add_action('add_meta_boxes', array(&$this, 'wpckan_add_meta_boxes'));
          add_shortcode('wpckan_related_datasets', array(&$this, 'wpckan_do_shortcode_get_related_datasets'));
          add_shortcode('wpckan_number_of_related_datasets', array(&$this, 'wpckan_do_shortcode_get_number_of_related_datasets'));
          add_shortcode('wpckan_query_datasets', array(&$this, 'wpckan_do_shortcode_query_datasets'));
          add_shortcode('wpckan_number_of_query_datasets', array(&$this, 'wpckan_do_shortcode_get_number_of_query_datasets'));
          add_shortcode('wpckan_dataset_detail', array(&$this, 'wpckan_do_shortcode_dataset_detail'));
          add_action('admin_notices', array($this, 'check_requirements'));
          add_action('admin_notices', array($this, 'check_requirements_log'));
          add_action('init', array($this, 'load_text_domain'));
        }

        public function load_text_domain()
        {
          load_plugin_textdomain( 'wpckan', false,  dirname( plugin_basename( __FILE__ ) ) . '/i18n' );
        }

        function check_requirements(){
          if (!wpckan_validate_settings_read()):
            echo '<div class="error"><p>WPCKAN: Ckan API seems to be unresponsive or missconfigured, please check.</p></div>';
          endif;
        }

        function check_requirements_log(){
          if (!wpckan_validate_settings_log()):
            echo '<div class="error"><p>WPCKAN: Logging information seems to be incorrect, please check.</p></div>';
          endif;
        }

        public function wpckan_register_plugin_styles($hook)
        {
          wpckan_log('wpckan_register_plugin_styles');

					wp_register_style('wpckan_css', plugin_dir_url(__FILE__) . 'css/wpckan_style.css');
          wp_enqueue_style('wpckan_css');

					wp_register_style('metadata_dropdown_css', plugin_dir_url(__FILE__) . 'css/metadata_dropdown.css');
          wp_enqueue_style('metadata_dropdown_css');
        }

				public function wpckan_register_plugin_scripts($hook)
        {
          wpckan_log('wpckan_register_plugin_scripts');

					wp_register_script('metadata_dropdown_js', plugins_url('wpckan/js/metadata_dropdown.js'), array('jquery'));
					wp_enqueue_script('metadata_dropdown_js');

					wp_register_script('template_dropdown_js', plugins_url('wpckan/js/template_dropdown.js'), array('jquery'));
					wp_enqueue_script('template_dropdown_js');
        }

        public function wpckan_do_shortcode_get_related_datasets($atts)
        {
          wpckan_log('wpckan_do_shortcode_get_related_datasets: '.print_r($atts, true));

          if (!wpckan_validate_settings_read()) {
            return;
          }

          $atts['post_id'] = get_the_ID();

          return wpckan_show_related_datasets($atts);
        }

        public function wpckan_do_shortcode_get_number_of_related_datasets($atts)
        {
          wpckan_log('wpckan_do_shortcode_get_number_of_related_datasets: '.print_r($atts, true));

          if (!wpckan_validate_settings_read()) {
            return;
          }

          $atts['post_id'] = get_the_ID();

          return wpckan_show_number_of_related_datasets($atts);
        }

        public function wpckan_do_shortcode_query_datasets($atts)
        {
          wpckan_log('wpckan_do_query_related_datasets: '.print_r($atts, true));

          if (!wpckan_validate_settings_read()) {
            die;
          }

          return wpckan_show_query_datasets($atts);
        }

        public function wpckan_do_shortcode_get_number_of_query_datasets($atts)
        {
          wpckan_log('wpckan_do_shortcode_get_number_of_query_datasets: '.print_r($atts, true));

          if (!wpckan_validate_settings_read()) {
            return;
          }

          $atts['post_id'] = get_the_ID();

          return wpckan_show_number_of_query_datasets($atts);
        }

        public function wpckan_do_shortcode_dataset_detail($atts)
        {
          wpckan_log('wpckan_do_shortcode_dataset_detail: '.print_r($atts, true));

          if (!wpckan_validate_settings_read()) {
            die;
          }

          return wpckan_show_dataset_detail($atts);
        }

        public function wpckan_add_meta_boxes($post_type)
        {
          wpckan_log('wpckan_add_meta_boxes: '.$post_type.' '.print_r(get_post_types(), true));

          $post_types = apply_filters('wpckan_filter_post_types', get_post_types());
          if (in_array($post_type, $post_types) && wpckan_is_supported_post_type($post_type)) {
            add_meta_box('wpckan_add_related_datasets', __('Add related CKAN content', 'wpckan_add_related_datasets_title'), array(&$this, 'wpckan_render_dataset_meta_box'), $post_type, 'side', 'high');
            add_meta_box('wpckan_archive_post', __('Archive Post as CKAN dataset', 'wpckan_archive_post_title'), array(&$this, 'wpckan_render_archive_post_meta_box'), $post_type, 'side', 'high');
          }

          wp_register_script('wpckan_bloodhound', plugins_url('wpckan/vendor/twitter/typeahead.js/dist/bloodhound.min.js'), array('jquery'));
          wp_enqueue_script('wpckan_bloodhound');
          wp_register_script('wpckan_typeahead', plugins_url('wpckan/vendor/twitter/typeahead.js/dist/typeahead.jquery.js'), array('jquery'));
          wp_enqueue_script('wpckan_typeahead');
          wp_register_script('wpckan_js', plugins_url('wpckan/js/wpckan_metabox_logic.js'), array('jquery'));
          wp_enqueue_script('wpckan_js');
        }

        public function wpckan_render_dataset_meta_box($post)
        {
          wpckan_log('wpckan_render_dataset_meta_box: '.print_r($post, true));

          wp_nonce_field('wpckan_add_related_datasets', 'wpckan_add_related_datasets_nonce');
          $related_datasets_json = get_post_meta($post->ID, 'wpckan_related_datasets', true);
          $related_datasets = array();
          if (!wpckan_is_null_or_empty_string($related_datasets_json)) {
            $related_datasets = json_decode($related_datasets_json, true);
          }

          //We do not use wpckan_output_template here, just require.
          require 'templates/related-datasets-metabox.php';
        }

        public function wpckan_render_archive_post_meta_box($post)
        {
          wpckan_log('wpckan_render_archive_post_meta_box: '.print_r($post, true));

          wp_nonce_field('wpckan_archive_post', 'wpckan_archive_post_nonce');
          $archive_orga = get_post_meta($post->ID, 'wpckan_archive_post_orga', true);
          $archive_group = get_post_meta($post->ID, 'wpckan_archive_post_group', true);
          $archive_freq = get_post_meta($post->ID, 'wpckan_archive_post_freq', true);

          //We do not use wpckan_output_template here, just require.
          require 'templates/archive-post-metabox.php';
        }

        public function wpckan_save_post($post_ID)
        {
          wpckan_log('wpckan_save_post: '.$post_ID);

          wpckan_edit_post_logic_dataset_metabox($post_ID);
          wpckan_edit_post_logic_archive_post_metabox($post_ID);
        }

        public function wpckan_edit_post($post_ID)
        {
          wpckan_log('wpckan_edit_post: '.$post_ID);

          // If this is an autosave, our form has not been submitted,
          //     so we don't want to do anything.
          if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {
            return $post_ID;
          }

          // Check the user's permissions.
          if (isset($_POST['post_type']) && 'page' == $_POST['post_type']) {
            if (!current_user_can('edit_page', $post_ID)) {
              return $post_ID;
            }
          } else {
            if (!current_user_can('edit_post', $post_ID)) {
              return $post_ID;
            }
          }

          wpckan_edit_post_logic_dataset_metabox($post_ID);
          wpckan_edit_post_logic_archive_post_metabox($post_ID);
        }

        /**
         * Activate the plugin.
         */
        public static function activate()
        {
          // Do nothing
          wpckan_log('wpckan plugin activated');
        }

        /**
         * Deactivate the plugin.
         */
        public static function deactivate()
        {
          // Do nothing
          wpckan_log('wpckan plugin deactivated');
        }

        /**
         * hook into WP's admin_init action hook.
         */
        public function wpckan_admin_init()
        {
          $this->init_settings();
        }

        /**
         * Initialize some custom settings.
         */
        public function init_settings()
        {
          register_setting('wpckan-group', 'wpckan_setting_ckan_url', 'wpckan_sanitize_url');
          register_setting('wpckan-group', 'wpckan_setting_ckan_api');
          register_setting('wpckan-group', 'wpckan_setting_archive_freq');
          register_setting('wpckan-group', 'wpckan_setting_ckan_organization');
          register_setting('wpckan-group', 'wpckan_setting_ckan_group');
          register_setting('wpckan-group', 'wpckan_setting_ckan_valid_settings_read');
          register_setting('wpckan-group', 'wpckan_setting_ckan_valid_settings_write');
          register_setting('wpckan-group', 'wpckan_setting_log_path');
          register_setting('wpckan-group', 'wpckan_setting_log_enabled');
          register_setting('wpckan-group', 'wpckan_setting_cache_path');
          register_setting('wpckan-group', 'wpckan_setting_cache_time');
          register_setting('wpckan-group', 'wpckan_setting_cache_enabled');
          register_setting('wpckan-group', 'wpckan_setting_supported_fields', 'wpckan_remove_whitespaces');
          register_setting('wpckan-group', 'wpckan_setting_supported_fields_additional', 'wpckan_remove_whitespaces');
					register_setting('wpckan-group', 'wpckan_setting_field_mappings');
          register_setting('wpckan-group', 'wpckan_setting_field_mappings_values');
          register_setting('wpckan-group', 'wpckan_setting_supported_datatables');
          register_setting('wpckan-group', 'wpckan_setting_linked_fields', 'wpckan_remove_whitespaces');
          register_setting('wpckan-group', 'wpckan_setting_redirect_enabled');
          register_setting('wpckan-group', 'wpckan_setting_target_blank_enabled');

          foreach (get_post_types() as $post_type) {
            $settings_name = 'setting_supported_post_types_'.$post_type;
            register_setting('wpckan-group', $settings_name);
          }
        }

        /**
         * add a menu.
         */
        public function wpckan_add_menu()
        {
          add_options_page('WPCKAN Settings', 'wpckan', 'manage_options', 'wpckan', array(&$this, 'plugin_settings_page'));
        }

        /**
         * Menu Callback.
         */
        public function plugin_settings_page()
        {
          if (!current_user_can('manage_options')) {
            wp_die(__('You do not have sufficient permissions to access this page.'));
          }

          include sprintf('%s/templates/settings.php', dirname(__FILE__));
        }
    }
}

if (class_exists('wpckan')) {

  // Installation and uninstallation hooks
  register_activation_hook(__FILE__, array('wpckan', 'activate'));
  register_deactivation_hook(__FILE__, array('wpckan', 'deactivate'));

  // instantiate the plugin class
  $wpckan = new wpckan();

  // Add a link to the settings page onto the plugin page
  if (isset($wpckan)) {
    // Add the settings link to the plugins page
    function wpckan_plugin_settings_link($links)
    {
      $settings_link = '<a href="options-general.php?page=wpckan">Settings</a>';
      array_unshift($links, $settings_link);

      return $links;
    }

    $plugin = plugin_basename(__FILE__);
    add_filter("plugin_action_links_$plugin", 'wpckan_plugin_settings_link');
  }
}