<?php

/**
 * The admin-specific functionality of the plugin.
 *
 * @link       https://wordpress.org/plugins/fg-spip-to-wp/
 * @since      1.0.0
 *
 * @package    FG_Spip_to_WordPress
 * @subpackage FG_Spip_to_WordPress/admin
 */

if ( !class_exists('FG_Spip_to_WordPress_Admin', false) ) {

	define('_RACCOURCI_TH_SPAN', '\s*(:?{{[^{}]+}}\s*)?|<'); // Pattern for table shortcodes replacement
	
	/**
	 * The admin-specific functionality of the plugin.
	 *
	 * @package    FG_Spip_to_WordPress
	 * @subpackage FG_Spip_to_WordPress/admin
	 * @author     Frédéric GILLES
	 */
	class FG_Spip_to_WordPress_Admin extends WP_Importer {

		const IMPORT_TIMEOUT = 7200; // Timeout = 2 hours

		/**
		 * The ID of this plugin.
		 *
		 * @since    1.0.0
		 * @access   private
		 * @var      string    $plugin_name    The ID of this plugin.
		 */
		private $plugin_name;

		/**
		 * The version of this plugin.
		 *
		 * @since    1.0.0
		 * @access   private
		 * @var      string    $version    The current version of this plugin.
		 */
		private $version;

		public $spip_version;				// SPIP version
		public $spip_charset;				// SPIP characters set
		public $plugin_options;				// Plug-in options
		public $progressbar;
		public $imported_categories = array();
		public $chunks_size = 10;
		public $posts_count = 0;			// Number of imported posts
		public $pages_count = 0;			// Number of imported pages
		public $media_count = 0;			// Number of imported medias
		public $media_path;
		public $post_type = 'post';			// post or page

		protected $faq_url;					// URL of the FAQ page
		protected $notices = array();		// Error or success messages
		protected $cat_prefix = 'spip_cat_';
		
		private $log_file;
		private $log_file_url;
		private $test_antiduplicate = false;

		/**
		 * Initialize the class and set its properties.
		 *
		 * @since    1.0.0
		 * @param    string    $plugin_name       The name of this plugin.
		 * @param    string    $version           The version of this plugin.
		 */
		public function __construct( $plugin_name, $version ) {

			$this->plugin_name = $plugin_name;
			$this->version = $version;
			$this->faq_url = 'https://wordpress.org/plugins/fg-spip-to-wp/faq/';

			$upload_dir = wp_upload_dir();
			$this->log_file = $upload_dir['basedir'] . '/' . $this->plugin_name . '.logs';
			$this->log_file_url = $upload_dir['baseurl'] . '/' . $this->plugin_name . '.logs';
			// Replace the protocol if the WordPress address is wrong in the WordPress General settings
			if ( is_ssl() ) {
				$this->log_file_url = preg_replace('/^https?/', 'https', $this->log_file_url);
			}

			// Progress bar
			$this->progressbar = new FG_Spip_to_WordPress_ProgressBar($this);
		}

		/**
		 * The name of the plugin used to uniquely identify it within the context of
		 * WordPress and to define internationalization functionality.
		 *
		 * @since     1.0.0
		 * @return    string    The name of the plugin.
		 */
		public function get_plugin_name() {
			return $this->plugin_name;
		}

		/**
		 * Register the stylesheets for the admin area.
		 *
		 * @since    1.0.0
		 */
		public function enqueue_styles() {

			wp_enqueue_style( $this->plugin_name, plugin_dir_url( __FILE__ ) . 'css/fg-spip-to-wp-admin.css', array(), $this->version, 'all' );

		}

		/**
		 * Register the JavaScript for the admin area.
		 *
		 * @since    1.0.0
		 */
		public function enqueue_scripts() {

			wp_enqueue_script( $this->plugin_name, plugin_dir_url( __FILE__ ) . 'js/fg-spip-to-wp-admin.js', array( 'jquery', 'jquery-ui-progressbar' ), $this->version, false );
			wp_localize_script( $this->plugin_name, 'objectL10n', array(
				'delete_imported_data_confirmation_message' => __( 'All previously imported data will be deleted from WordPress.', 'fg-spip-to-wp' ),
				'delete_all_confirmation_message' => __( 'All content will be deleted from WordPress.', 'fg-spip-to-wp' ),
				'delete_no_answer_message' => __( 'Please select a remove option.', 'fg-spip-to-wp' ),
				'import_completed' => __( 'IMPORT COMPLETED', 'fg-spip-to-wp' ),
				'content_removed_from_wordpress' => __( 'Content removed from WordPress', 'fg-spip-to-wp' ),
				'settings_saved' => __( 'Settings saved', 'fg-spip-to-wp' ),
				'importing' => __( 'Importing…', 'fg-spip-to-wp' ),
				'import_stopped_by_user' => __( 'IMPORT STOPPED BY USER', 'fg-spip-to-wp' ),
				'internal_links_modified' => __( 'Internal links modified', 'fg-spip-to-wp' ),
			) );
			wp_localize_script( $this->plugin_name, 'objectPlugin', array(
				'log_file_url' => $this->log_file_url,
				'progress_url' => $this->progressbar->get_url(),
			));

		}

		/**
		 * Initialize the plugin
		 */
		public function init() {
			register_importer('fg-spip-to-wp', __('SPIP', 'fg-spip-to-wp'), __('Import categories, articles, news and images from a SPIP database into WordPress', 'fg-spip-to-wp'), array($this, 'importer'));
		}

		/**
		 * Display the stored notices
		 * 
		 * @since     2.0.0
		 */
		public function display_notices() {
			foreach ( $this->notices as $notice ) {
				echo '<div class="' . $notice['level'] . '"><p>[' . $this->plugin_name . '] ' . $notice['message'] . "</p></div>\n";
			}
		}
		
		/**
		 * Write a message in the log file
		 * 
		 * @since     2.0.0
		 * 
		 * @param string $message
		 */
		public function log($message) {
			file_put_contents($this->log_file, "$message\n", FILE_APPEND);
		}
		
		/**
		 * Store an admin notice
		 */
		public function display_admin_notice( $message )	{
			$this->notices[] = array('level' => 'updated', 'message' => $message);
			error_log('[INFO] [' . $this->plugin_name . '] ' . $message);
			$this->log($message);
		}

		/**
		 * Store an admin error
		 */
		public function display_admin_error( $message )	{
			$this->notices[] = array('level' => 'error', 'message' => $message);
			error_log('[ERROR] [' . $this->plugin_name . '] ' . $message);
			$this->log('[ERROR] ' . $message);
		}

		/**
		 * Store an admin warning
		 */
		public function display_admin_warning( $message )	{
			$this->notices[] = array('level' => 'error', 'message' => $message);
			error_log('[WARNING] [' . $this->plugin_name . '] ' . $message);
			$this->log('[WARNING] ' . $message);
		}

		/**
		 * Run the importer
		 * 
		 * @since     2.0.0
		 */
		public function importer() {
			$feasible_actions = array(
				'empty',
				'save',
				'test_database',
				'import',
				'modify_links',
			);
			$action = '';
			foreach ( $feasible_actions as $potential_action ) {
				if ( isset($_POST[$potential_action]) ) {
					$action = $potential_action;
					break;
				}
			}
			$this->dispatch($action);
			$this->display_admin_page(); // Display the admin page
		}
		
		/**
		 * Import triggered by AJAX
		 *
		 * @since    2.0.0
		 */
		public function ajax_importer() {
			$current_user = wp_get_current_user();
			if ( !empty($current_user) && $current_user->has_cap('import') ) {
				$action = filter_input(INPUT_POST, 'plugin_action', FILTER_SANITIZE_STRING);

				if ( $action == 'update_wordpress_info') {
					// Update the WordPress database info
					echo $this->get_database_info();

				} else {
					ini_set('display_errors', true); // Display the errors that may happen (ex: Allowed memory size exhausted)

					// Empty the log file if we empty the WordPress content
					if ( ($action == 'empty') || (($action == 'import') && filter_input(INPUT_POST, 'automatic_empty', FILTER_VALIDATE_BOOLEAN)) ) {
						file_put_contents($this->log_file, '');
					}

					$time_start = date('Y-m-d H:i:s');
					$this->display_admin_notice("=== START $action $time_start ===");
					$result = $this->dispatch($action);
					if ( !empty($result) ) {
						echo json_encode($result); // Send the result to the AJAX caller
					}
					$time_end = date('Y-m-d H:i:s');
					$this->display_admin_notice("=== END $action $time_end ===\n");
				}
			}
			wp_die();
		}
		
		/**
		 * Dispatch the actions
		 * 
		 * @param string $action Action
		 * @return object Result to return to the caller
		 */
		public function dispatch($action) {
			set_time_limit(self::IMPORT_TIMEOUT);

			// Set the time zone
			$timezone = get_option('timezone_string');
			if ( !empty($timezone) ) {
				date_default_timezone_set($timezone);
			}
			
			// Suspend the cache during the migration to avoid exhausted memory problem
			wp_suspend_cache_addition(true);
			wp_suspend_cache_invalidation(true);

			// Default values
			$this->plugin_options = array(
				'automatic_empty'		=> 0,
				'driver'				=> 'mysql',
				'hostname'				=> 'localhost',
				'port'					=> 3306,
				'database'				=> null,
				'username'				=> 'root',
				'password'				=> '',
				'sqlite_file'			=> '',
				'prefix'				=> 'spip_',
				'introtext'				=> 'in_content',
				'archived_posts'		=> 'not_imported',
				'skip_media'			=> 0,
				'media_import_method'	=> 'http',
				'url'					=> null,
				'root_directory'		=> null,
				'logo'					=> 'as_featured',
				'import_external'		=> 0,
				'import_duplicates'		=> 0,
				'force_media_import'	=> 0,
				'import_as_pages'		=> 0,
				'timeout'				=> 5,
				'logger_autorefresh'	=> 1,
			);
			$options = get_option('fgs2wp_options');
			if ( is_array($options) ) {
				$this->plugin_options = array_merge($this->plugin_options, $options);
			}

			// Check if the upload directory is writable
			$upload_dir = wp_upload_dir();
			if ( !is_writable($upload_dir['basedir']) ) {
				$this->display_admin_error(__('The wp-content directory must be writable.', 'fg-spip-to-wp'));
			}

			// Requires at least WordPress 4.4
			if ( version_compare(get_bloginfo('version'), '4.4', '<') ) {
				$this->display_admin_error(sprintf(__('WordPress 4.4+ is required. Please <a href="%s">update WordPress</a>.', 'fg-spip-to-wp'), admin_url('update-core.php')));
			}
			
			elseif ( !empty($action) ) {
				switch($action) {
					
					// Delete content
					case 'empty':
						if ( check_admin_referer( 'empty', 'fgs2wp_nonce' ) ) { // Security check
							if ($this->empty_database($_POST['empty_action'])) { // Empty WP database
								$this->display_admin_notice(__('WordPress content removed', 'fg-spip-to-wp'));
							} else {
								$this->display_admin_error(__('Couldn\'t remove content', 'fg-spip-to-wp'));
							}
							wp_cache_flush();
						}
						break;

					// Save database options
					case 'save':
						if ( check_admin_referer( 'parameters_form', 'fgs2wp_nonce' ) ) { // Security check
							$this->save_plugin_options();
							$this->display_admin_notice(__('Settings saved', 'fg-spip-to-wp'));
						}
						break;

					// Test the database connection
					case 'test_database':
						if ( check_admin_referer( 'parameters_form', 'fgs2wp_nonce' ) ) { // Security check
							// Save database options
							$this->save_plugin_options();

							if ( $this->test_database_connection() ) {
								return array('status' => 'OK', 'message' => __('Connection successful', 'fg-spip-to-wp'));
							} else {
								return array('status' => 'Error', 'message' => __('Connection failed', 'fg-spip-to-wp') . '<br />' . __('See the errors in the log below', 'fg-spip-to-wp'));
							}
						}
						break;

					// Run the import
					case 'import':
						if ( check_admin_referer( 'parameters_form', 'fgs2wp_nonce' ) ) { // Security check
							// Save database options
							$this->save_plugin_options();

							if ( $this->test_database_connection() ) {
								// Automatic empty
								if ( $this->plugin_options['automatic_empty'] ) {
									if ($this->empty_database('all')) {
										$this->display_admin_notice(__('WordPress content removed', 'fg-spip-to-wp'));
									} else {
										$this->display_admin_error(__('Couldn\'t remove content', 'fg-spip-to-wp'));
									}
									wp_cache_flush();
								}

								// Import content
								$this->import();
							}
						}
						break;

					// Stop the import
					case 'stop_import':
						if ( check_admin_referer( 'parameters_form', 'fgs2wp_nonce' ) ) { // Security check
							$this->stop_import();
						}
						break;
					
					// Modify internal links
					case 'modify_links':
						if ( check_admin_referer( 'modify_links', 'fgs2wp_nonce' ) ) { // Security check
							$result = $this->modify_links();
							$this->display_admin_notice(sprintf(_n('%d internal link modified', '%d internal links modified', $result['links_count'], 'fg-spip-to-wp'), $result['links_count']));
						}
						break;
					
					default:
						// Do other actions
						do_action('fgs2wp_dispatch', $action);
				}
			}
		}

		/**
		 * Display the admin page
		 * 
		 */
		private function display_admin_page() {
			$data = $this->plugin_options;

			$data['title'] = __('Import SPIP', 'fg-spip-to-wp');
			$data['description'] = __('This plugin will import categories, articles, news and images from a SPIP database into WordPress.<br />Compatible with SPIP from 1.8 to 3.2.', 'fg-spip-to-wp');
			$data['description'] .= "<br />\n" . sprintf(__('For any issue, please read the <a href="%s" target="_blank">FAQ</a> first.', 'fg-spip-to-wp'), $this->faq_url);
			$data['database_info'] = $this->get_database_info();

			// Hook for modifying the admin page
			$data = apply_filters('fgs2wp_pre_display_admin_page', $data);

			// Load the CSS and Javascript
			$this->enqueue_styles();
			$this->enqueue_scripts();
			
			include plugin_dir_path( dirname( __FILE__ ) ) . 'admin/partials/admin-display.php';

			// Hook for doing other actions after displaying the admin page
			do_action('fgs2wp_post_display_admin_page');

		}

		/**
		 * Get the WordPress database info
		 * 
		 * @return string Database info
		 */
		private function get_database_info() {
			$posts_count = $this->count_posts('post');
			$pages_count = $this->count_posts('page');
			$media_count = $this->count_posts('attachment');
			$cat_count = wp_count_terms('category', array('hide_empty' => 0));

			$database_info =
				sprintf(_n('%d category', '%d categories', $cat_count, 'fg-spip-to-wp'), $cat_count) . "<br />" .
				sprintf(_n('%d post', '%d posts', $posts_count, 'fg-spip-to-wp'), $posts_count) . "<br />" .
				sprintf(_n('%d page', '%d pages', $pages_count, 'fg-spip-to-wp'), $pages_count) . "<br />" .
				sprintf(_n('%d media', '%d medias', $media_count, 'fg-spip-to-wp'), $media_count) . "<br />";
			$database_info = apply_filters('fgs2wp_get_database_info', $database_info);
			return $database_info;
		}
		
		/**
		 * Count the number of posts for a post type
		 * @param string $post_type
		 */
		public function count_posts($post_type) {
			$count = 0;
			$excluded_status = array('trash', 'auto-draft');
			$tab_count = wp_count_posts($post_type);
			foreach ( $tab_count as $key => $value ) {
				if ( !in_array($key, $excluded_status) ) {
					$count += $value;
				}
			}
			return $count;
		}

		/**
		 * Add an help tab
		 * 
		 */
		public function add_help_tab() {
			$screen = get_current_screen();
			$screen->add_help_tab(array(
				'id'	=> 'fgs2wp_help_instructions',
				'title'	=> __('Instructions', 'fg-spip-to-wp'),
				'content'	=> '',
				'callback' => array($this, 'help_instructions'),
			));
			$screen->add_help_tab(array(
				'id'	=> 'fgs2wp_help_options',
				'title'	=> __('Options', 'fg-spip-to-wp'),
				'content'	=> '',
				'callback' => array($this, 'help_options'),
			));
			$screen->set_help_sidebar('<a href="' . $this->faq_url . '" target="_blank">' . __('FAQ', 'fg-spip-to-wp') . '</a>');
		}

		/**
		 * Instructions help screen
		 * 
		 * @return string Help content
		 */
		public function help_instructions() {
			include plugin_dir_path( dirname( __FILE__ ) ) . 'admin/partials/help-instructions.tpl.php';
		}

		/**
		 * Options help screen
		 * 
		 * @return string Help content
		 */
		public function help_options() {
			include plugin_dir_path( dirname( __FILE__ ) ) . 'admin/partials/help-options.tpl.php';
		}

		/**
		 * Open the connection on Spip database
		 *
		 * return boolean Connection successful or not
		 */
		protected function spip_connect() {
			global $spip_db;

			if ( !class_exists('PDO') ) {
				$this->display_admin_error(__('PDO is required. Please enable it.', 'fg-spip-to-wp'));
				return false;
			}
			try {
				switch ( $this->plugin_options['driver'] ) {
					case 'mysql':
						// MySQL
						$spip_db = new PDO('mysql:host=' . $this->plugin_options['hostname'] . ';port=' . $this->plugin_options['port'] . ';dbname=' . $this->plugin_options['database'], $this->plugin_options['username'], $this->plugin_options['password'], array(PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES \'UTF8\''));
						break;
					
					case 'sqlite':
						// SQLite
						if ( !file_exists($this->plugin_options['sqlite_file']) ) {
							$this->display_admin_error(__("Couldn't read the SPIP database SQLite file: ", 'fg-spip-to-wp') . $this->plugin_options['sqlite_file']);
							return false;
						}
						$spip_db = new PDO('sqlite:' . $this->plugin_options['sqlite_file']);
						break;
				}
				if ( defined('WP_DEBUG') && WP_DEBUG ) {
					$spip_db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); // Display SQL errors
				}
			} catch ( PDOException $e ) {
				$this->display_admin_error(__('Couldn\'t connect to the SPIP database. Please check your parameters. And be sure the WordPress server can access the SPIP database.', 'fg-spip-to-wp') . "<br />\n" . $e->getMessage() . "<br />\n" . sprintf(__('Please read the <a href="%s" target="_blank">FAQ for the solution</a>.', 'fg-spip-to-wp'), $this->faq_url));
				return false;
			}
			$this->spip_version = $this->get_spip_version();
			$this->spip_charset = $this->get_spip_meta('charset');
			$this->blob_encoding = $this->is_text_encoded_as_blob() ;
			return true;
		}

		/**
		 * Execute a SQL query on the Spip database
		 * 
		 * @param string $sql SQL query
		 * @return array Query result
		 */
		public function spip_query($sql) {
			global $spip_db;
			$result = array();

			try {
				$query = $spip_db->query($sql, PDO::FETCH_ASSOC);
				if ( is_object($query) ) {
					foreach ( $query as $row ) {
						$result[] = $row;
					}
				}

			} catch ( PDOException $e ) {
				$this->display_admin_error(__('Error:', 'fg-spip-to-wp') . $e->getMessage());
			}
			return $result;
		}

		/**
		 * Delete all posts, medias and categories from the database
		 *
		 * @param string $action	imported = removes only new imported posts
		 * 							all = removes all
		 * @return boolean
		 */
		private function empty_database($action) {
			global $wpdb;
			$result = true;

			$wpdb->show_errors();

			// Hook for doing other actions before emptying the database
			do_action('fgs2wp_pre_empty_database', $action);

			$sql_queries = array();

			if ( $action == 'all' ) {
				// Remove all content
				$sql_queries[] = "TRUNCATE $wpdb->commentmeta";
				$sql_queries[] = "TRUNCATE $wpdb->comments";
				$sql_queries[] = "TRUNCATE $wpdb->term_relationships";
				$sql_queries[] = "TRUNCATE $wpdb->termmeta";
				$sql_queries[] = "TRUNCATE $wpdb->postmeta";
				$sql_queries[] = "TRUNCATE $wpdb->posts";
				$sql_queries[] = <<<SQL
-- Delete Terms
DELETE FROM $wpdb->terms
WHERE term_id > 1 -- non-classe
SQL;
				$sql_queries[] = <<<SQL
-- Delete Terms taxonomies
DELETE FROM $wpdb->term_taxonomy
WHERE term_id > 1 -- non-classe
SQL;
				$sql_queries[] = "ALTER TABLE $wpdb->terms AUTO_INCREMENT = 2";
				$sql_queries[] = "ALTER TABLE $wpdb->term_taxonomy AUTO_INCREMENT = 2";
				
			} else {
				
				// (Re)create a temporary table with the IDs to delete
				$sql_queries[] = <<<SQL
DROP TEMPORARY TABLE IF EXISTS {$wpdb->prefix}fg_data_to_delete;
SQL;

				$sql_queries[] = <<<SQL
CREATE TEMPORARY TABLE IF NOT EXISTS {$wpdb->prefix}fg_data_to_delete (
`id` bigint(20) unsigned NOT NULL,
PRIMARY KEY (`id`)
) DEFAULT CHARSET=utf8;
SQL;
				
				// Insert the imported posts IDs in the temporary table
				$sql_queries[] = <<<SQL
INSERT IGNORE INTO {$wpdb->prefix}fg_data_to_delete (`id`)
SELECT post_id FROM $wpdb->postmeta
WHERE meta_key LIKE '_fgs2wp_%'
SQL;
				
				// Delete the imported posts and related data

				$sql_queries[] = <<<SQL
-- Delete Comments and Comment metas
DELETE c, cm
FROM $wpdb->comments c
LEFT JOIN $wpdb->commentmeta cm ON cm.comment_id = c.comment_ID
INNER JOIN {$wpdb->prefix}fg_data_to_delete del
WHERE c.comment_post_ID = del.id;
SQL;

				$sql_queries[] = <<<SQL
-- Delete Term relashionships
DELETE tr
FROM $wpdb->term_relationships tr
INNER JOIN {$wpdb->prefix}fg_data_to_delete del
WHERE tr.object_id = del.id;
SQL;

				$sql_queries[] = <<<SQL
-- Delete Posts Children and Post metas
DELETE p, pm
FROM $wpdb->posts p
LEFT JOIN $wpdb->postmeta pm ON pm.post_id = p.ID
INNER JOIN {$wpdb->prefix}fg_data_to_delete del
WHERE p.post_parent = del.id
AND p.post_type != 'attachment'; -- Don't remove the old medias attached to posts
SQL;

				$sql_queries[] = <<<SQL
-- Delete Posts and Post metas
DELETE p, pm
FROM $wpdb->posts p
LEFT JOIN $wpdb->postmeta pm ON pm.post_id = p.ID
INNER JOIN {$wpdb->prefix}fg_data_to_delete del
WHERE p.ID = del.id;
SQL;

				// Truncate the temporary table
				$sql_queries[] = <<<SQL
TRUNCATE {$wpdb->prefix}fg_data_to_delete;
SQL;
				
				// Insert the imported terms IDs in the temporary table
				$sql_queries[] = <<<SQL
INSERT IGNORE INTO {$wpdb->prefix}fg_data_to_delete (`id`)
SELECT term_id FROM $wpdb->termmeta
WHERE meta_key LIKE '_fgs2wp_%'
SQL;
				
				// Delete the imported terms and related data

				$sql_queries[] = <<<SQL
-- Delete Terms, Term taxonomies and Term metas
DELETE t, tt, tm
FROM $wpdb->terms t
LEFT JOIN $wpdb->term_taxonomy tt ON tt.term_id = t.term_id
LEFT JOIN $wpdb->termmeta tm ON tm.term_id = t.term_id
INNER JOIN {$wpdb->prefix}fg_data_to_delete del
WHERE t.term_id = del.id;
SQL;

				// Truncate the temporary table
				$sql_queries[] = <<<SQL
TRUNCATE {$wpdb->prefix}fg_data_to_delete;
SQL;
				
				// Insert the imported comments IDs in the temporary table
				$sql_queries[] = <<<SQL
INSERT IGNORE INTO {$wpdb->prefix}fg_data_to_delete (`id`)
SELECT comment_id FROM $wpdb->commentmeta
WHERE meta_key LIKE '_fgs2wp_%'
SQL;
				
				// Delete the imported comments and related data
				$sql_queries[] = <<<SQL
-- Delete Comments and Comment metas
DELETE c, cm
FROM $wpdb->comments c
LEFT JOIN $wpdb->commentmeta cm ON cm.comment_id = c.comment_ID
INNER JOIN {$wpdb->prefix}fg_data_to_delete del
WHERE c.comment_ID = del.id;
SQL;

			}

			// Execute SQL queries
			if ( count($sql_queries) > 0 ) {
				foreach ( $sql_queries as $sql ) {
					$result &= $wpdb->query($sql);
				}
			}

			// Hook for doing other actions after emptying the database
			do_action('fgs2wp_post_empty_database', $action);

			// Drop the temporary table
			$wpdb->query("DROP TEMPORARY TABLE IF EXISTS {$wpdb->prefix}fg_data_to_delete;");
				
			// Reset the SPIP import counters
			update_option('fgs2wp_last_spip_article_id', 0);
			update_option('fgs2wp_last_spip_news_id', 0);
			update_option('fgs2wp_last_category_id', 0);

			// Re-count categories and tags items
			$this->terms_count();

			// Update cache
			$this->clean_cache();
			delete_transient('wc_count_comments');

			$this->optimize_database();

			$this->progressbar->set_total_count(0);
			
			$wpdb->hide_errors();
			return ($result !== false);
		}

		/**
		 * Optimize the database
		 *
		 */
		protected function optimize_database() {
			global $wpdb;

			$sql = <<<SQL
OPTIMIZE TABLE 
`$wpdb->commentmeta` ,
`$wpdb->comments` ,
`$wpdb->options` ,
`$wpdb->postmeta` ,
`$wpdb->posts` ,
`$wpdb->terms` ,
`$wpdb->term_relationships` ,
`$wpdb->term_taxonomy`,
`$wpdb->termmeta`
SQL;
			$wpdb->query($sql);
		}

		/**
		 * Test the database connection
		 * 
		 * @return boolean
		 */
		function test_database_connection() {
			global $spip_db;

			if ( $this->spip_connect() ) {
				// Test that the "articles" table exists
				if ( $this->table_exists('articles') ) {
					$this->display_admin_notice(__('Connected with success to the SPIP database', 'fg-spip-to-wp'));

					do_action('fgs2wp_post_test_database_connection');
					return true;

				} else {
					$this->display_admin_error(__('Couldn\'t connect to the SPIP database. Please check your parameters. And be sure the WordPress server can access the SPIP database.', 'fg-spip-to-wp') . "<br />\n");
				}
			}
			$spip_db = null;
			return false;
		}

		/**
		 * Get some Spip information
		 *
		 */
		public function get_spip_info() {
			$message = __('Spip data found:', 'fg-spip-to-wp') . "\n";

			// Categories
			$cat_count = $this->get_categories_count();
			$message .= sprintf(_n('%d section', '%d sections', $cat_count, 'fg-spip-to-wp'), $cat_count) . "\n";

			// Articles
			$articles_count = $this->get_articles_count();
			$message .= sprintf(_n('%d article', '%d articles', $articles_count, 'fg-spip-to-wp'), $articles_count) . "\n";

			// News
			$news_count = $this->get_news_count();
			$message .= sprintf(_n('%d news', '%d news', $news_count, 'fg-spip-to-wp'), $news_count) . "\n";

			$message = apply_filters('fgs2wp_pre_display_spip_info', $message);

			$this->display_admin_notice($message);
		}

		/**
		 * Get the number of Spip categories
		 * 
		 * @return int Number of categories
		 */
		private function get_categories_count() {
			$prefix = $this->plugin_options['prefix'];
			$sql = "
				SELECT COUNT(*) AS nb
				FROM ${prefix}rubriques r
			";
			$result = $this->spip_query($sql);
			$cat_count = isset($result[0]['nb'])? $result[0]['nb'] : 0;
			return $cat_count;
		}

		/**
		 * Get the number of Spip articles
		 * 
		 * @return int Number of articles
		 */
		private function get_articles_count() {
			$prefix = $this->plugin_options['prefix'];
			$sql = "
				SELECT COUNT(*) AS nb
				FROM ${prefix}articles a
				WHERE a.statut IN ('publie', 'prepa', 'prop')
			";
			$result = $this->spip_query($sql);
			$articles_count = isset($result[0]['nb'])? $result[0]['nb'] : 0;
			return $articles_count;
		}

		/**
		 * Get the number of Spip news
		 * 
		 * @return int Number of news
		 */
		private function get_news_count() {
			$prefix = $this->plugin_options['prefix'];
			$sql = "
				SELECT COUNT(*) AS nb
				FROM ${prefix}breves b
				WHERE b.statut IN ('publie', 'prepa', 'prop')
			";
			$result = $this->spip_query($sql);
			$news_count = isset($result[0]['nb'])? $result[0]['nb'] : 0;
			return $news_count;
		}

		/**
		 * Save the plugin options
		 *
		 */
		private function save_plugin_options() {
			$this->plugin_options = array_merge($this->plugin_options, $this->validate_form_info());
			update_option('fgs2wp_options', $this->plugin_options);

			// Hook for doing other actions after saving the options
			do_action('fgs2wp_post_save_plugin_options');
		}

		/**
		 * Validate POST info
		 *
		 * @return array Form parameters
		 */
		private function validate_form_info() {
			// Add http:// before the URL if it is missing
			$url = esc_url(filter_input(INPUT_POST, 'url', FILTER_SANITIZE_URL));
			if ( !empty($url) && (preg_match('#^https?://#', $url) == 0) ) {
				$url = 'http://' . $url;
			}
			return array(
				'automatic_empty'		=> filter_input(INPUT_POST, 'automatic_empty', FILTER_VALIDATE_BOOLEAN),
				'driver'				=> filter_input(INPUT_POST, 'driver', FILTER_SANITIZE_STRING),
				'hostname'				=> filter_input(INPUT_POST, 'hostname', FILTER_SANITIZE_STRING),
				'port'					=> filter_input(INPUT_POST, 'port', FILTER_SANITIZE_NUMBER_INT),
				'database'				=> filter_input(INPUT_POST, 'database', FILTER_SANITIZE_STRING),
				'username'				=> filter_input(INPUT_POST, 'username'),
				'password'				=> filter_input(INPUT_POST, 'password'),
				'sqlite_file'			=> filter_input(INPUT_POST, 'sqlite_file', FILTER_SANITIZE_STRING),
				'prefix'				=> filter_input(INPUT_POST, 'prefix', FILTER_SANITIZE_STRING),
				'introtext'				=> filter_input(INPUT_POST, 'introtext', FILTER_SANITIZE_STRING),
				'archived_posts'		=> filter_input(INPUT_POST, 'archived_posts', FILTER_SANITIZE_STRING),
				'skip_media'			=> filter_input(INPUT_POST, 'skip_media', FILTER_VALIDATE_BOOLEAN),
				'media_import_method'	=> filter_input(INPUT_POST, 'media_import_method', FILTER_SANITIZE_STRING),
				'url'					=> $url,
				'root_directory'		=> filter_input(INPUT_POST, 'root_directory', FILTER_SANITIZE_STRING),
				'logo'					=> filter_input(INPUT_POST, 'logo', FILTER_SANITIZE_STRING),
				'import_external'		=> filter_input(INPUT_POST, 'import_external', FILTER_VALIDATE_BOOLEAN),
				'import_duplicates'		=> filter_input(INPUT_POST, 'import_duplicates', FILTER_VALIDATE_BOOLEAN),
				'force_media_import'	=> filter_input(INPUT_POST, 'force_media_import', FILTER_VALIDATE_BOOLEAN),
				'import_as_pages'		=> filter_input(INPUT_POST, 'import_as_pages', FILTER_VALIDATE_BOOLEAN),
				'timeout'				=> filter_input(INPUT_POST, 'timeout', FILTER_SANITIZE_NUMBER_INT),
				'logger_autorefresh'	=> filter_input(INPUT_POST, 'logger_autorefresh', FILTER_VALIDATE_BOOLEAN),
			);
		}

		/**
		 * Import
		 *
		 */
		private function import() {
			if ( $this->spip_connect() ) {

				$time_start = microtime(true);

				define('WP_IMPORTING', true);
				update_option('fgs2wp_stop_import', false, false); // Reset the stop import action
				
				// To solve the issue of links containing ":" in multisite mode
				kses_remove_filters();

				// Check prerequesites before the import
				$do_import = apply_filters('fgs2wp_pre_import_check', true);
				if ( !$do_import) {
					return;
				}

				$total_elements_count = $this->get_total_elements_count();
				$this->progressbar->set_total_count($total_elements_count);
				
				$this->post_type = ($this->plugin_options['import_as_pages'] == 1) ? 'page' : 'post';
				$this->media_path = $this->get_image_path();
				
				// Hook for doing other actions before the import
				do_action('fgs2wp_pre_import');

				// Categories
				if ( !isset($this->premium_options['skip_categories']) || !$this->premium_options['skip_categories'] ) {
					$cat_count = $this->import_categories();
					$this->display_admin_notice(sprintf(_n('%d category imported', '%d categories imported', $cat_count, 'fg-spip-to-wp'), $cat_count));
				}

				// Set the list of previously imported categories
				$this->imported_categories = $this->get_term_metas_by_metakey('_fgs2wp_old_category_id');
				
				// Articles and medias
				if ( !isset($this->premium_options['skip_articles']) || !$this->premium_options['skip_articles'] ) {
					$this->import_articles();
				}
				
				// News
				if ( !isset($this->premium_options['skip_news']) || !$this->premium_options['skip_news'] ) {
					$this->import_news();
				}

				$this->display_admin_notice(sprintf(_n('%d post imported', '%d posts imported', $this->posts_count, 'fg-spip-to-wp'), $this->posts_count));
				if ( $this->pages_count > 0 ) {
					$this->display_admin_notice(sprintf(_n('%d page imported', '%d pages imported', $this->pages_count, 'fg-spip-to-wp'), $this->pages_count));
				}
				$this->display_admin_notice(sprintf(_n('%d media imported', '%d medias imported', $this->media_count, 'fg-spip-to-wp'), $this->media_count));
				
				if ( !$this->import_stopped() ) {
					// Hook for doing other actions after the import
					do_action('fgs2wp_post_import');
				}

				// Hook for other notices
				do_action('fgs2wp_import_notices');

				// Debug info
				if ( defined('WP_DEBUG') && WP_DEBUG ) {
					$this->display_admin_notice(sprintf("Memory used: %s bytes<br />\n", number_format(memory_get_usage())));
					$time_end = microtime(true);
					$this->display_admin_notice(sprintf("Duration: %d sec<br />\n", $time_end - $time_start));
				}

				$this->display_admin_notice(__("Don't forget to modify internal links.", 'fg-spip-to-wp'));
				$this->display_admin_notice("IMPORT COMPLETED");

				wp_cache_flush();
			}
		}

		/**
		 * Actions to do before the import
		 * 
		 * @param bool $import_doable Can we start the import?
		 * @return bool Can we start the import?
		 */
		public function pre_import_check($import_doable) {
			if ( $import_doable ) {
				if ( !$this->plugin_options['skip_media'] ) {
					if ( ($this->plugin_options['media_import_method'] == 'http') && empty($this->plugin_options['url']) ) {
						$this->display_admin_error(__('The URL field is required to import the media.', 'fg-spip-to-wp'));
						$import_doable = false;
					} elseif ( ($this->plugin_options['media_import_method'] == 'local') && empty($this->plugin_options['root_directory']) ) {
						$this->display_admin_error(__('The root directory field is required to import the media.', 'fg-spip-to-wp'));
						$import_doable = false;
					}
				}
			}
			return $import_doable;
		}

		/**
		 * Get the number of elements to import
		 * 
		 * @return int Number of elements to import
		 */
		private function get_total_elements_count() {
			$count = 0;
			
			// Categories
			if ( !isset($this->premium_options['skip_categories']) || !$this->premium_options['skip_categories'] ) {
				$count += $this->get_categories_count();
			}

			// Articles
			if ( !isset($this->premium_options['skip_articles']) || !$this->premium_options['skip_articles'] ) {
				$count += $this->get_articles_count();
			}

			// News
			if ( !isset($this->premium_options['skip_news']) || !$this->premium_options['skip_news'] ) {
				$count += $this->get_news_count();
			}

			$count = apply_filters('fgs2wp_get_total_elements_count', $count);
			
			return $count;
		}
		
		/**
		 * Import categories
		 *
		 * @return int Number of categories imported
		 */
		private function import_categories() {
			$imported_categories_count = 0;
			$all_categories = array();
			
			if ( $this->import_stopped() ) {
				return 0;
			}
			
			$this->log(__('Importing categories...', 'fg-spip-to-wp'));
			
			// Hook before importing the categories
			do_action('fgs2wp_pre_import_categories');
			
			do {
				if ( $this->import_stopped() ) {
					break;
				}
				$categories = $this->get_categories($this->chunks_size); // Get the Spip categories
				$categories_count = count($categories);
				
				if ( ($categories != null) && (count($categories) > 0) ) {
					$all_categories = array_merge($all_categories, $categories);
					// Insert the categories
					$imported_categories_count += $this->insert_categories($categories);
				}
			} while ( ($categories != null) && ($categories_count > 0) );
			
			$all_categories = apply_filters('fgs2wp_import_categories', $all_categories);
			
			// Update the categories with their parent ids
			// We need to do it in a second step because the children categories
			// may have been imported before their parent
			$this->update_parent_categories($all_categories);
			
			if ( !$this->import_stopped() ) {
				// Hook after importing all the categories
				do_action('fgs2wp_post_import_categories', $all_categories);
			}

			return $imported_categories_count;
		}
		
		/**
		 * Insert a list of categories in the database
		 * 
		 * @param array $categories List of categories
		 * @param string $taxonomy Taxonomy
		 * @param string $last_category_metakey Last category meta key
		 * @return int Number of inserted categories
		 */
		public function insert_categories($categories, $taxonomy='category', $last_category_metakey='fgs2wp_last_category_id') {
			$cat_count = 0;
			$processed_cat_count = count($categories);
			$term_metakey = '_fgs2wp_old_category_id';
			
			// Set the list of previously imported categories
			$this->imported_categories = $this->get_term_metas_by_metakey($term_metakey);
			
			$terms = array();
			if ( $taxonomy == 'category') {
				$terms[] = '1'; // unclassified category
			}
			
			foreach ( $categories as $category ) {
				$category_id = $category['id_rubrique'];

				$category['texte'] = $this->convert_spip1_longblob($category['texte']); // SPIP 1.x LONGBLOB
				
				// Check if the category is already imported
				if ( array_key_exists($category_id, $this->imported_categories) ) {
					continue; // Do not import already imported category
				}
				
				// Store the last ID to resume the import where it left off
				update_option($last_category_metakey, $category_id);
				
				$parent_id = isset($this->imported_categories[$category['id_parent']])? $this->imported_categories[$category['id_parent']]: 0;
				$new_cat_id = $this->insert_category($category, $term_metakey, $parent_id);
				
				if ( is_wp_error($new_cat_id) ) {
					continue;
				}
				$cat_count++;
				$terms[] = $new_cat_id;
				$this->imported_categories[$category_id] = $new_cat_id;
				
				// Hook after importing the category
				do_action('fgs2wp_post_import_category', $new_cat_id, $category);
			}
			
			$this->progressbar->increment_current_count($processed_cat_count);
			
			// Update cache
			if ( !empty($terms) ) {
				wp_update_term_count_now($terms, $taxonomy);
				$this->clean_cache($terms, $taxonomy);
			}
			
			return $cat_count;
		}

		/**
		 * Insert a category in the database
		 * 
		 * @since 2.5.0
		 * 
		 * @param array $category Category
		 * @param string $term_metakey Term meta_key
		 * @param int $parent_id Category parent ID
		 * @return int Category ID
		 */
		public function insert_category($category, $term_metakey, $parent_id=0) {
			$category_id = $category['id_rubrique'];
			$category['titre'] = $this->remove_id($category['titre']);
			$category['titre'] = FG_Spip_to_WordPress_Tools::fix_encoding($category['titre']);
			$category_slug = sanitize_title($category['titre']);
			$category['texte'] = FG_Spip_to_WordPress_Tools::fix_encoding($category['texte']);

			// Insert the category
			$new_category = array(
				'cat_name' 				=> $category['titre'],
				'category_description'	=> $this->spip_format($category['texte']),
				'category_nicename'		=> $category_slug,
				'category_parent'		=> $parent_id,
			);

			// Hook before inserting the category
			$new_category = apply_filters('fgs2wp_pre_insert_category', $new_category, $category);

			$new_cat_id = wp_insert_category($new_category, true);

			if ( !is_wp_error($new_cat_id) ) {
				// Store the Spip category ID
				add_term_meta($new_cat_id, $term_metakey, $category_id, true);

				// Hook after inserting the category
				do_action('fgs2wp_post_insert_category', $new_cat_id, $category);
			} else {
				if ( isset($new_cat_id->error_data['term_exists']) ) {
					// Store the Spip category ID
					add_term_meta($new_cat_id->error_data['term_exists'], $term_metakey, $category_id, false);
				}
			}
			return $new_cat_id;
		}
		
		/**
		 * Update the parent categories
		 * 
		 * @param array $categories Categories
		 * @param string $taxonomy Taxonomy
		 */
		public function update_parent_categories($categories, $taxonomy='category') {
			foreach ( $categories as $category ) {
				// Parent category
				if ( isset($this->imported_categories[$category['id_rubrique']]) && !empty($category['id_parent']) && isset($this->imported_categories[$category['id_parent']]) ) {
					$cat_id = $this->imported_categories[$category['id_rubrique']];
					$parent_cat_id = $this->imported_categories[$category['id_parent']];
					wp_update_term($cat_id, $taxonomy, array('parent' => $parent_cat_id));
				}
			}
		}
		
		/**
		 * Convert SPIP format to HTML
		 * 
		 * @param string $text SPIP text
		 * @return string HTML text
		 */
		public function spip_format($text) {
			$text = str_replace('{{{', '<h2>', $text);
			$text = str_replace('}}}', '</h2>', $text);
			$text = str_replace('{{', '<strong>', $text);
			$text = str_replace('}}', '</strong>', $text);
			$text = str_replace('{', '<em>', $text);
			$text = str_replace('}', '</em>', $text);
			$text = preg_replace('#\[\->(.+?)\]#', "<a href=\"$1\">$1</a>", $text); // hyperlink with no anchor text, eg: [->http://www.spip.net]
			$text = preg_replace('#\[([^[]+?)\->(.+?)\]#', "<a href=\"$2\">$1</a>", $text); // hyperlink, eg: [SPIP->http://www.spip.net]
			$text = preg_replace('#\[([^[]*?)<-\]#', "<a name=\"$1\"></a>", $text); // anchor, eg: [anchor<-]
			
			// Quote
			$text = preg_replace('#<quote>(.*)</quote>#', '<blockquote>$1</blockquote>', $text);
			$text = preg_replace('#<quote\|title=(.*?)(\|.*)?>#', '<blockquote>$1</blockquote>', $text);
			
			// Line feeds
			$text = preg_replace(",\r\n?,S", "\n", $text);
			$text = preg_replace(",<p[>[:space:]],iS", "\n\n\\0", $text);
			$text = preg_replace(",</p[>[:space:]],iS", "\\0\n\n", $text);

			// Tables
			$text = preg_replace(",^\n?[|],S", "\n\n|", $text);
			$text = preg_replace(",\n\n+[|],S", "\n\n\n\n|", $text);
			$text = preg_replace(",[|](\n\n+|\n?$),S", "|\n\n\n\n", $text);
			$regs = array();
			if (preg_match_all(',[^|](\n[|].*[|]\n)[^|],UmsS', $text, $regs, PREG_SET_ORDER)) {
				foreach ($regs as $t) {
					$text = str_replace($t[1], $this->process_table_shortcodes($t[1]), $text);
				}
			}
			
			// Ordered and unordered lists
			if ( (strpos($text, "\n-*") !== false) || (strpos($text, "\n-#") !== false) ) {
				$text = $this->process_lists_shortcodes($text);
			}
			
			// Row starts
			$text = $this->process_row_starts($text);
			
			return $text;
		}
		
		/**
		 * Convert the unordered and ordered lists SPIP shortcodes
		 * 
		 * @param string $text Text
		 * @return string Text
		 */
		private function process_lists_shortcodes($text) {
			$parags = preg_split(",\n[[:space:]]*\n,S", $text);
			$text = '';
			$regs = array();
			$pile_li = array();
			$pile_type = array();

			foreach ( $parags as $para ) {
				$niveau = 0;
				$lignes = explode("\n-", "\n" . $para);

				$type = '';
				$first_item = true;
				foreach ( $lignes as $item ) {
					if ( $first_item ) {
						$text .= $item;
						$first_item = false;
						continue;
					}
					if ( preg_match(",^([*]*|[#]*)([^*#].*)$,sS", $item, $regs) ) {
						$profond = strlen($regs[1]);

						if ( $profond > 0 ) {
							$ajout='';
							$nouv_type = (substr($item,0,1) == '*') ? 'ul' : 'ol';
							$change_type = ($type AND ($type <> $nouv_type) AND ($profond == $niveau)) ? 1 : 0;
							$type = $nouv_type;

							while ( $niveau > $profond - $change_type ) {
								$ajout .= $pile_li[$niveau];
								$ajout .= $pile_type[$niveau];
								if (!$change_type) {
									unset ($pile_li[$niveau]);
								}
								$niveau --;
							}

							if ( $niveau == $profond && !$change_type ) {
								$ajout .= $pile_li[$niveau];
							}

							while ( $niveau < $profond ) {
								if ( $niveau == 0 ) {
									$ajout .= "\n\n";
								}
								$niveau ++;
								$ajout .= "<$type>";
								$pile_type[$niveau] = "</$type>";
							}

							$ajout .= "<li>";
							$pile_li[$profond] = "</li>";
						}
						else {
							$ajout = "\n-";
						}
						$text .= $ajout . $regs[2];
					}
				}

				$ajout = '';
				while ( $niveau > 0 ) {
					$ajout .= $pile_li[$niveau];
					$ajout .= $pile_type[$niveau];
					$niveau --;
				}
				$text .= $ajout;
				$text .= "\n\n";
			}
			return substr($text, 0, -2);
		}
		
		/**
		 * Convert the SPIP table shorcodes to HTML
		 * 
		 * @since 2.14.0
		 * 
		 * @param string $text Text
		 * @return string Text
		 */
		private function process_table_shortcodes($text) {
			$regs = array();
			$thead = array();
			$cols = array();

			preg_match_all(',([|].*)[|]\n,UmsS', $text, $regs, PREG_PATTERN_ORDER);
			$lignes = array();
			$debut_table = $summary = '';
			$l = 0;
			$numeric = true;

			$reg_line1 = ',^(\|(' . _RACCOURCI_TH_SPAN . '))+$,sS';
			$reg_line_all = ',^'  . _RACCOURCI_TH_SPAN . '$,sS';
			foreach ($regs[1] as $ligne) {
				$l++;
				if ($l == 1) {
					$cap = array();
					if (preg_match(',^\|\|([^|]*)(\|(.*))?$,sS', rtrim($ligne,'|'), $cap)) {
						$l = 0;
						$caption = trim($cap[1]);
						if ( !empty($caption) ) {
							$debut_table .= "<caption>".$caption."</caption>\n";
						}
						$summary = isset($cap[3])? ' summary="'.esc_html(trim($cap[3])).'"' : '';
					}
					else if ( preg_match($reg_line1, $ligne, $thead) ) {
						preg_match_all('/\|([^|]*)/S', $ligne, $cols);
						$ligne = '';
						$cols = $cols[1];
						$colspan = 1;
						for ( $c = count($cols)-1; $c >= 0; $c-- ) {
							$attr = '';
							if ( $cols[$c] == '<' ) {
							  $colspan++;
							} else {
							  if ( $colspan > 1 ) {
								$attr = " colspan='$colspan'";
								$colspan = 1;
							  }
							  $ligne = "<th scope='col'$attr>$cols[$c]</th>$ligne";
							}
						}

						$debut_table .= "<thead><tr class='row_first'>" . $ligne."</tr></thead>\n";
						$l = 0;
					}
				}

				if ($l) {
					if ( strpos($ligne,"\n-*") !== false OR strpos($ligne,"\n-#") !== false ) {
						$ligne = $this->process_lists_shortcodes($ligne);
					}

					$ligne = preg_replace("/\n{2,}/", "<br />\n", $ligne);

					preg_match_all('/\|([^|]*)/S', $ligne, $cols);
					$lignes[] = $cols[1];
				}
			}

			$rowspans = $numeric = array();
			$n = count($lignes[0]);
			$k = count($lignes);
			for ( $i = 0; $i < $n; $i++ ) {
				$align = true;
				for ( $j = 0; $j < $k; $j++ ) {
					$rowspans[$j][$i] = 1;
				}
				for ( $j = 0; $j < $k; $j++ ) {
					$cell = trim($lignes[$j][$i]);
					if ( preg_match($reg_line_all, $cell) ) {
						$r = array();
						if ( !preg_match('/^\d+([.,]?)\d*$/', $cell, $r) ) {
							$align = '';
							break;
						}
						elseif ($r[1]) {
							$align = $r[1];
						}
					}
				}
				$numeric[$i] = !$align ? '' :
					(" style='text-align: " .
					(/* $align !== true ?"\"$align\"" : */ 'right') .
					"'");
			}

			$html = '';

			for ( $l = count($lignes)-1; $l >= 0; $l-- ) {
				$cols = $lignes[$l];
				$colspan = 1;
				$ligne = '';

				for ( $c = count($cols)-1; $c >= 0; $c-- ) {
					$attr = isset($numeric[$c])? $numeric[$c] : '';
					$cell = trim($cols[$c]);
					if ( $cell == '<' ) {
					  $colspan++;

					} elseif( $cell == '^' ) {
					  $rowspans[$l-1][$c] += $rowspans[$l][$c];

					} else {
					  if( $colspan>1 ) {
						$attr .= " colspan='$colspan'";
						$colspan = 1;
					  }
					  if ( isset($rowspans[$l][$c]) && ($x=$rowspans[$l][$c]) > 1 ) {
						$attr .= " rowspan='$x'";
					  }
					  $ligne = "\n<td" . $attr . '>' . $cols[$c] . '</td>' . $ligne;
					}
				}

				$class = $this->alternate($l+1, 'even', 'odd');
				$html = "<tr class='row_$class'>$ligne</tr>\n$html";
			}
			return "\n\n<table" . $summary . ">\n"
				. $debut_table
				. "<tbody>\n"
				. $html
				. "</tbody>\n"
				. "</table>\n\n";
		}
		
		/**
		 * Filter |alternate
		 * 
		 * @param int $i Row number
		 * @return mixed
		 */
		private function alternate($i) {
			$num = func_num_args();
			$args = func_get_args();
			
			if ( $num == 2 && is_array($args[1]) ) {
				$args = $args[1];
				array_unshift($args,'');
				$num = count($args);
			}
			
			return $args[(intval($i)-1)%($num-1)+1];
		}
		
		/**
		 * Replace the starts of the rows
		 * 
		 * @since 2.14.0
		 * 
		 * @param string $text Text
		 * @return string Text
		 */
		private function process_row_starts($text) {
			$text = preg_replace(
				array(
					"/\n(----+|____+)/S",
					"/\n-- */S",
					"/\n_ +/S"
				),
				array(
					"\n\n<hr />\n\n",
					"\n<br />&mdash;&nbsp;",
					"\n<br />"
				),
				$text
			);
			return $text;
		}
		
		/**
		 * Clean the cache
		 * 
		 */
		public function clean_cache($terms = array()) {
			delete_option("category_children");
			clean_term_cache($terms, 'category');
		}

		/**
		 * Import articles
		 *
		 * @return bool Import successful or not
		 */
		private function import_articles() {
			$this->log(__('Importing articles...', 'fg-spip-to-wp'));
			
			// Anti-duplicate
			$this->test_antiduplicate = false;
			
			// Hook for doing other actions before the import
			do_action('fgs2wp_pre_import_articles');

			do {
				if ( $this->import_stopped() ) {
					break;
				}
				$posts = $this->get_articles($this->chunks_size); // Get the Spip articles
				$posts_count = count($posts);

				if ( is_array($posts) ) {
					foreach ( $posts as $post ) {
						$new_post_id = $this->import_article($post);
						if ( $new_post_id === false ) {
							return false;
						}
						// Hook for doing other actions after importing the post
						do_action('fgs2wp_post_import_post', $new_post_id, $post, 'article');
					}
				}
				$this->progressbar->increment_current_count($posts_count);
			} while ( ($posts != null) && ($posts_count > 0) );

			if ( !$this->import_stopped() ) {
				// Hook for doing other actions after the import
				do_action('fgs2wp_post_import_articles');
			}

			return true;
		}

		/**
		 * Import an article
		 * 
		 * @since 2.0.0
		 * 
		 * @param array $post Post data
		 * @return int new post ID | false | WP_Error
		 */
		public function import_article($post) {
			$object_type = 'article';
			
			$post['titre'] = FG_Spip_to_WordPress_Tools::fix_encoding($post['titre']);
			$post['texte'] = $this->convert_spip1_longblob($post['texte']); // SPIP 1.x LONGBLOB
			$post['texte'] = FG_Spip_to_WordPress_Tools::fix_encoding($post['texte']);
			$post['chapo'] = FG_Spip_to_WordPress_Tools::fix_encoding($post['chapo']);
			
			// Anti-duplicate
			if ( !$this->test_antiduplicate ) {
				sleep(2);
				$test_post_id = $this->get_wp_post_id_from_spip_article_id($post['id']);
				if ( !empty($test_post_id) ) {
					$this->display_admin_error(__('The import process is still running. Please wait before running it again.', 'fg-spip-to-wp'));
					return false;
				}
				$this->test_antiduplicate = true;
			}

			$post['titre'] = $this->remove_id($post['titre']); // Remove the ID from the title

			// Hook for modifying the Spip post before processing
			$post = apply_filters('fgs2wp_pre_process_post', $post, $object_type);

			// Date
			$post_date = $this->sanitize_date($post['date']);

			$content = $post['texte'];
			$chapo = $post['chapo'];
			
			// Medias
			if ( !$this->plugin_options['skip_media'] ) {
				// Featured image
				$featured_image = $this->get_featured_image($post['id'], $object_type);
				list($featured_image, $post) = apply_filters('fgs2wp_pre_import_media', array($featured_image, $post));
				$img_featured_image = '';
				if ( !empty($featured_image) ) {
					$img_featured_image = '<img src="' . $featured_image . '" />';
				}

				// Replace documents shortcodes
				$chapo = $this->replace_document_shortcodes($chapo);
				$content = $this->replace_document_shortcodes($content);

				// Import media
				$result = $this->import_media_from_content($img_featured_image . $chapo . $content, $post_date);
				$post_media = $result['media'];
				$this->media_count += $result['media_count'];

				// Add the logo into the content
				if ( ($this->plugin_options['logo'] != 'as_featured') && !empty($img_featured_image) ) {
					$content = '<p>' . $img_featured_image . '</p>' . $content;
				}
			} else {
				// Skip media
				$post_media = array();
			}

			// Category
			$categories_ids = array();
			$category_id = $post['id_rubrique'];
			if ( array_key_exists($category_id, $this->imported_categories) ) {
				$categories_ids[] = $this->imported_categories[$category_id];
			}
			if ( count($categories_ids) == 0 ) {
				$categories_ids[] = 1; // default category
			}

			// Header
			$excerpt = '';
			if ( !empty($chapo) ) {
				switch ( $this->plugin_options['introtext'] ) {
					case 'in_excerpt':
						$excerpt = $chapo;
						break;
					case 'in_content':
						$content = '<p class="post_excerpt">' . $chapo . '</p>' . "\n<!--more-->\n" . $content;
						break;
					case 'in_excerpt_and_content':
						$excerpt = $chapo;
						$content = '<p class="post_excerpt">' . $chapo . '</p>' . $content;
						break;
				}
			}

			// Process content
			$excerpt = $this->process_content($excerpt, $post_media);
			$content = $this->process_content($content, $post_media);

			// Insert the post
			$new_post = array(
				'post_category'		=> $categories_ids,
				'post_content'		=> $content,
				'post_date'			=> $post_date,
				'post_excerpt'		=> $excerpt,
				'post_status'		=> $this->get_status($post['statut']),
				'post_title'		=> $post['titre'],
				'post_name'			=> sanitize_title($post['titre']),
				'post_type'			=> $this->post_type,
				'comment_status'	=> ($post['accepter_forum'] == 'non')? 'closed' : 'open',
			);

			// Hook for modifying the WordPress post just before the insert
			$new_post = apply_filters('fgs2wp_pre_insert_post', $new_post, $post, $object_type);

			$new_post_id = wp_insert_post($new_post, true);
			
			// Increment the Spip last imported article ID
			update_option('fgs2wp_last_spip_article_id', $post['id']);
			
			if ( is_wp_error($new_post_id) ) {
				$this->display_admin_error(sprintf(__('Article #%d:', 'fg-spip-to-wp'), $post['id']) . ' ' . $new_post_id->get_error_message());
			} else {
				// Add links between the post and its medias
				$this->add_post_media($new_post_id, $new_post, $post_media, $this->plugin_options['logo'] != 'in_content');

				// Add the Spip ID as a post meta in order to modify links after
				add_post_meta($new_post_id, '_fgs2wp_old_article_id', $post['id'], true);

				if ( $this->post_type == 'page' ) {
					$this->pages_count++;
				} else {
					$this->posts_count++;
				}

				// Hook for doing other actions after inserting the post
				do_action('fgs2wp_post_insert_post', $new_post_id, $post, $object_type);
			}
			
			return $new_post_id;
		}

		/**
		 * Convert a SPIP 1.x LONGBLOB to TEXT with the UTF8 encoding
		 * 
		 * @since 2.10.0
		 * 
		 * @param string $text Text
		 * @return string Text
		 */
		public function convert_spip1_longblob($text) {
			if ( $this->blob_encoding && ($this->spip_charset != 'utf-8') ) {
				$text = utf8_encode($text);
			}
			return $text;
		}
		
		/**
		 * Import news
		 *
		 * @return bool Import successful or not
		 */
		private function import_news() {
			$this->log(__('Importing news...', 'fg-spip-to-wp'));
			
			// Anti-duplicate
			$this->test_antiduplicate = false;
			
			// Hook for doing other actions before the import
			do_action('fgs2wp_pre_import_news');

			do {
				if ( $this->import_stopped() ) {
					break;
				}
				$posts = $this->get_news($this->chunks_size); // Get the Spip news
				$posts_count = count($posts);

				if ( is_array($posts) ) {
					foreach ( $posts as $post ) {
						$new_post_id = $this->import_one_news($post);
						if ( $new_post_id === false ) {
							return false;
						}
						// Hook for doing other actions after importing the post
						do_action('fgs2wp_post_import_post', $new_post_id, $post, 'breve');
					}
				}
				$this->progressbar->increment_current_count($posts_count);
			} while ( ($posts != null) && ($posts_count > 0) );

			if ( !$this->import_stopped() ) {
				// Hook for doing other actions after the import
				do_action('fgs2wp_post_import_news');
			}

			return true;
		}

		/**
		 * Import a news (breve)
		 * 
		 * @since 2.0.0
		 * 
		 * @param array $post Post data
		 * @return int new post ID | false | WP_Error
		 */
		public function import_one_news($post) {
			$object_type = 'breve';
			
			$post['titre'] = FG_Spip_to_WordPress_Tools::fix_encoding($post['titre']);
			$post['texte'] = $this->convert_spip1_longblob($post['texte']); // SPIP 1.x LONGBLOB
			$post['texte'] = FG_Spip_to_WordPress_Tools::fix_encoding($post['texte']);
			
			// Anti-duplicate
			if ( !$this->test_antiduplicate ) {
				sleep(2);
				$test_post_id = $this->get_wp_post_id_from_spip_news_id($post['id']);
				if ( !empty($test_post_id) ) {
					$this->display_admin_error(__('The import process is still running. Please wait before running it again.', 'fg-spip-to-wp'));
					return false;
				}
				$this->test_antiduplicate = true;
			}

			// SPIP 2.0 fixes
			if ( version_compare($this->spip_version, '3', '<') ) {
				$post['titre'] = $this->remove_id($post['titre']); // Remove the ID from the title
			}

			// Hook for modifying the Spip post before processing
			$post = apply_filters('fgs2wp_pre_process_post', $post, $object_type);

			// Date
			$post_date = $this->sanitize_date($post['date_heure']);

			$content = $post['texte'];

			// Medias
			if ( !$this->plugin_options['skip_media'] ) {
				// Featured image
				$featured_image = $this->get_featured_image($post['id'], $object_type);
				list($featured_image, $post) = apply_filters('fgs2wp_pre_import_media', array($featured_image, $post));
				$img_featured_image = '';
				if ( !empty($featured_image) ) {
					$img_featured_image = '<img src="' . $featured_image . '" />';
				}

				// Replace documents shortcodes
				$content = $this->replace_document_shortcodes($content);

				// Import media
				$result = $this->import_media_from_content($img_featured_image . $content, $post_date);
				$post_media = $result['media'];
				$this->media_count += $result['media_count'];

				// Add the logo into the content
				if ( ($this->plugin_options['logo'] != 'as_featured') ) {
					$content = '<p>' . $img_featured_image . '</p>' . $content;
				}
			} else {
				// Skip media
				$post_media = array();
			}

			// Category
			$categories_ids = $this->get_wp_category_ids($post['id_rubrique'], $this->imported_categories);
			
			// Process content
			$content = $this->process_content($content, $post_media);

			// Insert the post
			$new_post = array(
				'post_category'		=> $categories_ids,
				'post_content'		=> $content,
				'post_excerpt'		=> '',
				'post_date'			=> $post_date,
				'post_status'		=> $this->get_status($post['statut']),
				'post_title'		=> $post['titre'],
				'post_name'			=> sanitize_title($post['titre']),
				'post_type'			=> 'post',
			);

			// Hook for modifying the WordPress post just before the insert
			$new_post = apply_filters('fgs2wp_pre_insert_post', $new_post, $post, $object_type);

			$new_post_id = wp_insert_post($new_post, true);
			
			// Increment the Spip last imported post ID
			update_option('fgs2wp_last_spip_news_id', $post['id']);
			
			if ( is_wp_error($new_post_id) ) {
				$this->display_admin_error(sprintf(__('Article #%d:', 'fg-spip-to-wp'), $post['id']) . ' ' . $new_post_id->get_error_message());
			} else {
				// Add links between the post and its medias
				$this->add_post_media($new_post_id, $new_post, $post_media, $this->plugin_options['logo'] != 'in_content');

				// Add the Spip ID as a post meta in order to modify links after
				add_post_meta($new_post_id, '_fgs2wp_old_news_id', $post['id'], true);

				// Add the extra SPIP fields
				if ( !empty($post['lien_titre']) ) {
					add_post_meta($new_post_id, 'lien_titre', $post['lien_titre'], true);
				}
				if ( !empty($post['lien_url']) ) {
					add_post_meta($new_post_id, 'lien_url', $post['lien_url'], true);
				}

				$this->posts_count++;

				// Hook for doing other actions after inserting the post
				do_action('fgs2wp_post_insert_post', $new_post_id, $post, $object_type);
			}
			
			return $new_post_id;
		}
		
		/**
		 * Get the WordPress status from the SPIP status
		 * 
		 * @since 1.9.0
		 * 
		 * @param string $spip_status SPIP status
		 * @return string WordPress status
		 */
		public function get_status($spip_status) {
			switch ( $spip_status ) {
				case 'publie': // published
					$status = 'publish';
					break;
				case 'prop': // pending
					$status = 'pending';
					break;
				default:
					$status = 'draft';
			}
			return $status;
		}
		
		/**
		 * Remove the ID at the beginning of a string
		 * 
		 * @param string $string String
		 * @return string String
		 */
		public function remove_id($string) {
			$result = preg_replace('/^\d+\. /', '', $string);
			return $result;
		}
		
		/**
		 * Replace the articles shortcodes (art, br) in the post content
		 * 
		 * @since 2.30.0
		 * 
		 * @param string $content Content
		 * @return string Content
		 */
		private function replace_articles_shortcodes($content) {
			$matches = array();
			// Replace the shortcodes like [anchor_text->art99] or [anchor_text->br99]
			if ( preg_match_all('#\[(.*?)->(art|br)(\d+)\]#', $content, $matches, PREG_SET_ORDER) > 0 ) {
				foreach ($matches as $match ) {
					$anchor_text = $match[1];
					$short_object_type = $match[2]; // art | br
					$id = $match[3];
					$object_type = ($short_object_type == 'br')? 'breve' : 'article';
					if ( empty($anchor_text) ) {
						$anchor_text = $this->get_article_or_news_title($id, $object_type);
					}
					$replacement = '<a href="' . $object_type . $id . '.html">' . $anchor_text . '</a>';
					$content = preg_replace('#' . preg_quote($match[0]) . '#', $replacement, $content);
				}
			}
			return $content;
		}
		
		/**
		 * Get the title of the article (or the news)
		 * 
		 * @since 2.30.0
		 * 
		 * @param int $id Object ID
		 * @param string $object_type Object type
		 * @return string Title
		 */
		private function get_article_or_news_title($id, $object_type) {
			if ( $object_type == 'br' ) {
				$title = $this->get_news_title($id);
			} else {
				$title = $this->get_article_title($id);
			}
			return $title;
		}
		
		/**
		 * Get a news title
		 * 
		 * @since 2.30.0
		 * 
		 * @param int $id News ID
		 * @return string Title
		 */
		private function get_news_title($id) {
			$title = 'Breve ' . $id;
			$prefix = $this->plugin_options['prefix'];
			$sql = "
				SELECT titre
				FROM ${prefix}breves b
				WHERE b.id_breve = '$id'
				LIMIT 1
			";
			$result = $this->spip_query($sql);
			if ( count($result) > 0 ) {
				$title = $result[0]['titre'];
			}
			return $title;
		}
		
		/**
		 * Get an article title
		 * 
		 * @since 2.30.0
		 * 
		 * @param int $id Article ID
		 * @return string Title
		 */
		private function get_article_title($id) {
			$title = 'Article ' . $id;
			$prefix = $this->plugin_options['prefix'];
			$sql = "
				SELECT titre
				FROM ${prefix}articles a
				WHERE a.id_article = '$id'
				LIMIT 1
			";
			$result = $this->spip_query($sql);
			if ( count($result) > 0 ) {
				$title = $result[0]['titre'];
			}
			return $title;
		}
		
		/**
		 * Replace the documents shortcodes (doc, img, emb, pdf) in the post content
		 * @param string $content Content
		 * @return string Content
		 */
		private function replace_document_shortcodes($content) {
			$matches = array();
			$matches_align = array();
			// Import the medias that use the SPIP shortcodes <doc>, <img>, <emb> or <pdf>
			if ( preg_match_all('#<(doc|img|emb|pdf)(\d+)(\|(.*?))?>#', $content, $matches, PREG_SET_ORDER) > 0 ) {
				foreach ($matches as $match ) {
//					$doc_embed_type = $match[1]; // doc | img | emb | pdf
					$doc_id = $match[2];
					$doc_align = isset($match[4])? $match[4]: '';
					$document = $this->get_document($doc_id);
					if ( !empty($document) ) {
						$filename = $document['fichier'];
						if ( !preg_match('/^http/', $document['fichier']) ) {
							$filename = $this->media_path . $filename;
						}
						if ( preg_match('/^txt=(.*)/', $doc_align, $matches_align) ) {
							$doc_title = $matches_align[1];
						} elseif ( !empty($document['titre']) ) {
							$doc_title = $document['titre'];
						} else {
							$doc_title = basename($document['fichier']);
						}
						$filetype = wp_check_filetype($filename);
						
						// Description
						$description = !empty($document['descriptif'])? ' data-description="' . $document['descriptif'] . '"' : '';
						
						if ( preg_match('/image/', $filetype['type']) ) {
							// Image
							// Alignment
							$alignment = '';
							if ( !empty($doc_align) ) {
								$alignment = ' align="' . $doc_align . '"';
							}
							if ( !empty($document['titre']) ) {
								// With caption
								$replacement = '<img src="' . $filename . '" alt="' . $doc_title . '" title="' . $document['titre'] . '" class="caption"' . $description . $alignment . ' />';
							} else {
								$replacement = '<img src="' . $filename . '" alt="' . $doc_title . '"' . $description . $alignment . ' />';
							}
						} elseif ( preg_match('#^https://www.youtube.com#', $filename) ) {
							// Embed YouTube video
							$replacement = '[embed]' . $filename . '[/embed]';
						} else {
							// Not an image
							$replacement = '<a href="' . $filename . '"' . $description . '>' . $doc_title . '</a>';
						}
						$content = preg_replace('#' . preg_quote($match[0]) . '#', $replacement, $content);
					}
				}
			}
			
			// Import the medias that use the SPIP shortcodes [anchor_text->img]
			if ( preg_match_all('#\[(.*?)->(doc|img|emb|pdf)(\d+)\]#', $content, $matches, PREG_SET_ORDER) > 0 ) {
				foreach ($matches as $match ) {
					$anchor_text = $match[1];
//					$doc_embed_type = $match[2]; // doc | img | emb | pdf
					$doc_id = $match[3];
					$document = $this->get_document($doc_id);
					if ( !empty($document) ) {
						$filename = $this->media_path . $document['fichier'];
						// Description
						$description = !empty($document['descriptif'])? ' data-description="' . $document['descriptif'] . '"' : '';
						
						$replacement = '<a href="' . $filename . '"' . $description . '>' . $anchor_text . '</a>';
						$content = preg_replace('#' . preg_quote($match[0]) . '#', $replacement, $content);
					}
				}
			}
			return $content;
		}
		
		/**
		 * Get the matching WP category ID from a SPIP category
		 * 
		 * @since 2.5.0
		 * 
		 * @param int $category_id SPIP category ID
		 * @param array $imported_categories Mapping table of SPIP and WP categories IDs
		 * @return array List of categories IDs
		 */
		public function get_wp_category_ids($category_id, $imported_categories) {
			$categories_ids = array();
			if ( array_key_exists($category_id, $imported_categories) ) {
				$categories_ids[] = $imported_categories[$category_id];
			}
			if ( count($categories_ids) == 0 ) {
				$categories_ids[] = 1; // default category
			}
			return $categories_ids;
		}
		
		/**
		 * Stop the import
		 * 
		 */
		public function stop_import() {
			update_option('fgs2wp_stop_import', true);
		}
		
		/**
		 * Test if the import needs to stop
		 * 
		 * @return boolean Import needs to stop or not
		 */
		public function import_stopped() {
			return get_option('fgs2wp_stop_import');
		}
		
		/**
		 * Get Spip categories
		 *
		 * @param int $limit Number of categories max
		 * @return array of Categories
		 */
		protected function get_categories($limit=1000) {
			$categories = array();

			$prefix = $this->plugin_options['prefix'];
			$last_category_id = (int)get_option('fgs2wp_last_category_id'); // to restore the import where it left
			$sql = "
				SELECT r.id_rubrique, r.id_parent, r.titre, r.descriptif, r.texte
				FROM ${prefix}rubriques r
				WHERE r.id_rubrique > '$last_category_id'
				ORDER BY r.id_rubrique
				LIMIT $limit
			";
			$sql = apply_filters('fgs2wp_get_categories_sql', $sql, $prefix);
			$categories = $this->spip_query($sql);
			$categories = apply_filters('fgs2wp_get_categories', $categories);

			return $categories;
		}

		/**
		 * Get Spip articles
		 *
		 * @param int $limit Number of articles max
		 * @return array of articles
		 */
		protected function get_articles($limit=1000) {
			$articles = array();

			$last_spip_article_id = (int)get_option('fgs2wp_last_spip_article_id'); // to restore the import where it left
			$prefix = $this->plugin_options['prefix'];

			// Hooks for adding extra cols and extra joins
			$extra_cols = apply_filters('fgs2wp_get_posts_add_extra_cols', '', 'article');
			$extra_joins = apply_filters('fgs2wp_get_posts_add_extra_joins', '', 'article');

			$sql = "
				SELECT a.id_article AS id, a.titre, a.id_rubrique, a.chapo, a.texte, a.date, a.statut, a.visites, a.accepter_forum 
				$extra_cols
				FROM ${prefix}articles a
				$extra_joins
				WHERE a.statut NOT IN ('refuse', 'poubelle') -- don't get the cancelled and the removed articles
				AND a.id_article > '$last_spip_article_id'
				ORDER BY a.id_article
				LIMIT $limit
			";
			$sql = apply_filters('fgs2wp_get_posts_sql', $sql, $prefix, $extra_cols, $extra_joins, $last_spip_article_id, $limit);
			
			$articles = $this->spip_query($sql);
			return $articles;
		}

		/**
		 * Get Spip news
		 *
		 * @param int $limit Number of news max
		 * @return array of news
		 */
		protected function get_news($limit=1000) {
			$news = array();

			$last_spip_news_id = (int)get_option('fgs2wp_last_spip_news_id'); // to restore the import where it left
			$prefix = $this->plugin_options['prefix'];

			// Hooks for adding extra cols and extra joins
			$extra_cols = apply_filters('fgs2wp_get_posts_add_extra_cols', '', 'breve');
			$extra_joins = apply_filters('fgs2wp_get_posts_add_extra_joins', '', 'breve');

			$sql = "
				SELECT b.id_breve AS id, b.titre, b.id_rubrique, b.texte, b.date_heure, b.statut, b.lien_titre, b.lien_url
				$extra_cols
				FROM ${prefix}breves b
				$extra_joins
				WHERE b.statut NOT IN ('refuse', 'poubelle') -- don't get the cancelled and the removed news
				AND b.id_breve > '$last_spip_news_id'
				ORDER BY b.id_breve
				LIMIT $limit
			";
			$sql = apply_filters('fgs2wp_get_posts_sql', $sql, $prefix, $extra_cols, $extra_joins, $last_spip_news_id, $limit);
			
			$news = $this->spip_query($sql);
			return $news;
		}

		/**
		 * Get the featured image of an article or from a news
		 * 
		 * @param int $post_id
		 * @param string $object_type article | breve
		 * @return string Image path
		 */
		protected function get_featured_image($post_id, $object_type) {
			$images_path = trailingslashit($this->get_media_root_path()) . $this->media_path;
			
			// Object type
			switch ( $object_type ) {
				case 'article': $prefix = 'arton'; break;
				case 'breve': $prefix = 'breveon'; break;
				default: return ''; // unknown type
			}
			
			// Extensions
			$extensions = array('jpg', 'JPG', 'png', 'PNG', 'gif', 'GIF');
			foreach ( $extensions as $extension ) {
				$image_file_path = $images_path . $prefix . $post_id . '.' . $extension;
				if ( $this->file_exists($image_file_path) ) {
					return $image_file_path;
				}
			}
			return '';
		}
		
		/**
		 * Get the media root path
		 * 
		 * @since 2.3.0
		 * 
		 * @return string Media root path
		 */
		public function get_media_root_path() {
			$path = '';
			switch ( $this->plugin_options['media_import_method'] ) {
				case 'http':
					$path = $this->plugin_options['url'];
					break;
				case 'local':
					$path = $this->plugin_options['root_directory'];
					break;
			}
			return $path;
		}
		
		/**
		 * Test if a file exists
		 * 
		 * @since 2.3.0
		 * 
		 * @param string $filePath
		 * @return boolean True if the file exists
		 */
		public function file_exists($filePath) {
			switch ( $this->plugin_options['media_import_method'] ) {
				case 'http':
					return $this->url_exists($filePath);
				case 'local':
					return file_exists($filePath);
			} 
		}
		
		/**
		 * Test if a remote file exists
		 * 
		 * @param string $filePath
		 * @return boolean True if the file exists
		 */
		public function url_exists($filePath) {
			$url = str_replace(' ', '%20', $filePath);
			
			// Try the get_headers method
			$headers = @get_headers($url);
			$result = preg_match("/200/", $headers[0]);
			
			if ( !$result && strpos($filePath, 'https:') !== 0 ) {
				// Try the fsock method
				$url = str_replace('http://', '', $url);
				if ( strstr($url, '/') ) {
					$url = explode('/', $url, 2);
					$url[1] = '/' . $url[1];
				} else {
					$url = array($url, '/');
				}

				$fh = fsockopen($url[0], 80);
				if ( $fh ) {
					fputs($fh,'GET ' . $url[1] . " HTTP/1.1\nHost:" . $url[0] . "\n");
					fputs($fh,"User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.94 Safari/537.36\n\n");
					$response = fread($fh, 22);
					fclose($fh);
					$result = (strpos($response, '200') !== false);
				} else {
					$result = false;
				}
			}
			
			return $result;
		}
		
		/**
		 * Get the image path
		 * 
		 * @return string Image path
		 */
		public function get_image_path() {
			$dir_img = $this->get_spip_meta('dir_img');
			if ( empty($dir_img) ) {
				$dir_img = 'IMG/';
			}
			return $dir_img;
		}
		
		/**
		 * Get the SPIP version
		 * 
		 * @return string SPIP version
		 */
		private function get_spip_version() {
			$version = 0;
			$raw_plugin_info = $this->get_spip_meta('plugin');
			if ( strpos($raw_plugin_info, 'a:') !== false ) {
				$plugin_info = @unserialize($raw_plugin_info);
				if ( !$plugin_info ) {
					$plugin_info = @unserialize(utf8_decode($raw_plugin_info));
				}
				$version = isset($plugin_info['SPIP']['version'])? $plugin_info['SPIP']['version']: 0;
			} else {
				$version_installee = $this->get_spip_meta('version_installee');
				$version = !empty($version_installee)? $version_installee: 0;
			}
			return $version;
		}
		
		/**
		 * Get the meta value from the SPIP meta table
		 * 
		 * @param string $meta_key
		 * @return string meta value
		 */
		public function get_spip_meta($meta_key) {
			$meta_value = '';

			$prefix = $this->plugin_options['prefix'];
			$sql = "
				SELECT m.valeur
				FROM ${prefix}meta m
				WHERE m.nom = '$meta_key'
				LIMIT 1
			";
			$result = $this->spip_query($sql);
			if ( isset($result[0]['valeur']) ) {
				$meta_value = $result[0]['valeur'];
			}
			return $meta_value;
		}
		
		/**
		 * Test if the texts are encoded as blob
		 * 
		 * @return bool
		 */
		private function is_text_encoded_as_blob() {
			global $spip_db;
			$blob_encoded = false;
			
			$prefix = $this->plugin_options['prefix'];
			$table = 'articles';
			$column = 'texte';
			switch ( $this->plugin_options['driver'] ) {
				case 'mysql':
					$sql = "SHOW COLUMNS FROM ${prefix}${table} LIKE '$column'";
					break;
				case 'sqlite':
					$sql = "PRAGMA table_info(${prefix}${table})";
					break;
			}
			$query = $spip_db->query($sql, PDO::FETCH_ASSOC);
			if ( $query !== false ) {
				if ( $this->plugin_options['driver'] == 'sqlite' ) {
					// SQLite
					$result = $query->fetchAll();
					foreach ( $result as $row ) {
						if ( isset($row['name']) && ($row['name'] == $column) ) {
							if ( preg_match('/blob/', $row['type']) ) {
								$blob_encoded = true;
							}
							break;
						}
					}
				} else {
					// MySQL
					$result = $query->fetch();
					if ( isset($result['Type']) && preg_match('/blob/', $result['Type']) ) {
						$blob_encoded = true;
					}
				}
			}
			return $blob_encoded;
		}
		
		/**
		 * Import post medias from content
		 *
		 * @param string $content post content
		 * @param date $post_date Post date (for storing media)
		 * @param array $options Options
		 * @return array:
		 * 		array media: Medias imported
		 * 		int media_count:   Medias count
		 */
		public function import_media_from_content($content, $post_date, $options=array()) {
			$media = array();
			$media_count = 0;
			$matches = array();
			$alt_matches = array();
			$title_matches = array();
			$description_matches = array();
			
			if ( preg_match_all('#<(img|a)(.*?)(src|href)="(.*?)"(.*?)>#', $content, $matches, PREG_SET_ORDER) > 0 ) {
				if ( is_array($matches) ) {
					foreach ($matches as $match ) {
						$filename = $match[4];
						$other_attributes = $match[2] . $match[5];
						// Image Alt
						$image_alt = '';
						if (preg_match('#alt="(.*?)"#', $other_attributes, $alt_matches) ) {
							$image_alt = wp_strip_all_tags(stripslashes($alt_matches[1]), true);
						}
						// Image caption
						$image_caption = '';
						if (preg_match('#title="(.*?)"#', $other_attributes, $title_matches) ) {
							$image_caption = $title_matches[1];
						}
						// Image description
						$image_description = '';
						if (preg_match('#data-description="(.*?)"#', $other_attributes, $description_matches) ) {
							$image_description = $description_matches[1];
						}
						$attachment_id = $this->import_media($image_alt, $filename, $post_date, $options, $image_caption, $image_description);
						if ( $attachment_id !== false ) {
							$media_count++;
							$media[$filename] = $attachment_id;
						}
					}
				}
			}
			return array(
				'media'			=> $media,
				'media_count'	=> $media_count
			);
		}
		
		/**
		 * Import a media
		 *
		 * @param string $name Image name
		 * @param string $filename Image URL
		 * @param date $date Date
		 * @param array $options Options
		 * @param string $image_caption Image caption
		 * @param string $image_description Image description
		 * @return int attachment ID or false
		 */
		public function import_media($name, $filename, $date, $options=array(), $image_caption='', $image_description='') {
			if ( $date == '0000-00-00 00:00:00' ) {
				$date = date('Y-m-d H:i:s');
			}
			$import_external = ($this->plugin_options['import_external'] == 1) || (isset($options['force_external']) && $options['force_external'] );
			
			$filename = urldecode(html_entity_decode($filename)); // for filenames with spaces or accents
			
			$filetype = wp_check_filetype($filename);
			if ( empty($filetype['type']) || ($filetype['type'] == 'text/html') ) { // Unrecognized file type
				return false;
			}
			
			$media_root_path = $this->get_media_root_path();

			// Upload the file from the Spip web site to WordPress upload dir
			if ( preg_match('/^http/', $filename) ) {
				if ( $import_external || // External file 
					preg_match('#^' . $media_root_path . '#', $filename) // Local file
				) {
					$old_filename = $filename;
				} else {
					return false;
				}
			} elseif ( strpos($filename, $media_root_path) !== 0 ) { // Don't add the media_root_path if it has already been added
				if ( strpos($filename, '/') === 0 ) { // Avoid a double slash
					$old_filename = untrailingslashit($media_root_path) . $filename;
				} else {
					$old_filename = trailingslashit($media_root_path) . $filename;
				}
			} else {
				$old_filename = $filename;
			}
			if ( $this->plugin_options['media_import_method'] == 'http' ) {
				$old_filename = str_replace(" ", "%20", $old_filename); // for filenames with spaces
			}
			$img_dir = strftime('%Y/%m', strtotime($date));
			$uploads = wp_upload_dir($img_dir);
			$new_upload_dir = $uploads['path'];

			$new_filename = $filename;
			if ( $this->plugin_options['import_duplicates'] == 1 ) {
				// Images with duplicate names
				$new_filename = preg_replace('#.*'. untrailingslashit($this->media_path) . '/#', '', $new_filename);
				$new_filename = str_replace('http://', '', $new_filename);
				$new_filename = str_replace('/', '_', $new_filename);
			}

			$basename = basename($new_filename);
			$basename = sanitize_file_name($basename);
			$new_full_filename = $new_upload_dir . '/' . $basename;

			if ( $this->plugin_options['force_media_import'] || !file_exists($new_full_filename) || (filesize($new_full_filename) == 0) ) {
//				print "Copy \"$old_filename\" => $new_full_filename<br />";
				switch ( $this->plugin_options['media_import_method'] ) {
					case 'http':
						// HTTP remote copy
						if ( ! @$this->remote_copy($old_filename, $new_full_filename) ) {
							$error = error_get_last();
							$error_message = $error['message'];
							$this->display_admin_error("Can't copy $old_filename to $new_full_filename : $error_message");
							return false;
						}
						break;
					case 'local':
						// Local copy
						if ( !copy($old_filename, $new_full_filename) ) {
							$error = error_get_last();
							$error_message = $error['message'];
							$this->display_admin_error("Can't copy $old_filename to $new_full_filename : $error_message");
							return false;
						}
						break;
				}
			}

			$post_title = !empty($name)? $name : preg_replace('/\.[^.]+$/', '', $basename);
			
			// Image Alt
			$image_alt = '';
			if ( !empty($name) ) {
				$image_alt = wp_strip_all_tags(stripslashes($name), true);
			}
			
			// GUID
			$upload_dir = wp_upload_dir();
			$guid = str_replace($upload_dir['basedir'], $upload_dir['baseurl'], $new_full_filename);
			
			$attachment_id = $this->insert_attachment($post_title, $basename, $new_full_filename, $guid, $date, $filetype['type'], $image_alt, $image_caption, $image_description);
			return $attachment_id;
		}
		
		/**
		 * Check if the attachment exists in the database
		 *
		 * @param string $name
		 * @return object Post
		 */
		private function get_attachment_from_name($name) {
			$name = preg_replace('/\.[^.]+$/', '', basename($name));
			$r = array(
				'name'			=> $name,
				'post_type'		=> 'attachment',
				'numberposts'	=> 1,
			);
			$posts_array = get_posts($r);
			if ( is_array($posts_array) && (count($posts_array) > 0) ) {
				return $posts_array[0];
			}
			else {
				return false;
			}
		}

		/**
		 * Save the attachment and generates its metadata
		 * 
		 * @param string $attachment_title Attachment name
		 * @param string $basename Original attachment filename
		 * @param string $new_full_filename New attachment filename with path
		 * @param string $guid GUID
		 * @param date $date Date
		 * @param string $filetype File type
		 * @param string $image_alt Image description
		 * @param string $image_caption Image caption
		 * @param string $image_description Image description
		 * @return int|false Attachment ID or false
		 */
		public function insert_attachment($attachment_title, $basename, $new_full_filename, $guid, $date, $filetype, $image_alt='', $image_caption='', $image_description='') {
			$post_name = 'attachment-' . sanitize_title($attachment_title); // Prefix the post name to avoid wrong redirect to a post with the same name
			
			// If the attachment does not exist yet, insert it in the database
			$attachment_id = 0;
			$attachment = $this->get_attachment_from_name($post_name);
			if ( $attachment ) {
				$attached_file = basename(get_attached_file($attachment->ID));
				if ( $attached_file == $basename ) { // Check if the filename is the same (in case of the legend is not unique)
					$attachment_id = $attachment->ID;
				}
			}
			if ( $attachment_id == 0 ) {
				$attachment_data = array(
					'guid'				=> $guid, 
					'post_date'			=> $date,
					'post_mime_type'	=> $filetype,
					'post_name'			=> $post_name,
					'post_title'		=> $attachment_title,
					'post_status'		=> 'inherit',
					'post_content'		=> $image_description,
					'post_excerpt'		=> $image_caption,
				);
				$attachment_id = wp_insert_attachment($attachment_data, $new_full_filename);
				add_post_meta($attachment_id, '_fgs2wp_imported', 1, true); // To delete the imported attachments
			}
			
			if ( !empty($attachment_id) ) {
				if ( preg_match('/(image|audio|video)/', $filetype) ) { // Image, audio or video
					// you must first include the image.php file
					// for the function wp_generate_attachment_metadata() to work
					require_once(ABSPATH . 'wp-admin/includes/image.php');
					$attach_data = wp_generate_attachment_metadata( $attachment_id, $new_full_filename );
					wp_update_attachment_metadata($attachment_id, $attach_data);

					// Image Alt
					if ( !empty($image_alt) ) {
						update_post_meta($attachment_id, '_wp_attachment_image_alt', addslashes($image_alt)); // update_post_meta expects slashed
					}
				}
				return $attachment_id;
			} else {
				return false;
			}
		}
		
		/**
		 * Get a document by its ID
		 * 
		 * @param int $doc_id SPIP document ID
		 * @return array document data
		 */
		private function get_document($doc_id) {
			$document = array();
			$prefix = $this->plugin_options['prefix'];

			$sql = "
				SELECT d.id_document, d.fichier, d.titre, d.descriptif, d.taille, d.date
				FROM ${prefix}documents d
				WHERE d.id_document = '$doc_id'
				LIMIT 1
			";
			$documents = $this->spip_query($sql);
			if ( isset($documents[0]) ) {
				$document = $documents[0];
			}
			return $document;
		}
		
		/**
		 * Process the post content
		 *
		 * @param string $content Post content
		 * @param array $post_media Post medias
		 * @return string Processed post content
		 */
		public function process_content($content, $post_media=array()) {

			if ( !empty($content) ) {
				$content = $this->replace_articles_shortcodes($content);

				$content = $this->spip_format($content);
				
				$content = preg_replace("/\\\\+'/", "'", $content); // Fix the multiple escapes of '
				
				// Replace media URLs with the new URLs
				$content = $this->process_content_media_links($content, $post_media);

				// Replace video links
				$content = $this->process_video_links($content);

				// For importing backslashes
				$content = addslashes($content);
				
				$content = apply_filters('fgs2wp_process_content', $content);
			}

			return $content;
		}

		/**
		 * Replace media URLs with the new URLs
		 *
		 * @param string $content Post content
		 * @param array $post_media Post medias
		 * @return string Processed post content
		 */
		private function process_content_media_links($content, $post_media) {
			$matches = array();
			$matches_caption = array();

			if ( is_array($post_media) ) {

				// Get the attachments attributes
				$attachments_found = false;
				$medias = array();
				foreach ( $post_media as $old_filename => $attachment_id ) {
					$media = array();
					$media['attachment_id'] = $attachment_id;
					$media['url_old_filename'] = urlencode($old_filename); // for filenames with spaces
					if ( preg_match('/image/', get_post_mime_type($attachment_id)) ) {
						// Image
						$image_src = wp_get_attachment_image_src($attachment_id, 'full');
						$media['new_url'] = $image_src[0];
						$media['width'] = $image_src[1];
						$media['height'] = $image_src[2];
					} else {
						// Other media
						$media['new_url'] = wp_get_attachment_url($attachment_id);
					}
					$medias[$old_filename] = $media;
					$attachments_found = true;
				}
				if ( $attachments_found ) {

					// Remove the links from the content
					$this->post_link_count = 0;
					$this->post_link = array();
					$content = preg_replace_callback('#<(a) (.*?)(href)=(.*?)</a>#i', array($this, 'remove_links'), $content);
					$content = preg_replace_callback('#<(img) (.*?)(src)=(.*?)>#i', array($this, 'remove_links'), $content);

					// Process the stored medias links
					foreach ($this->post_link as &$link) {

						$new_link = $link['old_link'];
						$alignment = '';
						if ( preg_match('/(align="|float: )(left|right|center)/', $new_link, $matches) ) {
							$alignment = 'align' . $matches[2];
						}
						if ( preg_match_all('#(src|href)="(.*?)"#i', $new_link, $matches, PREG_SET_ORDER) ) {
							$caption = '';
							foreach ( $matches as $match ) {
								$old_filename = $match[2];
								$link_type = ($match[1] == 'src')? 'img': 'a';
								if ( array_key_exists($old_filename, $medias) ) {
									$media = $medias[$old_filename];
									if ( array_key_exists('new_url', $media) ) {
										if ( (strpos($new_link, $old_filename) > 0) || (strpos($new_link, $media['url_old_filename']) > 0) ) {
											// URL encode the filename
											$new_filename = basename($media['new_url']);
											$encoded_new_filename = rawurlencode($new_filename);
											$new_url = str_replace($new_filename, $encoded_new_filename, $media['new_url']);
											$new_link = preg_replace('#(' . preg_quote($old_filename) . '|' . preg_quote($media['url_old_filename']) . ')#', $new_url, $new_link, 1);

											if ( $link_type == 'img' ) { // images only
												// Define the width and the height of the image if it isn't defined yet
												if ((strpos($new_link, 'width=') === false) && (strpos($new_link, 'height=') === false)) {
													$width_assertion = isset($media['width']) && ($media['width'] != 0)? ' width="' . $media['width'] . '"' : '';
													$height_assertion = isset($media['height']) && ($media['height'] != 0)? ' height="' . $media['height'] . '"' : '';
												} else {
													$width_assertion = '';
													$height_assertion = '';
												}

												// Caption shortcode
												if ( preg_match('/class=".*caption.*?"/', $link['old_link']) ) {
													if ( preg_match('/title="(.*?)"/', $link['old_link'], $matches_caption) ) {
														$caption_value = str_replace('%', '%%', $matches_caption[1]);
														$align_value = ($alignment != '')? $alignment : 'alignnone';
														$caption = '[caption id="attachment_' . $media['attachment_id'] . '" align="' . $align_value . '"' . $width_assertion . ']%s' . $caption_value . '[/caption]';
													}
												}

												$align_class = ($alignment != '')? $alignment . ' ' : '';
												$new_link = preg_replace('#<img(.*?)( class="(.*?)")?(.*) />#', "<img$1 class=\"$3 " . $align_class . 'size-full wp-image-' . $media['attachment_id'] . "\"$4" . $width_assertion . $height_assertion . ' />', $new_link);
											}
										}
									}
								}
							}

							// Add the caption
							if ( $caption != '' ) {
								$new_link = sprintf($caption, $new_link);
							}
						}
						$link['new_link'] = $new_link;
					}

					// Reinsert the converted medias links
					$content = preg_replace_callback('#__fg_link_(\d+)__#', array($this, 'restore_links'), $content);
				}
			}
			return $content;
		}

		/**
		 * Remove all the links from the content and replace them with a specific tag
		 * 
		 * @param array $matches Result of the preg_match
		 * @return string Replacement
		 */
		private function remove_links($matches) {
			$this->post_link[] = array('old_link' => $matches[0]);
			return '__fg_link_' . $this->post_link_count++ . '__';
		}

		/**
		 * Restore the links in the content and replace them with the new calculated link
		 * 
		 * @param array $matches Result of the preg_match
		 * @return string Replacement
		 */
		private function restore_links($matches) {
			$link = $this->post_link[$matches[1]];
			$new_link = array_key_exists('new_link', $link)? $link['new_link'] : $link['old_link'];
			return $new_link;
		}

		/**
		 * Add a link between a media and a post (parent id + thumbnail)
		 *
		 * @param int $post_id Post ID
		 * @param array $post_data Post data
		 * @param array $post_media Post medias IDs
		 * @param boolean $set_featured_image Set the featured image?
		 */
		public function add_post_media($post_id, $post_data, $post_media, $set_featured_image=true) {
			$thumbnail_is_set = false;
			if ( is_array($post_media) ) {
				foreach ( $post_media as $attachment_id ) {
					$attachment = get_post($attachment_id);
					if ( !empty($attachment) ) {
						$attachment->post_parent = $post_id; // Attach the post to the media
						$attachment->post_date = $post_data['post_date'] ;// Define the media's date
						wp_update_post($attachment);

						// Set the featured image. If not defined, it is the first image of the content.
						if ( $set_featured_image && !$thumbnail_is_set ) {
							set_post_thumbnail($post_id, $attachment_id);
							$thumbnail_is_set = true;
						}
					}
				}
			}
		}

		/**
		 * Modify the video links
		 *
		 * @param string $content Content
		 * @return string Content
		 */
		private function process_video_links($content) {
			if ( strpos($content, '{"video"') !== false ) {
				$content = preg_replace('/(<p>)?{"video":"(.*?)".*?}(<\/p>)?/', "$2", $content);
			}
			return $content;
		}
		
		/**
		 * Modify the internal links of all posts
		 *
		 * @return array:
		 * 		int links_count: Links count
		 */
		private function modify_links() {
			$links_count = 0;
			$step = 1000; // to limit the results
			$offset = 0;
			$matches = array();

			// Set the list of previously imported categories
			$this->imported_categories = $this->get_term_metas_by_metakey('_fgs2wp_old_category_id');
			
			// Hook for doing other actions before modifying the links
			do_action('fgs2wp_pre_modify_links');

			do {
				$args = array(
					'numberposts'	=> $step,
					'offset'		=> $offset,
					'orderby'		=> 'ID',
					'order'			=> 'ASC',
					'post_type'		=> 'any',
					'post_status'	=> 'any',
				);
				$posts = get_posts($args);
				foreach ( $posts as $post ) {
					$post = apply_filters('fgs2wp_post_get_post', $post); // Used to translate the links
					$content = $post->post_content;
					if ( preg_match_all('#<a(.*?)href="(.*?)"(.*?)>#', $content, $matches, PREG_SET_ORDER) > 0 ) {
						if ( is_array($matches) ) {
							foreach ( $matches as $match ) {
								$link = $match[2];
								list($link_without_anchor, $anchor_link) = $this->split_anchor_link($link); // Split the anchor link
								// Is it an internal link ?
								if ( !empty($link_without_anchor) && $this->is_internal_link($link_without_anchor) ) {
									$new_link = '';
									if ( preg_match('/^rub(\d+)$/', $link_without_anchor, $matches) ) { // Is it a link to a category?
										$new_link = $this->get_category_link($matches[1], $post);
									} else {
										list($article_id, $object_type) = $this->find_article_id_in_link($link_without_anchor); // Is it a link to an article or to a news?
										if ( $article_id != 0 ) {
											$new_link = $this->get_article_link($article_id, $object_type, $post);
										}
									}
									if ( !empty($new_link) ) {
										if ( !empty($anchor_link) ) {
											$new_link .= '#' . $anchor_link;
										}
										$content = str_replace("href=\"$link\"", "href=\"$new_link\"", $content);
										// Update the post
										wp_update_post(array(
											'ID'			=> $post->ID,
											'post_content'	=> $content,
										));
										$links_count++;
									}
								}
							}
						}
					}
				}
				$offset += $step;
			} while ( ($posts != null) && (count($posts) > 0) );

			// Hook for doing other actions after modifying the links
			do_action('fgs2wp_post_modify_links');

			return array('links_count' => $links_count);
		}

		/**
		 * Test if the link is an internal link or not
		 *
		 * @since 2.36.3
		 * 
		 * @param string $link
		 * @return bool
		 */
		private function is_internal_link($link) {
			$result = (preg_match("#^".$this->plugin_options['url']."#", $link) > 0) ||
				(preg_match("#^(http|//)#", $link) == 0);
			return $result;
		}
		
		/**
		 * Find an article ID in a link
		 * 
		 * @param string $link Link
		 * @return array [Article ID, Object type]
		 */
		private function find_article_id_in_link($link) {
			$article_id = 0;
			$object_type = 'article';
			$matches = array();
			if ( is_numeric($link) ) {
				$article_id = $link;
			} elseif ( preg_match('/(article|breve)(\d+)/', $link, $matches)) { // article12.html or spip.php?article12 or breve12.html or spip.php?breve12
				$object_type = $matches[1];
				$article_id = $matches[2];
			} elseif ( preg_match('/id_(article|breve)=(\d+)/', $link, $matches)) { // spip.php?page=article&id_article=12 or spip.php?page=breve&id_breve=12
				$object_type = $matches[1];
				$article_id = $matches[2];
			}
			return array($article_id, $object_type);
		}
		
		/**
		 * Get the WordPress article link matching the SPIP article ID
		 * 
		 * @since 2.18.0
		 * 
		 * @param int $article_id SPIP article ID
		 * @param string $object_type article | breve
		 * @param array $post Post
		 * @return string New link
		 */
		private function get_article_link($article_id, $object_type, $post) {
			$new_link = '';
			if ( $object_type == 'breve' ) {
				// News
				$wp_post_id = $this->get_wp_post_id_from_spip_news_id($article_id);
			} else {
				// Article
				$wp_post_id = $this->get_wp_post_id_from_spip_article_id($article_id);
			}
			if ( !empty($wp_post_id) ) {
				$wp_post_id = apply_filters('fgs2wp_post_get_post_by_spip_id', $wp_post_id, $post); // Used to get the ID of the translated post
				$new_link = get_permalink($wp_post_id);
			}
			return $new_link;
		}
		
		/**
		 * Get the WordPress category link matching the SPIP category ID
		 * 
		 * @since 2.18.0
		 * 
		 * @param int $category_id SPIP Category ID
		 * @return string New link
		 */
		private function get_category_link($category_id) {
			$new_link = '';
			$wp_category_id = $this->get_wp_category_ids($category_id,  $this->imported_categories);
			if ( count($wp_category_id) > 0 ) {
				$new_link = get_category_link($wp_category_id[0]);
			}
			return $new_link;
		}
		
		/**
		 * Split a link by its anchor link
		 * 
		 * @param string $link Original link
		 * @return array(string link, string anchor_link) [link without anchor, anchor_link]
		 */
		private function split_anchor_link($link) {
			$pos = strpos($link, '#');
			if ( $pos !== false ) {
				// anchor link found
				$link_without_anchor = substr($link, 0, $pos);
				$anchor_link = substr($link, $pos + 1);
				return array($link_without_anchor, $anchor_link);
			} else {
				// anchor link not found
				return array($link, '');
			}
		}

		/**
		 * Copy a remote file
		 * in replacement of the copy function
		 * 
		 * @param string $url URL of the source file
		 * @param string $path destination file
		 * @return boolean
		 */
		public function remote_copy($url, $path) {
			$result = false;
			
			if ( !$this->plugin_options['force_media_import'] && file_exists($path) && (filesize($path) > 0) ) {
				// Don't download the file if already downloaded
				return true;
			}
			
			$response = wp_remote_get($url, array(
				'timeout'		=> $this->plugin_options['timeout'],
				'sslverify'		=> false,
				'user-agent'	=> 'Mozilla/5.0 AppleWebKit (KHTML, like Gecko) Chrome/ Safari/', // the default "WordPress..." user agent is rejected with some NGINX config
			)); // Uses WordPress HTTP API
			
			if ( is_wp_error($response) ) {
				trigger_error($response->get_error_message(), E_USER_WARNING);
			} elseif ( $response['response']['code'] != 200 ) {
				trigger_error($response['response']['message'], E_USER_WARNING);
			} else {
				$content_type = wp_remote_retrieve_header($response, 'content-type');
				if ( preg_match('/^text/', $content_type) ) {
					// Not a media
					trigger_error('Not a media', E_USER_WARNING);
				} else {
					file_put_contents($path, wp_remote_retrieve_body($response));
					$result = true;
				}
			}
			return $result;
		}

		/**
		 * Recount the items for a taxonomy
		 * 
		 * @return boolean
		 */
		private function terms_tax_count($taxonomy) {
			$terms = get_terms(array($taxonomy));
			// Get the term taxonomies
			$terms_taxonomies = array();
			foreach ( $terms as $term ) {
				$terms_taxonomies[] = $term->term_taxonomy_id;
			}
			if ( !empty($terms_taxonomies) ) {
				return wp_update_term_count_now($terms_taxonomies, $taxonomy);
			} else {
				return true;
			}
		}

		/**
		 * Recount the items for each category and tag
		 * 
		 * @return boolean
		 */
		private function terms_count() {
			$result = $this->terms_tax_count('category');
			$result |= $this->terms_tax_count('post_tag');
		}

		/**
		 * Returns the imported posts mapped with their Spip ID
		 *
		 * @return array of post IDs [spip_article_id => wordpress_post_id]
		 */
		public function get_imported_spip_articles() {
			global $wpdb;
			$posts = array();

			$sql = "SELECT post_id, meta_value FROM {$wpdb->postmeta} WHERE meta_key = '_fgs2wp_old_article_id'";
			$results = $wpdb->get_results($sql);
			foreach ( $results as $result ) {
				$posts[$result->meta_value] = $result->post_id;
			}
			ksort($posts);
			return $posts;
		}

		/**
		 * Returns the imported posts mapped with their Spip ID
		 *
		 * @return array of post IDs [spip_news_id => wordpress_post_id]
		 */
		public function get_imported_spip_news() {
			global $wpdb;
			$posts = array();

			$sql = "SELECT post_id, meta_value FROM {$wpdb->postmeta} WHERE meta_key = '_fgs2wp_old_news_id'";
			$results = $wpdb->get_results($sql);
			foreach ( $results as $result ) {
				$posts[$result->meta_value] = $result->post_id;
			}
			ksort($posts);
			return $posts;
		}

		/**
		 * Returns the imported users mapped with their Spip ID
		 *
		 * @return array of user IDs [spip_user_id => wordpress_user_id]
		 */
		public function get_imported_spip_users() {
			global $wpdb;
			$users = array();

			$sql = "SELECT user_id, meta_value FROM {$wpdb->usermeta} WHERE meta_key = '_fgs2wp_old_user_id'";
			$results = $wpdb->get_results($sql);
			foreach ( $results as $result ) {
				$users[$result->meta_value] = $result->user_id;
			}
			ksort($users);
			return $users;
		}

		/**
		 * Test if a column exists
		 *
		 * @param string $table Table name
		 * @param string $column Column name
		 * @return bool
		 */
		public function column_exists($table, $column) {
			global $spip_db;

			$cache_key = 'fgs2wp_column_exists:' . $table . '.' . $column;
			$found = false;
			$column_exists = wp_cache_get($cache_key, '', false, $found);
			if ( $found === false ) {
				$column_exists = false;
				try {
					$prefix = $this->plugin_options['prefix'];

					switch ( $this->plugin_options['driver'] ) {
						case 'mysql':
							$sql = "SHOW COLUMNS FROM ${prefix}${table} LIKE '$column'";
							break;
						case 'sqlite':
							$sql = "PRAGMA table_info(${prefix}${table})";
							break;
					}
					$query = $spip_db->query($sql, PDO::FETCH_ASSOC);
					if ( $query !== false ) {
						if ( $this->plugin_options['driver'] == 'sqlite' ) {
							// SQLite
							$result = $query->fetchAll();
							foreach ( $result as $row ) {
								if ( isset($row['name']) && ($row['name'] == $column) ) {
									$column_exists = true;
									break;
								}
							}
						} else {
							// MySQL
							$result = $query->fetch();
							$column_exists = !empty($result);
						}
					}
				} catch ( PDOException $e ) {}
				
				// Store the result in cache for the current request
				wp_cache_set($cache_key, $column_exists);
			}
			return $column_exists;
		}

		/**
		 * Test if a table exists
		 *
		 * @param string $table Table name
		 * @return bool
		 */
		public function table_exists($table) {
			global $spip_db;

			$cache_key = 'fgs2wp_table_exists:' . $table;
			$found = false;
			$table_exists = wp_cache_get($cache_key, '', false, $found);
			if ( $found === false ) {
				$table_exists = false;
				try {
					$prefix = $this->plugin_options['prefix'];

					switch ( $this->plugin_options['driver'] ) {
						case 'mysql':
							$sql = "SHOW TABLES LIKE '${prefix}${table}'";
							break;
						case 'sqlite':
							$sql = "SELECT name FROM sqlite_master WHERE type='table' AND name='${prefix}${table}';";
							break;
					}
					$query = $spip_db->query($sql, PDO::FETCH_ASSOC);
					if ( $query !== false ) {
						$result = $query->fetch();
						$table_exists = !empty($result);
					}
				} catch ( PDOException $e ) {}
				
				// Store the result in cache for the current request
				wp_cache_set($cache_key, $table_exists);
			}
			return $table_exists;
		}

		/**
		 * Get all the term metas corresponding to a meta key
		 * 
		 * @param string $meta_key Meta key
		 * @return array List of term metas: term_id => meta_value
		 */
		public function get_term_metas_by_metakey($meta_key) {
			global $wpdb;
			$metas = array();
			
			$sql = "SELECT term_id, meta_value FROM {$wpdb->termmeta} WHERE meta_key = '$meta_key'";
			$results = $wpdb->get_results($sql);
			foreach ( $results as $result ) {
				$metas[$result->meta_value] = $result->term_id;
			}
			ksort($metas);
			return $metas;
		}
		
		/**
		 * Returns the imported post ID corresponding to a SPIP article ID
		 *
		 * @param int $spip_id SPIP article ID
		 * @return int WordPress post ID
		 */
		public function get_wp_post_id_from_spip_article_id($spip_id) {
			$post_id = $this->get_wp_post_id_from_meta('_fgs2wp_old_article_id', $spip_id);
			return $post_id;
		}

		/**
		 * Returns the imported post ID corresponding to a SPIP news ID
		 *
		 * @param int $spip_id SPIP news ID
		 * @return int WordPress post ID
		 */
		public function get_wp_post_id_from_spip_news_id($spip_id) {
			$post_id = $this->get_wp_post_id_from_meta('_fgs2wp_old_news_id', $spip_id);
			return $post_id;
		}

		/**
		 * Returns the imported post ID corresponding to a meta key and value
		 *
		 * @param string $meta_key Meta key
		 * @param string $meta_value Meta value
		 * @return int WordPress post ID
		 */
		public function get_wp_post_id_from_meta($meta_key, $meta_value) {
			global $wpdb;

			$sql = "SELECT post_id FROM {$wpdb->postmeta} WHERE meta_key = '$meta_key' AND meta_value = '$meta_value' LIMIT 1";
			$post_id = $wpdb->get_var($sql);
			return $post_id;
		}

		/**
		 * Sanitize a date
		 * 
		 * @param date $date Date
		 * @return date
		 */
		public function sanitize_date($date) {
			$date = preg_replace('#-00#', '-01', $date); // For the dates having day = 00
			return $date;
		}
	}
}