<?php

/**

 * WordPress Administration Importer API.

 *

 * @package WordPress

 * @subpackage Administration

 */

/**

 * Retrieve list of importers.

 *

 * @since 2.0.0

 *

 * @return array

 */

function get_importers() {

	global $wp_importers;

	if ( is_array( $wp_importers ) ) {

		uasort( $wp_importers, '_usort_by_first_member' );

	}

	return $wp_importers;

}

/**

 * Sorts a multidimensional array by first member of each top level member

 *

 * Used by uasort() as a callback, should not be used directly.

 *

 * @since 2.9.0

 * @access private

 *

 * @param array $a

 * @param array $b

 * @return int

 */

function _usort_by_first_member( $a, $b ) {

	return strnatcasecmp( $a[0], $b[0] );

}

/**

 * Register importer for WordPress.

 *

 * @since 2.0.0

 *

 * @return WP_Error Returns WP_Error when $callback is WP_Error.

 */

function register_importer( $id, $name, $description, $callback ) {

	global $wp_importers;

	if ( is_wp_error( $callback ) )

		return $callback;

	$wp_importers[$id] = array ( $name, $description, $callback );

}

/**

 * Cleanup importer.

 *

 * Removes attachment based on ID.

 *

 * @since 2.0.0

 *

 * @param string $id Importer ID.

 */

function wp_import_cleanup( $id ) {

	wp_delete_attachment( $id );

}

/**

 * Handle importer uploading and add attachment.

 *

 * @since 2.0.0

 *

 * @return array Uploaded file's details on success, error message on failure

 */

function wp_import_handle_upload() {

	if ( ! isset( $_FILES['import'] ) ) {

		return array(

			'error' => __( 'File is empty. Please upload something more substantial. This error could also be caused by uploads being disabled in your php.ini or by post_max_size being defined as smaller than upload_max_filesize in php.ini.' )

		);

	}

	$overrides = array( 'test_form' => false, 'test_type' => false );

	$_FILES['import']['name'] .= '.txt';

	$upload = wp_handle_upload( $_FILES['import'], $overrides );

	if ( isset( $upload['error'] ) ) {

		return $upload;

	}

	// Construct the object array

	$object = array(

		'post_title' => basename( $upload['file'] ),

		'post_content' => $upload['url'],

		'post_mime_type' => $upload['type'],

		'guid' => $upload['url'],

		'context' => 'import',

		'post_status' => 'private'

	);

	// Save the data

	$id = wp_insert_attachment( $object, $upload['file'] );

	/*

	 * Schedule a cleanup for one day from now in case of failed

	 * import or missing wp_import_cleanup() call.

	 */

	wp_schedule_single_event( time() + DAY_IN_SECONDS, 'importer_scheduled_cleanup', array( $id ) );

	return array( 'file' => $upload['file'], 'id' => $id );

}

/**

 * Returns a list from WordPress.org of popular importer plugins.

 *

 * @since 3.5.0

 *

 * @return array Importers with metadata for each.

 */

function wp_get_popular_importers() {

	include( ABSPATH . WPINC . '/version.php' ); // include an unmodified $wp_version

	if ( ! $popular_importers ) {

		$response = wp_remote_get( $url, $options );

		$popular_importers = json_decode( wp_remote_retrieve_body( $response ), true );

			$popular_importers = false;

	}

	if ( is_array( $popular_importers ) ) {

		// If the data was received as translated, return it as-is.

		if ( $popular_importers['translated'] )

			return $popular_importers['importers'];

		foreach ( $popular_importers['importers'] as &$importer ) {

			$importer['description'] = translate( $importer['description'] );

			if ( $importer['name'] != 'WordPress' )

				$importer['name'] = translate( $importer['name'] );

		}

		return $popular_importers['importers'];

	}

	return array(

		// slug => name, description, plugin slug, and register_importer() slug

		'blogger' => array(

			'name' => __( 'Blogger' ),

			'plugin-slug' => 'blogger-importer',

			'importer-id' => 'blogger',

		),

		'wpcat2tag' => array(

			'name' => __( 'Categories and Tags Converter' ),

			'plugin-slug' => 'wpcat2tag-importer',

			'importer-id' => 'wp-cat2tag',

		),

		'livejournal' => array(

			'name' => __( 'LiveJournal' ),

			'plugin-slug' => 'livejournal-importer',

			'importer-id' => 'livejournal',

		),

		'movabletype' => array(

			'name' => __( 'Movable Type and TypePad' ),

			'plugin-slug' => 'movabletype-importer',

			'importer-id' => 'mt',

		),

		'opml' => array(

			'name' => __( 'Blogroll' ),

			'plugin-slug' => 'opml-importer',

			'importer-id' => 'opml',

		),

		'rss' => array(

			'name' => __( 'RSS' ),

			'plugin-slug' => 'rss-importer',

			'importer-id' => 'rss',

		),

		'tumblr' => array(

			'name' => __( 'Tumblr' ),

			'plugin-slug' => 'tumblr-importer',

			'importer-id' => 'tumblr',

		),

		'wordpress' => array(

			'name' => 'WordPress',

			'plugin-slug' => 'wordpress-importer',

			'importer-id' => 'wordpress',

		),

	);

}