<?php
/**
 * Manage Imports
 *
 * @author Maksym Tsypliakov <maksym.tsypliakov@gmail.com>
 */
class PMXI_Admin_Manage extends PMXI_Controller_Admin {

	public function init() {
		parent::init();

		if ('update' == PMXI_Plugin::getInstance()->getAdminCurrentScreen()->action) {
			$this->isInline = true;
		}
	}

	/**
	 * Previous Imports list
	 */
	public function index() {

		$get = $this->input->get(array(
			's' => '',
			'order_by' => 'registered_on',
			'order' => 'DESC',
			'pagenum' => 1,
			'perPage' => 25,
		));
		$get['pagenum'] = absint($get['pagenum']);
		extract($get);
		$this->data += $get;

		if ( ! in_array($order_by, array('registered_on', 'id', 'name'))){
			$order_by = 'registered_on';
		}

		if ( ! in_array($order, array('DESC', 'ASC'))){
			$order = 'DESC';
		}

		if ( in_array($order_by, array('name'))){
			$order_by = 'friendly_name ' . $order . ', name';
		}

		$list = new PMXI_Import_List();
		$by = array('parent_import_id' => 0);
		if ('' != $s) {
			$like = '%' . preg_replace('%\s+%', '%', preg_replace('/[%?]/', '\\\\$0', $s)) . '%';
			$by[] = array(array('name LIKE' => $like, 'type LIKE' => $like, 'path LIKE' => $like, 'friendly_name LIKE' => $like), 'OR');
		}

		$this->data['list'] = $list->setColumns(
				$list->getTable() . '.*'
			)
			->getBy($by, "$order_by $order", $pagenum, $perPage, $list->getTable() . '.id');

		$this->data['page_links'] = paginate_links(array(
			'base' => add_query_arg('pagenum', '%#%', $this->baseUrl),
			'add_args' => array('page' => 'pmxi-admin-manage'),
			'format' => '',
			'prev_text' => __('&laquo;', 'wp_all_import_plugin'),
			'next_text' => __('&raquo;', 'wp_all_import_plugin'),
			'total' => ceil($list->total() / $perPage),
			'current' => $pagenum,
		));

		PMXI_Plugin::$session->clean_session();

		$this->render();
	}

	/**
	* delete all posts, media, files, and whatever value was in the 'Unique ID' field
	*/
	public function delete_and_edit() {
		$get = $this->input->get(array(
			'id' => '',
		));
		if ( ! empty($get['id']) ) {
			$import = new PMXI_Import_Record();
			$import->getById($get['id']);
			if ( ! $import->isEmpty() ) {
				$import->deletePosts(false);
				$options = $import->options;
				if ( empty($import->options['custom_type']) || $import->options['custom_type'] != 'shop_order') {
					$options['unique_key'] = '';
				}
				$import->set(array(
					'options'  => $options,
					'imported' => 0,
					'created'  => 0,
					'updated'  => 0,
					'skipped'  => 0,
					'deleted'  => 0,
					'changed_missing'  => 0
				))->save();
			}
		}
		if ( ! empty($import->options['custom_type']) && $import->options['custom_type'] == 'shop_order') {
			wp_redirect(esc_url_raw(add_query_arg(array('id' => $import->id, 'action' => 'edit'), $this->baseUrl))); die();
		} else {
			wp_redirect(esc_url_raw(add_query_arg(array('id' => $import->id, 'action' => 'options'), $this->baseUrl))); die();
		}
	}

    /**
     * Disable `Skip posts if their data in your file has not changed` option.
     */
    public function disable_skip_posts() {
        $get = $this->input->get(array(
            'id' => '',
        ));
        if ( ! empty($get['id']) ) {
            $import = new PMXI_Import_Record();
            $import->getById($get['id']);
            if ( ! $import->isEmpty() ) {
                $options = $import->options;
                $options['is_selective_hashing'] = 0;
                $import->set(array(
                    'options'  => $options,
                    'imported' => 0,
                    'created'  => 0,
                    'updated'  => 0,
                    'skipped'  => 0,
                    'deleted'  => 0,
                    'changed_missing'  => 0
                ))->save();
            }
            wp_redirect(esc_url_raw(add_query_arg(array('id' => $import->id, 'action' => 'update'), $this->baseUrl))); die();
        }
    }

	/**
	 * Edit Template
	 */
	public function edit() {

		// deligate operation to other controller
		$controller = new PMXI_Admin_Import();
		$controller->set('isTemplateEdit', true);
		$controller->template();
	}

	/**
	 * Edit Options
	 */
	public function options() {

		// deligate operation to other controller
		$controller = new PMXI_Admin_Import();
		$controller->set('isTemplateEdit', true);
		$controller->options();
	}

	public function get_template(){
		$nonce = (!empty($_REQUEST['_wpnonce'])) ? wp_unslash($_REQUEST['_wpnonce']) : '';
		if ( ! wp_verify_nonce( $nonce, '_wpnonce-download_template' ) ) {
		    die( __('Security check', 'wp_all_import_plugin') );
		} else {

			$id = $this->input->get('id');

			$item = new PMXI_Import_Record();

			$filepath = '';

			$export_data = array();

			if ( ! $item->getById($id)->isEmpty()){
				$tpl_name = empty($item->friendly_name) ? $item->name : $item->friendly_name;
				$tpl_data = array(
					'name' => $tpl_name,
					'is_keep_linebreaks' => 0,
					'is_leave_html' => 0,
					'fix_characters' => 0,
					'options' => $item->options
				);

				$template_data[] = $tpl_data;
				$uploads   = wp_upload_dir();
				$targetDir = $uploads['basedir'] . DIRECTORY_SEPARATOR . PMXI_Plugin::TEMP_DIRECTORY;

				$export_file_name = "WP All Import Template - " . sanitize_file_name($tpl_name) . ".txt";

				file_put_contents($targetDir . DIRECTORY_SEPARATOR . $export_file_name, json_encode($template_data));

				PMXI_download::csv($targetDir . DIRECTORY_SEPARATOR . $export_file_name);

			}
		}
	}

	/*
	 * Download bundle for WP All Import
	 *
	 */
	public function bundle(){

		$nonce = (!empty($_REQUEST['_wpnonce'])) ? wp_unslash($_REQUEST['_wpnonce']) : '';
		if ( ! wp_verify_nonce( $nonce, '_wpnonce-download_bundle' ) ) {
		    die( __('Security check', 'wp_all_import_plugin') );
		} else {

			$uploads  = wp_upload_dir();

			$id = $this->input->get('id');

			$bundle_path = $this->create_bundle($id, $nonce);

			if (file_exists($bundle_path))
			{
				$bundle_url = $uploads['baseurl'] . str_replace($uploads['basedir'], '', $bundle_path);

				PMXI_download::zip($bundle_path);
			}

		}
	}

	protected function create_bundle($id, $nonce)
	{
		$uploads  = wp_upload_dir();

		//generate temporary folder
		$tmp_dir    = $uploads['basedir'] . DIRECTORY_SEPARATOR . PMXI_Plugin::TEMP_DIRECTORY . DIRECTORY_SEPARATOR . md5($nonce) . DIRECTORY_SEPARATOR;
		$bundle_dir = $tmp_dir . 'bundle' . DIRECTORY_SEPARATOR;

		// clear tmp dir
		wp_all_import_rmdir($tmp_dir);

		@mkdir($tmp_dir);

		$import = new PMXI_Import_Record();

		if ( ! $import->getById($id)->isEmpty())
		{

			$friendly_name = sanitize_file_name($import->friendly_name);

			@mkdir($bundle_dir);

			$tpl_name = empty($import->friendly_name) ? $import->name : $import->friendly_name;
			if (empty($tpl_name))
			{
				$tpl_name = 'Import_' . $import->id;
			}
			$tpl_data = array(
				'name' => $tpl_name,
                'bundle_xpath' => $import->xpath,
				'is_keep_linebreaks' => 0,
				'is_leave_html' => 0,
				'fix_characters' => 0,
				'options' => $import->options,
			);

			$template_data = array($tpl_data);
			$template      = "WP All Import Template - " . $tpl_name . ".txt";

			$filepath = '';
			if ( in_array($import->type, array('url')))
			{
				$template_data[0]['_import_type'] = 'url';
				$template_data[0]['_import_url']  = $import->path;
				// $history = new PMXI_File_List();
				// $history->setColumns('id', 'name', 'registered_on', 'path')->getBy(array('import_id' => $import->id), 'id DESC');
				// if ($history->count()){
				// 	foreach ($history as $file){
				// 		$filepath = wp_all_import_get_absolute_path($file['path']);
				// 		if (@file_exists($filepath)) break;
				// 	}
				// }
			}
			else
			{
				$filepath = wp_all_import_get_absolute_path($import->path);
			}

			file_put_contents($bundle_dir . $template, json_encode($template_data));

			$readme = __("The other two files in this zip are the export file containing all of your data and the import template for WP All Import. \n\nTo import this data, create a new import with WP All Import and upload this zip file.", "wp_all_export_plugin");

			file_put_contents($bundle_dir . 'readme.txt', $readme);

			@copy( $filepath, $bundle_dir . basename($filepath) );

			$bundle_path = $tmp_dir . $tpl_name . '.zip';

			PMXI_Zip::zipDir($bundle_dir, $bundle_path);

			return $bundle_path;

		}
	}

	/**
	 * Cron Scheduling
	 */
	public function scheduling() {
		$this->data['id'] = $id = $this->input->get('id');
		$this->data['cron_job_key'] = PMXI_Plugin::getInstance()->getOption('cron_job_key');
		$this->data['item'] = $item = new PMXI_Import_Record();
		if ( ! $id or $item->getById($id)->isEmpty()) {
			wp_redirect(esc_url_raw($this->baseUrl)); die();
		}

		$this->render();
	}

	/**
	 * Cancel import processing
	 */
	public function cancel(){

		$nonce = (!empty($_REQUEST['_wpnonce'])) ? wp_unslash($_REQUEST['_wpnonce']) : '';
		if ( ! wp_verify_nonce( $nonce, '_wpnonce-cancel_import' ) ) {
		    die( __('Security check', 'wp_all_import_plugin') );
		} else {

			$id = $this->input->get('id');

			PMXI_Plugin::$session->clean_session( $id );

			$item = new PMXI_Import_Record();
			if ( ! $id or $item->getById($id)->isEmpty()) {
				wp_redirect(esc_url_raw($this->baseUrl)); die();
			}
			$item->set(array(
				'triggered'   => 0,
				'processing'  => 0,
				'executing'   => 0,
				'canceled'    => 1,
				'canceled_on' => date('Y-m-d H:i:s')
			))->update();

			wp_redirect(esc_url_raw(add_query_arg('pmxi_nt', urlencode(__('Import canceled', 'wp_all_import_plugin')), $this->baseUrl))); die();
		}
	}

	/**
	 * Re-run import
	 */
	public function update() {

		$id = $this->input->get('id');

		PMXI_Plugin::$session->clean_session( $id );

		$action_type = false;

		$this->data['import'] = $item = new PMXI_Import_Record();
		if ( ! $id or $item->getById($id)->isEmpty()) {
			wp_redirect(esc_url_raw($this->baseUrl)); die();
		}

		$this->data['isWizard'] = false;

		$default = PMXI_Plugin::get_default_import_options();

		$DefaultOptions = $item->options + $default;
		foreach (PMXI_Admin_Addons::get_active_addons() as $class) {
			if (class_exists($class)) $DefaultOptions += call_user_func(array($class, "get_default_import_options"));
		}

		$this->data['post'] =& $DefaultOptions;

		$this->data['source'] = array(
			'path' => $item->path,
			'root_element' => $item->root_element
		);

		$this->data['xpath'] = $item->xpath;
		$this->data['count'] = $item->count;

		$history = new PMXI_File_List();
		$history->setColumns('id', 'name', 'registered_on', 'path')->getBy(array('import_id' => $item->id), 'id DESC');
		if ($history->count()){
			foreach ($history as $file){
				if (@file_exists(wp_all_import_get_absolute_path($file['path']))) {
					$this->data['locfilePath'] = wp_all_import_get_absolute_path($file['path']);
					break;
				}
			}
		}

		$chunks = 0;

		if ( ($this->input->post('is_confirmed') and check_admin_referer('confirm', '_wpnonce_confirm')) ) {

			$continue = $this->input->post('is_continue', 'no');

			// mark action type ad continue
			if ($continue == 'yes') $action_type = 'continue';

			$filePath = '';

			// upload new file in case when import is not continue
			if ( empty(PMXI_Plugin::$session->chunk_number) ) {

				if ( in_array($item->type, array('upload'))){ // retrieve already uploaded file

					$uploader = new PMXI_Upload(trim($item->path), $this->errors, rtrim(str_replace(basename($item->path), '', wp_all_import_get_absolute_path($item->path)), '/'));
					$upload_result = $uploader->upload();
					if ($upload_result instanceof WP_Error)
						$this->errors = $upload_result;
					else
						$filePath  = $upload_result['filePath'];
				}

				if (empty($item->options['encoding'])){
					$currentOptions = $item->options;
					$currentOptions['encoding'] = 'UTF-8';
					$item->set(array(
						'options' => $currentOptions
					))->update();
				}

				@set_time_limit(0);

				$local_paths = ( ! empty($local_paths) ) ? $local_paths : array($filePath);

				// wp_all_import_get_reader_engine( $local_paths, array('root_element' => $item->root_element), $item->id );

				foreach ($local_paths as $key => $path) {

					if (!empty($action_type) and $action_type == 'continue'){
						$chunks = $item->count;
					}
					else{

						$file = new PMXI_Chunk($path, array('element' => $item->root_element, 'encoding' => $item->options['encoding']));

					    while ($xml = $file->read()) {

					    	if ( ! empty($xml) )
					      	{
					      		//PMXI_Import_Record::preprocessXml($xml);
					      		$xml = "<?xml version=\"1.0\" encoding=\"". $item->options['encoding'] ."\"?>" . "\n" . $xml;

						      	$dom = new DOMDocument('1.0', ( ! empty($item->options['encoding']) ) ? $item->options['encoding'] : 'UTF-8');
								$old = libxml_use_internal_errors(true);
								$dom->loadXML($xml); // FIX: libxml xpath doesn't handle default namespace properly, so remove it upon XML load
								libxml_use_internal_errors($old);
								$xpath = new DOMXPath($dom);
								if (($elements = @$xpath->query($item->xpath)) and !empty($elements) and !empty($elements->length)){
                                    $chunks += $elements->length;
                                }

								unset($dom, $xpath, $elements);
						    }
						}
						unset($file);
					}

					!$key and $filePath = $path;
				}

				if (empty($chunks)) {
					if ($item->options['is_delete_missing']) {
						$chunks = 1;
					} else {
						$item->set(array(
							'registered_on' => date('Y-m-d H:i:s')
						))->update();
						$this->errors->add('root-element-validation', __('No matching elements found for Root element and XPath expression specified', 'wp_all_import_plugin'));
					}
				}
			}

			if ( $chunks ) { // xml is valid
				if ( ! PMXI_Plugin::is_ajax() and empty(PMXI_Plugin::$session->chunk_number)) {
					// compose data to look like result of wizard steps
					$sesson_data = array(
						'filePath' => $filePath,
						'source' => array(
							'name' => $item->name,
							'type' => $item->type,
							'path' => wp_all_import_get_relative_path($item->path),
							'root_element' => $item->root_element,
						),
						'feed_type' => $item->feed_type,
						'update_previous' => $item->id,
						'parent_import_id' => $item->parent_import_id,
						'xpath' => $item->xpath,
						'options' => $item->options,
						'encoding' => (!empty($item->options['encoding'])) ? $item->options['encoding'] : 'UTF-8',
						'is_csv' => (!empty($item->options['delimiter'])) ? $item->options['delimiter'] : PMXI_Plugin::$is_csv,
						'csv_path' => PMXI_Plugin::$csv_path,
						'chunk_number' => 1,
						'log' => '',
						'warnings' => 0,
						'errors' => 0,
						'start_time' => 0,
						'pointer' => 1,
						'count' => (isset($chunks)) ? $chunks : 0,
						'local_paths' => (!empty($local_paths)) ? $local_paths : array(), // ftp import local copies of remote files
						'action' => (!empty($action_type) and $action_type == 'continue') ? 'continue' : 'update',
						'nonce' => wp_create_nonce( 'import' ),
						'deligate' => false
					);
					foreach ($sesson_data as $key => $value) {
						PMXI_Plugin::$session->set($key, $value);
					}
					PMXI_Plugin::$session->save_data();
				}
				$item->set(array('canceled' => 0, 'failed' => 0))->update();
				// deligate operation to other controller
				$controller = new PMXI_Admin_Import();
				$controller->data['update_previous'] = $item;
				$controller->process();
				return;
			}
		}
		$this->render('admin/import/confirm');
	}

	/*
	 * Download import file
	 *
	 */
	public function feed(){

		$nonce = (!empty($_REQUEST['_wpnonce'])) ? wp_unslash($_REQUEST['_wpnonce']) : '';
		if ( ! wp_verify_nonce( $nonce, '_wpnonce-download_feed' ) ) {
		    die( __('Security check', 'wp_all_import_plugin') );
		} else {

			$import_id = $this->input->get('id');

			$path = '';

			$import = new PMXI_Import_Record();
			$import->getbyId($import_id);
			if ( ! $import->isEmpty()){
				$path = wp_all_import_get_absolute_path($import->path);

			}

			if (file_exists($path))
			{
				if (preg_match('%\W(zip)$%i', trim(basename($path)))){
					PMXI_download::zip($path);
				}
				elseif(preg_match('%\W(xml)$%i', trim(basename($path)))){
					PMXI_download::xml($path);
				}
				else{
					PMXI_download::csv($path);
				}
			}
			else
			{
				wp_redirect(esc_url_raw(add_query_arg(array('pmxi_nt' => urlencode(__('File does not exist.', 'wp_all_import_plugin'))), $this->baseUrl))); die();
			}
		}
	}

	/**
	 * Delete an import
	 */
	public function delete() {
		$id = $this->input->get('id');
		$this->data['item'] = $item = new PMXI_Import_Record();
		if ( ! $id or $item->getById($id)->isEmpty()) {
			wp_redirect(esc_url_raw($this->baseUrl)); die();
		}

		if ($this->input->post('is_confirmed')) {
			check_admin_referer('delete-import', '_wpnonce_delete-import');

			$is_deleted_images = $this->input->post('is_delete_images');
			$is_delete_attachments = $this->input->post('is_delete_attachments');
			$is_delete_import = $this->input->post('is_delete_import', false);
			$is_delete_posts = $this->input->post('is_delete_posts', false);

			if ( ! $is_delete_import and ! $is_delete_posts ){
				wp_redirect(esc_url_raw(add_query_arg('pmxi_nt', urlencode(__('Nothing to delete.', 'wp_all_import_plugin')), $this->baseUrl))); die();
			}

			do_action('pmxi_before_import_delete', $item, $is_delete_posts);

			$item->delete( ! $is_delete_posts, $is_deleted_images, $is_delete_attachments, $is_delete_import );

			$redirect_msg = '';

			if ( $is_delete_import and ! $is_delete_posts )
			{
				$redirect_msg = __('Import deleted', 'wp_all_import_plugin');
			}
			elseif( ! $is_delete_import and $is_delete_posts)
			{
				$redirect_msg = __('All associated posts deleted.', 'wp_all_import_plugin');
			}
			elseif( $is_delete_import and $is_delete_posts)
			{
				$redirect_msg = __('Import and all associated posts deleted.', 'wp_all_import_plugin');
			}

			wp_redirect(esc_url_raw(add_query_arg('pmxi_nt', urlencode($redirect_msg), $this->baseUrl))); die();
		}

		$postList = new PMXI_Post_List();
		$this->data['associated_posts'] = count($postList->getBy(array('import_id' => $item->id)));

		$this->render();
	}

	/**
	 * Bulk actions
	 */
	public function bulk() {
		check_admin_referer('bulk-imports', '_wpnonce_bulk-imports');
		if ($this->input->post('doaction2')) {
			$this->data['action'] = $action = $this->input->post('bulk-action2');
		} else {
			$this->data['action'] = $action = $this->input->post('bulk-action');
		}
		$this->data['ids'] = $ids = $this->input->post('items');
		$this->data['items'] = $items = new PMXI_Import_List();
		if (empty($action) or ! in_array($action, array('delete')) or empty($ids) or $items->getBy('id', $ids)->isEmpty()) {
			wp_redirect(esc_url_raw($this->baseUrl)); die();
		}

		if ($this->input->post('is_confirmed')) {
			$is_delete_posts = $this->input->post('is_delete_posts', false);
			$is_deleted_images = $this->input->post('is_delete_images');
			$is_delete_attachments = $this->input->post('is_delete_attachments');
			foreach($items->convertRecords() as $item) {
				$item->delete( ! $is_delete_posts, $is_deleted_images, $is_delete_attachments );
			}

			wp_redirect(esc_url_raw(add_query_arg('pmxi_nt', urlencode(sprintf(__('%d %s deleted', 'wp_all_import_plugin'), $items->count(), _n('import', 'imports', $items->count(), 'wp_all_import_plugin'))), $this->baseUrl))); die();
		}

		$this->render();
	}

}
