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<?php
/**
* Handles reports CSV export.
*/
namespace Automattic\Kkart\Admin;
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
use \Automattic\Kkart\Admin\Schedulers\SchedulerTraits;
/**
* ReportExporter Class.
*/
class ReportExporter {
/**
* Slug to identify the scheduler.
*
* @var string
*/
public static $name = 'report_exporter';
/**
* Scheduler traits.
*/
use SchedulerTraits {
init as scheduler_init;
}
/**
* Export status option name.
*/
const EXPORT_STATUS_OPTION = 'kkart_admin_report_export_status';
/**
* Export file download action.
*/
const DOWNLOAD_EXPORT_ACTION = 'kkart_admin_download_report_csv';
/**
* Get all available scheduling actions.
* Used to determine action hook names and clear events.
*
* @return array
*/
public static function get_scheduler_actions() {
return array(
'export_report' => 'kkart_admin_report_export',
'email_report_download_link' => 'kkart_admin_email_report_download_link',
);
}
/**
* Add action dependencies.
*
* @return array
*/
public static function get_dependencies() {
return array(
'email_report_download_link' => self::get_action( 'export_report' ),
);
}
/**
* Hook in action methods.
*/
public static function init() {
// Initialize scheduled action handlers.
self::scheduler_init();
// Report download handler.
add_action( 'admin_init', array( __CLASS__, 'download_export_file' ) );
}
/**
* Queue up actions for a full report export.
*
* @param string $export_id Unique ID for report (timestamp expected).
* @param string $report_type Report type. E.g. 'customers'.
* @param array $report_args Report parameters, passed to data query.
* @param bool $send_email Optional. Send an email when the export is complete.
* @return int Number of items to export.
*/
public static function queue_report_export( $export_id, $report_type, $report_args = array(), $send_email = false ) {
$exporter = new ReportCSVExporter( $report_type, $report_args );
$exporter->prepare_data_to_export();
$total_rows = $exporter->get_total_rows();
$batch_size = $exporter->get_limit();
$num_batches = (int) ceil( $total_rows / $batch_size );
// Create batches, like initial import.
$report_batch_args = array( $export_id, $report_type, $report_args );
if ( 0 < $num_batches ) {
self::queue_batches( 1, $num_batches, 'export_report', $report_batch_args );
if ( $send_email ) {
$email_action_args = array( get_current_user_id(), $export_id, $report_type );
self::schedule_action( 'email_report_download_link', $email_action_args );
}
}
return $total_rows;
}
/**
* Process a report export action.
*
* @param int $page_number Page number for this action.
* @param string $export_id Unique ID for report (timestamp expected).
* @param string $report_type Report type. E.g. 'customers'.
* @param array $report_args Report parameters, passed to data query.
* @return void
*/
public static function export_report( $page_number, $export_id, $report_type, $report_args ) {
$report_args['page'] = $page_number;
$exporter = new ReportCSVExporter( $report_type, $report_args );
$exporter->set_filename( "kkart-{$report_type}-report-export-{$export_id}" );
$exporter->generate_file();
self::update_export_percentage_complete( $report_type, $export_id, $exporter->get_percent_complete() );
}
/**
* Generate a key to reference an export status.
*
* @param string $report_type Report type. E.g. 'customers'.
* @param string $export_id Unique ID for report (timestamp expected).
* @return string Status key.
*/
protected static function get_status_key( $report_type, $export_id ) {
return $report_type . ':' . $export_id;
}
/**
* Update the completion percentage of a report export.
*
* @param string $report_type Report type. E.g. 'customers'.
* @param string $export_id Unique ID for report (timestamp expected).
* @param int $percentage Completion percentage.
* @return void
*/
public static function update_export_percentage_complete( $report_type, $export_id, $percentage ) {
$exports_status = get_option( self::EXPORT_STATUS_OPTION, array() );
$status_key = self::get_status_key( $report_type, $export_id );
$exports_status[ $status_key ] = $percentage;
update_option( self::EXPORT_STATUS_OPTION, $exports_status );
}
/**
* Get the completion percentage of a report export.
*
* @param string $report_type Report type. E.g. 'customers'.
* @param string $export_id Unique ID for report (timestamp expected).
* @return bool|int Completion percentage, or false if export not found.
*/
public static function get_export_percentage_complete( $report_type, $export_id ) {
$exports_status = get_option( self::EXPORT_STATUS_OPTION, array() );
$status_key = self::get_status_key( $report_type, $export_id );
if ( isset( $exports_status[ $status_key ] ) ) {
return $exports_status[ $status_key ];
}
return false;
}
/**
* Serve the export file.
*/
public static function download_export_file() {
// @todo - add nonce? (nonces are good for 24 hours)
if (
isset( $_GET['action'] ) &&
! empty( $_GET['filename'] ) &&
self::DOWNLOAD_EXPORT_ACTION === wp_unslash( $_GET['action'] ) && // WPCS: input var ok, sanitization ok.
current_user_can( 'view_kkart_reports' )
) {
$exporter = new ReportCSVExporter();
$exporter->set_filename( wp_unslash( $_GET['filename'] ) ); // WPCS: input var ok, sanitization ok.
$exporter->export();
}
}
/**
* Process a report export email action.
*
* @param int $user_id User ID that requested the email.
* @param string $export_id Unique ID for report (timestamp expected).
* @param string $report_type Report type. E.g. 'customers'.
* @return void
*/
public static function email_report_download_link( $user_id, $export_id, $report_type ) {
$percent_complete = self::get_export_percentage_complete( $report_type, $export_id );
if ( 100 === $percent_complete ) {
$query_args = array(
'action' => self::DOWNLOAD_EXPORT_ACTION,
'filename' => "kkart-{$report_type}-report-export-{$export_id}",
);
$download_url = add_query_arg( $query_args, admin_url() );
\KKART_Emails::instance();
$email = new ReportCSVEmail();
$email->trigger( $user_id, $report_type, $download_url );
}
}
}
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