<?php

namespace SilverStripe\Security;

use SilverStripe\Dev\CsvBulkLoader;
use SilverStripe\ORM\DataObject;

/**
 * @todo Migrate Permission->Arg and Permission->Type values
 */
class GroupCsvBulkLoader extends CsvBulkLoader
{

    public $duplicateChecks = [
        'Code' => 'Code',
    ];

    public function __construct($objectClass = Group::class)
    {
        parent::__construct($objectClass);
    }

    public function processRecord($record, $columnMap, &$results, $preview = false)
    {
        // We match by 'Code', the ID property is confusing the importer
        if (isset($record['ID'])) {
            unset($record['ID']);
        }

        $objID = parent::processRecord($record, $columnMap, $results, $preview);

        /** @var Group $group */
        $group = DataObject::get_by_id($this->objectClass, $objID);
        // set group hierarchies - we need to do this after all records
        // are imported to avoid missing "early" references to parents
        // which are imported later on in the CSV file.
        if (isset($record['ParentCode']) && $record['ParentCode']) {
            $parentGroup = DataObject::get_one('SilverStripe\\Security\\Group', [
                '"Group"."Code"' => $record['ParentCode']
            ]);
            if ($parentGroup) {
                $group->ParentID = $parentGroup->ID;
                $group->write();
            }
        }

        // set permission codes - these are all additive, meaning
        // existing permissions arent cleared.
        if (isset($record['PermissionCodes']) && $record['PermissionCodes']) {
            foreach (explode(',', $record['PermissionCodes'] ?? '') as $code) {
                $p = DataObject::get_one('SilverStripe\\Security\\Permission', [
                    '"Permission"."Code"' => $code,
                    '"Permission"."GroupID"' => $group->ID
                ]);
                if (!$p) {
                    $p = new Permission(['Code' => $code]);
                    $p->write();
                }
                $group->Permissions()->add($p);
            }
        }

        return $objID;
    }
}