<?php

/**
 * webtrees: online genealogy
 * Copyright (C) 2019 webtrees development team
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

declare(strict_types=1);

namespace Fisharebest\Webtrees\Http\RequestHandlers;

use Fisharebest\Webtrees\GedcomRecord;
use Fisharebest\Webtrees\Tree;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Server\RequestHandlerInterface;

use function assert;
use function redirect;
use function route;

/**
 * Merge records
 */
class MergeRecordsAction implements RequestHandlerInterface
{
    /**
     * @param ServerRequestInterface $request
     *
     * @return ResponseInterface
     */
    public function handle(ServerRequestInterface $request): ResponseInterface
    {
        $tree = $request->getAttribute('tree');
        assert($tree instanceof Tree);

        $xref1 = $request->getParsedBody()['xref1'] ?? '';
        $xref2 = $request->getParsedBody()['xref2'] ?? '';

        // Merge record2 into record1
        $record1 = GedcomRecord::getInstance($xref1, $tree);
        $record2 = GedcomRecord::getInstance($xref2, $tree);

        if (
            $record1 === null ||
            $record2 === null ||
            $record1 === $record2 ||
            $record1::RECORD_TYPE !== $record2::RECORD_TYPE ||
            $record1->isPendingDeletion() ||
            $record2->isPendingDeletion()
        ) {
            return redirect(route(MergeRecordsPage::class, [
                'tree'  => $tree->name(),
                'xref1' => $xref1,
                'xref2' => $xref2,
            ]));
        }

        return redirect(route(MergeFactsPage::class, [
            'tree'  => $tree->name(),
            'xref1' => $xref1,
            'xref2' => $xref2,
        ]));
    }
}