<?php

namespace Espo\Custom\Api\JunctionData;

use Espo\Core\Api\Action;
use Espo\Core\Api\Request;
use Espo\Core\Api\Response;
use Espo\Core\Api\ResponseComposer;
use Espo\Core\Exceptions\BadRequest;
use Espo\Core\Exceptions\NotFound;
use Espo\ORM\EntityManager;

/**
 * GET /api/v1/JunctionData/CAdvowareAkten/:akteId/dokumentes
 * 
 * Returns all documents linked to an Akte with junction table data
 */
class GetAktenDokumentes implements Action
{
    public function __construct(
        private EntityManager $entityManager
    ) {}
    
    public function process(Request $request): Response
    {
        $akteId = $request->getRouteParam('akteId');
        
        if (!$akteId) {
            throw new BadRequest('Akte ID is required');
        }
        
        // Verify akte exists
        $akte = $this->entityManager->getEntityById('CAdvowareAkten', $akteId);
        if (!$akte) {
            throw new NotFound('Akte not found');
        }
        
        $pdo = $this->entityManager->getPDO();
        
        // Direct SQL query with JOIN - much more efficient!
        $sql = "
            SELECT 
                j.id as junctionId,
                j.c_advoware_akten_id as cAdvowareAktenId,
                j.c_dokumente_id as cDokumenteId,
                j.hnr,
                j.syncstatus,
                j.last_sync as lastSync,
                d.id as documentId,
                d.name as documentName,
                d.blake3hash as blake3hash,
                d.created_at as documentCreatedAt,
                d.modified_at as documentModifiedAt
            FROM c_advoware_akten_dokumente j
            INNER JOIN c_dokumente d ON j.c_dokumente_id = d.id
            WHERE j.c_advoware_akten_id = :akteId
              AND j.deleted = 0
              AND d.deleted = 0
            ORDER BY j.hnr ASC, j.id DESC
        ";
        
        $sth = $pdo->prepare($sql);
        $sth->execute(['akteId' => $akteId]);
        
        $results = $sth->fetchAll(\PDO::FETCH_ASSOC);
        
        return ResponseComposer::json([
            'total' => count($results),
            'list' => $results
        ]);
    }
}