<?php

declare(strict_types=1);

namespace App\State;

use ApiPlatform\Metadata\Operation;
use ApiPlatform\State\ProviderInterface;
use App\Repository\AuditLogRepository;
use DateTimeImmutable;
use DateTimeZone;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\HttpFoundation\RequestStack;

class AuditLogProvider implements ProviderInterface
{
    private const PER_PAGE = 50;

    public function __construct(
        private readonly RequestStack $requestStack,
        private readonly AuditLogRepository $auditLogRepository,
    ) {}

    public function provide(Operation $operation, array $uriVariables = [], array $context = []): JsonResponse
    {
        $request = $this->requestStack->getCurrentRequest();
        if (!$request) {
            return new JsonResponse(['items' => [], 'total' => 0]);
        }

        $employeeId = $request->query->get('employeeId');
        $from       = $request->query->get('from');
        $to         = $request->query->get('to');
        $entityType = $request->query->get('entityType');
        $page       = max(1, (int) $request->query->get('page', '1'));

        $empId  = $employeeId ? (int) $employeeId : null;
        $fromDt = $from ? new DateTimeImmutable($from) : null;
        $toDt   = $to ? new DateTimeImmutable($to) : null;
        $type   = $entityType ?: null;
        $offset = ($page - 1) * self::PER_PAGE;

        $total = $this->auditLogRepository->countByFilters($empId, $fromDt, $toDt, $type);
        $logs  = $this->auditLogRepository->findByFilters($empId, $fromDt, $toDt, $type, self::PER_PAGE, $offset);

        $items = [];
        foreach ($logs as $log) {
            $employee     = $log->getEmployee();
            $employeeName = $employee
                ? trim(($employee->getLastName() ?? '').' '.($employee->getFirstName() ?? ''))
                : null;

            $items[] = [
                'id'           => $log->getId(),
                'employeeName' => $employeeName,
                'employeeId'   => $employee?->getId(),
                'username'     => $log->getUsername(),
                'action'       => $log->getAction(),
                'entityType'   => $log->getEntityType(),
                'description'  => $log->getDescription(),
                'changes'      => $log->getChanges(),
                'affectedDate' => $log->getAffectedDate()?->format('Y-m-d'),
                'createdAt'    => $log->getCreatedAt()->setTimezone(new DateTimeZone('Europe/Paris'))->format('Y-m-d H:i:s'),
            ];
        }

        return new JsonResponse([
            'items'   => $items,
            'total'   => $total,
            'page'    => $page,
            'perPage' => self::PER_PAGE,
        ]);
    }
}