Ajout des notification + page employé (#6)

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## Description de la PR

## Modification du .env

## Check list

- [ ] Pas de régression
- [ ] TU/TI/TF rédigée
- [ ] TU/TI/TF OK
- [ ] CHANGELOG modifié

Reviewed-on: #6
Co-authored-by: tristan <tristan@yuno.malio.fr>
Co-committed-by: tristan <tristan@yuno.malio.fr>

src/State/EmployeeFractionedDaysProcessor.php

@@ -0,0 +1,88 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\State;
+
+use ApiPlatform\Metadata\Operation;
+use ApiPlatform\State\ProcessorInterface;
+use App\ApiResource\EmployeeFractionedDaysInput;
+use App\Entity\Employee;
+use App\Entity\EmployeeLeaveBalance;
+use App\Enum\ContractType;
+use App\Enum\LeaveRuleCode;
+use App\Repository\EmployeeLeaveBalanceRepository;
+use App\Repository\EmployeeRepository;
+use DateTimeImmutable;
+use Doctrine\ORM\EntityManagerInterface;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
+use Symfony\Component\HttpKernel\Exception\UnprocessableEntityHttpException;
+
+final readonly class EmployeeFractionedDaysProcessor implements ProcessorInterface
+{
+    public function __construct(
+        private EmployeeRepository $employeeRepository,
+        private EmployeeLeaveBalanceRepository $leaveBalanceRepository,
+        private EntityManagerInterface $entityManager,
+    ) {}
+
+    public function process(mixed $data, Operation $operation, array $uriVariables = [], array $context = []): EmployeeFractionedDaysInput
+    {
+        if (!$data instanceof EmployeeFractionedDaysInput) {
+            throw new UnprocessableEntityHttpException('Invalid payload.');
+        }
+
+        $employeeId = (int) ($uriVariables['id'] ?? 0);
+        if ($employeeId <= 0) {
+            throw new UnprocessableEntityHttpException('id must be a positive integer.');
+        }
+
+        $employee = $this->employeeRepository->find($employeeId);
+        if (!$employee instanceof Employee) {
+            throw new NotFoundHttpException('Employee not found.');
+        }
+
+        $year     = $data->year ?? $this->resolveCurrentYear($employee);
+        $ruleCode = $this->resolveRuleCode($employee);
+
+        $balance = $this->leaveBalanceRepository->findOneByEmployeeRuleAndYear($employee, $ruleCode, $year);
+
+        if (null === $balance) {
+            $balance = new EmployeeLeaveBalance();
+            $balance->setEmployee($employee);
+            $balance->setRuleCode($ruleCode);
+            $balance->setYear($year);
+            $this->entityManager->persist($balance);
+        }
+
+        $balance->setFractionedDays($data->fractionedDays);
+        $balance->touch();
+        $this->entityManager->flush();
+
+        $data->year = $year;
+
+        return $data;
+    }
+
+    private function resolveRuleCode(Employee $employee): LeaveRuleCode
+    {
+        if (ContractType::FORFAIT === $employee->getContract()?->getType()) {
+            return LeaveRuleCode::FORFAIT_218;
+        }
+
+        return LeaveRuleCode::CDI_CDD_NON_FORFAIT;
+    }
+
+    private function resolveCurrentYear(Employee $employee): int
+    {
+        $today = new DateTimeImmutable('today');
+
+        if (ContractType::FORFAIT === $employee->getContract()?->getType()) {
+            return (int) $today->format('Y');
+        }
+
+        $month = (int) $today->format('n');
+
+        return $month >= 6 ? (int) $today->format('Y') + 1 : (int) $today->format('Y');
+    }
+}