<?php
declare(strict_types=1);

class ApprovalService
{
    private TaskSubmissionRepository $submissionRepo;
    private TaskAssignmentRepository $assignmentRepo;
    private CompletionService $completionService;

    public function __construct(
        TaskSubmissionRepository $submissionRepo,
        TaskAssignmentRepository $assignmentRepo,
        CompletionService $completionService
    ) {
        $this->submissionRepo = $submissionRepo;
        $this->assignmentRepo = $assignmentRepo;
        $this->completionService = $completionService;
    }

    public function approveSubmission(int $submissionId, int $adminContactId, string $note): void
    {
        $submission = $this->submissionRepo->findById($submissionId);
        if ($submission === null) {
            throw new RuntimeException('Submission nicht gefunden');
        }

        if ((string) $submission['status'] !== 'awaiting_approval') {
            throw new RuntimeException('Submission ist nicht im Status awaiting_approval');
        }

        TaskCertDb::beginTransaction();
        try {
            $this->submissionRepo->review($submissionId, 'approved', $adminContactId, $note);
            TaskCertDb::commit();
        } catch (Throwable $throwable) {
            TaskCertDb::rollback();
            throw $throwable;
        }

        $this->completionService->refreshAssignmentAfterReview((int) $submission['assignment_id'], $submissionId);
    }

    public function rejectSubmission(int $submissionId, int $adminContactId, string $note): void
    {
        $submission = $this->submissionRepo->findById($submissionId);
        if ($submission === null) {
            throw new RuntimeException('Submission nicht gefunden');
        }

        if ((string) $submission['status'] !== 'awaiting_approval') {
            throw new RuntimeException('Submission ist nicht im Status awaiting_approval');
        }

        TaskCertDb::beginTransaction();
        try {
            $this->submissionRepo->review($submissionId, 'rejected', $adminContactId, $note);
            $this->assignmentRepo->updateStatus((int) $submission['assignment_id'], 'rejected', null);
            TaskCertDb::commit();
        } catch (Throwable $throwable) {
            TaskCertDb::rollback();
            throw $throwable;
        }
    }
}