<?php
declare(strict_types=1);

require_once dirname(dirname(__DIR__)) . '/bootstrap.php';

if (!TaskCertRequest::isPost()) {
    TaskCertResponse::json(['success' => false, 'error' => 'Methode nicht erlaubt'], 405);
}

$auth = TaskCertAuthContext::fromGlobals();
if (!$auth->hasPermission('r-task-cert-admin')) {
    TaskCertResponse::json(['success' => false, 'error' => 'Keine Berechtigung'], 403);
}

$contentType = trim((string) ($_SERVER['CONTENT_TYPE'] ?? ''));
$isJson = strpos($contentType, 'application/json') !== false;

if ($isJson) {
    $rawBody = file_get_contents('php://input');
    $body = json_decode($rawBody ?: '{}', true);
    if (!is_array($body)) {
        $body = [];
    }

    $csrfToken = trim((string) ($body['csrf_token'] ?? ''));
    if ($csrfToken !== '') {
        $_POST['csrf_token'] = $csrfToken;
    }
    TaskCertCsrf::assertValidFromRequest(true);

    $taskId = (int) ($body['task_id'] ?? 0);
    $assignmentId = (int) ($body['assignment_id'] ?? 0);
    $adminNote = trim((string) ($body['admin_note'] ?? ''));
    $methodPayloads = [];
    $rawMethods = $body['method'] ?? [];
    if (is_array($rawMethods)) {
        foreach ($rawMethods as $methodId => $fields) {
            $methodId = (int) $methodId;
            if ($methodId <= 0 || !is_array($fields)) {
                continue;
            }
            $methodPayloads[$methodId] = $fields;
        }
    }
} else {
    TaskCertCsrf::assertValidFromRequest(true);

    $taskId = TaskCertRequest::postInt('task_id', 0);
    $assignmentId = TaskCertRequest::postInt('assignment_id', 0);
    $adminNote = TaskCertRequest::postString('admin_note', '');
    $methodPayloads = [];
    $rawMethods = $_POST['method'] ?? [];
    if (is_array($rawMethods)) {
        foreach ($rawMethods as $methodId => $fields) {
            $methodId = (int) $methodId;
            if ($methodId <= 0 || !is_array($fields)) {
                continue;
            }
            $methodPayloads[$methodId] = $fields;
        }
    }
}

if ($taskId <= 0) {
    TaskCertResponse::json(['success' => false, 'error' => 'Ungültige task_id'], 400);
}

if ($assignmentId <= 0) {
    TaskCertResponse::json(['success' => false, 'error' => 'Ungültige assignment_id'], 400);
}

try {
    $services = task_cert_services();
    $taskService = $services['taskDefinitionService'] ?? null;
    if (!$taskService instanceof TaskDefinitionService) {
        throw new RuntimeException('TaskDefinitionService konnte nicht geladen werden.');
    }

    $stats = $taskService->adminMarkCompleted(
        $taskId,
        $assignmentId,
        $auth->contactId(),
        $methodPayloads,
        $adminNote
    );

    TaskCertResponse::json([
        'success' => true,
        'task_id' => $taskId,
        'assignment_id' => $assignmentId,
        'stats' => $stats,
    ]);
} catch (Throwable $throwable) {
    TaskCertResponse::json([
        'success' => false,
        'error' => $throwable->getMessage(),
    ], 400);
}