Initial commit: Kalendartool (Next.js, Prisma, Docker)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

app/api/calendars/[id]/route.ts

@@ -0,0 +1,79 @@
+/**
+ * GET    /api/calendars/[id] - Kalenderdetails (Owner oder Member).
+ * PATCH  /api/calendars/[id] - bearbeiten (nur besitzender Admin).
+ */
+import { NextRequest, NextResponse } from 'next/server';
+import { prisma } from '@/lib/db/client';
+import { requireCalendarContext } from '@/lib/api/context';
+import { updateCalendarSchema } from '@/lib/validation';
+import { canManageCalendar } from '@/lib/permissions/permissions';
+import { errorResponse, forbiddenResponse } from '@/lib/api/responses';
+
+interface RouteParams {
+  params: Promise<{ id: string }>;
+}
+
+export async function GET(
+  _request: NextRequest,
+  { params }: RouteParams,
+): Promise<NextResponse> {
+  try {
+    const { id } = await params;
+    const context = await requireCalendarContext(id);
+
+    return NextResponse.json({ calendar: context.calendar });
+  } catch (error) {
+    return errorResponse(error);
+  }
+}
+
+export async function PATCH(
+  request: NextRequest,
+  { params }: RouteParams,
+): Promise<NextResponse> {
+  try {
+    const { id } = await params;
+    const context = await requireCalendarContext(id);
+
+    if (!canManageCalendar(context.user, context.calendar)) {
+      return forbiddenResponse();
+    }
+
+    const body = updateCalendarSchema.parse(await request.json());
+
+    const calendar = await prisma.calendar.update({
+      where: { id },
+      data: {
+        ...(body.title !== undefined ? { title: body.title } : {}),
+        ...(body.description !== undefined
+          ? { description: body.description }
+          : {}),
+        ...(body.timezone !== undefined ? { timezone: body.timezone } : {}),
+        ...(body.isActive !== undefined ? { isActive: body.isActive } : {}),
+        ...(body.maxReservationMinutes !== undefined
+          ? { maxReservationMinutes: body.maxReservationMinutes }
+          : {}),
+        ...(body.showTitleToMembers !== undefined
+          ? { showTitleToMembers: body.showTitleToMembers }
+          : {}),
+        ...(body.showNotesToMembers !== undefined
+          ? { showNotesToMembers: body.showNotesToMembers }
+          : {}),
+      },
+      select: {
+        id: true,
+        title: true,
+        description: true,
+        timezone: true,
+        isActive: true,
+        maxReservationMinutes: true,
+        showTitleToMembers: true,
+        showNotesToMembers: true,
+      },
+    });
+
+    return NextResponse.json({ calendar });
+  } catch (error) {
+    return errorResponse(error);
+  }
+}