feat: complete notdienst planning, quick wins and notifications

src/app/dashboard/families/actions.ts

@@ -11,6 +11,8 @@ import { requireRole } from "@/lib/auth-utils";
 import { getAppEmailConfigError, sendAppEmail } from "@/lib/mail";
 import { rateLimit } from "@/lib/rate-limit";
 import { prisma } from "@/lib/prisma";
+import { assertChildrenRemovable } from "@/lib/notdienst-planning";
+import { UserFacingError, publicActionError } from "@/lib/action-error";
 
 const INVITE_TOKEN_TTL_DAYS = 7;
 const BASE_URL =
@@ -387,6 +389,9 @@ export async function updateFamilyAction(rawPayload: unknown) {
     }
 
     await prisma.$transaction(async (tx) => {
+      await assertChildrenRemovable(tx, kitaId, familyId, removedChildIds);
+      const removed = await tx.child.count({ where: { kitaId, familyId, id: { in: removedChildIds } } });
+      if (removed !== removedChildIds.length) throw new UserFacingError("Mindestens ein Kind gehört nicht zu dieser Familie.");
       await tx.family.update({
         where: { id: familyId },
         data: { name: familyName },
@@ -460,7 +465,7 @@ export async function updateFamilyAction(rawPayload: unknown) {
           },
         });
       }
-    });
+    }, { isolationLevel: Prisma.TransactionIsolationLevel.Serializable });
   } catch (error) {
     if (
       error instanceof Prisma.PrismaClientKnownRequestError &&
@@ -469,8 +474,8 @@ export async function updateFamilyAction(rawPayload: unknown) {
       return { error: "Mindestens eine E-Mail-Adresse existiert bereits." };
     }
 
-    console.error("Fehler beim Aktualisieren der Familie:", error);
-    return { error: "Familie konnte nicht aktualisiert werden." };
+    if (!(error instanceof UserFacingError)) console.error("Fehler beim Aktualisieren der Familie:", error);
+    return { error: publicActionError(error, "Familie konnte nicht aktualisiert werden.") };
   }
 
   const emailError = await sendInviteJobs(kita.name, inviteJobs);