feat: Wabenhain Honig-Shop Anwendung

Vollstaendige Next.js/Prisma-E-Commerce-Anwendung fuer eine Imkerei:
Shop, Warenkorb, Stripe-Checkout, Kundenkonto mit 2FA, Admin-Bereich
(Produkte, Ernten, Chargen, Bestellungen, Gutscheine, admin-editierbare
Website-Inhalte), i18n (DE/EN), Rate-Limiting/CSP/Audit-Log-Haertung,
PostgreSQL- und MySQL-Unterstuetzung ueber austauschbare Prisma-
Treiber-Adapter, Unit-/Komponenten-/E2E-Tests.

src/app/admin/actions/shipping.ts

@@ -0,0 +1,86 @@
+"use server";
+
+import { redirect } from "next/navigation";
+import { revalidatePath } from "next/cache";
+import { prisma } from "@/lib/prisma";
+import { logAdminAction } from "@/lib/audit-log";
+import { shippingTierSchema } from "@/lib/validation";
+import { requireAdmin, fail, str } from "./_shared";
+
+function parseShippingTierForm(formData: FormData) {
+  const rawMax = str(formData, "maxQuantity");
+  return shippingTierSchema.safeParse({
+    minQuantity: str(formData, "minQuantity"),
+    maxQuantity: rawMax === "" ? undefined : rawMax,
+    priceCents: str(formData, "priceCents"),
+  });
+}
+
+export async function createShippingTierAction(formData: FormData): Promise<void> {
+  const admin = await requireAdmin();
+
+  const parsed = parseShippingTierForm(formData);
+  if (!parsed.success) {
+    fail("/admin/versand/neu", parsed.error.issues[0]?.message ?? "Ungültige Eingabe.");
+  }
+
+  const tier = await prisma.shippingTier.create({
+    data: {
+      minQuantity: parsed.data.minQuantity,
+      maxQuantity: parsed.data.maxQuantity ?? null,
+      priceCents: parsed.data.priceCents,
+    },
+  });
+
+  await logAdminAction(admin, {
+    action: "shipping_tier.create",
+    entityType: "ShippingTier",
+    entityId: tier.id,
+    detail: `ab ${tier.minQuantity} Stück: ${tier.priceCents} Cent`,
+  });
+
+  revalidatePath("/admin/versand");
+  revalidatePath("/warenkorb");
+  revalidatePath("/versand-zahlung");
+  redirect("/admin/versand");
+}
+
+export async function updateShippingTierAction(formData: FormData): Promise<void> {
+  const admin = await requireAdmin();
+  const id = str(formData, "id");
+
+  const parsed = parseShippingTierForm(formData);
+  if (!parsed.success) {
+    fail(`/admin/versand/${id}`, parsed.error.issues[0]?.message ?? "Ungültige Eingabe.");
+  }
+
+  await prisma.shippingTier.update({
+    where: { id },
+    data: {
+      minQuantity: parsed.data.minQuantity,
+      maxQuantity: parsed.data.maxQuantity ?? null,
+      priceCents: parsed.data.priceCents,
+    },
+  });
+
+  await logAdminAction(admin, { action: "shipping_tier.update", entityType: "ShippingTier", entityId: id });
+
+  revalidatePath("/admin/versand");
+  revalidatePath("/warenkorb");
+  revalidatePath("/versand-zahlung");
+  redirect("/admin/versand");
+}
+
+export async function deleteShippingTierAction(formData: FormData): Promise<void> {
+  const admin = await requireAdmin();
+  const id = str(formData, "id");
+
+  await prisma.shippingTier.delete({ where: { id } });
+
+  await logAdminAction(admin, { action: "shipping_tier.delete", entityType: "ShippingTier", entityId: id });
+
+  revalidatePath("/admin/versand");
+  revalidatePath("/warenkorb");
+  revalidatePath("/versand-zahlung");
+  redirect("/admin/versand");
+}