feat(offers): generate Angebot/Offer PDFs for draft orders

app/routes/api.orders.$orderId.invoice.tsx

@@ -15,15 +15,17 @@ import { sendInvoiceEmail } from "../services/invoice/email.server";
 export const loader = async ({ request, params }: LoaderFunctionArgs) => {
   const { session, cors } = await authenticate.admin(request);
   const orderId = requireOrderId(params);
+  const url = new URL(request.url);
+  const kind = (url.searchParams.get("kind") === "offer" ? "offer" : "invoice") as "invoice" | "offer";
   const orderGid = orderId.startsWith("gid://")
     ? orderId
-    : `gid://shopify/Order/${orderId}`;
+    : `gid://shopify/${kind === "offer" ? "DraftOrder" : "Order"}/${orderId}`;
 
   const invoices = await db.invoice.findMany({
     where: { shopDomain: session.shop, orderId: orderGid },
     orderBy: [{ issuedAt: "desc" }],
   });
-  const latest = invoices.find((i) => i.kind === "invoice" && !i.cancelledAt);
+  const latest = invoices.find((i) => i.kind === kind && !i.cancelledAt);
 
   return cors(
     Response.json({
@@ -41,15 +43,18 @@ export const action = async ({ request, params }: ActionFunctionArgs) => {
   const orderId = requireOrderId(params);
   const url = new URL(request.url);
   let op = url.searchParams.get("action");
-  if (!op) {
-    // Also accept the action from the form body (used by the in-app fetcher).
+  let kindParam = url.searchParams.get("kind");
+  if (!op || !kindParam) {
+    // Also accept the action / kind from the form body (used by the in-app fetcher).
     const ct = request.headers.get("content-type") || "";
     if (ct.includes("application/x-www-form-urlencoded") || ct.includes("multipart/form-data")) {
       const form = await request.formData();
-      op = (form.get("action") as string | null) ?? null;
+      op = op ?? ((form.get("action") as string | null) ?? null);
+      kindParam = kindParam ?? ((form.get("kind") as string | null) ?? null);
     }
   }
   op = op ?? "generate";
+  const kind: "invoice" | "offer" = kindParam === "offer" ? "offer" : "invoice";
 
   try {
     if (op === "cancel_reissue") {
@@ -109,8 +114,9 @@ export const action = async ({ request, params }: ActionFunctionArgs) => {
       shopDomain: session.shop,
       admin,
       orderId,
+      kind,
     });
-    return cors(Response.json({ ok: true, op: "generate", ...result }));
+    return cors(Response.json({ ok: true, op: kind === "offer" ? "generate_offer" : "generate", ...result }));
   } catch (err) {
     const message = err instanceof Error ? err.message : String(err);
     console.error("invoice action failed:", err);