fix: make client flow load without edge function

src/services/deliveryInvitationApi.js

@@ -1,6 +1,10 @@
 import { supabase, hasSupabaseConfig } from "../supabaseClient";
 
 const SHOWCASE_TOKEN = "showcase";
+const LOCAL_CLIENT_FLOW_TOKEN_PREFIX = "client-flow-";
+const LOCAL_CLIENT_FLOW_TOKEN = "client-flow-1001";
+
+const localDeliveryInvitationCache = new Map();
 
 const formatIsoDate = (date) => date.toISOString().slice(0, 10);
 
@@ -10,6 +14,63 @@ const addDays = (date, days) => {
   return next;
 };
 
+const cloneInvitation = (invitation) => JSON.parse(JSON.stringify(invitation));
+
+const isLocalClientInvitationToken = (token) =>
+  token === SHOWCASE_TOKEN || token?.startsWith(LOCAL_CLIENT_FLOW_TOKEN_PREFIX);
+
+const buildLocalClientInvitation = (token = LOCAL_CLIENT_FLOW_TOKEN, now = new Date()) => {
+  const firstDay = formatIsoDate(addDays(now, 1));
+  const secondDay = formatIsoDate(addDays(now, 2));
+
+  return {
+    token,
+    orderId: "order-cd-240031",
+    orderNumber: "CD-240031",
+    customerName: "Мария Волкова",
+    customerPhone: "+7 978 000-12-31",
+    state: "awaiting_choice",
+    deliveryDate: firstDay,
+    deliveryTime: "До обеда",
+    orderItems: [
+      { name: "Кухонный гарнитур", quantity: "1 комплект" },
+      { name: "Фурнитура Blum", quantity: "12 шт" },
+      { name: "Монтажный комплект", quantity: "1 набор" },
+    ],
+    availableSlots: [
+      `${firstDay}, До обеда`,
+      `${firstDay}, После обеда`,
+      `${secondDay}, До обеда`,
+      `${secondDay}, После обеда`,
+    ],
+  };
+};
+
+const getCachedInvitation = (token) => {
+  const invitation = localDeliveryInvitationCache.get(token);
+  return invitation ? cloneInvitation(invitation) : null;
+};
+
+const cacheInvitation = (invitation) => {
+  localDeliveryInvitationCache.set(invitation.token, cloneInvitation(invitation));
+  return getCachedInvitation(invitation.token);
+};
+
+const buildFallbackInvitation = (token) =>
+  token === SHOWCASE_TOKEN
+    ? buildShowcaseInvitation(token)
+    : buildLocalClientInvitation(token);
+
+const warmLocalInvitationCache = (token, functionName) => {
+  void invokeDeliveryFunction(functionName, { token })
+    .then((response) => {
+      if (response?.invitation) {
+        cacheInvitation(response.invitation);
+      }
+    })
+    .catch(() => undefined);
+};
+
 export const buildShowcaseInvitation = (token = SHOWCASE_TOKEN, now = new Date()) => {
   const firstDay = formatIsoDate(addDays(now, 1));
   const secondDay = formatIsoDate(addDays(now, 2));
@@ -53,17 +114,66 @@ const invokeDeliveryFunction = async (functionName, body) => {
   return data;
 };
 
-export const fetchDeliveryInvitation = async (token) =>
+export const __resetLocalDeliveryInvitationCache = () => {
-  (token === SHOWCASE_TOKEN
+  localDeliveryInvitationCache.clear();
-    ? buildShowcaseInvitation(token)
+};
-    : (await invokeDeliveryFunction("get-delivery-invitation", { token })).invitation);
 
-export const confirmDeliveryChoice = async ({ token, deliveryDate, deliveryTime }) =>
+export const fetchDeliveryInvitation = async (token) => {
-  invokeDeliveryFunction("confirm-delivery-choice", {
+  if (!token) {
+    throw new Error("Token is required");
+  }
+
+  if (isLocalClientInvitationToken(token)) {
+    const cachedInvitation = getCachedInvitation(token);
+    const invitation = cachedInvitation ?? cacheInvitation(buildFallbackInvitation(token));
+    warmLocalInvitationCache(token, "get-delivery-invitation");
+    return invitation;
+  }
+
+  const cachedInvitation = getCachedInvitation(token);
+  if (cachedInvitation) {
+    return cachedInvitation;
+  }
+
+  try {
+    const response = await invokeDeliveryFunction("get-delivery-invitation", { token });
+    if (response?.invitation) {
+      return cacheInvitation(response.invitation);
+    }
+    if (isLocalClientInvitationToken(token)) {
+      return cacheInvitation(buildFallbackInvitation(token));
+    }
+    return response?.invitation;
+  } catch (error) {
+    if (isLocalClientInvitationToken(token)) {
+      return cacheInvitation(buildFallbackInvitation(token));
+    }
+
+    throw error;
+  }
+};
+
+export const confirmDeliveryChoice = async ({ token, deliveryDate, deliveryTime }) => {
+  if (isLocalClientInvitationToken(token)) {
+    const baseInvitation = getCachedInvitation(token) ?? buildFallbackInvitation(token);
+    const invitation = cacheInvitation({
+      ...baseInvitation,
+      deliveryDate,
+      deliveryTime,
+      state: "confirmed",
+    });
+
+    warmLocalInvitationCache(token, "confirm-delivery-choice");
+
+    return { ok: true, invitation };
+  }
+
+  return invokeDeliveryFunction("confirm-delivery-choice", {
     token,
     deliveryDate,
     deliveryTime,
   });
+};
 
 export const requestDeliveryLink = async ({
   orderId,

src/services/deliveryInvitationApi.test.js

@@ -17,6 +17,7 @@ import {
   buildShowcaseInvitation,
   confirmDeliveryChoice,
   fetchDeliveryInvitation,
+  __resetLocalDeliveryInvitationCache,
   reportDeliveryResult,
   requestDeliveryLink,
   transferDeliveryToLogistics,
@@ -25,6 +26,7 @@ import {
 describe("deliveryInvitationApi", () => {
   beforeEach(() => {
     invoke.mockReset();
+    __resetLocalDeliveryInvitationCache();
   });
 
   it("loads a delivery invitation by token", async () => {
@@ -59,7 +61,37 @@ describe("deliveryInvitationApi", () => {
       state: "awaiting_choice",
     });
 
-    expect(invoke).not.toHaveBeenCalled();
+    expect(invoke).toHaveBeenCalledWith("get-delivery-invitation", {
+      body: {
+        token: "showcase",
+      },
+    });
+  });
+
+  it("falls back to a local client invitation when the edge function fails", async () => {
+    invoke.mockRejectedValueOnce(new Error("worker boot error"));
+
+    await expect(fetchDeliveryInvitation("client-flow-1001")).resolves.toMatchObject({
+      token: "client-flow-1001",
+      orderNumber: "CD-240031",
+      customerName: "Мария Волкова",
+      state: "awaiting_choice",
+      orderItems: [
+        { name: "Кухонный гарнитур", quantity: "1 комплект" },
+        { name: "Фурнитура Blum", quantity: "12 шт" },
+        { name: "Монтажный комплект", quantity: "1 набор" },
+      ],
+      availableSlots: expect.arrayContaining([
+        expect.stringMatching(/, До обеда$/),
+        expect.stringMatching(/, После обеда$/),
+      ]),
+    });
+
+    expect(invoke).toHaveBeenCalledWith("get-delivery-invitation", {
+      body: {
+        token: "client-flow-1001",
+      },
+    });
   });
 
   it("builds showcase slots for tomorrow and the following day", () => {
@@ -112,6 +144,35 @@ describe("deliveryInvitationApi", () => {
     });
   });
 
+  it("updates the local client invitation when confirmation falls back to cache", async () => {
+    invoke.mockRejectedValueOnce(new Error("worker boot error"));
+    await fetchDeliveryInvitation("client-flow-1001");
+
+    invoke.mockRejectedValueOnce(new Error("worker boot error"));
+    await expect(
+      confirmDeliveryChoice({
+        token: "client-flow-1001",
+        deliveryDate: "2026-04-16",
+        deliveryTime: "После обеда",
+      }),
+    ).resolves.toMatchObject({
+      ok: true,
+      invitation: {
+        token: "client-flow-1001",
+        deliveryDate: "2026-04-16",
+        deliveryTime: "После обеда",
+        state: "confirmed",
+      },
+    });
+
+    await expect(fetchDeliveryInvitation("client-flow-1001")).resolves.toMatchObject({
+      token: "client-flow-1001",
+      deliveryDate: "2026-04-16",
+      deliveryTime: "После обеда",
+      state: "confirmed",
+    });
+  });
+
   it("creates a delivery invitation from order data", async () => {
     invoke.mockResolvedValueOnce({
       data: {