Phase 2: API client, typed hooks, live probe

- Add api:types script (openapi-typescript against live FastAPI) - Generate src/lib/api/types.ts (2972 lines, 55 paths, 16 schemas) - lib/api/client.ts: typed apiRequest + ApiError + makeQueryClient (staleTime 5s, no refetchOnWindowFocus to preserve editor state) - lib/providers.tsx: QueryClientProvider client component, useState singleton so App Router re-renders don't dump the cache - lib/api/cases.ts: Case type + casesKeys + useCases hook (pragmatic hand-typed Case pending backend response-model annotations) - layout.tsx: wrap children with <Providers> - Smoke test: CasesLiveProbe component on home page hitting live FastAPI via /api/cases rewrite proxy Phase 2 deliverable check: useCases() returns typed Case[] from the production FastAPI through the Next.js proxy. End-to-end wiring proven. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-11 15:49:24 +00:00
parent 64724656af
commit 0ee8e723bd
9 changed files with 3260 additions and 80 deletions
--- a/web-ui/src/app/layout.tsx
+++ b/web-ui/src/app/layout.tsx
@@ -1,5 +1,6 @@
 import type { Metadata } from "next";
 import { Heebo } from "next/font/google";
+import { Providers } from "@/lib/providers";
 import "./globals.css";

 const heebo = Heebo({
@@ -21,7 +22,9 @@ export default function RootLayout({
 }>) {
  return (
    <html lang="he" dir="rtl" className={`${heebo.variable} h-full antialiased`}>
-      <body className="min-h-full flex flex-col">{children}</body>
+      <body className="min-h-full flex flex-col">
+        <Providers>{children}</Providers>
+      </body>
    </html>
  );
 }
--- a/web-ui/src/app/page.tsx
+++ b/web-ui/src/app/page.tsx
@@ -1,4 +1,5 @@
 import { AppShell } from "@/components/app-shell";
+import { CasesLiveProbe } from "@/components/cases/cases-live-probe";

 export default function HomePage() {
  return (
@@ -15,11 +16,8 @@ export default function HomePage() {
        <hr className="border-0 h-[2px] bg-gradient-to-l from-transparent via-gold to-transparent" />

        <div className="rounded-lg bg-surface shadow-sm p-6 border border-rule">
-          <p className="text-ink">
-            שלב 1 של תוכנית השדרוג הושלם: scaffold של Next.js 16, פורט של design
-            tokens ל-Tailwind v4, RTL עברית עם Heebo. הפאזות הבאות יביאו את 10
-            המסכים ל-parity עם ה-UI הקיים.
-          </p>
+          <h2 className="text-navy text-xl mb-3">פאזה 2 — חיבור חי ל-API</h2>
+          <CasesLiveProbe />
        </div>
      </section>
    </AppShell>
--- a/web-ui/src/components/cases/cases-live-probe.tsx
+++ b/web-ui/src/components/cases/cases-live-probe.tsx
@@ -0,0 +1,51 @@
+"use client";
+
+import { useCases } from "@/lib/api/cases";
+
+/**
+ * Phase 2 smoke-test component — proves that the typed API client, the
+ * TanStack Query provider, the Next.js rewrite proxy, and the FastAPI backend
+ * are all wired up correctly end-to-end. Temporary; replaced in Phase 3 by the
+ * real case list view.
+ */
+export function CasesLiveProbe() {
+  const { data, isLoading, isError, error } = useCases();
+
+  if (isLoading) {
+    return (
+      <p className="text-ink-muted">טוען תיקים מה-API…</p>
+    );
+  }
+
+  if (isError) {
+    return (
+      <div className="text-danger">
+        <p className="font-medium">שגיאה בטעינת תיקים</p>
+        <p className="text-sm text-ink-muted">
+          {error instanceof Error ? error.message : "שגיאה לא ידועה"}
+        </p>
+      </div>
+    );
+  }
+
+  const count = data?.length ?? 0;
+
+  return (
+    <div className="space-y-2">
+      <p className="text-ink">
+        <span className="font-semibold text-navy">{count}</span>{" "}
+        תיקים טעונים מה-API בהצלחה.
+      </p>
+      {data && data.length > 0 && (
+        <ul className="text-sm text-ink-muted space-y-1">
+          {data.slice(0, 3).map((c) => (
+            <li key={c.case_number}>
+              <span className="text-gold-deep">{c.case_number}</span> — {c.title}
+            </li>
+          ))}
+          {data.length > 3 && <li>ועוד {data.length - 3}…</li>}
+        </ul>
+      )}
+    </div>
+  );
+}
--- a/web-ui/src/lib/api/cases.ts
+++ b/web-ui/src/lib/api/cases.ts
@@ -0,0 +1,54 @@
+/**
+ * Cases domain hooks.
+ *
+ * Note on types: the FastAPI `/api/cases` endpoint doesn't declare a response
+ * model, so openapi-typescript emits `unknown` for its payload. Until the
+ * backend is annotated (see out-of-scope in the rewrite plan), we maintain a
+ * small local type that matches what the running API returns today. Any drift
+ * surfaces as a runtime TypeScript error the first time a property is touched.
+ */
+
+import { useQuery } from "@tanstack/react-query";
+import { apiRequest } from "./client";
+
+export type CaseStatus =
+  | "new"
+  | "uploading"
+  | "processing"
+  | "documents_ready"
+  | "outcome_set"
+  | "brainstorming"
+  | "direction_approved"
+  | "drafting"
+  | "qa_review"
+  | "drafted"
+  | "exported"
+  | "reviewed"
+  | "final";
+
+export type Case = {
+  case_number: string;
+  title: string;
+  status: CaseStatus;
+  subject?: string | null;
+  expected_outcome?: string | null;
+  created_at?: string;
+  updated_at?: string;
+};
+
+export const casesKeys = {
+  all: ["cases"] as const,
+  list: (detail: boolean) => [...casesKeys.all, "list", { detail }] as const,
+  detail: (caseNumber: string) =>
+    [...casesKeys.all, "detail", caseNumber] as const,
+};
+
+export function useCases(detail = false) {
+  return useQuery({
+    queryKey: casesKeys.list(detail),
+    queryFn: ({ signal }) =>
+      apiRequest<Case[]>(`/api/cases${detail ? "?detail=true" : ""}`, {
+        signal,
+      }),
+  });
+}
--- a/web-ui/src/lib/api/client.ts
+++ b/web-ui/src/lib/api/client.ts
@@ -0,0 +1,77 @@
+/**
+ * API client — typed fetch wrapper + TanStack Query setup.
+ *
+ * All requests hit relative URLs (e.g. `/api/cases`) which next.config.ts
+ * rewrites transparently proxy to legal-ai.nautilus.marcusgroup.org. No CORS
+ * gymnastics, no direct public-URL references in component code.
+ */
+
+import { QueryClient } from "@tanstack/react-query";
+
+export class ApiError extends Error {
+  constructor(
+    message: string,
+    public readonly status: number,
+    public readonly body: unknown,
+  ) {
+    super(message);
+    this.name = "ApiError";
+  }
+}
+
+type RequestOptions = {
+  method?: "GET" | "POST" | "PUT" | "PATCH" | "DELETE";
+  body?: unknown;
+  signal?: AbortSignal;
+};
+
+/**
+ * Typed JSON request. Throws ApiError on non-2xx responses with the parsed body.
+ * Always returns parsed JSON — callers pass the expected type parameter.
+ */
+export async function apiRequest<T>(
+  path: string,
+  { method = "GET", body, signal }: RequestOptions = {},
+): Promise<T> {
+  const res = await fetch(path, {
+    method,
+    headers: body ? { "Content-Type": "application/json" } : undefined,
+    body: body ? JSON.stringify(body) : undefined,
+    signal,
+  });
+
+  const contentType = res.headers.get("content-type") ?? "";
+  const parsed = contentType.includes("application/json")
+    ? await res.json().catch(() => null)
+    : await res.text().catch(() => null);
+
+  if (!res.ok) {
+    throw new ApiError(
+      `${method} ${path} failed with ${res.status}`,
+      res.status,
+      parsed,
+    );
+  }
+
+  return parsed as T;
+}
+
+/**
+ * Shared TanStack Query client. Defaults are tuned for a dashboard that polls
+ * for case progress — stale for 5 seconds, 1 automatic retry, no background
+ * refetch on window focus (preserves editor state during long sessions).
+ */
+export function makeQueryClient(): QueryClient {
+  return new QueryClient({
+    defaultOptions: {
+      queries: {
+        staleTime: 5_000,
+        retry: 1,
+        refetchOnWindowFocus: false,
+      },
+      mutations: {
+        retry: 0,
+      },
+    },
+  });
+}
--- a/web-ui/src/lib/api/types.ts
+++ b/web-ui/src/lib/api/types.ts
--- a/web-ui/src/lib/providers.tsx
+++ b/web-ui/src/lib/providers.tsx
@@ -0,0 +1,17 @@
+"use client";
+
+import { useState, type ReactNode } from "react";
+import { QueryClientProvider } from "@tanstack/react-query";
+import { makeQueryClient } from "@/lib/api/client";
+
+/**
+ * Client-side providers. Creates ONE QueryClient instance per browser session
+ * via useState — Next.js App Router recreates the function on every render,
+ * so a naive `const client = makeQueryClient()` would dump the cache each time.
+ */
+export function Providers({ children }: { children: ReactNode }) {
+  const [queryClient] = useState(() => makeQueryClient());
+  return (
+    <QueryClientProvider client={queryClient}>{children}</QueryClientProvider>
+  );
+}