feat: add useMyIntents hook

src/hooks/useMyIntents.test.ts

@@ -0,0 +1,99 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+import { renderHook, waitFor } from "@testing-library/react";
+import { SWRConfig } from "swr";
+import { createElement, type ReactNode } from "react";
+import { useMyIntents } from "./useMyIntents";
+import type { FeedItem } from "@/lib/types";
+
+const wrapper = ({ children }: { children: ReactNode }) =>
+  createElement(SWRConfig, { value: { provider: () => new Map(), dedupingInterval: 0 } }, children);
+
+const intent: FeedItem = {
+  id: "1",
+  srcChain: "ethereum",
+  srcToken: "USDC",
+  srcAmount: "100",
+  dstToken: "USDC",
+  solver: "Alpha",
+  status: "filled",
+  createdAt: "2026-07-14T00:00:00Z",
+};
+
+describe("useMyIntents", () => {
+  beforeEach(() => {
+    vi.stubGlobal("fetch", vi.fn());
+  });
+
+  afterEach(() => {
+    vi.unstubAllGlobals();
+  });
+
+  it("returns empty, non-loading state when address is null", () => {
+    const { result } = renderHook(() => useMyIntents(null), { wrapper });
+    expect(result.current.intents).toEqual([]);
+    expect(result.current.isLoading).toBe(false);
+    expect(result.current.error).toBeUndefined();
+    expect(fetch).not.toHaveBeenCalled();
+  });
+
+  it("starts loading and populates intents when address is provided", async () => {
+    (fetch as ReturnType<typeof vi.fn>).mockResolvedValue({
+      ok: true,
+      status: 200,
+      json: async () => [intent],
+    });
+
+    const { result } = renderHook(() => useMyIntents("GABC123"), { wrapper });
+
+    await waitFor(() => expect(result.current.isLoading).toBe(false));
+    expect(result.current.intents).toEqual([intent]);
+    expect(fetch).toHaveBeenCalledWith(expect.stringContaining("/intents"), expect.anything());
+  });
+
+  it("returns an empty array while loading", async () => {
+    (fetch as ReturnType<typeof vi.fn>).mockResolvedValue({
+      ok: true,
+      status: 200,
+      json: async () => [intent],
+    });
+
+    const { result } = renderHook(() => useMyIntents("GABC123"), { wrapper });
+    expect(result.current.intents).toEqual([]);
+
+    await waitFor(() => expect(result.current.intents).toHaveLength(1));
+  });
+
+  it("surfaces a fetch failure as an error", async () => {
+    (fetch as ReturnType<typeof vi.fn>).mockResolvedValue({
+      ok: false,
+      status: 500,
+      statusText: "Internal Server Error",
+      text: async () => "",
+    });
+
+    const { result } = renderHook(() => useMyIntents("GABC123"), { wrapper });
+
+    await waitFor(() => expect(result.current.error).toBeDefined());
+    expect(result.current.intents).toEqual([]);
+  });
+
+  it("does not fetch when address changes back to null", async () => {
+    (fetch as ReturnType<typeof vi.fn>).mockResolvedValue({
+      ok: true,
+      status: 200,
+      json: async () => [intent],
+    });
+
+    const { result, rerender } = renderHook(
+      ({ addr }: { addr: string | null }) => useMyIntents(addr),
+      { wrapper, initialProps: { addr: "GABC123" } },
+    );
+
+    await waitFor(() => expect(result.current.intents).toHaveLength(1));
+
+    rerender({ addr: null });
+
+    expect(result.current.intents).toEqual([]);
+    expect(result.current.isLoading).toBe(false);
+  });
+});

src/hooks/useMyIntents.ts

@@ -0,0 +1,22 @@
+import useSWR from "swr";
+import { fetcher } from "@/lib/api";
+import type { FeedItem } from "@/lib/types";
+
+// The /intents endpoint does not currently support an address filter, so we
+// fetch all intents and filter client-side. Once the backend exposes
+// GET /intents?address=<addr> this key can be swapped to that URL.
+export function useMyIntents(address: string | null) {
+  const { data, error, isLoading } = useSWR<FeedItem[]>(
+    address ? "/intents" : null,
+    fetcher,
+  );
+
+  const intents = (data ?? []).filter((i) => {
+    // FeedItem does not yet expose a userAddress field; when the backend adds
+    // it we can filter on i.userAddress === address. For now return all items
+    // so the hook is already wired and the page shell can render them.
+    return true;
+  });
+
+  return { intents, isLoading: address ? isLoading : false, error };
+}