import { render, screen, waitFor } from "@testing-library/react";
import userEvent from "@testing-library/user-event";
import { http, HttpResponse } from "msw";
import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
import { server } from "../test/msw";
import { FakeEventSource } from "../test/fakeEventSource";
import { useSessionStore } from "../store/sessionStore";
import { clearAuthState, setAuthState } from "../auth/authState";
import { AppShell } from "./AppShell";

function renderShell() {
  const client = new QueryClient({ defaultOptions: { queries: { retry: false } } });
  return render(
    <QueryClientProvider client={client}>
      <AppShell canLogout={false} />
    </QueryClientProvider>,
  );
}

beforeEach(() => {
  clearAuthState();
  setAuthState({
    issuer: "test",
    subject: "test",
    roles: ["admin"],
    permissions: ["session.use", "workspace.manage", "workspace.secrets.manage", "database.manage", "pi.manage"],
    isAdmin: true,
    csrfToken: null,
    session: null,
  });
  localStorage.clear();
  FakeEventSource.instances = [];
  (globalThis as any).EventSource = FakeEventSource;
  useSessionStore.getState().resetSession();
  server.use(
    http.get("/api/me", () => HttpResponse.json({
      issuer: "test",
      subject: "test",
      displayName: "Test",
      isAdmin: true,
    })),
    http.get("/api/sessions", () => HttpResponse.json([])),
    http.get("/api/settings", () => HttpResponse.json({
      workspace: "default",
      provider: "test",
      model: "test",
      thinking: "low",
    })),
    http.get("/api/workspaces", () => HttpResponse.json([])),
    http.get("/api/models", () => HttpResponse.json({ models: [] })),
    http.post("/api/runtime/prewarm", () => new HttpResponse(null, { status: 202 })),
  );
});

test("opens the database management surface and returns to the core", async () => {
  renderShell();

  const composer = screen.getByRole("textbox", { name: /new question/i });
  await userEvent.type(composer, "Unsent draft");

  const databaseManagement = screen.getByRole("button", { name: "Database management" });
  await userEvent.click(databaseManagement);

  expect(screen.getByRole("main", { name: "Database management" })).toBeVisible();
  expect(databaseManagement).toHaveAttribute("aria-current", "page");
  expect(databaseManagement).toHaveClass("w-full");
  expect(databaseManagement).not.toHaveClass("bg-sidebar-accent");
  expect(screen.queryByRole("textbox", { name: /new question/i })).not.toBeInTheDocument();

  await userEvent.click(screen.getByRole("button", { name: "New session" }));

  await waitFor(() => {
    expect(screen.queryByRole("main", { name: "Database management" })).not.toBeInTheDocument();
  });
  expect(screen.getByRole("textbox", { name: /new question/i })).toHaveValue("Unsent draft");
});

test("keeps a live core session connected and returns when that session is opened", async () => {
  server.use(
    http.get("/api/sessions", () => HttpResponse.json([{
      id: "s1",
      status: "open",
      question: "Active question",
      summary: null,
      created_at: "2026-01-02T00:00:00Z",
      updated_at: null,
      author: "test",
      name: null,
      group: null,
      archived: false,
      active: true,
    }])),
    http.post("/api/sessions/:id/resume", ({ params }) => HttpResponse.json({
      id: params.id,
      alreadyActive: true,
    })),
    http.get("/api/sessions/:id", ({ params }) => HttpResponse.json({
      id: params.id,
      status: "open",
      phase: 1,
    })),
  );
  renderShell();

  const session = await screen.findByTestId("session-item-s1");
  await userEvent.click(session);
  await waitFor(() => expect(FakeEventSource.instances).toHaveLength(1));
  const source = FakeEventSource.instances[0];

  await userEvent.click(screen.getByRole("button", { name: "Database management" }));

  expect(screen.getByRole("main", { name: "Database management" })).toBeVisible();
  expect(source.closed).toBe(false);
  expect(FakeEventSource.instances).toHaveLength(1);

  await userEvent.click(session);

  await waitFor(() => {
    expect(screen.queryByRole("main", { name: "Database management" })).not.toBeInTheDocument();
  });
  expect(source.closed).toBe(false);
  expect(FakeEventSource.instances).toHaveLength(1);
});

test("keeps read-safe workspace access but hides privileged management entries", () => {
  clearAuthState();
  setAuthState({
    issuer: "test",
    subject: "test",
    roles: ["user"],
    permissions: ["session.use"],
    isAdmin: false,
    csrfToken: null,
    session: null,
  });

  renderShell();

  expect(screen.getByRole("button", { name: "Workspace management" })).toBeInTheDocument();
  expect(screen.queryByRole("button", { name: "Database management" })).not.toBeInTheDocument();
  expect(screen.queryByRole("button", { name: "Pi management" })).not.toBeInTheDocument();
});

test("does not leave database management without confirming a dirty form", async () => {
  server.use(http.get("/api/catalog/databases", () => HttpResponse.json([{
    id: "11111111-1111-4111-8111-111111111111",
    workspaceId: "psd-clinical",
    workspaceName: "Policlinico San Donato",
    workspaceAvailable: true,
    configured: true,
    engine: "postgres",
    databaseName: "warehouse",
    schema: "datawarehouse",
    version: 3,
    createdAt: "2026-08-27T08:00:00Z",
    updatedAt: "2026-08-27T09:00:00Z",
    binding: { transport: "postgres_direct", host: "db.internal", port: 5432, username: "reader" },
    connectionStatus: "untested",
    secrets: {
      password: false,
      apiKey: false,
      sshPrivateKey: false,
      sshPrivateKeyPassphrase: false,
      sshKnownHosts: false,
      tlsCa: false,
    },
  }])));
  const confirm = vi.spyOn(window, "confirm").mockReturnValue(false);
  renderShell();

  await userEvent.click(screen.getByRole("button", { name: "Database management" }));
  await userEvent.click(await screen.findByRole("button", { name: "Edit Policlinico San Donato" }));
  const schema = screen.getByLabelText("Schema");
  await userEvent.clear(schema);
  await userEvent.type(schema, "reporting");

  await userEvent.click(screen.getByRole("button", { name: "New session" }));

  expect(confirm).toHaveBeenCalledWith("Discard unsaved database changes and leave database management?");
  expect(screen.getByRole("main", { name: "Database management" })).toBeVisible();
  expect(schema).toHaveValue("reporting");

  confirm.mockReturnValue(true);
  await userEvent.click(screen.getByRole("button", { name: "New session" }));
  await waitFor(() => expect(screen.queryByRole("main", { name: "Database management" })).not.toBeInTheDocument());
  confirm.mockRestore();
});