import { render, screen, within } from "@testing-library/react";
import { http, HttpResponse } from "msw";
import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
import { server } from "../test/msw";
import { SessionDocumentsPanel } from "./SessionDocumentsPanel";
import type { SessionSummary } from "../api/types";

function makeClient() {
  return new QueryClient({ defaultOptions: { queries: { retry: false } } });
}

function wrap(ui: React.ReactElement, client = makeClient()) {
  const Wrapper = ({ children }: { children: React.ReactNode }) => (
    <QueryClientProvider client={client}>{children}</QueryClientProvider>
  );
  return render(ui, { wrapper: Wrapper });
}

const base: SessionSummary = {
  id: "s1", status: "open", question: "How many ablations?", summary: null,
  created_at: "2026-01-01T00:00:00Z", updated_at: null, author: null,
  name: null, group: null, archived: false,
};

beforeEach(() => {
  server.use(http.get("http://localhost:8787/sessions/s1/documents", () =>
    HttpResponse.json([
      { phase: "—", key: "question", title: "Original question", format: "text", content: "How many ablations?" },
      { phase: "F7", key: "sql", title: "Final SQL", format: "sql", content: "SELECT 1" },
    ]),
  ));
});

test("renders the document titles from the API", async () => {
  wrap(<SessionDocumentsPanel session={base} onClose={vi.fn()} onResume={vi.fn()} />);
  expect(await screen.findByRole("heading", { name: "Original question" })).toBeInTheDocument();
  // "Final SQL" is both the section heading and the SqlViewer block label — target the heading.
  expect(screen.getByRole("heading", { name: "Final SQL" })).toBeInTheDocument();
});

test("lets the Final SQL document use the full resized panel width", async () => {
  wrap(<SessionDocumentsPanel session={base} onClose={vi.fn()} onResume={vi.fn()} desktopSplit />);

  const sqlSection = (await screen.findByRole("heading", { name: "Final SQL" })).closest("section");
  expect(sqlSection).toHaveClass("w-full");
  expect(sqlSection?.parentElement).toHaveClass("w-full");
  expect(sqlSection?.parentElement).not.toHaveClass("max-w-[76ch]");
});

test("lets text documents adapt to the full resized panel width", async () => {
  wrap(<SessionDocumentsPanel session={base} onClose={vi.fn()} onResume={vi.fn()} desktopSplit />);

  const questionSection = (
    await screen.findByRole("heading", { name: "Original question" })
  ).closest("section");
  expect(questionSection).toHaveClass("w-full");
  expect(questionSection).not.toHaveClass("max-w-[76ch]");
});

test("shows Resume for resumable, hides it for finalized", async () => {
  const { rerender } = wrap(<SessionDocumentsPanel session={base} onClose={vi.fn()} onResume={vi.fn()} />);
  expect(await screen.findByRole("button", { name: /resume/i })).toBeInTheDocument();
  rerender(<SessionDocumentsPanel session={{ ...base, status: "finalized" }} onClose={vi.fn()} onResume={vi.fn()} />);
  expect(screen.queryByRole("button", { name: /resume/i })).not.toBeInTheDocument();
});

test("hides Resume for an archived session", async () => {
  wrap(<SessionDocumentsPanel session={{ ...base, archived: true }} onClose={vi.fn()} onResume={vi.fn()} />);
  await screen.findByText("Original question");
  expect(screen.queryByRole("button", { name: /resume/i })).not.toBeInTheDocument();
});

test("a malformed document renders a fallback without taking down its siblings", async () => {
  const errorSpy = vi.spyOn(console, "error").mockImplementation(() => {});
  // Valid JSON but missing `candidates` — SchemaLinkingViewer crashes on this shape.
  // Without a per-document boundary this crash blanks the whole panel (React 18
  // unmounts the tree); the good sibling document must still render.
  // resetHandlers(...) replaces the beforeEach handler so this response is used.
  server.resetHandlers(
    http.get("http://localhost:8787/sessions/s1/documents", () =>
      HttpResponse.json([
        { phase: "F4", key: "schema", title: "Schema linking", format: "schema-linking", content: '{"joins":[]}' },
        { phase: "—", key: "question", title: "Original question", format: "text", content: "SIBLING-SURVIVES" },
      ]),
    ),
  );
  wrap(<SessionDocumentsPanel session={base} onClose={vi.fn()} onResume={vi.fn()} />);
  // The healthy sibling rendered — the panel did not white-screen.
  expect(await screen.findByText("SIBLING-SURVIVES")).toBeInTheDocument();
  // The broken document degraded to a fallback in place.
  expect(screen.getByRole("alert")).toBeInTheDocument();
  expect(screen.getByText(/couldn't be displayed/i)).toBeInTheDocument();
  errorSpy.mockRestore();
});

test("renders the canonical summary order and formats human text as Markdown", async () => {
  server.resetHandlers(
    http.get("http://localhost:8787/sessions/s1/documents", () =>
      HttpResponse.json([
        { phase: "—", key: "question", title: "Original question", format: "text", content: "Original **question**" },
        { phase: "F7", key: "sql", title: "Final SQL", format: "sql", content: "SELECT 1" },
        { phase: "finalize", key: "preview", title: "Data preview", format: "markdown", content: "| count |\n|---|\n| 42 |" },
        { phase: "F3", key: "revised_question", title: "Revised question", format: "markdown", content: "# Domanda\n\nConta i pazienti **attivi**." },
        { phase: "F3", key: "assumptions", title: "Assumptions", format: "markdown", content: "## Assunzioni\n\n- Solo adulti" },
        { phase: "F8", key: "memories", title: "Memories", format: "memories", content: "[]" },
        { phase: "F4", key: "schema_linking", title: "Schema linking", format: "schema-linking", content: '{"question":"q","candidates":[],"joins":[],"excluded":[],"open_questions":[]}' },
      ]),
    ),
  );

  wrap(<SessionDocumentsPanel session={base} onClose={vi.fn()} onResume={vi.fn()} />);

  const panel = await screen.findByRole("complementary", { name: /session summary/i });
  await within(panel).findByRole("heading", { name: "Original question", level: 3 });
  expect(within(panel).getAllByRole("heading", { level: 3 }).map((heading) => heading.textContent)).toEqual([
    "Original question",
    "Final SQL",
    "Data preview",
    "Revised question",
    "Assumptions",
    "Memories",
    "Schema linking",
  ]);
  expect(screen.getByText("question").tagName).toBe("STRONG");
  expect(screen.getByText("attivi").tagName).toBe("STRONG");
  expect(screen.getByRole("heading", { name: "Domanda", level: 1 })).toBeInTheDocument();
  expect(screen.getByText("Solo adulti").closest("li")).toBeInTheDocument();
});

test("renders one approved-then-declined memory list with Markdown details", async () => {
  server.resetHandlers(
    http.get("http://localhost:8787/sessions/s1/documents", () =>
      HttpResponse.json([
        {
          phase: "F8",
          key: "memories",
          title: "Memories",
          format: "memories",
          content: JSON.stringify([
            {
              status: "approved",
              subject: "ablazione **valida**",
              detail: "Stato `completed`.",
              rationale: "*Confermato* dal reviewer.",
            },
            {
              status: "declined",
              subject: "paziente attivo",
              detail: "Usa `flag_attivo`.",
              rationale: "",
            },
          ]),
        },
      ]),
    ),
  );

  wrap(<SessionDocumentsPanel session={base} onClose={vi.fn()} onResume={vi.fn()} />);

  const list = await screen.findByRole("list", { name: /memories/i });
  const items = within(list).getAllByRole("listitem");
  expect(items).toHaveLength(2);
  expect(items[0]).toHaveTextContent(/approved/i);
  expect(items[1]).toHaveTextContent(/declined/i);
  expect(within(items[0]).getByText("valida").tagName).toBe("STRONG");
  expect(within(items[0]).getByText("completed").tagName).toBe("CODE");
  expect(within(items[0]).getByText("Confermato").tagName).toBe("EM");
  expect(screen.queryByText(/memory promoted/i)).not.toBeInTheDocument();
});

test("never renders technical approval, promotion, or memory decisions", async () => {
  const lines = [
    { type: "phase_approved", subject: "phase:1" },
    { type: "table_approved", subject: "fact_a" },
    { type: "table_promoted", subject: "fact_a" },
    { type: "column_promoted", subject: "fact_a.id" },
    { type: "cte_approved", subject: "eventi_device" },
    { type: "sql_approved", subject: "phase:7" },
    { type: "datamart_requested", subject: "phase:8" },
    { type: "datamart_declined", subject: "phase:8" },
    { type: "memory_promoted", subject: "concetto" },
    { type: "column_excluded", subject: "fact_a.note", detail: "Non **pertinente**" },
  ].map((decision) => JSON.stringify(decision)).join("\n");
  server.resetHandlers(
    http.get("http://localhost:8787/sessions/s1/documents", () =>
      HttpResponse.json([
        { phase: "—", key: "decisions", title: "Decisions", format: "decisions", content: lines },
      ]),
    ),
  );

  wrap(<SessionDocumentsPanel session={base} onClose={vi.fn()} onResume={vi.fn()} />);

  expect(await screen.findByText("column excluded")).toBeInTheDocument();
  expect(screen.getByText("pertinente").tagName).toBe("STRONG");
  for (const hidden of [
    "phase approved",
    "table approved",
    "table promoted",
    "column promoted",
    "cte approved",
    "sql approved",
    "datamart requested",
    "datamart declined",
    "memory promoted",
  ]) {
    expect(screen.queryByText(hidden)).not.toBeInTheDocument();
  }
});