/**
 * Dedicated UI contract tests for v0.60j — restartInvestigation caller behaviour.
 *
 * Deterministic via static file-level vi.mock — no localStorage, no provider imports,
 * no vi.resetModules, no module-cache manipulation, no timing sleeps.
 */

import { describe, expect, it, beforeEach, vi } from "vitest";
import React from "react";
import { render, screen, fireEvent, waitFor, within } from "@testing-library/react";
import "@testing-library/jest-dom";

// ---------------------------------------------------------------------------
// Mock next/navigation — static file-level mock
// ---------------------------------------------------------------------------

let pushRef = { push: () => {} };

vi.mock("next/navigation", () => ({
  useRouter: () => pushRef,
}));

// ---------------------------------------------------------------------------
// Mock investigation-storage — application-facing contract only
// No localStorage. No provider imports.
// NOTE: All exports must be present because ScenarioForm imports multiple.
// ---------------------------------------------------------------------------

let mockList = [];
let mockRestartTarget = null;
let mockLoadResult = null;
let mockClearTarget = null;
let mockLastSavedSnapshot = null;

vi.mock("@/lib/storage/investigation-storage", () => ({
  listInvestigations: () => [...mockList],
  restartInvestigation: (id) => {
    mockRestartTarget = id;
  },
  clearInvestigation: (id) => {
    mockClearTarget = id;
  },
  loadInvestigation: (id) => mockLoadResult,
  saveInvestigation: (snapshot) => {
    mockLastSavedSnapshot = snapshot;
  },
}));

function setMockSummaries(snapshots) {
  mockList = snapshots ?? [];
}

function setMockLoadResult(snap) {
  mockLoadResult = snap;
}

// ---------------------------------------------------------------------------
// Test fixture data — plain InvestigationSummary arrays
// ---------------------------------------------------------------------------

function summaryA() {
  return {
    id: "inv-a",
    scenario: "Scenario A",
    updatedAt: "2026-09-03T10:00:00.000Z",
    investigationRevision: 2,
    reportExists: true,
    reportGeneratedFromRevision: 2,
  };
}

function summaryB() {
  return {
    id: "inv-b",
    scenario: "Scenario B",
    updatedAt: "2026-09-02T10:00:00.000Z",
    investigationRevision: 3,
    reportExists: true,
    reportGeneratedFromRevision: 2,
  };
}

// ---------------------------------------------------------------------------
// A — Portfolio restart uses restartInvestigation (not clearInvestigation)
// ---------------------------------------------------------------------------

describe("v0.60j — Portfolio Restart calls restartInvestigation", () => {
  let Portfolio;

  beforeEach(async () => {
    pushRef.push = vi.fn();
    mockRestartTarget = null;
    mockClearTarget = null;
    setMockSummaries([summaryA(), summaryB()]);
    const mod = await import("@/app/page.jsx");
    Portfolio = mod.default;
  });

  it("restart confirmation calls restartInvestigation with the correct id (inv-a)", async () => {
    render(React.createElement(Portfolio));

    // Scope to the first card's Restart button (scenario A)
    const cards = document.querySelectorAll('[class*="border-teal-300"]');
    expect(cards).toHaveLength(2);
    const firstCardRestartBtn = within(cards[0]).getByRole("button", { name: /Restart investigation/i });
    fireEvent.click(firstCardRestartBtn);

    // Confirmation dialog appears — scoped to the aria-labelledby title for inv-a
    expect(await screen.findByRole("heading", { name: /Restart this investigation\?/i })).toBeInTheDocument();

    // Click the confirm button INSIDE the dialog (scoped), not the card's restart buttons
    const dialog = document.querySelector('[role="dialog"]');
    const confirmBtn = within(dialog).getByRole("button", { name: "Restart investigation" });
    fireEvent.click(confirmBtn);

    await waitFor(() => expect(mockRestartTarget).toBe("inv-a"));
  });

  it("restart does NOT call clearInvestigation", async () => {
    render(React.createElement(Portfolio));

    const cards = document.querySelectorAll('[class*="border-teal-300"]');
    const firstCardRestartBtn = within(cards[0]).getByRole("button", { name: /Restart investigation/i });
    fireEvent.click(firstCardRestartBtn);

    await screen.findByRole("heading", { name: /Restart this investigation\?/i });
    const dialog = document.querySelector('[role="dialog"]');
    const confirmBtn = within(dialog).getByRole("button", { name: "Restart investigation" });
    fireEvent.click(confirmBtn);

    await waitFor(() => expect(mockClearTarget).toBeNull());
  });

  it("restart of inv-b passes inv-b as id", async () => {
    render(React.createElement(Portfolio));

    const cards = document.querySelectorAll('[class*="border-teal-300"]');
    // Second card (scenario B) — index 1
    const secondCardRestartBtn = within(cards[1]).getByRole("button", { name: /Restart investigation/i });
    fireEvent.click(secondCardRestartBtn);

    await screen.findByRole("heading", { name: /Restart this investigation\?/i });

    const dialog = document.querySelector('[role="dialog"]');
    const confirmBtn = within(dialog).getByRole("button", { name: "Restart investigation" });
    fireEvent.click(confirmBtn);

    await waitFor(() => expect(mockRestartTarget).toBe("inv-b"));
  });
});

// ---------------------------------------------------------------------------
// B — ScenarioForm restart path calls restartInvestigation with id
// ---------------------------------------------------------------------------

describe("v0.60j — ScenarioForm restart calls restartInvestigation(investigationId)", () => {
  let ScenarioForm;

  beforeEach(async () => {
    pushRef.push = vi.fn();
    mockRestartTarget = null;
    setMockLoadResult(null); // No persisted session on mount
    const mod = await import("@/components/scenario-form.jsx");
    ScenarioForm = mod.default;
  });

  it("ScenarioForm mounts without error under mocked storage", async () => {
    const testId = "inv-scenarioform-mock-test";
    expect(() => {
      render(React.createElement(ScenarioForm, { investigationId: testId }));
    }).not.toThrow();
  });

  it("restartInvestigation is importable from storage layer", async () => {
    const m = await import("@/lib/storage/investigation-storage.js");
    expect(typeof m.restartInvestigation).toBe("function");
  });

  // ── Directly observable: ContinueLaterBanner restart ──────────────────────

  it("ContinueLaterBanner Restart calls restartInvestigation(\"inv-restart-a\")", async () => {
    mockRestartTarget = null;
    setMockLoadResult({
      id: "inv-restart-a",
      scenario: "Test ContinueLaterBanner restart scenario",
      situationGraph: { nodes: [], edges: [] }, // hasGraph → status promoted to "success"
      updatedAt: "2026-09-03T10:00:00.000Z",
    });

    const mod = await import("@/components/scenario-form.jsx");
    ScenarioForm = mod.default;

    render(React.createElement(ScenarioForm, { investigationId: "inv-restart-a" }));

    // ContinueLaterBanner renders when status === "success" && result?.updatedAt exists
    expect(await screen.findByText("Restart investigation")).toBeInTheDocument();
    fireEvent.click(screen.getByText("Restart investigation"));

    await waitFor(() => expect(mockRestartTarget).toBe("inv-restart-a"));
  });

  // ── Directly observable: "Start new investigation" reset control ───────────

  it("'Start new investigation' button calls restartInvestigation(\"inv-restart-a\")", async () => {
    mockRestartTarget = null;
    setMockLoadResult({
      id: "inv-restart-a",
      scenario: "Test StartNew reset scenario",
      situationGraph: { nodes: [], edges: [] }, // hasGraph → status promoted to "success"
      updatedAt: "2026-09-03T10:00:00.000Z",
    });

    const mod = await import("@/components/scenario-form.jsx");
    ScenarioForm = mod.default;

    render(React.createElement(ScenarioForm, { investigationId: "inv-restart-a" }));

    expect(await screen.findByText("Start new investigation")).toBeInTheDocument();
    fireEvent.click(screen.getByText("Start new investigation"));

    await waitFor(() => expect(mockRestartTarget).toBe("inv-restart-a"));
  });

  // ── Source-inspected-only: ReasoningWorkspace onRestart path ──────────────
  // PATH 1 NOT DIRECTLY OBSERVABLE IN BOUNDED APPARATUS
  // ProviderUnavailable / MalformedResponse / UnexpectedState cards require
  // error-state reasoning data — not fabricatable in this bounded apparatus.
  //
  // Source confirmation (components/scenario-form.jsx line ~949):
  //   onRestart={() => { restartInvestigation(investigationId); ... }}
  // This passes investigationId as the first argument to restartInvestigation.
});