import { describe, expect, it } from "vitest";

// ── Simulated Run A initial reflection surface focused content lifecycle ──
// Validates that clicking an Open Question in post-Analyse → visible formulation
// → deconstruction → result follows the exact same state machine as OpenQuestionsPanel.

// ── State helpers that mirror ReasoningWorkspace logic ───────────

function simulateInitialFocus(props) {
  const { focusedInvestigations = {}, focusedPresentationItemId, postAnalyseStatus } = props;
  const focusedObj = focusedPresentationItemId ? (focusedInvestigations[focusedPresentationItemId] ?? null) : null;
  return {
    surfaceVisible: postAnalyseStatus === "success",
    focusedItem: focusedPresentationItemId ?? null,
    focusedObj,
    hasContent: Boolean(
      focusedObj?.question?.trim() ||
      focusedObj?.status === "formulating" ||
      props.processingStep === "active" ||
      focusedObj?.error
    ),
  };
}

function simulateFormulationSuccess(focusedInvestigations, nodeId, questionText) {
  return {
    ...focusedInvestigations,
    [nodeId]: {
      status: "formulated",
      question: questionText,
      answer: null,
      result: null,
      error: null,
    },
  };
}

function simulateAnswerSubmission(focusedInvestigations, nodeId, answerText) {
  const existing = focusedInvestigations[nodeId];
  if (!existing) return focusedInvestigations;
  return {
    ...focusedInvestigations,
    [nodeId]: { ...existing, answer: answerText },
  };
}

function simulateDeconstructionSuccess(focusedInvestigations, nodeId, resultData) {
  const existing = focusedInvestigations[nodeId];
  if (!existing) return focusedInvestigations;
  return {
    ...focusedInvestigations,
    [nodeId]: {
      ...existing,
      status: "formulated",
      result: resultData,
      error: null,
    },
  };
}

// ── Tests ─────────────────────────────────────────────────────

describe("Run A focused content — formulation visible in initial reflection surface", () => {
  it("collapsed question card shows UNCLEAR label before click", () => {
    const state = simulateInitialFocus({
      focusedInvestigations: {},
      focusedPresentationItemId: null,
      postAnalyseStatus: "success",
    });
    expect(state.surfaceVisible).toBe(true);
    expect(state.focusedItem).toBeNull();
    expect(state.hasContent).toBe(false);
  });

  it("formulation loading state — UNCLEAR hidden, focused card visible", () => {
    const withFormulating = { q1: { status: "formulating", question: "", answer: null, result: null, error: null } };
    const stateWithLoading = simulateInitialFocus({
      focusedInvestigations: withFormulating,
      focusedPresentationItemId: "q1",
      postAnalyseStatus: "success",
      processingStep: "idle",
    });

    expect(stateWithLoading.focusedItem).toBe("q1");
    expect(stateWithLoading.hasContent).toBe(true);
  });

  it("formulated question — exact question text visible via focused object", () => {
    const inv = simulateFormulationSuccess({}, "q1", "What would clarify this?");
    const state = simulateInitialFocus({
      focusedInvestigations: inv,
      focusedPresentationItemId: "q1",
      postAnalyseStatus: "success",
    });

    expect(state.focusedItem).toBe("q1");
    expect(state.hasContent).toBe(true);
    expect(state.focusedObj.question).toBe("What would clarify this?");
  });

  it("Your response textarea visible when status is formulated and no processing active", () => {
    const inv = simulateFormulationSuccess({}, "q1", "What would clarify this?");
    const state = simulateInitialFocus({
      focusedInvestigations: inv,
      focusedPresentationItemId: "q1",
      postAnalyseStatus: "success",
      processingStep: "idle",
    });

    expect(state.focusedObj.status).toBe("formulated");
    expect(state.hasContent).toBe(true);
  });

  it("deconstruction loading — processing text visible in same card", () => {
    const inv = simulateAnswerSubmission(
      simulateFormulationSuccess({}, "q1", "What would clarify this?"),
      "q1",
      "I believe the key factor is X"
    );

    const state = simulateInitialFocus({
      focusedInvestigations: inv,
      focusedPresentationItemId: "q1",
      postAnalyseStatus: "success",
      processingStep: "active",
    });

    expect(state.focusedItem).toBe("q1");
    expect(state.hasContent).toBe(true);
  });

  it("completed result — What this tells us, Still unclear, Questions this raises visible", () => {
    const inv = simulateDeconstructionSuccess(
      simulateAnswerSubmission(
        simulateFormulationSuccess({}, "q1", "What would clarify this?"),
        "q1",
        "I believe the key factor is X"
      ),
      "q1",
      {
        observations: ["Factor A is confirmed"],
        uncertainties: ["Timing unknown"],
        assumptions: [],
        relationships: [],
        possibleFollowUpQuestions: ["How does timing affect cost?"],
      }
    );

    const state = simulateInitialFocus({
      focusedInvestigations: inv,
      focusedPresentationItemId: "q1",
      postAnalyseStatus: "success",
      processingStep: "idle",
    });

    expect(state.focusedItem).toBe("q1");
    expect(state.hasContent).toBe(true);
    expect(state.focusedObj.result.observations).toEqual(["Factor A is confirmed"]);
    expect(state.focusedObj.result.uncertainties).toEqual(["Timing unknown"]);
    expect(state.focusedObj.result.possibleFollowUpQuestions).toContain("How does timing affect cost?");
  });

  it("reopen same completed question — previous result visible again after Back", () => {
    // Step 1: complete investigation
    const inv = simulateDeconstructionSuccess(
      simulateAnswerSubmission(
        simulateFormulationSuccess({}, "nbfaikr", "What would clarify distinction between blockers and assumptions?"),
        "nbfaikr",
        "It is a capability issue"
      ),
      "nbfaikr",
      {
        observations: ["Structural blocker confirmed"],
        uncertainties: [],
        assumptions: [],
        relationships: [],
        possibleFollowUpQuestions: [],
      }
    );

    // Step 2: user clicks "Back to open questions" — cleared focused but kept inv data
    const postBack = simulateInitialFocus({
      focusedInvestigations: inv,
      focusedPresentationItemId: null,
      postAnalyseStatus: "success",
    });

    expect(postBack.focusedItem).toBeNull();

    // Step 3: user clicks same question again — result reopens
    const reopened = simulateInitialFocus({
      focusedInvestigations: inv,
      focusedPresentationItemId: "nbfaikr",
      postAnalyseStatus: "success",
    });

    expect(reopened.focusedItem).toBe("nbfaikr");
    expect(reopened.hasContent).toBe(true);
    expect(reopened.focusedObj.result.observations).toContain("Structural blocker confirmed");
  });

  it("Run B green Investigation card NOT rendered during focused lifecycle", () => {
    const state = simulateInitialFocus({
      focusedInvestigations: {},
      focusedPresentationItemId: null,
      postAnalyseStatus: "success",
    });
    expect(state.surfaceVisible).toBe(true);
  });

  it("Run B OpenQuestionsPanel does NOT replace Run A during focused lifecycle", () => {
    const state = simulateInitialFocus({
      focusedInvestigations: {},
      focusedPresentationItemId: null,
      postAnalyseStatus: "success",
    });
    expect(state.surfaceVisible).toBe(true);
  });
});