import { expect, test, type Page } from "@playwright/test";

const sessionId = "33333333-3333-4333-8333-333333333333";
const learnerText = "요즘 많이 힘들었겠어요. 어떤 마음이 가장 크게 남아 있나요?";
const clientReply = "괜찮아요. 천천히 말해볼게요.";

function deferred() {
  let resolve!: () => void;
  const promise = new Promise<void>((next) => {
    resolve = next;
  });
  return { promise, resolve };
}

interface RouteMvpOptions {
  endStatus?: number;
  endBody?: unknown;
  crisisStream?: boolean;
}

async function routeMvpApi(page: Page, options: RouteMvpOptions = {}) {
  const sessionStartRequests: unknown[] = [];
  const liveCoachRequests: unknown[] = [];
  const streamSeen = deferred();
  const streamGate = deferred();

  await page.route("**/api/auth/me", async (route) => {
    await route.fulfill({
      status: 200,
      contentType: "application/json",
      body: JSON.stringify({
        user_id: "00000000-0000-0000-0000-00000000e2e1",
        email: "mvp.learner@hs.ac.kr",
        display_name: "MVP Learner",
        role: "learner",
        admin_access: false,
        super_admin: false,
        account_status: "approved",
        approval_required: false,
        cohort_ids: [],
        consent_at: Math.floor(Date.now() / 1000),
        onboarding_completed_at: Math.floor(Date.now() / 1000),
        nickname: "MVP Learner",
        self_introduction: "MVP 회기 흐름 검증용 학습자입니다.",
        avatar_url: "",
      }),
    });
  });

  await page.route("**/api/users/me/prepost-measures**", async (route) => {
    await route.fulfill({
      status: 200,
      contentType: "application/json",
      body: JSON.stringify({
        pilot_id: "phase3-pilot-draft",
        instrument_version: "pilot-prepost-scaffold-2026-06-28",
        measures: [],
        complete_pre_count: 0,
        complete_post_count: 0,
        updated_at: null,
      }),
    });
  });

  await page.route("**/api/personas", async (route) => {
    await route.fulfill({
      status: 200,
      contentType: "application/json",
      body: JSON.stringify([
        {
          code: "P1",
          display_name: "민서(청소년 우울)",
          difficulty: "hard",
          theory_target: ["humanistic"],
          demographics: { age_band: "10대" },
          presenting_summary: "자퇴와 무기력감을 둘러싼 상담 연습",
          voice_preset: "soft-young-fem",
          source: "database",
          degraded: false,
        },
      ]),
    });
  });

  await page.route("**/api/sessions", async (route) => {
    if (route.request().method() !== "POST") {
      await route.fallback();
      return;
    }
    sessionStartRequests.push(route.request().postDataJSON());
    await route.fulfill({
      status: 201,
      contentType: "application/json",
      body: JSON.stringify({
        session_id: sessionId,
        case_id: "mvp-case-001",
        session_no: 1,
        stage: "라포",
        effective_openness: 0.21,
        recall_summary: null,
        degraded: false,
      }),
    });
  });

  await page.route(`**/api/sessions/${sessionId}`, async (route) => {
    await route.fulfill({
      status: 200,
      contentType: "application/json",
      body: JSON.stringify({
        session_id: sessionId,
        case_id: "mvp-case-001",
        persona_code: "P1",
        persona_name: "민서",
        session_no: 1,
        status: "active",
        stage: "라포",
        theory_mode: "cbt",
        effective_openness: 0.21,
        started_at: new Date().toISOString(),
        ended_at: null,
        review_ready: false,
        turns: [],
      }),
    });
  });

  await page.route(`**/api/sessions/${sessionId}/stream`, async (route) => {
    streamSeen.resolve();
    await streamGate.promise;
    if (options.crisisStream) {
      const crisisResource = {
        title: "자살예방상담전화 109",
        number: "109",
        message: "지금은 연습을 멈추고 실제 안전 확인이 먼저입니다.",
      };
      await route.fulfill({
        status: 200,
        contentType: "text/event-stream",
        body: [
          "event: safety",
          `data: ${JSON.stringify({
            crisis_resource: crisisResource,
            conversation_stopped: true,
          })}`,
          "",
          "event: done",
          `data: ${JSON.stringify({
            session_id: sessionId,
            stage: "라포",
            effective_openness: 0.21,
            turn_seq: 1,
            safety_flagged: true,
            crisis_resource: crisisResource,
            conversation_stopped: true,
          })}`,
          "",
        ].join("\n"),
      });
      return;
    }
    await route.fulfill({
      status: 200,
      contentType: "text/event-stream",
      body: [
        "event: token",
        `data: ${clientReply}`,
        "",
        "event: done",
        `data: ${JSON.stringify({
          session_id: sessionId,
          stage: "탐색",
          effective_openness: 0.42,
          turn_seq: 1,
          safety_flagged: false,
        })}`,
        "",
      ].join("\n"),
    });
  });

  await page.route(`**/api/sessions/${sessionId}/end`, async (route) => {
    const status = options.endStatus ?? 200;
    await route.fulfill({
      status,
      contentType: "application/json",
      body: JSON.stringify(
        options.endBody ?? {
          session_id: sessionId,
          session_no: 1,
          digest_pending: true,
          end_state: { stage: "탐색", turn_seq: 1, effective_openness: 0.42 },
        },
      ),
    });
  });

  await page.route(`**/api/sessions/${sessionId}/live-coach`, async (route) => {
    const request = route.request();
    if (request.method() === "GET") {
      await route.fulfill({
        status: 200,
        contentType: "application/json",
        body: JSON.stringify({ source: "runtime", events: [] }),
      });
      return;
    }
    liveCoachRequests.push(request.postDataJSON());
    await route.fulfill({
      status: 200,
      contentType: "application/json",
      body: JSON.stringify({
        status: "ready",
        tone: "pos",
        focus: "reflection",
        title: "감정 반영이 선명합니다",
        message: "학습자가 내담자의 감정을 평가하지 않고 먼저 되짚었습니다.",
        next_utterance: "그 마음이 가장 크게 올라온 장면을 조금 더 들려줄 수 있을까요?",
        rationale: "방금 발화는 정서 반영과 개방 질문을 함께 포함합니다.",
        sources: [
          {
            source_id: "live_coaching_workbook_0615",
            title: "0615 사례개념화 워크북",
            locator: "reflection",
            kb_kind: "source_pack",
            version: "2026-06-15",
            citation: "허가된 요약 근거",
          },
        ],
        safety_note: null,
        latency_ms: 12,
      }),
    });
  });

  await page.route(`**/api/sessions/${sessionId}/review`, async (route) => {
    await route.fulfill({
      status: 200,
      contentType: "application/json",
      body: JSON.stringify({
        session_id: sessionId,
        client: {
          name: "민서",
          initial: "민",
          persona: "P1 · hard",
        },
        date: "2026-06-26",
        durationLabel: "1분 02초",
        durationSeconds: 62,
        reachedPhase: "탐색",
        sessionSignal: "종료됨",
        supervisorState: "평가 완료",
        supervisorName: "AI",
        summary: "평가 AI가 저장된 축어록을 분석했습니다.",
        phases: [{ key: "explore", label: "탐색", weight: 1 }],
        phaseAxis: ["0:00", "1:02"],
        valenceAxis: ["0:00", "1:02"],
        clientValence: [],
        counselorBaseline: [],
        turns: [
          {
            id: "t1",
            ts: "0:01",
            speaker: "learner",
            who: "학습자",
            text: learnerText,
            techniques: [],
            note: null,
          },
          {
            id: "t2",
            ts: "0:04",
            speaker: "client",
            who: "민서",
            text: clientReply,
            techniques: [],
            note: null,
          },
        ],
        rubric: [],
        goodMoments: [{ title: "반영", body: "학습자가 정서를 먼저 반영했습니다." }],
        growthPoints: [{ title: "탐색 확장", body: "다음 턴에서 구체 상황을 더 묻습니다." }],
        nextLine: "그 말을 꺼내는 것도 쉽지 않았을 것 같아요.",
        clientFeedback: clientReply,
        audioUrl: null,
        pdfExportUrl: null,
        degraded: false,
        reviewReady: true,
      }),
    });
  });

  return { sessionStartRequests, liveCoachRequests, streamGate, streamSeen };
}

test.describe("P1 MVP core loop", () => {
  test("runs login, P1 text stream, session end, and review feedback @single-run", async ({
    page,
  }) => {
    const diagnostics: string[] = [];
    page.on("pageerror", (error) => diagnostics.push(`pageerror: ${error.message}`));
    page.on("console", (message) => {
      if (message.type() === "error") diagnostics.push(`console: ${message.text()}`);
    });
    const api = await routeMvpApi(page);

    await page.goto("/learn/session/P1");
    await expect(
      page.getByRole("button", { name: "회기 시작" }),
      diagnostics.join("\n") || (await page.locator("#root").innerText().catch(() => "")),
    ).toBeVisible();
    await page.getByRole("button", { name: /CBT/ }).click();
    await page.getByRole("button", { name: "회기 시작" }).click();

    await expect(page.locator(".sx-page.sx-page--active")).toBeVisible();
    expect(api.sessionStartRequests[0]).toMatchObject({
      persona_code: "P1",
      theory_mode: "cbt",
    });
    await page.getByLabel("학습자 발화 입력").fill(learnerText);
    await page.getByRole("button", { name: "보내기" }).click();

    await api.streamSeen.promise;
    await expect(page.locator(".sx-utt").filter({ hasText: learnerText })).toBeVisible();
    await expect(page.locator(".sx-utt.is-thinking").filter({ hasText: "답변을 준비 중입니다." })).toBeVisible();
    await expect(page.getByLabel("학습자 발화 입력")).toBeDisabled();

    api.streamGate.resolve();
    await expect(page.locator(".sx-utt").filter({ hasText: clientReply })).toBeVisible();
    await expect(page.getByLabel("학습자 발화 입력")).toBeEnabled();

    await page.getByRole("button", { name: "회기 종료" }).click();
    await page.getByRole("button", { name: "종료하고 리뷰 보기" }).click();

    await expect(page).toHaveURL(new RegExp(`/learn/session/${sessionId}/review$`));
    await expect(page.getByText("내담자가 남긴 것")).toBeVisible();
    await expect(page.locator(".sr-feedback").getByText(clientReply)).toBeVisible();
    await expect(page.getByText("평가 AI가 저장된 축어록을 분석했습니다.")).toBeVisible();
  });

  test("shows AI tutor coaching in coached mode after a completed turn", async ({ page }) => {
    const api = await routeMvpApi(page);

    await page.goto("/learn/session/P1");
    await page.getByRole("button", { name: "회기 시작" }).click();
    await page.getByRole("button", { name: "코칭" }).click();
    await page.getByLabel("학습자 발화 입력").fill(learnerText);
    await page.getByRole("button", { name: "보내기" }).click();

    await api.streamSeen.promise;
    api.streamGate.resolve();

    await expect(page.locator(".sx-coach-card").getByText("감정 반영이 선명합니다")).toBeVisible();
    await expect(
      page.getByText("학습자가 내담자의 감정을 평가하지 않고 먼저 되짚었습니다."),
    ).toBeVisible();
    expect(api.liveCoachRequests).toHaveLength(1);
    expect(api.liveCoachRequests[0]).toMatchObject({
      learner_text: learnerText,
      client_reply: clientReply,
      turn_seq: 1,
    });
  });

  test("keeps crisis safety gate visible instead of showing empty client reply @single-run", async ({ page }) => {
    const api = await routeMvpApi(page, { crisisStream: true });

    await page.goto("/learn/session/P1");
    await page.getByRole("button", { name: "회기 시작" }).click();
    await page.getByRole("button", { name: "코칭" }).click();
    await page.getByLabel("학습자 발화 입력").fill("저 지금 자살하고 싶어요. 도와주세요.");
    await page.getByRole("button", { name: "보내기" }).click();

    await api.streamSeen.promise;
    api.streamGate.resolve();

    await expect(page.locator(".sx-crisis-resource").getByText("자살예방상담전화 109")).toBeVisible();
    await expect(page.getByRole("link", { name: "109" })).toBeVisible();
    await expect(
      page.locator(".sx-signal__one-text").filter({ hasText: "위기 안전게이트 작동" }),
    ).toBeVisible();
    await expect(page.getByText("내담자 응답 없음")).toHaveCount(0);
    await expect(page.locator(".sx-utt.is-client")).toHaveCount(0);
    await expect(page.getByLabel("학습자 발화 입력")).toBeDisabled();
    expect(api.liveCoachRequests).toHaveLength(0);
  });

  test("does not navigate to review when session end fails", async ({ page }) => {
    await routeMvpApi(page, {
      endStatus: 503,
      endBody: { detail: "session end persistence unavailable" },
    });

    await page.goto("/learn/session/P1");
    await page.getByRole("button", { name: "회기 시작" }).click();
    await page.getByRole("button", { name: "회기 종료" }).click();
    await page.getByRole("button", { name: "종료하고 리뷰 보기" }).click();

    await expect(page).toHaveURL(new RegExp(`/learn/session/${sessionId}$`));
    await expect(page.getByRole("alert")).toContainText("회기 종료에 실패했습니다.");
    await expect(page.getByRole("alert")).toContainText("session end persistence unavailable");
  });
});