import { expect, test } from "@playwright/test";
import {
  expectNoDocumentOverflow,
  expectNoHorizontalOverflow,
  fetchAvailablePersona,
  fetchAvailablePersonas,
  completeOnboarding,
  signInAsLearner,
  useRealApi,
} from "./support";

async function signInAsLearnerEmail(
  page: import("@playwright/test").Page,
  email: string,
  displayName = "History Learner",
) {
  const res = await page.request.post("/api/auth/dev-login", {
    data: {
      email,
      role: "learner",
      display_name: displayName,
    },
  });
  expect(res.ok(), await res.text()).toBeTruthy();
  await completeOnboarding(page, {
    legal_name: displayName,
    affiliation: "한신대학교",
    department: "상담심리학과",
    grade_level: "3학년",
    phone: "010-2222-2222",
    contact_address: "경기도 오산시 한신대학교",
  });
}

async function createPracticeSession(page: import("@playwright/test").Page, personaCode?: string) {
  const selectedPersonaCode = personaCode ?? (await fetchAvailablePersona(page)).code;
  const res = await page.request.post("/api/sessions", {
    data: {
      persona_code: selectedPersonaCode,
      theory_mode: "humanistic",
    },
  });
  expect(res.ok(), await res.text()).toBeTruthy();
  return (await res.json()) as { session_id: string };
}

async function expectNoLearnerInternalCopy(page: import("@playwright/test").Page) {
  await expect(page.getByText(/API|GET \/|OPENAI_API_KEY|teacher\/dashboard/)).toHaveCount(0);
}

async function expectVisibleResumeLoadedSignal(page: import("@playwright/test").Page) {
  const result = await page.evaluate(() => {
    const candidates = Array.from(
      document.querySelectorAll<HTMLElement>(
        ".sx-page--active .sx-mobile-context__resume, .sx-page--active .sx-mic-block__h",
      ),
    );
    return candidates.map((el) => {
      const rect = el.getBoundingClientRect();
      const style = window.getComputedStyle(el);
      return {
        text: el.textContent ?? "",
        visible:
          style.display !== "none" &&
          style.visibility !== "hidden" &&
          Number(style.opacity) !== 0 &&
          rect.width > 0 &&
          rect.height > 0,
      };
    });
  });

  expect(
    result.some(
      (entry) => entry.visible && entry.text.includes("이전 회기 기록을 불러왔습니다."),
    ),
    `Expected visible resume-loaded signal: ${JSON.stringify(result)}`,
  ).toBeTruthy();
}

async function expectReachableLearnerHomeLayout(page: import("@playwright/test").Page) {
  await expect(page.locator(".lh-preview__main")).toBeVisible();
  await expect(page.locator(".lh-activity")).toBeVisible();
  await expect(page.getByRole("button", { name: "새 회기 시작" })).toBeInViewport();

  const rootOverflow = await page.locator(".lh-root").evaluate((root) => {
    const style = window.getComputedStyle(root);
    return { overflow: style.overflow, overflowY: style.overflowY };
  });
  expect(rootOverflow.overflow).not.toBe("hidden");
  expect(rootOverflow.overflowY).not.toBe("hidden");

  await expectNoHorizontalOverflow(page);
}

async function expectPersonaCardsUseContentHeight(page: import("@playwright/test").Page) {
  const cards = await page.locator(".lh-persona").evaluateAll((items) =>
    items.map((item) => {
      const card = item as HTMLElement;
      const rect = card.getBoundingClientRect();
      const summary = card.querySelector<HTMLElement>(".lh-persona__summary");
      const body = card.querySelector<HTMLElement>(".lh-persona__body");
      const textNodes = Array.from(
        card.querySelectorAll<HTMLElement>(
          ".lh-persona__name, .lh-persona__meta, .lh-persona__summary",
        ),
      );
      const childBottom = Math.max(
        0,
        ...textNodes.map((child) => child.getBoundingClientRect().bottom),
      );
      return {
        label: (card.textContent ?? "").replace(/\s+/g, " ").trim().slice(0, 90),
        height: Math.ceil(rect.height),
        bodyOverflow: body ? Math.ceil(body.scrollHeight - body.clientHeight) : 0,
        childBottomOverflow: Math.ceil(childBottom - rect.bottom),
        cardScrollOverflow: Math.ceil(card.scrollHeight - card.clientHeight),
        summaryOverflow: summary ? Math.ceil(summary.scrollHeight - summary.clientHeight) : 0,
      };
    }),
  );

  const offenders = cards.filter(
    (card) =>
      card.bodyOverflow > 1 ||
      card.childBottomOverflow > 1 ||
      card.cardScrollOverflow > 1 ||
      card.summaryOverflow > 1,
  );
  expect(offenders, `Persona card text should fit its fluid-height card: ${JSON.stringify(cards)}`).toEqual([]);
}

function learnerActivityHeading(page: import("@playwright/test").Page) {
  return page.locator(".lh-activity__head").getByText("기존 회기", { exact: true });
}

test.describe("learner app shell and session launcher", () => {
  test.beforeEach(async ({ page }) => {
    await useRealApi(page);
  });

  test("redirects an unauthenticated learner route to login", async ({ page }) => {
    await page.goto("/learn/practice");

    await expect(page).toHaveURL(/\/login$/);
    await expect(page.getByRole("button", { name: /학교 Google 계정으로 계속/ })).toBeVisible();
    expect(await page.evaluate(() => window.localStorage.getItem("vignette.dev-auth"))).toBeNull();
  });

  test("redirects to login when a protected learner API returns 401 after boot", async ({ page }) => {
    await page.route("**/api/auth/me", async (route) => {
      await route.fulfill({
        status: 200,
        contentType: "application/json",
        body: JSON.stringify({
          user_id: "stale-learner",
          email: "stale.learner@hs.ac.kr",
          display_name: "Stale Learner",
          role: "learner",
          admin_access: false,
          super_admin: false,
          account_status: "approved",
          approval_required: false,
          cohort_ids: [],
          consent_at: 1,
          onboarding_completed_at: 1,
          nickname: "Stale Learner",
          self_introduction: "",
          avatar_url: "",
        }),
      });
    });
    await page.route(/\/api\/(personas|sessions(?:\/dashboard)?)$/, async (route) => {
      await route.fulfill({
        status: 401,
        contentType: "application/json",
        body: JSON.stringify({ detail: "not authenticated" }),
      });
    });

    await page.goto("/learn/practice");

    await expect(page).toHaveURL(/\/login$/);
    await expect(page.getByRole("button", { name: /학교 Google 계정으로 계속/ })).toBeVisible();
    await expect(page.getByText("내담자 목록을 불러오지 못했습니다.")).toHaveCount(0);
  });

  test("renders API personas without legacy session rows", async ({ page }) => {
    await signInAsLearnerEmail(page, `learner.catalog.${Date.now()}@hs.ac.kr`, "Catalog Learner");
    await page.goto("/learn/practice");
    const personas = await fetchAvailablePersonas(page);
    await expect(page.locator(".lh-root")).toBeVisible({ timeout: 15_000 });

    const launcher = page.getByRole("listbox", { name: "연습 페르소나" });
    await expect(launcher).toBeVisible();
    await expect(launcher.getByRole("option")).toHaveCount(personas.length, { timeout: 15_000 });
    for (const persona of personas) {
      await expect(launcher.getByRole("option", { name: new RegExp(persona.code) })).toBeVisible();
      await expect(launcher.getByRole("option", { name: new RegExp(persona.display_name.replace(/[.*+?^${}()|[\]\\]/g, "\\$&")) })).toBeVisible();
    }
    await expectPersonaCardsUseContentHeight(page);

    await expect(page.getByText(/12회/)).toHaveCount(0);
    await expect(page.getByText(/최근 연습/)).toHaveCount(0);
    await expect(page.locator(".vg-nav")).toBeVisible();
    await expect(page.locator(".vg-main")).not.toHaveClass(/(^|\s)vg-main--bleed(\s|$)/);
    await expect(page.getByText("음성")).toBeVisible();
    await page.getByText("음성").scrollIntoViewIfNeeded();
    await expect(page.getByText("음성")).toBeInViewport();
    await page.getByRole("button", { name: "새 회기 시작" }).scrollIntoViewIfNeeded();
    await expectReachableLearnerHomeLayout(page);
    const activityHeading = learnerActivityHeading(page);
    await activityHeading.scrollIntoViewIfNeeded();
    await expect(activityHeading).toBeInViewport();
    await expectNoLearnerInternalCopy(page);
  });

  test("routes the launcher CTA to the selected database persona", async ({ page }) => {
    await signInAsLearner(page);
    await page.goto("/learn/practice");
    const persona = await fetchAvailablePersona(page, 1);

    const option = page.getByRole("option", { name: new RegExp(persona.code) });
    await option.click();
    await expect(option).toHaveAttribute("aria-selected", "true");

    await page.getByRole("button", { name: "새 회기 시작" }).click();

    await expect(page).toHaveURL(new RegExp(`/learn/session/${persona.code}$`));
    await expect(page.getByRole("button", { name: "회기 시작" })).toBeVisible();
    // 프리플라이트(목표 선택 포함)는 좁은 뷰포트에서 세로 스크롤을 허용한다 — 데스크톱만 무스크롤 계약.
    if ((page.viewportSize()?.width ?? 0) > 1180) {
      await expectNoDocumentOverflow(page);
    }

    await page.getByRole("button", { name: "회기 시작" }).click();

    await expect(page.locator(".sx-grid")).toBeVisible();
    await expectNoLearnerInternalCopy(page);
    await expectNoDocumentOverflow(page);
    await expectNoHorizontalOverflow(page);
  });

  test("shows real session history with resume, record, and retry actions", async ({
    page,
  }, testInfo) => {
    const suffix = `${testInfo.project.name.replace(/\W+/g, "-")}-${testInfo.workerIndex}-${Date.now()}`.toLowerCase();
    await signInAsLearnerEmail(page, `history.${suffix}@hs.ac.kr`);

    const persona = await fetchAvailablePersona(page);
    const active = await createPracticeSession(page, persona.code);
    const ended = await createPracticeSession(page, persona.code);
    const endResponse = await page.request.post(`/api/sessions/${ended.session_id}/end`);
    expect(endResponse.ok(), await endResponse.text()).toBeTruthy();

    await page.goto("/learn");
    await expect(page.locator(".lh-root")).toBeVisible({ timeout: 15_000 });
    await expect(page.getByRole("heading", { name: "오늘 이어갈 회기를 먼저 봅니다." })).toBeVisible();
    await expect(page.getByLabel("학습 현황")).toContainText("진행 회기");
    await expect(page.getByLabel("학습 현황")).toContainText("2회");
    await expect(page.getByLabel("학습 현황")).toContainText("리뷰 대기");
    await expect(page.getByLabel("학습 현황")).toContainText("최근 평가");
    await expect(page.getByLabel("최근 피드백")).toContainText("평가 피드백은 회기 종료 후 표시됩니다.");

    await page.goto("/learn/history");
    await expect(
      page.getByRole("heading", { name: "회기 기록을 찾고 정리합니다." }),
    ).toBeVisible({ timeout: 15_000 });
    await expect(page.locator(".lh-history-main")).toBeVisible();
    await expect(page.getByLabel("기록 검색")).toBeVisible();
    await expect(page.locator(".lh-history-overview")).toContainText("전체");
    await expect(page.locator(".lh-history-overview")).toContainText("진행 중");
    await expect(page.locator(".lh-history-overview")).toContainText("보관됨");
    await expect(page.getByRole("button", { name: "이어하기" })).toBeVisible();
    await expect(page.getByRole("button", { name: "기록", exact: true })).toBeVisible();
    await expect(page.getByRole("button", { name: "다시 연습" })).toHaveCount(2);
    await expect(page.locator(".lh-archive-note")).toContainText("읽기 전용");
    await expectNoHorizontalOverflow(page);
    await page.locator(".lh-history-main").scrollIntoViewIfNeeded();
    await expect(page.getByRole("button", { name: "이어하기" })).toBeInViewport();
    await expect(page.getByRole("button", { name: "기록", exact: true })).toBeInViewport();
    await expect(page.getByRole("button", { name: "다시 연습" }).first()).toBeInViewport();
    await expect(page.locator(".lh-history-main")).toContainText("2개");
    await expect(page.locator(".lh-persona-progress")).toContainText(persona.code);
    await expect(page.locator(".lh-persona-progress")).toContainText("2회");

    await page.getByRole("button", { name: "보관", exact: true }).click();
    await expect(page.getByText("회기를 보관했습니다.")).toBeVisible();
    await page.locator(".lh-history-filter").getByRole("button", { name: "보관됨" }).click();
    await expect(page.locator(".lh-history-main")).toContainText("1개");
    await expect(page.getByRole("button", { name: "복원" })).toBeVisible();
    await page.getByRole("button", { name: "복원" }).click();
    await expect(page.getByText("보관을 해제했습니다.")).toBeVisible();
    await expect(page.locator(".lh-history-main")).toContainText("0개");
    await page.locator(".lh-history-filter").getByRole("button", { name: "전체" }).click();
    await expect(page.locator(".lh-history-main")).toContainText("2개");

    await page.getByRole("button", { name: "이어하기" }).click();

    await expect(page).toHaveURL(new RegExp(`/learn/session/${active.session_id}$`));
    await expect(page.locator(".sx-page.sx-page--active")).toBeVisible();
    await expectVisibleResumeLoadedSignal(page);
    await expectNoDocumentOverflow(page);
    await expectNoHorizontalOverflow(page);
  });

  test("does not fall back to P1 for an unavailable persona code", async ({ page }) => {
    await signInAsLearner(page);
    await page.goto("/learn/session/P9");

    await expect(
      page.getByRole("heading", { name: "연습 대상 정보를 확인하고 있습니다." }),
    ).toBeVisible({ timeout: 15_000 });
    await expect(page.getByText(/P9 페르소나는 현재 연습 목록에 없습니다/)).toBeVisible({
      timeout: 15_000,
    });
    await expect(page.getByText("페르소나 P9")).toHaveCount(0);
    await expect(page.getByRole("button", { name: "회기 시작" })).toBeDisabled();
    if ((page.viewportSize()?.width ?? 0) > 1180) {
      await expectNoDocumentOverflow(page);
    }
    await expectNoHorizontalOverflow(page);
  });

  test("blocks direct session starts for degraded or non-database personas", async ({ page }) => {
    await signInAsLearner(page);
    await page.route("**/api/personas", async (route) => {
      await route.fulfill({
        status: 200,
        contentType: "application/json",
        body: JSON.stringify([
          {
            code: "SEEDX",
            display_name: "검증 불가 내담자",
            difficulty: "easy",
            theory_target: ["humanistic"],
            demographics: { age_band: "20대" },
            presenting_summary: "서버 카탈로그 원본이 확인되지 않은 항목",
            voice_preset: null,
            source: "seed_fallback",
            degraded: true,
          },
        ]),
      });
    });

    await page.goto("/learn/session/SEEDX");

    await expect(
      page.getByRole("heading", { name: "이 내담자는 현재 연습에 사용할 수 없습니다." }),
    ).toBeVisible();
    await expect(page.getByText("카탈로그 원본을 확인하지 못해 현재 연습에 사용할 수 없습니다.")).toBeVisible();
    await expect(page.getByRole("button", { name: "회기 시작" })).toBeDisabled();
    if ((page.viewportSize()?.width ?? 0) > 1180) {
      await expectNoDocumentOverflow(page);
    }
    await expectNoHorizontalOverflow(page);
  });
});