import { expect, test, type Page, type Response } from "@playwright/test";
import { expectNoHorizontalOverflow, fetchAvailablePersona, signInAsLearner } from "./support";

interface SessionStartResponse {
  session_id: string;
}

async function expectResponseOk(response: { ok: () => boolean; text: () => Promise<string> }) {
  if (!response.ok()) {
    expect(response.ok(), await response.text()).toBeTruthy();
  }
}

function isReviewResponse(sessionId: string) {
  return (response: Response) => {
    const url = new URL(response.url());
    return (
      response.request().method() === "GET" &&
      url.pathname.endsWith(`/sessions/${sessionId}/review`)
    );
  };
}

async function createEndedSession(page: Page) {
  const persona = await fetchAvailablePersona(page, 1);
  const start = await page.request.post("/api/sessions", {
    data: {
      persona_code: persona.code,
      theory_mode: "humanistic",
    },
  });
  await expectResponseOk(start);

  const session = (await start.json()) as SessionStartResponse;
  const ended = await page.request.post(`/api/sessions/${session.session_id}/end`);
  await expectResponseOk(ended);
  return session.session_id;
}

async function expectReviewRegionsReachable(page: Page) {
  await expect(page.locator(".sr-overview")).toBeVisible();
  await expect(page.locator(".sr-feedback")).toBeVisible();
  await expect(page.locator(".sr-card--chart")).toBeVisible();
  await expect(page.locator(".sr-card--flow")).toBeVisible();
  await expect(page.locator(".sr-card--rubric")).toBeVisible();
  await expect(page.locator(".sr-card--transcript")).toBeVisible();

  const grid = await page.locator(".sr-cols").evaluate((el) => {
    const style = window.getComputedStyle(el);
    return {
      display: style.display,
      areas: style.gridTemplateAreas,
    };
  });
  expect(grid.display).toBe("grid");
  expect(grid.areas).toContain("overview");
  expect(grid.areas).toContain("feedback");
  expect(grid.areas).toContain("transcript");

  await expect(page.locator(".sr-overview")).toBeInViewport();
  await page.locator(".sr-card--transcript").scrollIntoViewIfNeeded();
  await expect(page.locator(".sr-card--transcript")).toBeInViewport();
}

test.describe("session review", () => {
  test("renders server review data without legacy transcript fixtures", async ({ page }) => {
    await signInAsLearner(page);
    const sessionId = await createEndedSession(page);

    const reviewResponsePromise = page.waitForResponse(isReviewResponse(sessionId));
    await page.goto(`/learn/session/${sessionId}/review`);
    const reviewResponse = await reviewResponsePromise;
    await expectResponseOk(reviewResponse);

    const review = await reviewResponse.json();
    expect(review.session_id).toBe(sessionId);
    expect(review.reviewReady).toBe(false);
    expect(review.turns).toHaveLength(0);

    await expect(page).toHaveURL(new RegExp(`/learn/session/${sessionId}/review$`));
    await expect(page.getByText("축어록 없음")).toBeVisible();
    await expect(page.getByText("감정 타임라인 대기")).toBeVisible();
    await expect(page.getByText("개선점 대기")).toBeVisible();
    await expect(page.getByRole("button", { name: "오디오 다시 듣기" })).toBeDisabled();
    await expect(page.getByRole("button", { name: "PDF 내보내기" })).toBeDisabled();
    await expect(page.getByText("32분 14초")).toHaveCount(0);
    await expect(page.getByText("시연")).toHaveCount(0);
    await expectReviewRegionsReachable(page);
    const filterMetrics = await page.locator(".sr-chip-toggle").evaluateAll((buttons) =>
      buttons.map((button) => {
        const rect = button.getBoundingClientRect();
        const style = window.getComputedStyle(button);
        return {
          height: Math.ceil(rect.height),
          whiteSpace: style.whiteSpace,
        };
      }),
    );
    expect(filterMetrics.every((item) => item.height <= 34 && item.whiteSpace === "nowrap")).toBe(
      true,
    );
    await expectNoHorizontalOverflow(page);
  });
});