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

const PNG_1X1_BASE64 =
  "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8BQDwAFgwJ/lTQvYwAAAABJRU5ErkJggg==";

function jsonRoute(body: unknown, status = 200) {
  return { status, contentType: "application/json", body: JSON.stringify(body) };
}

async function installOnboardingFixtures(page: Page, avatarUrl: string) {
  await page.route("**/api/**", (route) =>
    route.fulfill(jsonRoute({ detail: "not part of this focused fixture" }, 404)),
  );
  await page.route("**/api/auth/me", (route) =>
    route.fulfill(
      jsonRoute({
        user_id: "e2e-image-resilience",
        email: "avatar.fixture@hs.ac.kr",
        role: "learner",
        display_name: "온보딩 사용자",
        admin_access: false,
        super_admin: false,
        account_status: "approved",
        approval_required: false,
        cohort_ids: [],
        consent_at: null,
        onboarding_completed_at: null,
        nickname: "온보딩 사용자",
        self_introduction: "",
        avatar_url: avatarUrl,
      }),
    ),
  );
  await page.route("**/api/users/me", (route) =>
    route.fulfill(
      jsonRoute({
        user_id: "e2e-image-resilience",
        email: "avatar.fixture@hs.ac.kr",
        role: "learner",
        display_name: "온보딩 사용자",
        legal_name: "",
        affiliation: "한신대학교",
        department: "",
        grade_level: "",
        phone: "",
        contact_address: "",
        nickname: "온보딩 사용자",
        self_introduction: "",
        avatar_url: avatarUrl,
        cohort_ids: [],
      }),
    ),
  );
  await page.route("**/api/users/legal-docs", (route) =>
    route.fulfill(
      jsonRoute({
        terms: {
          kind: "terms",
          status: "draft",
          title: "서비스 이용약관",
          version: "image-resilience-fixture",
          body: "테스트 약관",
        },
        privacy: {
          kind: "privacy",
          status: "draft",
          title: "개인정보 처리방침",
          version: "image-resilience-fixture",
          body: "테스트 개인정보 처리방침",
        },
        source_note: "이미지 회복성 전용 fixture",
      }),
    ),
  );
}

test.describe("사용자 이미지 회복성", () => {
  test("대문자 외부 HTTPS URL도 안전하게 정규화해 실제 이미지로 전환한다", async ({
    page,
  }) => {
    const externalAvatar = "HTTPS://images.example.test/profile/avatar.png";
    await installOnboardingFixtures(page, externalAvatar);
    await page.route("https://images.example.test/profile/avatar.png", (route) =>
      route.fulfill({
        status: 200,
        contentType: "image/png",
        body: Buffer.from(PNG_1X1_BASE64, "base64"),
      }),
    );

    await page.goto("/onboarding");

    const preview = page.locator(".ob-avatar__preview");
    const image = preview.locator("img");
    await expect(image).toBeVisible();
    await expect(image).toHaveAttribute(
      "src",
      "https://images.example.test/profile/avatar.png",
    );
    await expect(preview.locator("[data-image-fallback]")).toHaveCount(0);
  });

  test("온보딩 아바타 파일이 404여도 깨진 아이콘 대신 닉네임 이니셜을 표시한다", async ({
    page,
  }) => {
    const staleAvatar = "/uploads/profile-avatars/stale-onboarding-avatar.jpg";
    await installOnboardingFixtures(page, staleAvatar);
    await page.route("**/api/uploads/profile-avatars/stale-onboarding-avatar.jpg", (route) =>
      route.fulfill(jsonRoute({ detail: "Not Found" }, 404)),
    );

    await page.goto("/onboarding");
    await expect(page.getByRole("heading", { name: "가입 정보를 입력합니다." })).toBeVisible();

    const preview = page.locator(".ob-avatar__preview");
    await expect(preview.locator("[data-image-fallback='failed']")).toHaveText("온");
    await expect(preview.locator("img")).toHaveCount(0);
  });

  test("지연된 이미지 응답 중에도 브라우저의 깨진 이미지 박스를 노출하지 않는다", async ({
    page,
  }) => {
    const delayedAvatar = "/uploads/profile-avatars/delayed-onboarding-avatar.jpg";
    let releaseImage: (() => void) | undefined;
    const imageGate = new Promise<void>((resolve) => {
      releaseImage = resolve;
    });

    await installOnboardingFixtures(page, delayedAvatar);
    await page.route("**/api/uploads/profile-avatars/delayed-onboarding-avatar.jpg", async (route) => {
      await imageGate;
      await route.fulfill({
        status: 200,
        contentType: "image/png",
        body: Buffer.from(PNG_1X1_BASE64, "base64"),
      });
    });

    await page.goto("/onboarding", { waitUntil: "domcontentloaded" });

    const preview = page.locator(".ob-avatar__preview");
    await expect(preview.locator("[data-image-fallback='loading']")).toHaveText("온");
    const pendingImage = preview.locator("img");
    await expect(pendingImage).toHaveAttribute("data-image-state", "loading");
    await expect(pendingImage).toBeHidden();
    await expect(pendingImage).toHaveCSS("display", "none");
    expect(await pendingImage.evaluate((image) => image.getBoundingClientRect().toJSON())).toMatchObject({
      width: 0,
      height: 0,
    });

    releaseImage?.();
    await expect(pendingImage).toBeVisible();
    await expect(pendingImage).toHaveAttribute("data-image-state", "ready");
    await expect(preview.locator("[data-image-fallback]")).toHaveCount(0);
  });
});