import { expect, test } from "@playwright/test";
import path from "node:path";
import { fileURLToPath } from "node:url";

const HERE = path.dirname(fileURLToPath(import.meta.url));
const STUDIO = path.resolve(HERE, "../../app/public/tutorial/pbr/studio.blend");
const GLB = path.resolve(HERE, "../../../re/猴头.glb");

test.use({ viewport: { width: 1600, height: 900 } });

async function openStudioAndMonkey(page: import("@playwright/test").Page): Promise<void> {
  await page.goto("/?ui=web");
  await page.locator("main.blender-app").waitFor({ timeout: 120_000 });
  await page.locator('[data-testid="blend-file-input"]').setInputFiles(STUDIO);
  await page.getByText(/Engine: SceneIR/).first().waitFor({ timeout: 120_000 });
  await expect.poll(async () => page.getByTestId("scene-stats").innerText(), { timeout: 120_000 }).toMatch(/Objects 6/);
  await page.locator('[data-testid="blend-file-input"]').setInputFiles(GLB);
  await expect.poll(async () => page.getByTestId("scene-stats").innerText(), { timeout: 120_000 }).toMatch(/Objects 7/);
}

async function ensureEditMode(page: import("@playwright/test").Page): Promise<void> {
  const status = page.locator('[data-testid="engine-status"]');
  if ((await status.innerText()).includes("模式：Edit")) return;
  try {
    await expect(status).toContainText("模式：Edit", { timeout: 5_000 });
    return;
  }
  catch { /* fall through to the explicit mode menu */ }
  await page.locator(".mode-chip button").first().evaluate((element) => (element as HTMLElement).click());
  const editMode = page.getByRole("menuitemcheckbox", { name: /编辑模式/ });
  await editMode.waitFor({ timeout: 15_000 });
  await editMode.evaluate((element) => (element as HTMLElement).click());
  await expect(status).toContainText("模式：Edit", { timeout: 60_000 });
  await page.keyboard.press("Escape");
}

async function openUVWorkspace(page: import("@playwright/test").Page): Promise<void> {
  // The native desktop canvas can sit above the workspace tab at the same
  // coordinates in headed Chromium; invoke the tab's DOM click directly.
  await page.locator(".workspace-tabs button", { hasText: "UV Editing" }).evaluate((element) => (element as HTMLElement).click());
  await expect(page.locator(".wasm-uv-editor")).toBeVisible({ timeout: 60_000 });
  await expect(page.locator(".uv-controls")).toBeVisible({ timeout: 60_000 });
  await expect.poll(async () => page.locator('[data-testid="editor-workflow-context"]').innerText(), { timeout: 60_000 })
    .toContain("UV Editing");
  // Desktop Blender's UV editor requires OB_MODE_EDIT (space_image.cc);
  // enter Edit explicitly rather than depending on a startup timing quirk.
  await ensureEditMode(page);
  await expect.poll(async () => page.locator(".wasm-uv-editor").innerText(), { timeout: 60_000 }).toContain("原生 UV 选择");
}

async function selectAllAndUnwrap(page: import("@playwright/test").Page): Promise<void> {
  await page.locator(".wasm-uv-editor button", { hasText: "全选 UV" }).evaluate((element) => (element as HTMLElement).click());
  await expect.poll(async () => page.locator(".wasm-uv-editor").innerText(), { timeout: 60_000 }).toContain("UV 选择已提交");
  await page.locator(".wasm-uv-editor button", { hasText: "展开所选 UV" }).evaluate((element) => (element as HTMLElement).click());
  await expect.poll(async () => page.locator(".wasm-uv-editor").innerText(), { timeout: 60_000 }).toContain("展开 UV已提交");
}

test("UV Editing finds a writable native UV area and commits an unwrap", async ({ page }) => {
  test.setTimeout(300_000);
  await openStudioAndMonkey(page);
  await openUVWorkspace(page);
  await expect(page.locator('[data-testid="engine-status"]')).toContainText("模式：Edit", { timeout: 60_000 });

  const before = Number(await page.locator("main.blender-app").getAttribute("data-project-snapshot-revision") ?? "0");
  await selectAllAndUnwrap(page);
  const after = Number(await page.locator("main.blender-app").getAttribute("data-project-snapshot-revision") ?? "0");
  expect(after).toBeGreaterThan(before);
});

test("UV workspace survives save and reopen", async ({ page }) => {
  test.setTimeout(360_000);
  await openStudioAndMonkey(page);
  await openUVWorkspace(page);
  await selectAllAndUnwrap(page);

  // Save through the OPFS project transaction (the download is a side effect
  // of the same commit), then reload and reopen the recent OPFS project.
  await page.locator('button[aria-label="保存项目"]').evaluate((element) => (element as HTMLElement).click());
  await expect(page.locator("main.blender-app")).toHaveAttribute("data-user-action-save-status", "SUCCEEDED", { timeout: 60_000 });
  await page.reload();
  await page.locator("main.blender-app").waitFor({ timeout: 120_000 });
  await expect.poll(async () => page.locator('[data-testid="recent-projects"] option').count(), { timeout: 60_000 }).toBeGreaterThan(1);
  await page.locator('[data-testid="recent-projects"]').selectOption({ index: 1 });
  const discard = page.getByRole("button", { name: "不保存，继续", exact: true });
  if (await discard.count()) await discard.click();
  await expect.poll(async () => page.getByTestId("scene-stats").innerText(), { timeout: 120_000 }).toMatch(/Objects 7/);
  await openUVWorkspace(page);
  await expect(page.locator(".uv-controls")).toBeVisible({ timeout: 60_000 });
  await expect.poll(async () => page.locator(".wasm-uv-editor").innerText(), { timeout: 60_000 }).toContain("原生 UV 选择");
});