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

const basicBlend = path.resolve(import.meta.dirname, "../../../tests/files/web/basic_scene.blend");

test("M7-12 removes only one project's unreferenced content-addressed assets", async ({ page }) => {
  await page.goto("/");
  await expect(page.getByTestId("engine-status")).toContainText("ready, open a .blend file", { timeout: 20_000 });
  await page.getByTestId("blend-file-input").setInputFiles(basicBlend);
  await expect(page.getByText("Cube", { exact: true })).toBeVisible();
  const download = page.waitForEvent("download");
  await page.getByRole("button", { name: "保存项目" }).click();
  await download;

  const orphanA = "a".repeat(64);
  const orphanB = "b".repeat(64);
  const referenced = await page.evaluate(async ({ orphanA, orphanB }) => {
    const { StorageClient } = await import("/src/storage/StorageClient.ts");
    const storage = new StorageClient();
    const keptA = await storage.putAsset("basic_scene", new Uint8Array(5).buffer, "image/png", "media/kept.png");
    await storage.putAsset("cleanup-other", new Uint8Array(6).buffer, "image/png", "media/other.png");
    const root = await navigator.storage.getDirectory();
    const writeOrphan = async (projectId: string, hash: string, size: number) => {
      let current = root;
      for (const segment of ["projects", projectId, "assets", "sha256", hash.slice(0, 2)]) current = await current.getDirectoryHandle(segment, { create: true });
      const handle = await current.getFileHandle(hash, { create: true });
      const writer = await handle.createWritable();
      await writer.write(new Uint8Array(size));
      await writer.close();
    };
    await writeOrphan("basic_scene", orphanA, 19);
    await writeOrphan("cleanup-other", orphanB, 23);
    storage.terminate();
    return { keptA: keptA.sha256, orphanA, orphanB };
  }, { orphanA, orphanB });

  await page.reload();
  await expect(page.getByTestId("engine-status")).toContainText("ready, open a .blend file", { timeout: 20_000 });
  await page.getByTestId("cleanup-project-assets").click();
  await expect(page.locator(".status-bar")).toContainText("removed 1 orphan asset(s), 19 bytes");
  const files = await page.evaluate(async ({ orphanA, orphanB, keptA }) => {
    const root = await navigator.storage.getDirectory();
    const read = async (projectId: string, hash: string) => {
      try {
        let current = root;
        for (const segment of ["projects", projectId, "assets", "sha256", hash.slice(0, 2)]) current = await current.getDirectoryHandle(segment);
        await current.getFileHandle(hash);
        return true;
      }
      catch { return false; }
    };
    return { orphanA: await read("basic_scene", orphanA), orphanB: await read("cleanup-other", orphanB), keptA: await read("basic_scene", keptA) };
  }, referenced);
  expect(files).toEqual({ orphanA: false, orphanB: true, keptA: true });
});