import { existsSync } from "node:fs";
import { mkdtemp, rm } from "node:fs/promises";
import { tmpdir } from "node:os";
import { join } from "node:path";
import { afterAll, beforeAll, describe, expect, it } from "vitest";
import { createSubtitlesModule } from "../../src/modules/subtitles/index.ts";
import * as lfs from "../../src/storage/local-fs.ts";
import { createHarness, type Harness, pgAvailable } from "../auth-settings/harness.ts";
import { DEV_KEY } from "../helpers.ts";

// server 侧本地写入口(整理 / 刮削 / 字幕 / 回收站 / 上传共用的 storage/local-fs.ts)对 Alist 虚拟路径一律拒绝,
// 本机不出现 /@alist;补字幕的目标在 Alist 媒体库上时明确失败(不支持),不往本机写。

const V = "/@alist/00000000-0000-4000-8000-0000000000ee/s1/lib";
const code = async (p: Promise<unknown>) => {
  try {
    await p;
  } catch (e) {
    return (e as { code?: string }).code;
  }
  return "no-error";
};

describe("local-fs 写入口守卫", () => {
  let dir: string;
  beforeAll(async () => {
    dir = await mkdtemp(join(tmpdir(), "umt-lfs-"));
    await lfs.writeFile(join(dir, "a.txt"), "x");
  });
  afterAll(async () => {
    await rm(dir, { recursive: true, force: true });
  });

  it("mkdir / writeFile / rename / copyFile / rm / rmdir / unlink / link / open(写)都拒绝虚拟路径", async () => {
    const R = "REMOTE_PATH_ON_LOCAL_FS";
    expect(await code(lfs.mkdir(`${V}/d`, { recursive: true }))).toBe(R);
    expect(await code(lfs.writeFile(`${V}/a.nfo`, "<movie/>"))).toBe(R);
    expect(await code(lfs.rename(join(dir, "a.txt"), `${V}/a.txt`))).toBe(R);
    expect(await code(lfs.copyFile(join(dir, "a.txt"), `${V}/a.txt`))).toBe(R);
    expect(await code(lfs.rm(`${V}/a.txt`, { force: true }))).toBe(R);
    expect(await code(lfs.rmdir(V))).toBe(R);
    expect(await code(lfs.unlink(`${V}/a.txt`))).toBe(R);
    expect(await code(lfs.link(join(dir, "a.txt"), `${V}/a.txt`))).toBe(R);
    expect(await code(lfs.open(`${V}/a.txt`, "w"))).toBe(R);
    expect(existsSync("/@alist")).toBe(false);
    expect(existsSync(join(dir, "a.txt"))).toBe(true);
  });

  it("本地路径与只读打开照常", async () => {
    await lfs.mkdir(join(dir, "sub"), { recursive: true });
    await lfs.rename(join(dir, "a.txt"), join(dir, "sub", "a.txt"));
    expect(await lfs.readFile(join(dir, "sub", "a.txt"), "utf8")).toBe("x");
    expect(await code(lfs.open(`${V}/a.txt`, "r"))).toBe("ENOENT");
  });
});

const hasPg = await pgAvailable();
describe.skipIf(!hasPg)("补字幕:目标在 Alist 媒体库上明确失败", () => {
  let h: Harness;
  let entityId: string;
  let locationId: string;
  beforeAll(async () => {
    h = await createHarness({ extraModules: [createSubtitlesModule()] });
    const root = await h.db
      .insertInto("library_root")
      .values({
        name: "Alist 剧集",
        media_kind: "mixed",
        local_path: V,
        management_mode: "managed",
        sentinel_file: null,
      })
      .returning("id")
      .executeTakeFirstOrThrow();
    entityId = (
      await h.db
        .insertInto("media_entity")
        .values({ kind: "series", title: "远端剧", year: 2024 } as never)
        .returning("id")
        .executeTakeFirstOrThrow()
    ).id;
    const a = await h.db
      .insertInto("media_asset")
      .values({ media_entity_id: entityId, kind: "video", status: "active" })
      .returning("id")
      .executeTakeFirstOrThrow();
    locationId = (
      await h.db
        .insertInto("asset_location")
        .values({
          media_asset_id: a.id,
          location_kind: "library",
          library_root_id: root.id,
          relative_path: "远端剧 (2024)/Season 1/远端剧 - S01E01.mkv",
          status: "available",
        })
        .returning("id")
        .executeTakeFirstOrThrow()
    ).id;
  }, 120_000);
  afterAll(async () => h?.close());

  it("写入返回失败原因,不写任何文件、不建资产", async () => {
    const res = await h.app.request("/api/v1/subtitles/apply", {
      method: "POST",
      headers: { authorization: `Bearer ${DEV_KEY}`, "content-type": "application/json" },
      body: JSON.stringify({
        entityId,
        items: [
          {
            name: "a.srt",
            ext: "srt",
            language: "zh-Hans",
            content: btoa("1\n00:00:01,000 --> 00:00:02,000\nhi\n"),
            targetLocationId: locationId,
          },
        ],
      }),
    });
    const body = await res.json();
    expect(res.status, JSON.stringify(body)).toBe(200);
    expect(body.data.written).toEqual([]);
    expect(body.data.failed).toEqual([{ name: "a.srt", reason: "目标视频在 Alist 存储上，暂不支持补字幕" }]);
    expect(existsSync("/@alist")).toBe(false);
    const subs = await h.db.selectFrom("media_asset").select("id").where("kind", "=", "subtitle").execute();
    expect(subs).toEqual([]);
  });
});