import { appendFile, mkdir, writeFile } from "node:fs/promises";
import { join } from "node:path";
import { afterAll, beforeAll, describe, expect, it } from "vitest";
import { createFmHarness, type FmHarness, key, pgAvailable, READ_KEY, seedAsset, seedEntity } from "./harness.ts";

// identify(只读,本地 + 远端召回前 5,不落库)、organize(按作品分组走 planImport,dryRun→execute 一致与源变更)、
// probe(已登记写回 media_info)、scrape(仅已登记作品,入队 refreshMetadata;NFO 待 W5)。

const skip = !(await pgAvailable());

describe.skipIf(skip)("files 识别 / 整理 / 探测 / 刮削", () => {
  let h: FmHarness;
  let show: string;
  let film: string;
  beforeAll(async () => {
    h = await createFmHarness(
      "ident",
      {
        ao: {
          probe: async () => ({
            status: "ok",
            container: "matroska",
            durationSec: 60,
            video: [{ codec: "hevc", width: 3840, height: 2160, hdr: "HDR10" }],
            audio: [{ codec: "truehd" }],
            subtitles: [],
          }),
        },
      },
      { catalog: true },
    );
    show = await seedEntity(h.db, { kind: "series", title: "Some Show", year: 2022 });
    film = await seedEntity(h.db, { kind: "movie", title: "Blue Film", year: 2021 });
    await mkdir(join(h.dl, "Some.Show.S01.1080p.WEB-DL"));
    await writeFile(join(h.dl, "Some.Show.S01.1080p.WEB-DL", "Some.Show.S01E02.1080p.WEB-DL-GRP.mkv"), "ep2");
    await writeFile(join(h.dl, "Some.Show.S01.1080p.WEB-DL", "Some.Show.S01E03.1080p.WEB-DL-GRP.mkv"), "ep3");
    await writeFile(join(h.dl, "Blue.Film.2021.2160p.BluRay.x265-GRP.mkv"), "film-bytes");
    await writeFile(join(h.dl, "Remote.Film.2019.1080p.mkv"), "remote");
  });
  afterAll(async () => h?.close());

  it("identify:目录展开为视频,本地候选命中,季集解析,不写库", async () => {
    const before = await h.db.selectFrom("media_entity").select(["id"]).execute();
    const r = await h.api(
      "POST",
      "/files/identify",
      { items: [{ root: h.dlRoot, path: "Some.Show.S01.1080p.WEB-DL" }] },
      READ_KEY,
    );
    expect(r.status).toBe(200);
    expect(r.body.data.items).toHaveLength(2);
    const it0 = r.body.data.items[0];
    expect(it0.parsed).toMatchObject({ season: 1, episodes: [2], resolution: "1080p" });
    expect(it0.candidates[0]).toMatchObject({ mediaEntityId: show, provider: "local", title: "Some Show" });
    expect(it0.candidates.length).toBeLessThanOrEqual(5);
    expect(it0.suggestion).toMatchObject({ mediaEntityId: show, contentUnit: "S01E02" });
    const after = await h.db.selectFrom("media_entity").select(["id"]).execute();
    expect(after).toHaveLength(before.length);
    const pool = await h.db.selectFrom("identity_candidate").select(["id"]).execute();
    expect(pool).toHaveLength(0);
  });

  it("identify:远端候选(catalog.lookup)", async () => {
    const r = await h.api("POST", "/files/identify", {
      items: [{ root: h.dlRoot, path: "Remote.Film.2019.1080p.mkv" }],
    });
    expect(r.status).toBe(200);
    const c = r.body.data.items[0].candidates;
    expect(c[0]).toMatchObject({ provider: "tmdb", externalId: "999", mediaEntityId: null, kind: "movie" });
  });

  it("organize:dryRun 返回 planId 与前后路径;源变更 → 该组 plan_stale;重新预览后执行入队 verifyAndImport", async () => {
    const items = [{ root: h.dlRoot, path: "Blue.Film.2021.2160p.BluRay.x265-GRP.mkv", mediaEntityId: film }];
    const dry = await h.api("POST", "/files/organize", { idempotencyKey: key(), items, action: "copy", dryRun: true });
    expect(dry.status).toBe(200);
    const g = dry.body.data.groups[0];
    expect(g.error).toBeNull();
    expect(g.planId).toBeTruthy();
    expect(g.files[0].source).toBe(join(h.dl, "Blue.Film.2021.2160p.BluRay.x265-GRP.mkv"));
    expect(g.files[0].target).toContain(join(h.lib, "Blue Film (2021)"));

    await appendFile(join(h.dl, "Blue.Film.2021.2160p.BluRay.x265-GRP.mkv"), "+");
    const stale = await h.api("POST", "/files/organize", {
      idempotencyKey: key(),
      items,
      action: "copy",
      dryRun: false,
      planIds: [g.planId],
    });
    expect(stale.status).toBe(200);
    expect(stale.body.data.groups[0].error.code).toBe("plan_stale");
    expect(stale.body.data.recordIds).toEqual([]);

    const dry2 = await h.api("POST", "/files/organize", { idempotencyKey: key(), items, action: "copy", dryRun: true });
    const exec = await h.api("POST", "/files/organize", {
      idempotencyKey: key(),
      items,
      action: "copy",
      dryRun: false,
      planIds: [dry2.body.data.groups[0].planId],
    });
    expect(exec.status).toBe(200);
    expect(exec.body.data.groups[0].error).toBeNull();
    expect(exec.body.data.recordIds).toHaveLength(1);
    expect(exec.body.data.groups[0].files.map((f: { target: string }) => f.target)).toEqual(
      dry2.body.data.groups[0].files.map((f: { target: string }) => f.target),
    );
    expect(h.engine.enqueued.some((e) => e.task === "verifyAndImport")).toBe(true);
    const rec = await h.db
      .selectFrom("organization_record")
      .select(["trigger", "action", "media_entity_id"])
      .where("id", "=", exec.body.data.recordIds[0])
      .executeTakeFirstOrThrow();
    expect(rec).toEqual({ trigger: "manual", action: "copy", media_entity_id: film });
  });

  it("organize:路径逃逸同样拒绝", async () => {
    const r = await h.api("POST", "/files/organize", {
      idempotencyKey: key(),
      items: [{ root: h.dlRoot, path: "../outside/secret.txt", mediaEntityId: film }],
      action: "copy",
      dryRun: true,
    });
    expect(r.status).toBeGreaterThanOrEqual(400);
    expect(r.status).toBeLessThan(500);
  });

  it("probe:已登记资产写回 media_info;scrape 仅已登记作品", async () => {
    await mkdir(join(h.lib, "Blue Film probe"));
    await writeFile(join(h.lib, "Blue Film probe", "Blue.Film.2021.mkv"), "x");
    const a = await seedAsset(h.db, h, { entityId: film, rel: "Blue Film probe/Blue.Film.2021.mkv" });
    const r = await h.api("POST", "/files/probe", {
      items: [{ root: h.libRoot, path: "Blue Film probe/Blue.Film.2021.mkv" }],
    });
    expect(r.status).toBe(200);
    expect(r.body.data.items[0]).toMatchObject({
      status: "ok",
      savedToAsset: true,
      summary: { resolution: "3840x2160", hdr: "HDR10", videoCodec: "hevc", audioTracks: 1 },
    });
    const row = await h.db
      .selectFrom("media_asset")
      .select(["media_info"])
      .where("id", "=", a.assetId)
      .executeTakeFirstOrThrow();
    expect((row.media_info as { probe?: { status: string } }).probe?.status).toBe("ok");
    // 未登记:只缓存
    const u = await h.api("POST", "/files/probe", { items: [{ root: h.dlRoot, path: "Remote.Film.2019.1080p.mkv" }] });
    expect(u.body.data.items[0]).toMatchObject({ status: "ok", savedToAsset: false, cached: false });
    const u2 = await h.api("POST", "/files/probe", { items: [{ root: h.dlRoot, path: "Remote.Film.2019.1080p.mkv" }] });
    expect(u2.body.data.items[0].cached).toBe(true);

    const s = await h.api("POST", "/files/scrape", { idempotencyKey: key(), mediaEntityId: film, writeNfo: true });
    expect(s.status).toBe(200);
    expect(s.body.data).toMatchObject({ mediaEntityId: film, nfo: "not_implemented", images: "not_requested" });
    expect(h.engine.enqueued.some((e) => e.task === "refreshMetadata")).toBe(true);
    const none = await h.api("POST", "/files/scrape", { idempotencyKey: key(), mediaEntityId: show });
    expect(none.status).toBe(400);
  });
});