import { createHash } from "node:crypto";
import { createQbClient } from "@umt/adapters";
import type { FakeScript } from "@umt/agent";
import { makeTorrent } from "@umt/testkit";
import { createAcquisitionOrganizeModule } from "../../../src/modules/acquisition-organize/index.ts";
import { createAgentModule } from "../../../src/modules/agent/index.ts";
import { authSettingsModule } from "../../../src/modules/auth-settings/index.ts";
import { createSchedulesModule } from "../../../src/modules/schedules/index.ts";
import { createSourcesIdentityModule } from "../../../src/modules/sources-identity/index.ts";
import type { ServerModule } from "../../../src/modules/types.ts";

// e2e 模块装配:真实四个模块,外部依赖指向 testkit mock(qB 账号 admin/adminadmin、固定磁盘用量、按标题生成的种子)。
// harness(API/worker 同进程)与崩溃恢复用的 worker 子进程共用这一份,保证两边行为一致。

export const TORRENT_SIZE = 300_000;

/** 按发布标题确定性地生成种子(同标题 → 同 infohash,父子进程一致) */
export function torrentFor(title: string) {
  const seed = createHash("sha256").update(title).digest().readUInt32BE(0);
  return makeTorrent({ name: `${title}.mkv`, length: TORRENT_SIZE, pieceSeed: seed });
}

export interface E2EModuleOptions {
  sessionDir: string;
  fakeScripts?: FakeScript[];
  /** 下载同步周期(毫秒) */
  syncIntervalMs?: number;
}

export function buildModules(o: E2EModuleOptions): ServerModule[] {
  return [
    authSettingsModule,
    // TMDB 不注入:走设置 metadata.tmdbApiKeySecretRef / tmdbBaseUrl(W2 收口 b)
    createSourcesIdentityModule({ schedulerIntervalMs: 3_600_000 }),
    createAcquisitionOrganizeModule({
      downloader: async (inst) =>
        createQbClient({
          instanceId: inst.id,
          baseUrl: inst.base_url,
          username: "admin",
          password: "adminadmin",
          lookup: { attempts: 5, intervalMs: 50 },
        }),
      torrentSource: async ({ release }) => ({ kind: "file", bytes: torrentFor(release.title).bytes }),
      diskUsage: async (path) => ({
        status: "ok",
        path,
        totalBytes: 1e12,
        freeBytes: 6e11,
        availableBytes: 6e11,
        usedBytes: 4e11,
        usedRatio: 0.4,
      }),
      probe: async () => ({ status: "unknown", reason: "ffprobe_unavailable" }),
      options: {
        backgroundLoops: true,
        syncIntervalMs: o.syncIntervalMs ?? 300,
        minVideoBytes: 100_000,
        verifyHash: "sha256",
        reconcileIntervalMs: 0,
      },
    }),
    createAgentModule({
      sessionDir: o.sessionDir,
      ...(o.fakeScripts ? { fakeScripts: o.fakeScripts } : {}),
      goalPollSec: 1,
    }),
    // 定时任务调度器(驱动上面模块登记的周期任务;须在末尾)
    createSchedulesModule({ builtinChecks: false, scheduler: { tickMs: 100, lockRetryMs: 200 } }),
  ];
}