import test from "node:test";
import assert from "node:assert/strict";
import os from "node:os";
import path from "node:path";
import { mkdtemp, rm } from "node:fs/promises";
import { NextRequest } from "next/server";

let runtimeRoot = "";
let POST: (typeof import("../src/app/api/v1/projects/[projectId]/messages/route"))["POST"];
let saveAiAccount: (typeof import("../src/lib/boss-data"))["saveAiAccount"];
let updateProjectAgentControls: (typeof import("../src/lib/boss-data"))["updateProjectAgentControls"];
let readState: (typeof import("../src/lib/boss-data"))["readState"];
let createAuthSession: (typeof import("../src/lib/boss-data"))["createAuthSession"];
let AUTH_SESSION_COOKIE = "";

async function setup() {
  if (runtimeRoot) {
    return;
  }

  runtimeRoot = await mkdtemp(path.join(os.tmpdir(), "boss-master-agent-message-queue-"));
  process.env.BOSS_RUNTIME_ROOT = runtimeRoot;
  process.env.BOSS_STATE_FILE = path.join(runtimeRoot, "boss-state.json");

  const [messageRoute, data, auth] = await Promise.all([
    import("../src/app/api/v1/projects/[projectId]/messages/route.ts"),
    import("../src/lib/boss-data.ts"),
    import("../src/lib/boss-auth.ts"),
  ]);

  POST = messageRoute.POST;
  saveAiAccount = data.saveAiAccount;
  updateProjectAgentControls = data.updateProjectAgentControls;
  readState = data.readState;
  createAuthSession = data.createAuthSession;
  AUTH_SESSION_COOKIE = auth.AUTH_SESSION_COOKIE;
}

async function createAuthedRequest(projectId: string, body: unknown) {
  const session = await createAuthSession({
    account: "17600003315",
    role: "highest_admin",
    displayName: "Boss 超级管理员",
    loginMethod: "password",
  });

  return new NextRequest(`http://127.0.0.1:3000/api/v1/projects/${projectId}/messages`, {
    method: "POST",
    headers: {
      "content-type": "application/json",
      cookie: `${AUTH_SESSION_COOKIE}=${session.sessionToken}`,
    },
    body: JSON.stringify(body),
  });
}

async function waitFor(predicate: () => Promise<boolean>, timeoutMs = 5_000) {
  const startedAt = Date.now();
  while (Date.now() - startedAt < timeoutMs) {
    if (await predicate()) {
      return;
    }
    await new Promise((resolve) => setTimeout(resolve, 50));
  }
  throw new Error("waitFor timed out");
}

test.after(async () => {
  if (runtimeRoot) {
    await rm(runtimeRoot, { recursive: true, force: true });
  }
});

test("POST /api/v1/projects/master-agent/messages 快速返回队列态并在异步实际回复时继承当前会话覆盖", async () => {
  await setup();

  await saveAiAccount({
    accountId: "openai-master-agent-queue",
    label: "API 容灾",
    role: "api_fallback",
    provider: "openai_api",
    displayName: "OpenAI API 队列测试",
    model: "gpt-5.4",
    apiKey: "sk-test-openai-queue",
    enabled: true,
    setActive: true,
    loginStatusNote: "用于 master-agent 队列测试。",
  });

  await updateProjectAgentControls("master-agent", {
    modelOverride: "gpt-4.1-mini",
    reasoningEffortOverride: "high",
  });

  const fetchCalls: Array<{ url: string; body: unknown }> = [];
  const originalFetch = globalThis.fetch;
  globalThis.fetch = (async (input, init) => {
    const body = typeof init?.body === "string" ? JSON.parse(init.body) : init?.body ?? null;
    fetchCalls.push({ url: String(input), body });
    return new Response(JSON.stringify({ output_text: "已切到异步队列回复。" }), {
      status: 200,
      headers: {
        "content-type": "application/json",
        "x-request-id": "req-master-agent-queue",
      },
    });
  }) as typeof fetch;

  try {
    const response = await POST(
      await createAuthedRequest("master-agent", {
        body: "请同步 master-agent 当前阻塞点",
      }),
      { params: Promise.resolve({ projectId: "master-agent" }) },
    );

    assert.equal(response.status, 200);

    const payload = (await response.json()) as {
      ok: boolean;
      task?: { taskId: string; taskType: string; status: string } | null;
      masterReplyState?: "queued" | "running" | "completed";
      masterReply?: unknown;
    };

    assert.equal(payload.ok, true);
    assert.equal(payload.masterReplyState, "queued");
    assert.ok(payload.task, "expected master-agent message to return a task envelope");
    assert.equal(payload.task?.taskType, "conversation_reply");
    assert.equal(payload.task?.status, "queued");
    assert.ok(payload.task?.taskId, "expected a stable taskId in the response");

    await waitFor(async () => {
      const state = await readState();
      const task = state.masterAgentTasks.find((item) => item.taskId === payload.task?.taskId);
      return task?.status === "completed";
    });

    const nextState = await readState();
    const task = nextState.masterAgentTasks.find((item) => item.taskId === payload.task?.taskId);
    assert.ok(task, "expected the queued task to remain in state");
    assert.equal(task?.status, "completed");
    assert.equal(task?.replyBody, "已切到异步队列回复。");

    const masterProject = nextState.projects.find((project) => project.id === "master-agent");
    const mirroredReply = masterProject?.messages.at(-1);
    assert.ok(mirroredReply, "expected the async reply to be written back to the master-agent ledger");
    assert.match(mirroredReply?.body ?? "", /已切到异步队列回复/);

    assert.equal(fetchCalls.length, 1);
    assert.equal(fetchCalls[0]?.url, "https://api.openai.com/v1/responses");
    const requestBody = fetchCalls[0]?.body as {
      model?: string;
      reasoning?: { effort?: string };
    };
    assert.equal(requestBody?.model, "gpt-4.1-mini");
    assert.equal(requestBody?.reasoning?.effort, "high");
  } finally {
    globalThis.fetch = originalFetch;
  }
});

test("master-agent enqueue 在主节点离线时会自动切到 OpenAI 后台队列而不是挂到本机设备队列", async () => {
  await setup();

  await saveAiAccount({
    accountId: "master-codex-primary-offline",
    label: "主 GPT",
    role: "primary",
    provider: "master_codex_node",
    displayName: "离线 Master Codex Node",
    nodeId: "offline-node",
    nodeLabel: "离线节点",
    model: "gpt-5.4",
    enabled: true,
    setActive: true,
    loginStatusNote: "离线主节点",
  });

  await saveAiAccount({
    accountId: "openai-backup-queue",
    label: "备用 GPT",
    role: "backup",
    provider: "openai_api",
    displayName: "OpenAI 备用账号",
    accountIdentifier: "sk-queue-demo",
    model: "gpt-5.4",
    apiKey: "sk-queue-demo",
    enabled: true,
    setActive: false,
    loginStatusNote: "备用 API 账号",
  });

  const originalFetch = globalThis.fetch;
  globalThis.fetch = (async () =>
    new Response(JSON.stringify({ output_text: "离线主节点已切到 API 后台队列。" }), {
      status: 200,
      headers: {
        "content-type": "application/json",
        "x-request-id": "req-master-agent-offline-fallback-queue",
      },
    })) as typeof fetch;

  try {
    const response = await POST(
      await createAuthedRequest("master-agent", {
        body: "请走备用 API 队列",
      }),
      { params: Promise.resolve({ projectId: "master-agent" }) },
    );

    assert.equal(response.status, 200);
    const payload = (await response.json()) as {
      ok: boolean;
      task?: { taskId: string; taskType: string; status: string } | null;
      masterReplyState?: "queued" | "running" | "completed";
    };
    assert.equal(payload.ok, true);
    assert.equal(payload.masterReplyState, "queued");
    assert.equal(payload.task?.taskType, "conversation_reply");

    await waitFor(async () => {
      const state = await readState();
      const task = state.masterAgentTasks.find((item) => item.taskId === payload.task?.taskId);
      return task?.status === "completed";
    });

    const nextState = await readState();
    const task = nextState.masterAgentTasks.find((item) => item.taskId === payload.task?.taskId);
    assert.equal(task?.deviceId, "master-agent-openai");
    assert.equal(task?.status, "completed");
    assert.equal(task?.accountId, "openai-backup-queue");
  } finally {
    globalThis.fetch = originalFetch;
  }
});