'use strict';

// Regression coverage for the relay callback boundary. The callback must
// return before model generation completes, while the queued job still owns
// the normal quality/delivery path.
const assert = require('assert/strict');
const fs = require('fs');
const os = require('os');
const path = require('path');

const { AgentWorkbenchDb } = require('../mcp/src/core/agent-workbench-db');
const { AgentWorkbenchService } = require('../mcp/src/core/agent-workbench-service');

const wait = ms => new Promise(resolve => setTimeout(resolve, ms));

async function waitFor(check, timeoutMs = 1000) {
  const deadline = Date.now() + timeoutMs;
  while (Date.now() < deadline) {
    if (check()) return;
    await wait(10);
  }
  assert.equal(check(), true, '后台生成在限定时间内未完成');
}

function createFixture(agent) {
  const dir = fs.mkdtempSync(path.join(os.tmpdir(), 'qiwei-callback-generation-'));
  const db = new AgentWorkbenchDb(path.join(dir, 'workbench.db'), {
    defaultMode: 'autopilot',
    autoSendConfidence: 0.8,
  });
  const sent = [];
  const service = new AgentWorkbenchService({
    db,
    agent,
    qiwei: {
      isConfigured: () => true,
      async sendText(toId, content) {
        sent.push({ toId, content });
        return { isSendSuccess: true, msgServerId: `callback-out-${sent.length}` };
      },
    },
    config: {
      accountKey: 'callback-generation-smoke',
      agent: { provider: 'fixture', model: 'fixture', apiKey: 'fixture', generationRetryAttempts: 1, generationRetryBaseMs: 0, qualityPassScore: 60 },
      qiwei: { allowedSenders: ['callback-contact'] },
      memory: { enabled: false },
    },
  });
  return { dir, db, service, sent };
}

function output() {
  return {
    content: '已收到，我先按当前信息整理下一步。',
    confidence: 0.96,
    intent: '信息确认',
    reason: '异步回调测试固定输出。',
    requiresHuman: false,
    profileUpdates: {},
    tasks: [],
    alerts: [],
    citations: [],
    toolTrace: [],
  };
}

async function main() {
  let release;
  const generationGate = new Promise(resolve => { release = resolve; });
  let calls = 0;
  const fixture = createFixture({
    modelClient: { isConfigured: () => true },
    async run() {
      calls += 1;
      await generationGate;
      return output();
    },
  });
  try {
    const startedAt = Date.now();
    const queued = await fixture.service.ingestInbound({
      externalId: 'callback-async-1',
      contactId: 'callback-contact',
      contactName: '回调异步测试',
      content: '请介绍一下服务',
    }, { awaitGeneration: false, allowAutoSend: true });
    assert.equal(queued.status, 'generation_queued');
    assert(Date.now() - startedAt < 300, '回调不应等待模型生成');
    assert.equal(fixture.sent.length, 0, '模型完成前不能发送');
    await waitFor(() => calls === 1);

    release();
    await waitFor(() => fixture.sent.length === 1);
    assert.equal(fixture.sent[0].toId, 'callback-contact');
    assert.equal(fixture.db.listAudit(100).some(item => item.action === 'autopilot_message_sent'), true);
  } finally {
    fixture.service.stopBackgroundWorkers();
    fixture.db.close();
    fs.rmSync(fixture.dir, { recursive: true, force: true });
  }

  const failed = createFixture({
    modelClient: { isConfigured: () => true },
    async run() { throw new Error('fixture generation contract error'); },
  });
  try {
    const queued = await failed.service.ingestInbound({
      externalId: 'callback-async-failure',
      contactId: 'callback-contact',
      contactName: '回调失败测试',
      content: '普通问题',
    }, { awaitGeneration: false, allowAutoSend: true });
    assert.equal(queued.status, 'generation_queued');
    await waitFor(() => failed.db.listAudit(100).some(item => item.action === 'agent_failed'));
    assert.equal(failed.sent.length, 0, '生成失败不得发送空消息');
  } finally {
    failed.service.stopBackgroundWorkers();
    failed.db.close();
    fs.rmSync(failed.dir, { recursive: true, force: true });
  }

  process.stdout.write(JSON.stringify({ status: 'passed', checks: [
    'relay callback returns generation_queued before model completion',
    'background generation preserves autopilot delivery',
    'background failure is audited without crashing the callback',
  ] }, null, 2) + '\n');
}

main().catch(error => {
  process.stderr.write(JSON.stringify({ status: 'failed', message: error.message, stack: error.stack }, null, 2) + '\n');
  process.exitCode = 1;
});