'use strict';

// Regression coverage for the private autopilot path when model generation is
// unavailable. The fixture intentionally exercises AgentWorkbenchService via
// ingestInbound so delivery gates, stale-message checks, and audit writes are
// covered together.
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 results = [];

function fixture() {
  const dir = fs.mkdtempSync(path.join(os.tmpdir(), 'qiwei-autoreply-fallback-'));
  const db = new AgentWorkbenchDb(path.join(dir, 'workbench.db'), {
    defaultMode: 'autopilot',
    autoSendConfidence: 0.88,
  });
  const sent = [];
  let sendRun = async (toId, content) => ({ isSendSuccess: true, msgServerId: `fixture-out-${sent.length + 1}` });
  let modelCalls = 0;
  let modelRun = async () => {
    modelCalls += 1;
    const error = new Error('Claude Code 本次运行超时，请稍后重试');
    error.code = 'timeout';
    throw error;
  };
  const service = new AgentWorkbenchService({
    db,
    agent: {
      modelClient: { isConfigured: () => true },
      async run(input) {
        return modelRun(input);
      },
    },
    qiwei: {
      isConfigured: () => true,
      async sendText(toId, content) {
        sent.push({ toId, content });
        return sendRun(toId, content);
      },
    },
    config: {
      accountKey: 'autoreply-fallback-smoke',
      agent: {
        provider: 'fixture',
        model: 'fixture',
        apiKey: 'fixture',
        // Keep this smoke test fast while still exercising retryable errors.
        generationRetryAttempts: 1,
        generationRetryBaseMs: 0,
        qualityPassScore: 60,
      },
      qiwei: { allowedSenders: ['contact-fallback'] },
      memory: { enabled: false },
    },
  });
  return {
    dir,
    db,
    service,
    sent,
    get modelCalls() { return modelCalls; },
    setModelRun(fn) { modelRun = fn; },
    setSendRun(fn) { sendRun = fn; },
    close() {
      service.stopBackgroundWorkers();
      db.close();
      fs.rmSync(dir, { recursive: true, force: true });
    },
  };
}

function auditActions(ctx, conversationId) {
  return ctx.db.listAudit(200, conversationId).map(item => item.action);
}

function hasFallbackAudit(actions) {
  return actions.some(action => /generation_fallback/.test(String(action)));
}

async function check(name, fn) {
  await fn();
  results.push({ name, status: 'passed' });
}

async function testTimeoutUsesConservativeAutopilotFallback() {
  const ctx = fixture();
  try {
    const result = await ctx.service.ingestInbound({
      externalId: 'fallback-timeout-1',
      contactId: 'contact-fallback',
      contactName: '超时兜底测试',
      content: '我想了解一下你们的服务',
    });
    assert.equal(result.status, 'autopilot_sent');
    assert.equal(ctx.modelCalls, 1, '模型应先尝试一次，超时后再走兜底');
    assert.equal(ctx.sent.length, 1, '普通私聊兜底只允许发送一次');
    assert.match(ctx.sent[0].content, /您好|收到/);
    assert(ctx.sent[0].content.length >= 8, '兜底回复应为完整的保守确认，而非空消息');
    const actions = auditActions(ctx, result.conversation.id);
    assert.equal(hasFallbackAudit(actions), true, `缺少 generation_fallback 审计：${actions.join(',')}`);
    assert.equal(dbOutboundCount(ctx, result.conversation.id), 1);
  } finally {
    ctx.close();
  }
}

async function testRiskTimeoutNeverAutoSends() {
  const ctx = fixture();
  try {
    const result = await ctx.service.ingestInbound({
      externalId: 'fallback-risk-1',
      contactId: 'contact-fallback',
      contactName: '风险兜底测试',
      content: '最低报价能确认吗？',
    });
    assert(['pending_review', 'agent_failed'].includes(result.status), `风险超时应停留审核或错误态，实际：${result.status}`);
    assert.equal(ctx.sent.length, 0, '风险消息即使触发兜底也不能自动发送');
    assert.equal(dbOutboundCount(ctx, result.conversation.id), 0);
    if (result.status === 'pending_review') {
      assert.equal(result.draft.requires_human, true, '风险兜底草稿必须标记人工处理');
    }
    const actions = auditActions(ctx, result.conversation.id);
    assert.equal(actions.some(action => /agent_failed|draft_created|generation_fallback/.test(String(action))), true);
  } finally {
    ctx.close();
  }
}

async function testGreetingBypassesModelAndRepliesImmediately() {
  const ctx = fixture();
  try {
    ctx.setModelRun(async () => {
      throw new Error('纯问候不得调用模型');
    });
    const result = await ctx.service.ingestInbound({
      externalId: 'fallback-greeting-1',
      contactId: 'contact-fallback',
      contactName: '问候测试',
      content: '你好',
    });
    assert.equal(result.status, 'autopilot_sent');
    assert.equal(ctx.modelCalls, 0, '纯问候应走确定性快速路径，不调用 Claude');
    assert.equal(ctx.sent.length, 1);
    assert.match(ctx.sent[0].content, /您好|请问|收到/);
    assert.equal(dbOutboundCount(ctx, result.conversation.id), 1);
    const actions = auditActions(ctx, result.conversation.id);
    assert.equal(actions.some(action => /greeting|deterministic|generation_fallback/.test(String(action))), true,
      `缺少问候快速路径审计：${actions.join(',')}`);
  } finally {
    ctx.close();
  }
}

async function testSendFailureRetriesBeforeRecordingSent() {
  const ctx = fixture();
  try {
    let attempts = 0;
    ctx.setSendRun(async () => {
      attempts += 1;
      if (attempts === 1) return { isSendSuccess: false, msg: 'temporary gateway failure' };
      return { isSendSuccess: true, msgServerId: 'fixture-out-retry-success' };
    });
    ctx.service.config.qiwei.sendRetryAttempts = 2;
    ctx.service.config.qiwei.sendRetryBaseMs = 0;
    const result = await ctx.service.ingestInbound({
      externalId: 'fallback-send-retry-1',
      contactId: 'contact-fallback',
      contactName: '发送重试测试',
      content: '请介绍一下服务',
    });
    assert.equal(result.status, 'autopilot_sent');
    assert.equal(attempts, 2, '上游否定确认后应重试一次');
    assert.equal(ctx.sent.length, 2);
    assert.equal(dbOutboundCount(ctx, result.conversation.id), 1, '只有最终确认成功才写入出站记录');
    const actions = auditActions(ctx, result.conversation.id);
    assert(actions.includes('autopilot_send_retry_scheduled'));
    assert(actions.includes('autopilot_message_sent'));
  } finally {
    ctx.close();
  }
}

async function testSendFailureDoesNotCreateSentRecord() {
  const ctx = fixture();
  try {
    ctx.setSendRun(async () => ({ isSendSuccess: false, msg: 'capacity temporarily unavailable' }));
    ctx.service.config.qiwei.sendRetryAttempts = 2;
    ctx.service.config.qiwei.sendRetryBaseMs = 0;
    const result = await ctx.service.ingestInbound({
      externalId: 'fallback-send-fail-1',
      contactId: 'contact-fallback',
      contactName: '发送失败测试',
      content: '请介绍一下服务',
    });
    assert.equal(result.status, 'autopilot_send_failed');
    assert.equal(ctx.sent.length, 2);
    assert.equal(dbOutboundCount(ctx, result.conversation.id), 0, '发送未确认时不得伪造 sent 记录');
    const claim = ctx.db.db.prepare('SELECT status FROM outbound_delivery_claims WHERE conversation_id=? AND inbound_message_id=?')
      .get(result.conversation.id, result.message.id);
    assert.equal(claim.status, 'failed');
  } finally {
    ctx.close();
  }
}

function dbOutboundCount(ctx, conversationId) {
  return ctx.db.listMessages(conversationId, 100).filter(item => item.direction === 'outbound').length;
}

async function main() {
  await check('模型超时后普通私聊发送保守兜底', testTimeoutUsesConservativeAutopilotFallback);
  await check('风险消息超时后保持人工审核且不出站', testRiskTimeoutNeverAutoSends);
  await check('纯问候不调用模型并立即自动回复', testGreetingBypassesModelAndRepliesImmediately);
  await check('上游否定确认后重试并只记录一次成功出站', testSendFailureRetriesBeforeRecordingSent);
  await check('连续发送失败不生成伪造 sent 记录', testSendFailureDoesNotCreateSentRecord);
  process.stdout.write(`${JSON.stringify({ status: 'passed', results }, 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;
});