const http = require('http');
const app = require('./final-backend');

let server;
let testPurchaseRequestId;

// 简单的HTTP请求函数
function request(options, data = null) {
  return new Promise((resolve, reject) => {
    const req = http.request(options, (res) => {
      let body = '';
      res.on('data', (chunk) => {
        body += chunk;
      });
      res.on('end', () => {
        try {
          const parsed = JSON.parse(body);
          resolve({ status: res.statusCode, body: parsed });
        } catch (e) {
          resolve({ status: res.statusCode, body: body });
        }
      });
    });
    
    req.on('error', (e) => {
      reject(e);
    });
    
    if (data) {
      req.write(JSON.stringify(data));
    }
    
    req.end();
  });
}

// 测试采购流程
async function testPurchaseFlow() {
  console.log('=== 测试采购流程 ===');
  
  // 1. 创建采购申请
  console.log('1. 创建采购申请...');
  const createResponse = await request({
    hostname: 'localhost',
    port: 3005,
    path: '/api/purchase-requests',
    method: 'POST',
    headers: {
      'Content-Type': 'application/json'
    }
  }, {
    project_id: 3,
    applicant: '测试申请人',
    request_date: '2026-03-25',
    expense_category: 'material',
    total_amount: 15000,
    items: [
      {
        product_name: '测试商品A',
        quantity: 10,
        unit_price: 1000,
        total_price: 10000
      },
      {
        product_name: '测试商品B',
        quantity: 5,
        unit_price: 1000,
        total_price: 5000
      }
    ]
  });
  
  console.log('创建采购申请响应:', createResponse.status, createResponse.body);
  if (createResponse.status === 200 && createResponse.body.success) {
    testPurchaseRequestId = createResponse.body.data.id;
    console.log('采购申请ID:', testPurchaseRequestId);
  } else {
    console.error('创建采购申请失败');
    return false;
  }
  
  // 2. 获取采购申请列表
  console.log('\n2. 获取采购申请列表...');
  const listResponse = await request({
    hostname: 'localhost',
    port: 3005,
    path: '/api/purchase-requests',
    method: 'GET'
  });
  console.log('获取采购申请列表响应:', listResponse.status, listResponse.body);
  if (listResponse.status !== 200 || !listResponse.body.success) {
    console.error('获取采购申请列表失败');
    return false;
  }
  
  // 3. 获取采购申请详情
  console.log('\n3. 获取采购申请详情...');
  const detailResponse = await request({
    hostname: 'localhost',
    port: 3005,
    path: `/api/purchase-requests/${testPurchaseRequestId}`,
    method: 'GET'
  });
  console.log('获取采购申请详情响应:', detailResponse.status, detailResponse.body);
  if (detailResponse.status !== 200 || !detailResponse.body.success) {
    console.error('获取采购申请详情失败');
    return false;
  }
  
  // 4. 提交采购申请
  console.log('\n4. 提交采购申请...');
  const submitResponse = await request({
    hostname: 'localhost',
    port: 3005,
    path: `/api/purchase-requests/${testPurchaseRequestId}/submit`,
    method: 'POST'
  });
  console.log('提交采购申请响应:', submitResponse.status, submitResponse.body);
  if (submitResponse.status !== 200 || !submitResponse.body.success) {
    console.error('提交采购申请失败');
    return false;
  }
  
  // 5. 审批采购申请
  console.log('\n5. 审批采购申请...');
  const approveResponse = await request({
    hostname: 'localhost',
    port: 3005,
    path: `/api/purchase-requests/${testPurchaseRequestId}/approve`,
    method: 'POST'
  });
  console.log('审批采购申请响应:', approveResponse.status, approveResponse.body);
  if (approveResponse.status !== 200 || !approveResponse.body.success) {
    console.error('审批采购申请失败');
    return false;
  }
  
  return true;
}

// 测试库存管理流程
async function testInventoryFlow() {
  console.log('\n=== 测试库存管理流程 ===');
  
  // 1. 获取库存记录
  console.log('1. 获取库存记录...');
  const recordsResponse = await request({
    hostname: 'localhost',
    port: 3005,
    path: '/api/inventory',
    method: 'GET'
  });
  console.log('获取库存记录响应:', recordsResponse.status, recordsResponse.body);
  if (recordsResponse.status !== 200 || !recordsResponse.body.success) {
    console.error('获取库存记录失败');
    return false;
  }
  
  // 2. 获取库存汇总
  console.log('\n2. 获取库存汇总...');
  const summaryResponse = await request({
    hostname: 'localhost',
    port: 3005,
    path: '/api/inventory/summary',
    method: 'GET'
  });
  console.log('获取库存汇总响应:', summaryResponse.status, summaryResponse.body);
  if (summaryResponse.status !== 200 || !summaryResponse.body.success) {
    console.error('获取库存汇总失败');
    return false;
  }
  
  // 3. 创建出库记录
  console.log('3. 创建出库记录...');
  const outResponse = await request({
    hostname: 'localhost',
    port: 3005,
    path: '/api/inventory/out',
    method: 'POST',
    headers: {
      'Content-Type': 'application/json'
    }
  }, {
    project_id: 3,
    product_id: 1,
    quantity: 10,
    operator: '测试操作员'
  });
  console.log('创建出库记录响应:', outResponse.status, outResponse.body);
  if (outResponse.status !== 200 || !outResponse.body.success) {
    console.error('创建出库记录失败');
    return false;
  }
  
  return true;
}

// 测试成本统计功能
async function testCostStatistics() {
  console.log('\n=== 测试成本统计功能 ===');
  
  // 获取项目成本统计
  console.log('1. 获取项目成本统计...');
  const costResponse = await request({
    hostname: 'localhost',
    port: 3005,
    path: '/api/projects/3/cost-summary',
    method: 'GET'
  });
  console.log('获取项目成本统计响应:', costResponse.status, costResponse.body);
  if (costResponse.status !== 200 || !costResponse.body.success) {
    console.error('获取项目成本统计失败');
    return false;
  }
  
  // 验证成本统计数据结构
  const costData = costResponse.body.data;
  if (!costData.project_name || !costData.purchase_cost || costData.payment_cost === undefined || costData.total_cost === undefined || costData.profit === undefined) {
    console.error('成本统计数据结构不完整');
    return false;
  }
  
  console.log('成本统计数据验证通过:', {
    project_name: costData.project_name,
    purchase_cost: costData.purchase_cost,
    payment_cost: costData.payment_cost,
    total_cost: costData.total_cost,
    profit: costData.profit
  });
  
  return true;
}

// 主测试函数
async function runTests() {
  try {
    // 启动服务器
    server = app.listen(3005, () => {
      console.log('测试服务器启动在端口3005');
    });
    
    // 等待服务器启动
    await new Promise(resolve => setTimeout(resolve, 1000));
    
    // 运行测试
    const purchaseResult = await testPurchaseFlow();
    const inventoryResult = await testInventoryFlow();
    const costResult = await testCostStatistics();
    
    // 输出测试结果
    console.log('\n=== 测试结果 ===');
    console.log('采购流程测试:', purchaseResult ? '通过' : '失败');
    console.log('库存管理流程测试:', inventoryResult ? '通过' : '失败');
    console.log('成本统计功能测试:', costResult ? '通过' : '失败');
    
    if (purchaseResult && inventoryResult && costResult) {
      console.log('\n🎉 所有测试通过！');
    } else {
      console.log('\n❌ 部分测试失败！');
    }
    
  } catch (error) {
    console.error('测试过程中发生错误:', error);
  } finally {
    // 关闭服务器
    if (server) {
      server.close();
      console.log('测试服务器已关闭');
    }
  }
}

// 运行测试
runTests();