const axios = require('axios');

const BASE_URL = 'http://localhost:3000/api';

console.log('Testing Error Handling & Logging\n');
console.log('='.repeat(50));

async function testErrorHandling() {
  const tests = [
    {
      name: '404 Not Found',
      test: async () => {
        try {
          await axios.get(`${BASE_URL}/nonexistent-route`);
          return { success: false, message: 'Should have thrown 404' };
        } catch (error) {
          if (error.response?.status === 404) {
            return { 
              success: true, 
              message: `✓ 404 handled correctly: ${error.response.data.message}` 
            };
          }
          return { success: false, message: `✗ Unexpected error: ${error.message}` };
        }
      }
    },
    {
      name: '401 Unauthorized (No Token)',
      test: async () => {
        try {
          await axios.get(`${BASE_URL}/auth/verify`);
          return { success: false, message: 'Should have thrown 401' };
        } catch (error) {
          if (error.response?.status === 401) {
            return { 
              success: true, 
              message: `✓ 401 handled correctly: ${error.response.data.message}` 
            };
          }
          return { success: false, message: `✗ Unexpected error: ${error.message}` };
        }
      }
    },
    {
      name: '401 Unauthorized (Invalid Token)',
      test: async () => {
        try {
          await axios.get(`${BASE_URL}/auth/verify`, {
            headers: { 'Authorization': 'Bearer invalid-token' }
          });
          return { success: false, message: 'Should have thrown 401' };
        } catch (error) {
          if (error.response?.status === 401) {
            return { 
              success: true, 
              message: `✓ 401 handled correctly: ${error.response.data.message}` 
            };
          }
          return { success: false, message: `✗ Unexpected error: ${error.message}` };
        }
      }
    },
    {
      name: '400 Bad Request (Missing Required Fields)',
      test: async () => {
        try {
          await axios.post(`${BASE_URL}/auth/register`, {
            username: 'test'
            // missing email and password
          });
          return { success: false, message: 'Should have thrown 400' };
        } catch (error) {
          if (error.response?.status === 400) {
            return { 
              success: true, 
              message: `✓ 400 handled correctly: ${error.response.data.message}` 
            };
          }
          return { success: false, message: `✗ Unexpected error: ${error.message}` };
        }
      }
    },
    {
      name: '400 Bad Request (Invalid Email)',
      test: async () => {
        try {
          await axios.post(`${BASE_URL}/auth/register`, {
            username: 'testuser123',
            email: 'invalid-email',
            password: 'password123'
          });
          return { success: false, message: 'Should have thrown 400' };
        } catch (error) {
          if (error.response?.status === 400) {
            return { 
              success: true, 
              message: `✓ 400 handled correctly: ${error.response.data.message}` 
            };
          }
          return { success: false, message: `✗ Unexpected error: ${error.message}` };
        }
      }
    },
    {
      name: 'Health Check (Success)',
      test: async () => {
        try {
          const response = await axios.get('http://localhost:3000/health');
          if (response.status === 200 && response.data.status === 'OK') {
            return { 
              success: true, 
              message: `✓ Health check passed: ${response.data.message}` 
            };
          }
          return { success: false, message: '✗ Health check failed' };
        } catch (error) {
          return { success: false, message: `✗ Health check error: ${error.message}` };
        }
      }
    },
    {
      name: 'Successful Login Flow',
      test: async () => {
        try {
          // First, try to register a test user
          const timestamp = Date.now();
          const testUser = {
            username: `errortest${timestamp}`,
            email: `errortest${timestamp}@example.com`,
            password: 'password123'
          };
          
          await axios.post(`${BASE_URL}/auth/register`, testUser);
          
          // Then login
          const loginResponse = await axios.post(`${BASE_URL}/auth/login`, {
            email: testUser.email,
            password: testUser.password
          });
          
          if (loginResponse.status === 200 && loginResponse.data.token) {
            return { 
              success: true, 
              message: `✓ Login successful, token received` 
            };
          }
          return { success: false, message: '✗ Login failed' };
        } catch (error) {
          if (error.response?.status === 409) {
            // User already exists, try logging in
            return { 
              success: true, 
              message: `✓ Validation working (user exists)` 
            };
          }
          return { success: false, message: `✗ Error: ${error.message}` };
        }
      }
    },
    {
      name: 'Check Logs Directory',
      test: async () => {
        const fs = require('fs');
        const path = require('path');
        const logsDir = path.join(__dirname, 'logs');
        
        if (fs.existsSync(logsDir)) {
          const files = fs.readdirSync(logsDir);
          if (files.length > 0) {
            return { 
              success: true, 
              message: `✓ Logs directory exists with ${files.length} file(s): ${files.join(', ')}` 
            };
          }
          return { 
            success: true, 
            message: `✓ Logs directory exists (empty)` 
          };
        }
        return { success: false, message: '✗ Logs directory not found' };
      }
    }
  ];

  let passed = 0;
  let failed = 0;

  for (const test of tests) {
    console.log(`\n${test.name}:`);
    try {
      const result = await test.test();
      console.log(`  ${result.message}`);
      if (result.success) passed++;
      else failed++;
    } catch (error) {
      console.log(`  ✗ Test error: ${error.message}`);
      failed++;
    }
  }

  console.log('\n' + '='.repeat(50));
  console.log(`\nTest Results: ${passed}/${tests.length} passed, ${failed} failed`);
  
  if (failed === 0) {
    console.log('\n✅ All error handling tests passed!');
  } else {
    console.log(`\n⚠️  Some tests failed. Check the logs for details.`);
  }
}

// Run tests
testErrorHandling().catch(error => {
  console.error('Fatal error:', error);
  process.exit(1);
});