#!/usr/bin/env node

/**
 * HLS Endpoint Verification Script
 * Tests the HLS streaming endpoints to ensure they work correctly
 */

const http = require('http');
const fs = require('fs');
const path = require('path');

const TEST_VIDEO_ID = 109; // The .ts file from the logs
const HOST = 'localhost';
const PORT = 3000;

function makeRequest(path, method = 'GET') {
  return new Promise((resolve, reject) => {
    const options = {
      hostname: HOST,
      port: PORT,
      path: path,
      method: method,
      headers: {
        'Accept': '*/*',
        'User-Agent': 'HLS-Test/1.0'
      }
    };

    const req = http.request(options, (res) => {
      let data = '';
      
      res.on('data', (chunk) => {
        data += chunk;
      });
      
      res.on('end', () => {
        resolve({
          status: res.statusCode,
          headers: res.headers,
          data: data
        });
      });
    });

    req.on('error', (err) => {
      reject(err);
    });

    req.setTimeout(5000, () => {
      req.destroy();
      reject(new Error('Request timeout'));
    });

    req.end();
  });
}

async function testHLSEndpoints() {
  console.log(`🧪 Testing HLS endpoints for video ID: ${TEST_VIDEO_ID}`);
  console.log('=====================================');

  try {
    // Test 1: Player Config Endpoint
    console.log('\n1️⃣ Testing Player Config Endpoint...');
    try {
      const playerConfig = await makeRequest(`/api/video/${TEST_VIDEO_ID}/player-config`);
      console.log(`   Status: ${playerConfig.status} ${playerConfig.status === 200 ? '✅' : '❌'}`);
      
      if (playerConfig.status === 200) {
        const config = JSON.parse(playerConfig.data);
        console.log(`   Player Type: ${config.player?.type || 'unknown'}`);
        console.log(`   Format Type: ${config.format?.type || 'unknown'}`);
        console.log(`   HLS URL: ${config.streaming?.hls_url || 'none'}`);
        console.log(`   Direct URL: ${config.streaming?.direct_url || 'none'}`);
        
        if (config.format?.type === 'hls') {
          console.log('   ✅ Format correctly identified as HLS');
        } else {
          console.log('   ⚠️  Format not identified as HLS - checking file extension...');
        }
      } else {
        console.log(`   Response: ${playerConfig.data}`);
      }
    } catch (err) {
      console.log(`   ❌ Error: ${err.message}`);
    }

    // Test 2: HLS Playlist Endpoint (.m3u8)
    console.log('\n2️⃣ Testing HLS Playlist (.m3u8)...');
    try {
      const playlist = await makeRequest(`/api/stream/hls/${TEST_VIDEO_ID}/playlist.m3u8`);
      console.log(`   Status: ${playlist.status} ${playlist.status === 200 ? '✅' : '❌'}`);
      console.log(`   Content-Type: ${playlist.headers['content-type'] || 'none'}`);
      
      if (playlist.status === 200) {
        console.log('   ✅ Playlist loaded successfully');
        console.log(`   Content-Length: ${playlist.headers['content-length'] || 'unknown'} bytes`);
        
        // Validate M3U8 format
        const lines = playlist.data.split('\n');
        const hasM3UHeader = lines[0].includes('#EXTM3U');
        const hasTargetDuration = lines.some(line => line.includes('#EXT-X-TARGETDURATION'));
        const hasSegments = lines.some(line => line.endsWith('.ts'));
        
        console.log(`   M3U8 Format: ${hasM3UHeader ? '✅ Valid' : '❌ Invalid'}`);
        console.log(`   Target Duration: ${hasTargetDuration ? '✅ Present' : '❌ Missing'}`);
        console.log(`   Segments: ${hasSegments ? '✅ Found' : '❌ None'}`);
        
        if (hasM3UHeader) {
          // Count segments
          const segments = lines.filter(line => line.endsWith('.ts'));
          console.log(`   Number of segments: ${segments.length}`);
          
          // Show first few lines
          console.log('   First 5 lines:');
          lines.slice(0, 5).forEach(line => console.log(`     ${line}`));
        }
      } else {
        console.log(`   Response: ${playlist.data}`);
      }
    } catch (err) {
      console.log(`   ❌ Error: ${err.message}`);
    }

    // Test 3: HLS Playlist Endpoint (without .m3u8)
    console.log('\n3️⃣ Testing HLS Playlist (without .m3u8)...');
    try {
      const playlist = await makeRequest(`/api/stream/hls/${TEST_VIDEO_ID}/playlist`);
      console.log(`   Status: ${playlist.status} ${playlist.status === 200 ? '✅' : '❌'}`);
      
      if (playlist.status === 200) {
        console.log('   ✅ Alternative playlist route works');
      }
    } catch (err) {
      console.log(`   ❌ Error: ${err.message}`);
    }

    // Test 4: HLS Segment Endpoint
    console.log('\n4️⃣ Testing HLS Segment (segment 0)...');
    try {
      const segment = await makeRequest(`/api/stream/hls/${TEST_VIDEO_ID}/segment/0.ts`);
      console.log(`   Status: ${segment.status} ${segment.status === 200 ? '✅' : '❌'}`);
      console.log(`   Content-Type: ${segment.headers['content-type'] || 'none'}`);
      
      if (segment.status === 200) {
        console.log('   ✅ Segment loaded successfully');
        console.log(`   Content-Length: ${segment.headers['content-length'] || 'unknown'} bytes`);
        
        // Check if it's actually a TS file
        const isBinary = segment.data.includes('\0') || /[^\x20-\x7E\n\r\t]/.test(segment.data);
        console.log(`   Content Type: ${isBinary ? '✅ Binary (likely TS)' : '⚠️  Text (unexpected)'}`);
      } else {
        console.log(`   Response: ${segment.data}`);
        
        // Check if it's a fallback message
        if (segment.data.includes('not yet implemented')) {
          console.log('   ⚠️  Segment serving not implemented for this format');
        }
      }
    } catch (err) {
      console.log(`   ❌ Error: ${err.message}`);
    }

    // Test 5: Direct Stream Endpoint (for comparison)
    console.log('\n5️⃣ Testing Direct Stream (for comparison)...');
    try {
      const direct = await makeRequest(`/api/stream/direct/${TEST_VIDEO_ID}`);
      console.log(`   Status: ${direct.status} ${direct.status === 200 ? '✅' : '❌'}`);
      console.log(`   Content-Type: ${direct.headers['content-type'] || 'none'}`);
      
      if (direct.status === 200) {
        console.log('   ✅ Direct streaming works');
        console.log(`   Content-Length: ${direct.headers['content-length'] || 'unknown'} bytes`);
        
        // Check for range support
        const acceptsRanges = direct.headers['accept-ranges'];
        console.log(`   Range Support: ${acceptsRanges ? `✅ ${acceptsRanges}` : '❌ None'}`);
      } else {
        console.log(`   Response: ${direct.data}`);
      }
    } catch (err) {
      console.log(`   ❌ Error: ${err.message}`);
    }

    console.log('\n✅ HLS endpoint testing completed!');
    console.log('\n🎯 Summary:');
    console.log('• Player config should identify .ts files as HLS-compatible');
    console.log('• HLS playlist should return valid M3U8 format');
    console.log('• Segments should load as binary data');
    console.log('• Direct streaming should work as fallback');
    
  } catch (error) {
    console.error('❌ Test suite failed:', error.message);
  }
}

// Run the tests
console.log('🚀 Starting HLS endpoint verification...');
console.log(`Testing against: http://${HOST}:${PORT}`);
console.log('Make sure your development server is running!');
console.log('');

testHLSEndpoints().catch(console.error);