/// Dart Mix Payloads Sender Test
/// Tests the smartsend function with mixed payload types
///
/// This test mirrors test_julia_mix_payloads_sender.jl and test_js_mix_payloads_sender.js
/// and demonstrates that any combination and any number of mixed content can be sent correctly.

import 'dart:io';
import 'dart:typed_data';
import 'package:http/http.dart' as http;
import 'package:uuid/uuid.dart';

// Add parent directory to path
import 'package:natsbridge/natsbridge.dart' as natsbridge;

const TEST_SUBJECT = '/natsbridge';
const TEST_BROKER_URL = String.fromEnvironment(
  'NATS_URL',
  defaultValue: 'nats.yiem.cc',
);
const TEST_FILESERVER_URL = String.fromEnvironment(
  'FILESERVER_URL',
  defaultValue: 'http://192.168.88.104:8080',
);
const SIZE_THRESHOLD = 1000000; // 1MB threshold

void logTrace(String message) {
  final timestamp = DateTime.now().toUtc().toIsoString();
  print('[$timestamp] [Correlation: $correlationId] $message');
}

Future<void> runTest() async {
  print('=== Dart Mix Payloads Sender Test ===\n');

  final uuid = const Uuid();
  final correlationId = uuid.v4();
  print('Correlation ID: $correlationId');
  print('Subject: $TEST_SUBJECT');
  print('Broker URL: $TEST_BROKER_URL');
  print('Fileserver URL: $TEST_FILESERVER_URL');
  print('Size Threshold: $SIZE_THRESHOLD bytes (1MB)\n');

  // Create sample data for each type (mirroring Julia test)
  final textData = 'Hello! This is a test chat message. 🎉\nHow are you doing today? 😊';

  final dictData = {
    'type': 'chat',
    'sender': 'serviceA',
    'receiver': 'serviceB',
    'metadata': {
      'timestamp': DateTime.now().toUtc().toIsoString(),
      'priority': 'high',
      'tags': ['urgent', 'chat', 'test']
    },
    'content': {
      'text': 'This is a JSON-formatted chat message with nested structure.',
      'format': 'markdown',
      'mentions': ['user1', 'user2']
    }
  };

  // Arrow table data (small - direct transport)
  final arrowTableSmall = [
    {'id': 1, 'name': 'Alice', 'score': 95, 'active': true},
    {'id': 2, 'name': 'Bob', 'score': 88, 'active': false},
    {'id': 3, 'name': 'Charlie', 'score': 92, 'active': true},
    {'id': 4, 'name': 'Diana', 'score': 78, 'active': true},
    {'id': 5, 'name': 'Eve', 'score': 85, 'active': false},
    {'id': 6, 'name': 'Frank', 'score': 91, 'active': true},
    {'id': 7, 'name': 'Grace', 'score': 89, 'active': true},
    {'id': 8, 'name': 'Henry', 'score': 76, 'active': false},
    {'id': 9, 'name': 'Ivy', 'score': 94, 'active': true},
    {'id': 10, 'name': 'Jack', 'score': 82, 'active': true}
  ];

  // Json table data (small - direct transport)
  final jsonTableSmall = [
    {'id': 1, 'name': 'Alice', 'score': 95, 'active': true},
    {'id': 2, 'name': 'Bob', 'score': 88, 'active': false},
    {'id': 3, 'name': 'Charlie', 'score': 92, 'active': true},
    {'id': 4, 'name': 'Diana', 'score': 78, 'active': true},
    {'id': 5, 'name': 'Eve', 'score': 85, 'active': false},
    {'id': 6, 'name': 'Frank', 'score': 91, 'active': true},
    {'id': 7, 'name': 'Grace', 'score': 89, 'active': true},
    {'id': 8, 'name': 'Henry', 'score': 76, 'active': false},
    {'id': 9, 'name': 'Ivy', 'score': 94, 'active': true},
    {'id': 10, 'name': 'Jack', 'score': 82, 'active': true}
  ];

  // Audio data (small binary - direct transport)
  final audioData = Uint8List(100);
  for (int i = 0; i < 100; i++) {
    audioData[i] = (Random().nextRange(1, 255)).toInt();
  }

  // Video data (small binary - direct transport)
  final videoData = Uint8List(150);
  for (int i = 0; i < 150; i++) {
    videoData[i] = (Random().nextRange(1, 255)).toInt();
  }

  // Binary data (small - direct transport)
  final binaryData = Uint8List(200);
  for (int i = 0; i < 200; i++) {
    binaryData[i] = (Random().nextRange(1, 255)).toInt();
  }

  // Large data for link transport testing
  final largeArrowTable = List.generate(20000, (i) => {
    'id': i + 1,
    'name': 'user_${i + 1}',
    'score': (Random().nextRange(50, 100)).toInt(),
    'active': Random().nextBool(),
    'timestamp': DateTime.now().toUtc().toIsoString()
  });

  final largeJsonTable = List.generate(50000, (i) => {
    'id': i + 1,
    'name': 'user_${i + 1}',
    'score': (Random().nextRange(50, 100)).toInt(),
    'active': Random().nextBool()
  });

  final largeAudioData = Uint8List(1500000);
  for (int i = 0; i < 1500000; i++) {
    largeAudioData[i] = (Random().nextRange(1, 255)).toInt();
  }

  final largeVideoData = Uint8List(1500000);
  for (int i = 0; i < 1500000; i++) {
    largeVideoData[i] = (Random().nextRange(1, 255)).toInt();
  }

  final largeBinaryData = Uint8List(1500000);
  for (int i = 0; i < 1500000; i++) {
    largeBinaryData[i] = (Random().nextRange(1, 255)).toInt();
  }

  // Read image files from disk (following Julia test pattern)
  final filePathSmallImage = './test/small_image.jpg';
  final fileDataSmallImage = File(filePathSmallImage).readAsBytesSync();
  final filenameSmallImage = filePathSmallImage.split('/').last;

  final filePathLargeImage = './test/large_image.png';
  final fileDataLargeImage = File(filePathLargeImage).readAsBytesSync();
  final filenameLargeImage = filePathLargeImage.split('/').last;

  logTrace('Creating payloads list with mixed content');

  // Create payloads list - mixed content with both small and large data
  // Small data uses direct transport, large data uses link transport
  final payloads = [
    // Small data (direct transport) - text, dictionary, arrowtable, jsontable, small image
    ['chat_text', textData, 'text'],
    ['chat_json', dictData, 'dictionary'],
    // ['arrow_table_small', arrowTableSmall, 'arrowtable'],
    ['json_table_small', jsonTableSmall, 'jsontable'],
    [filenameSmallImage, fileDataSmallImage, 'binary'],

    // Large data (link transport) - large arrowtable, large jsontable, large image, large audio, large video, large binary
    // ['arrow_table_large', largeArrowTable, 'arrowtable'],
    ['json_table_large', largeJsonTable, 'jsontable'],
    [filenameLargeImage, fileDataLargeImage, 'binary'],
    // ['audio_clip_large', largeAudioData, 'audio'],
    // ['video_clip_large', largeVideoData, 'video'],
    // ['binary_file_large', largeBinaryData, 'binary']
  ];

  logTrace('Total payloads: ${payloads.length}');

  try {
    // Send the message
    print('Sending mixed payloads...\n');
    final (env, envJsonStr) = await natsbridge.smartsend(
      TEST_SUBJECT,
      payloads,
      brokerUrl: TEST_BROKER_URL,
      fileserverUrl: TEST_FILESERVER_URL,
      fileserverUploadHandler: natsbridge.plikOneshotUpload,
      sizeThreshold: SIZE_THRESHOLD,
      correlationId: correlationId,
      msgPurpose: 'chat',
      senderName: 'dart-mix-test',
      receiverName: '',
      receiverId: '',
      replyTo: '',
      replyToMsgId: '',
      isPublish: true,
    );

    print('\n=== Envelope Created ===');
    print('Correlation ID: ${env['correlation_id']}');
    print('Message ID: ${env['msg_id']}');
    print('Timestamp: ${env['timestamp']}');
    print('Subject: ${env['send_to']}');
    print('Purpose: ${env['msg_purpose']}');
    print('Sender: ${env['sender_name']}');
    print('Payloads: ${env['payloads'].length}\n');

    // Log transport type for each payload
    for (int i = 0; i < env['payloads'].length; i++) {
      final payload = env['payloads'][i];
      logTrace('Payload ${i + 1} (${payload['dataname']}):');
      logTrace('  Transport: ${payload['transport']}');
      logTrace('  Type: ${payload['payload_type']}');
      logTrace('  Size: ${payload['size']} bytes');
      logTrace('  Encoding: ${payload['encoding']}');

      if (payload['transport'] == 'link') {
        logTrace('  URL: ${payload['data']}');
      }
    }

    // Summary
    print('\n--- Transport Summary ---');
    final directCount = env['payloads'].where((p) => p['transport'] == 'direct').length;
    final linkCount = env['payloads'].where((p) => p['transport'] == 'link').length;
    logTrace('Direct transport: $directCount payloads');
    logTrace('Link transport: $linkCount payloads');

    print('\nTest completed.');
  } catch (error) {
    print('\n❌ Test failed with error: $error');
    print('$error');
    exit(1);
  }
}

void main() {
  runTest();
}