import 'dart:io' show stdout;
import 'package:qr/qr.dart';

void main() {
  final url = 'https://eat.wktyl.com/?id=033793';
  
  print('=== ASCII 二维码验证 ===\n');
  print('URL: $url\n');
  
  final qrCode = QrCode.fromData(
    data: url,
    errorCorrectLevel: QrErrorCorrectLevel.M,
  );
  final qrImage = QrImage(qrCode);
  final moduleCount = qrImage.moduleCount;
  
  print('模块数量: ${moduleCount}x${moduleCount}\n');
  
  // 用双倍宽度字符绘制
  print('╔${'═' * (moduleCount * 2)}╗');
  for (var row = 0; row < moduleCount; row++) {
    stdout.write('║');
    for (var col = 0; col < moduleCount; col++) {
      stdout.write(qrImage.isDark(row, col) ? '██' : '  ');
    }
    stdout.writeln('║');
  }
  print('╚${'═' * (moduleCount * 2)}╝');
  
  print('\n--- 提示 ---');
  print('用微信/支付宝扫描上方二维码可打开链接');
  
  // 输出纯文本版本(无边框)
  print('\n=== 纯文本版(Word可用) ===\n');
  for (var row = 0; row < moduleCount; row++) {
    for (var col = 0; col < moduleCount; col++) {
      stdout.write(qrImage.isDark(row, col) ? '██' : '  ');
    }
    stdout.writeln();
  }
}