import 'dart:io';

import 'package:libac_dart/utils/IOTools.dart';

void echoMode(bool val) {
  try {
    stdin.echoMode = val;
    stdin.lineMode = val;
  } catch (E) {}

  try {
    stdin.echoNewlineMode = val;
  } catch (E) {}
}

Future<void> main(List<String> arguments) async {
  await prnt('\rPress any key to continue...');

  echoMode(false);

  while (true) {
    int charCode = stdin.readByteSync(); // Read a single byte

    // Ignore -1 (EOF or invalid input)
    if (charCode == -1) {
      continue;
    }

    // Check if the input is "Enter" (ASCII 10 or 13) or a valid letter from 'a' to 'z' (ASCII 97-122 or 65-90)
    if (charCode == 10 ||
        charCode == 13 || // Enter key (line feed or carriage return)
        (charCode >= 65 && charCode <= 90) || // Uppercase 'A'-'Z'
        (charCode >= 97 && charCode <= 122)) {
      // Lowercase 'a'-'z'
      break; // Exit loop if valid input is received
    }
  }

  echoMode(true);

  await prnt('\r\n'); // Print a newline for formatting
}