export class CodeGeneratorService {
  static generateCode(input_string: string) {
    if (!input_string) {
      throw new Error('Input string cannot be empty');
    }

    // Step 1: Trim, to lowercase
    let code = input_string.trim().toLowerCase();

    // Step 2: Replace all whitespace with underscores
    code = code.replace(/\s+/g, '_');

    // Step 3: Remove all non-alphanumeric and non-underscore characters
    const sanitizedCode = code.replace(/[^a-z0-9_]/g, '');

    if (!sanitizedCode) {
      throw new Error('Invalid input string, cannot generate code');
    }

    return sanitizedCode;
  }
}