podkop/fe-app-podkop/src/validators/validateTrojanUrl.ts

import { ValidationResult } from './types';

// TODO refactor current validation and add tests
export function validateTrojanUrl(url: string): ValidationResult {
  if (!url.startsWith('trojan://')) {
    return {
      valid: false,
      message: _('Invalid Trojan URL: must start with trojan://'),
    };
  }

  if (!url || /\s/.test(url)) {
    return {
      valid: false,
      message: _('Invalid Trojan URL: must not contain spaces'),
    };
  }

  try {
    const parsedUrl = new URL(url);

    if (!parsedUrl.username || !parsedUrl.hostname || !parsedUrl.port) {
      return {
        valid: false,
        message: _(
          'Invalid Trojan URL: must contain username, hostname and port',
        ),
      };
    }
  } catch (_e) {
    return { valid: false, message: _('Invalid Trojan URL: parsing failed') };
  }

  return { valid: true, message: _('Valid') };
}