import type { EbsiEnvConfiguration } from "./types.ts";

import { ConfigurationError } from "./errors/index.ts";

/**
 * Validate EBSI environment configuration.
 * @param config - EBSI environment configuration to validate.
 */
export function validateConfig(config: EbsiEnvConfiguration) {
  // Validate hosts
  const { hosts } = config;
  if (!Array.isArray(hosts) || hosts.length === 0) {
    throw new ConfigurationError("At least 1 trusted host must be defined");
  }

  for (const host of hosts) {
    try {
      new URL(`https://${host}`);
    } catch {
      throw new ConfigurationError(`Invalid host ${host}`);
    }
  }
}