import dotenv from 'dotenv';

dotenv.config();

const REQUIRED_ENV_VARS = ['EXA_API_KEY', 'OPENROUTER_API_KEY'];

export function getConfig() {
  return {
    port: Number(process.env.PORT) || 3000,
    host: process.env.HOST || '0.0.0.0',
    exaApiKey: process.env.EXA_API_KEY,
    openRouterApiKey: process.env.OPENROUTER_API_KEY,
    maintenanceMode: process.env.MAINTENANCE_MODE === 'true',
  };
}

export function validateConfig(config) {
  const missing = REQUIRED_ENV_VARS.filter((name) => !process.env[name]);

  if (missing.length === 0) {
    return;
  }

  for (const name of missing) {
    console.error(`Error: ${name} environment variable is not set.`);
  }

  process.exit(1);
}