/// <reference types="vite/client" />

/**
 * Environment variable helpers for API client configuration
 * Supports both Vite (import.meta.env) and Node.js (process.env) environments
 */

/**
 * Get the API base URL from environment variables
 * Falls back to development URL if not specified
 */
export function getApiUrl(): string {
  // Check Vite environment first (browser/Vite apps)
  if (typeof import.meta !== 'undefined' && import.meta.env) {
    return import.meta.env.VITE_API_URL || 'http://localhost:4002';
  }

  // Fallback to Node.js environment (server-side or tests)
  if (typeof process !== 'undefined' && process.env) {
    return process.env.VITE_API_URL || process.env.API_URL || 'http://localhost:4002';
  }

  // Default fallback
  return 'http://localhost:4002';
}

/**
 * Get the application name from environment variables
 */
export function getAppName(): string {
  if (typeof import.meta !== 'undefined' && import.meta.env) {
    return import.meta.env.VITE_APP_NAME || 'unknown';
  }

  if (typeof process !== 'undefined' && process.env) {
    return process.env.VITE_APP_NAME || process.env.APP_NAME || 'unknown';
  }

  return 'unknown';
}

/**
 * Check if running in development mode
 */
export function isDevelopment(): boolean {
  if (typeof import.meta !== 'undefined' && import.meta.env) {
    return import.meta.env.MODE === 'development' || import.meta.env.DEV === true;
  }

  if (typeof process !== 'undefined' && process.env) {
    return process.env.NODE_ENV === 'development';
  }

  return false;
}

/**
 * Check if running in production mode
 */
export function isProduction(): boolean {
  if (typeof import.meta !== 'undefined' && import.meta.env) {
    return import.meta.env.MODE === 'production' || import.meta.env.PROD === true;
  }

  if (typeof process !== 'undefined' && process.env) {
    return process.env.NODE_ENV === 'production';
  }

  return false;
}

/**
 * Get environment variable value with optional fallback
 */
export function getEnv(key: string, fallback?: string): string | undefined {
  // Try Vite environment
  if (typeof import.meta !== 'undefined' && import.meta.env) {
    const value = import.meta.env[key];
    if (value !== undefined) {return String(value);}
  }

  // Try Node.js environment
  if (typeof process !== 'undefined' && process.env) {
    const value = process.env[key];
    if (value !== undefined) {return value;}
  }

  return fallback;
}