// Утилиты для работы с API

const getApiUrl = (): string => {
  if (typeof window === 'undefined') {
    // SSR
    return process.env.NEXT_PUBLIC_API_URL || 'http://localhost:3001';
  }
  
  const isLocalhost = window.location.hostname === 'localhost';
  return isLocalhost
    ? 'http://localhost:3001'
    : process.env.NEXT_PUBLIC_API_URL || 'https://your-api-domain.com';
};

export const apiUrl = getApiUrl();

export interface ApiResponse<T = unknown> {
  success: boolean;
  data?: T;
  error?: string;
}

export async function apiRequest<T = unknown>(
  endpoint: string,
  options: RequestInit = {}
): Promise<ApiResponse<T>> {
  try {
    const response = await fetch(`${apiUrl}/api/${endpoint}`, {
      ...options,
      headers: {
        'Content-Type': 'application/json',
        ...options.headers,
      },
    });

    if (!response.ok) {
      throw new Error(`HTTP error! status: ${response.status}`);
    }

    const data = await response.json();
    return data;
  } catch (err) {
    console.error('API Error:', err);
    return {
      success: false,
      error: err instanceof Error ? err.message : 'Unknown error',
    };
  }
}