const API_BASE = process.env.NEXT_PUBLIC_API_URL?.replace(/\/$/, '') || 'http://localhost:8000';

async function request(path, init = {}) {
  const response = await fetch(`${API_BASE}${path}`, {
    headers: {
      'Content-Type': 'application/json',
      ...(init.headers || {}),
    },
    ...init,
  });

  if (!response.ok) {
    const text = await response.text();
    throw new Error(`Request failed: ${response.status} ${text}`);
  }

  return response.json();
}

export function buildMediaUrl(path) {
  if (!path) return null;
  if (path.startsWith('http')) return path;
  return `${API_BASE}${path}`;
}

export async function fetchProducts() {
  return request('/api/commerce/products/');
}

export async function fetchProduct(slug) {
  if (!slug) throw new Error('Product slug is required');
  return request(`/api/commerce/products/${slug}/`);
}

export async function fetchCategories() {
  return request('/api/commerce/categories/');
}

export async function fetchDeliveryZones() {
  return request('/api/commerce/delivery-zones/');
}

export async function submitOrder(payload) {
  return request('/api/commerce/orders/', {
    method: 'POST',
    body: JSON.stringify(payload),
  });
}