# Get authentication token
curl -X POST https://your-erp.com/api/v1/auth/login \
  -H "Content-Type: application/json" \
  -d '{"email": "admin@example.com", "password": "your_password"}'

# Response
{
  "token": "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9...",
  "user": { ... }
}

// JavaScript Example
const createInvoice = async (invoiceData) => {
  const response = await fetch('https://your-erp.com/api/v1/invoices', {
    method: 'POST',
    headers: {
      'Authorization': 'Bearer ' + authToken,
      'Content-Type': 'application/json'
    },
    body: JSON.stringify(invoiceData)
  });
  
  return await response.json();
};

// Example invoice data
const invoiceData = {
  customer_id: 12345,
  invoice_number: 'INV-2024-001',
  date: '2024-01-15',
  due_date: '2024-02-15',
  items: [
    {
      description: 'ERP Software License',
      quantity: 1,
      unit_price: 299.00,
      tax_rate: 8.5
    },
    {
      description: 'Implementation Services',
      quantity: 10,
      unit_price: 150.00,
      tax_rate: 8.5
    }
  ],
  notes: 'Annual subscription with implementation'
};

# Python Example
import requests

class DecconzERP:
    def __init__(self, base_url, api_key):
        self.base_url = base_url
        self.headers = {
            'Authorization': f'Bearer {api_key}',
            'Content-Type': 'application/json'
        }
    
    def get_products(self, page=1, limit=50):
        response = requests.get(
            f'{self.base_url}/api/v1/products',
            headers=self.headers,
            params={'page': page, 'limit': limit}
        )
        return response.json()
    
    def update_stock(self, product_id, quantity, warehouse_id=1):
        data = {
            'product_id': product_id,
            'quantity': quantity,
            'warehouse_id': warehouse_id,
            'adjustment_type': 'add' if quantity > 0 else 'subtract'
        }
        response = requests.post(
            f'{self.base_url}/api/v1/inventory/adjustments',
            headers=self.headers,
            json=data
        )
        return response.json()

# Usage
erp = DecconzERP('https://your-erp.com', 'your-api-key')
products = erp.get_products()
print(products)