import requests

MEDITRAK_API_KEY = 'your_api_key_here'
BASE_URL = 'http://meditrakapp.com/api/v1'

class MediTrakAPI:
    def __init__(self, api_key):
        self.api_key = api_key
        self.session = requests.Session()
        self.session.headers.update({
            'Authorization': f'Bearer {api_key}'
        })
    
    def get_invoices(self, status=None, limit=50):
        """Get list of invoices"""
        params = {'limit': limit}
        if status:
            params['status'] = status
        
        response = self.session.get(
            f'{BASE_URL}/invoices/',
            params=params
        )
        response.raise_for_status()
        return response.json()['invoices']
    
    def get_statistics(self, date_from=None, date_to=None):
        """Get invoice statistics"""
        params = {}
        if date_from:
            params['date_from'] = date_from
        if date_to:
            params['date_to'] = date_to
        
        response = self.session.get(
            f'{BASE_URL}/invoices/stats/',
            params=params
        )
        response.raise_for_status()
        return response.json()['statistics']

# Usage
api = MediTrakAPI(MEDITRAK_API_KEY)
invoices = api.get_invoices(status='approved', limit=100)
print(f"Found {len(invoices)} approved invoices")

apiKey = $apiKey;
        $this->baseUrl = $baseUrl;
    }
    
    public function getInvoices($params = []) {
        $url = $this->baseUrl . '/invoices/';
        if (!empty($params)) {
            $url .= '?' . http_build_query($params);
        }
        
        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_HTTPHEADER, [
            'Authorization: Bearer ' . $this->apiKey
        ]);
        
        $response = curl_exec($ch);
        curl_close($ch);
        
        return json_decode($response, true);
    }
}

// Usage
$api = new MediTrakAPI('your_api_key_here');
$invoices = $api->getInvoices(['status' => 'approved', 'limit' => 100]);
echo "Found " . count($invoices['invoices']) . " invoices\n";

?>