import requests

class ApiClient():
    def __init__(self, api_url, default_token=None):
        super().__init__()
        self.api_url = api_url
        self.default_token = default_token

    def __request(self, endpoint, payload=None, params=None, method='GET', token=None):
        if payload is None:
            payload = {}
        if params is None:
            params = {}

        request_url = f'{self.api_url}{endpoint}'

        headers = {}
        if token is None:
            token = self.default_token
        if token:
            headers['Authorization'] = f'Bearer {token}'
        try:
            if method.upper() == 'POST':
                response = requests.post(request_url, json=payload, headers=headers)
            elif method.upper() == 'GET':
                response = requests.get(request_url, params=params, headers=headers)
            elif method.upper() == 'PUT':
                response = requests.put(request_url, json=payload, headers=headers)
            elif method.upper() == 'DELETE':
                response = requests.delete(request_url, json=payload, headers=headers)
            else:
                raise ValueError("Unsupported HTTP method: {}".format(method))

            if response.status_code != 200:
                self.warning(f'Return code {response.status_code} from {request_url} with request {method} with message {response.text}')
                
        except requests.exceptions.RequestException as e:
            self.error("An error occurred:", e)
            return None

        return response

    def get(self, endpoint, params=None, token=None):
        return self.__request(endpoint, method='GET', params=params, token=token)

    def post(self, endpoint, payload=None, token=None):
        return self.__request(endpoint, payload=payload, method='POST', token=token)

    def put(self, endpoint, payload=None, token=None):
        return self.__request(endpoint, payload=payload, method='PUT', token=token)

    def delete(self, endpoint, payload=None, token=None):
        return self.__request(endpoint, payload=payload, method='DELETE', token=token)
    
    def reassign_token(self, token):
        self.default_token = token

    def warning(self, message):
        print(f"WARNING: {message}")

    def error(self, message, exception=None):
        print(f"ERROR: {message}")
        if exception:
            print(f"Exception: {exception}")