import json
import requests
import os

from configparser import RawConfigParser, NoSectionError, NoOptionError

class AuthenticationException(Exception):
    pass

class RateLimitExceeded(Exception):
    pass

class InternalServer(Exception):
    pass

class HetznerConfig:
    def __init__(self):
        config = RawConfigParser()
        config.read([os.path.expanduser('~/.hetzner.conf')])

        self.api_key = config.get("default", "api_key")

config = HetznerConfig()

def call(endpoint, url_params=None, body=None, method="GET"):
    api = "https://api.hetzner.cloud/v1/{}".format(endpoint)
    headers = {"Authorization": "Bearer {}".format(config.api_key)}
    data = json.dumps(body) if body is not None else None

    if method == "GET":
        request = requests.get(api, headers=headers, params=url_params)
    elif method == "POST" or (method == "GET" and body is not None):
        request = requests.post(api, data=data, headers=headers, params=url_params)
    elif method == "DELETE":
        request = requests.delete(api, headers=headers)
    elif method == "PUT":
        request = requests.put(api, headers=headers, data=data)

    if request.status_code == 401 or request.status_code == 403:
        raise AuthenticationException()

    if request.status_code == 429:
        raise RateLimitExceeded()

    if request.status_code == 500:
        raise InternalServer(request.text)

    if not request.text:
        return request.status_code, ""

    js = request.json()

    return request.status_code, js

def get(*args, **kwargs):
    return call(*args, method="GET", **kwargs)

def post(*args, **kwargs):
    return call(*args, method="POST", **kwargs)