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import json
import logging

import requests

from requests.auth import AuthBase


sendlog = logging.getLogger('clients.send')
recvlog = logging.getLogger('clients.recv')


# Add a convenience json property to the responses
def _json(self):
    try:
        return json.loads(self.content) if self.content else {}
    except ValueError:
        raise ClientError("Invalid JSON reply", self.status_code)
requests.Response.json = property(_json)

# Add a convenience status property to the responses
def _status(self):
    return requests.status_codes._codes[self.status_code][0].upper()
requests.Response.status = property(_status)


class XAuthTokenAuth(AuthBase):
    def __init__(self, token):
        self.token = token
    
    def __call__(self, r):
        r.headers['X-Auth-Token'] = self.token
        return r


class ClientError(Exception):
    def __init__(self, message, status=0, details=''):
        self.message = message
        self.status = status
        self.details = details


class Client(object):
    def __init__(self, base_url, token):
        self.base_url = base_url
        self.auth = XAuthTokenAuth(token)
    
    def raise_for_status(self, r):        
        message = "%d %s" % (r.status_code, r.status)
        details = r.text
        raise ClientError(message, r.status_code, details)

    def request(self, method, path, **kwargs):
        raw = kwargs.pop('raw', False)
        success = kwargs.pop('success', 200)
        if 'json' in kwargs:
            data = json.dumps(kwargs.pop('json'))
            kwargs['data'] = data
            headers = kwargs.setdefault('headers', {})
            headers['content-type'] = 'application/json'

        url = self.base_url + path
        kwargs.setdefault('auth', self.auth)
        kwargs.setdefault('verify', False)  # Disable certificate verification
        r = requests.request(method, url, **kwargs)
        
        req = r.request
        sendlog.info('%s %s', req.method, req.url)
        for key, val in req.headers.items():
            sendlog.info('%s: %s', key, val)
        sendlog.info('')
        if req.data:
            sendlog.info('%s', req.data)
        
        recvlog.info('%d %s', r.status_code, r.status)
        for key, val in r.headers.items():
            recvlog.info('%s: %s', key, val)
        recvlog.info('')
        if not raw and r.text:
            recvlog.debug(r.text)
        
        if success is not None:
            # Success can either be an in or a collection
            success = (success,) if isinstance(success, int) else success
            if r.status_code not in success:
                self.raise_for_status(r)

        return r

    def delete(self, path, **kwargs):
        return self.request('delete', path, **kwargs)

    def get(self, path, **kwargs):
        return self.request('get', path, **kwargs)

    def head(self, path, **kwargs):
        return self.request('head', path, **kwargs)

    def post(self, path, **kwargs):
        return self.request('post', path, **kwargs)

    def put(self, path, **kwargs):
        return self.request('put', path, **kwargs)


from .compute import ComputeClient as compute
from .image import ImageClient as image
from .storage import StorageClient as storage
from .cyclades import CycladesClient as cyclades
from .pithos import PithosClient as pithos
from .astakos import AstakosClient as astakos