import requests
#import json
import demjson

class BadJSON(Exception):
    def __init__(self, value):
        self.parameter = value
    def __str__(self):
        return repr(self.parameter)

class BloggerClient(object):
    """ Client interface for Blogger API. """
    def __init__(self, key):
        self.key = key
        self.base = 'https://www.googleapis.com/blogger/v3'

    def _send_request(self, url, parameters={}):
        """ Sends an HTTP get request to Blogger API.
            Returns JSON decoded response. """
        url = '{base}{url}?'.format(base=self.base, url=url)
        parameters['key'] = self.key
        try:
            r = requests.get(url, params=parameters)
            print 'Connecting:', r.url, '\n'            # debug
        except:
            print "** Could not reach url:\n", url
            return
        ascii_rtext = r.text.encode('ascii', 'ignore').decode('ascii')
        api_response = r'''{rtext}'''.format(rtext=ascii_rtext)
        #print api_response      # debug
        return self._jload(api_response)

    def _jload(self, api_response):
        """ Accepts text API response. Returns JSON encoded response. """
        try:
            parsed = demjson.decode(api_response)
        except:
            print "** Could not decode JSON data\n"
            raise BadJSON('{}\nAbove JSON failed to load'.format(repr(api_response)))
            print repr(parsed)      # debug
        return parsed

    def _is_200_response(self, parsed):
        """ Returns true if loaded JSON is 200 ok status. """
        pass

    def get_blog_id(self, blog_url):
        """ Makes an API request for blog info at blog url. Returns blog id. """
        api_url = '/blogs/byurl'
        kwargs = {'url': blog_url}
        blog = self._send_request(url=api_url, parameters=kwargs)
        return blog['id']

    def get_blog_info(self, blog_url):
        """ Makes an API request. Returns Blog item information.
        Required params: url, key. """
        api_url = '/blogs/byurl'
        kwargs = {'url': blog_url}
        blog_info = self._send_request(api_url, kwargs)
        return blog_info

    def get_posts(self, blog_id, **kwargs):
        """ Makes an API request. Returns list of posts from blog id. """
        api_url = '/blogs/{id}/posts'.format(id=blog_id)
        return self._send_request(api_url, kwargs)

if __name__ == '__main__':
    pass