"""tblib.py: A Trackback implementation in Python
"""
__author__ = "Matt Croydon <matt@ooiio.com>"
__copyright__ = "Copyright 2003, Matt Croydon"
__license__ = "GPL"
__version__ = "0.0.4"
__history__ = """
0.0.4: 1/22/03 - First public release, code cleanup
0.0.3: 1/22/03 - Removed hard coding that was used for testing
0.0.2: 1/21/03 - First working version.
0.0.1: 1/21/03 - Initial version.  Thanks to Mark Pilgrim for helping me figure some module basics out.
"""
import httplib, urllib, urlparse
"""Everything I needed to know about trackback I learned from the trackback tech specs page
http://www.movabletype.org/docs/mttrackback.html
"""
class TrackBack:
    
    def __init__(self, tbUrl, title, excerpt, url, blog_name):
        self.tbUrl = tbUrl
        self.title = title
        self.excerpt = excerpt
        self.url = url
        self.blog_name = blog_name

    def ping(self):
        # Create paramaters and make them play nice with HTTP
        # Python's httplib example helps a lot:
        # http://python.org/doc/current/lib/httplib-examples.html
        params = urllib.urlencode({'title': self.title, 'url': self.url, 'excerpt': self.excerpt, 'blog_name': self.blog_name})
        headers = ({"Content-type": "application/x-www-form-urlencoded"})
        # urlparse is my hero
        # http://www.python.org/doc/current/lib/module-urlparse.html
        tbUrlTuple = urlparse.urlparse(self.tbUrl)
        host = tbUrlTuple[1]
        path = tbUrlTuple[2]
        
        connection = httplib.HTTPConnection(host)
        connection.request("POST", path, params, headers)
        response = connection.getresponse()
        print response.status, response.reason
        data = response.read()
        print data
        connection.close()