from tiddlyweb.store import Store
from tiddlyweb.web.util import get_serialize_type
from tiddlyweb.web.wsgi import HTMLPresenter

class GuvPresenter(object):

    """ 
    Take the core app output, see if it is text/html, 
    and if it is, add some framework. 
    """

    def __init__(self, application):
        self.application = application

    def __call__(self, environ, start_response):
        output = self.application(environ, start_response)
        output = ''.join(output)
        if environ.has_key('tiddlyweb.title'):
            return [self._header(environ), output, self._footer(environ)]
        return output

    def _header(self, environ):
        links = '\n'.join(environ['tiddlyweb.links'])
        return """ 
<html> 
<head> 
<title>TiddlyGuv - %s</title> 
%s 
</head> 
<body> 
<div id="header"></div> 
""" % (environ['tiddlyweb.title'], links)

    def _footer(self, environ):
        return """ 
<div id="footer">This is <a href="http://www.tiddlywiki.org/wiki/TiddlyGuv">TiddlyGuv</a></div> 
</body> 
</html> 
"""

def init(config):
   print config['server_response_filters']
   config['server_response_filters'].remove(HTMLPresenter)
   config['server_response_filters'].insert(0, GuvPresenter)
   print config['server_response_filters']