swizzler/swizzler.py

# -*- coding: utf-8 -*-
import cherrypy, pystache
from twister import Twister
from appdir import APPDIR

stache = pystache.Renderer(
    search_dirs='{0}/templates'.format(APPDIR),file_encoding='utf-8',string_encoding='utf-8',file_extension='html')

### twistparser (format users, urls, etc. in text). Subclasses twitter-text-python

from ttp import ttp
class TwistParser(ttp.Parser):
    def format_tag(self, tag, text):
        '''Return formatted HTML for a hashtag.'''
        return '<a target="_top" href="{0}/tag/{1}">{2}{3}</a>'.format(
            cherrypy.request.base+cherrypy.request.script_name,
            ttp.urllib.quote(text.lower().encode('utf-8'),'xmlcharrefreplace'), tag, text)

    def format_username(self, at_char, user):
        '''Return formatted HTML for a username.'''
        return '<a target="_top" href="{0}/user/{1}">{2}{3}</a>'.format(
            cherrypy.request.base+cherrypy.request.script_name,
            user, at_char, user.lower())

    def format_list(self, at_char, user, list_name):
        '''We don't have lists, so we see it as "@user" followed by "/something"'''
        return '<a target="_top" href="{0}/user/{1}">{2}{3}</a>/{4}'.format(
            cherrypy.request.base+cherrypy.request.script_name,
            cherrypy.request.base+cherrypy.request.script_name, user, at_char, user.lower(), list_name)

    def format_url(self, url, text):
        '''Return formatted HTML for a url.'''
        return '<a target="_blank" rel="nofollow" href="{0}">{1}</a>'.format(ttp.escape(url), text)

twistparser = TwistParser()

def format_twist(message):
    return twistparser.parse(message).html

def format_trending(twister,num_messages=8):
    # ttp would only parse (for example) "#two" in "#two-words". rsplit removes the "-words" (sucks a bit less)
    return [html.rsplit('>',1)[0]+'>' for html in [
        format_twist(u'#{0}'.format(t)) for t in twister.get_trending_tags(num_messages)
    ] if html.find('>')>0] # the if is because ttf doesn't do unicode tags (TODO: find a better ttp fork or find/write some other lib)

### The Swizzler app
class SwizzlerApp(object):
    @cherrypy.expose
    def search_embed(self,userprefix=''):
        conf = cherrypy.request.app.config['swizzler']
        twister = Twister(conf['rpc_url'],format_twist)
        result = {'site_root':cherrypy.request.base+cherrypy.request.script_name}
        userprefix = userprefix.strip().split(' ')[0]
        if not userprefix.startswith('@'): userprefix = '@'+userprefix
        if len(userprefix)>1:
            result['user_prefix'] = userprefix
            result['users'] = twister.get_users_by_partial_name(userprefix[1:],conf['num_messages'])
        else:
            result['trending'] = format_trending(twister,3*conf['num_messages']) # no avatar = about 1/3 height :)
        return stache.render(stache.load_template('search'),result)

    @cherrypy.expose
    def twist(self,username,k):
        conf = cherrypy.request.app.config['swizzler']
        twister = Twister(conf['rpc_url'],format_twist)
        twist = twister.get_twist(username,k)
        twist['style_large'] = True
        rts = twister.get_twist_rts(username,k)
        replies = twister.get_twist_replies(username,k)
        result = {
            'is_twist':True,
            'title':u"@{0}: {1} - Swizzler".format(username,twist['time']),
            'twist':twist,
            'in_reply_to':twist.get('reply') and twister.get_twist(twist['reply']['username'],twist['reply']['k']) or None,
            'replies':replies,
            'any_replies':not not replies,
            'rts':rts,
            'any_rts':not not rts,
            'local_users':twister.local_user_menu()['users'],
            'info':twister.get_info(),
            'site_root':cherrypy.request.base+cherrypy.request.script_name,
        }
        return stache.render(stache.load_template('twist'),result)
    @cherrypy.expose
    def user(self,username='nobody'):
        if username=='nobody':
            raise cherrypy.HTTPRedirect('/') # promoted posts are nobody's profile
        conf = cherrypy.request.app.config['swizzler']
        twister = Twister(conf['rpc_url'],format_twist)
        user = twister.get_user_info(username)
        messages = twister.get_user_posts(username,conf['num_messages'])
        result = {
            'is_user':True,
            'title':u"{fullname} (@{username}): Profile - Swizzler".format(**user),
            'subject':user,
            'messages':messages,
            'any_messages':not not messages,
            'local_users':twister.local_user_menu()['users'],
            'info':twister.get_info(),
            'site_root':cherrypy.request.base+cherrypy.request.script_name,
        }
        return stache.render(stache.load_template('standard'),result)
    @cherrypy.expose
    def user_embed(self,username='nobody',style='normal'):
        if username=='nobody': username='' # to enable /nobody/large
        conf = cherrypy.request.app.config['swizzler']
        twister = Twister(conf['rpc_url'],format_twist)
        result = {
            'title':'@{0} - Swizzler'.format(username),
            'site_root':cherrypy.request.base+cherrypy.request.script_name,
            'user':twister.get_user_info(username)
        }
        result['style_{0}'.format(style)] = True
        return stache.render(stache.load_template('user-iframe'),result)
    @cherrypy.expose
    def tag(self,tag=''):
        tag = tag.strip().split(' ')[0]
        if tag.startswith('#'): tag = tag[1:]
        if not tag:
            raise cherrypy.HTTPRedirect('/') # go home to promoted posts
        conf = cherrypy.request.app.config['swizzler']
        twister = Twister(conf['rpc_url'],format_twist)
        messages = twister.get_tag_posts(tag)
        result = {
            'is_tag':True,
            'title':u"#{0} - Swizzler".format(tag),
            'subject':{"fullname":tag},
            'messages':messages,
            'any_messages':not not messages,
            'local_users':twister.local_user_menu()['users'],
            'info':twister.get_info(),
            'site_root':cherrypy.request.base+cherrypy.request.script_name,
        }
        return stache.render(stache.load_template('standard'),result)
    @cherrypy.expose
    def home(self,localusername='nobody',mode='feed'):
        if localusername=='nobody':
            raise cherrypy.HTTPRedirect('/') # promoted posts are nobody's home
        conf = cherrypy.request.app.config['swizzler']
        twister = Twister(conf['rpc_url'],format_twist)
        menu = twister.local_user_menu(localusername)
        if mode=='mentions':
            messages = twister.get_user_mentions(localusername)
        else:
            messages = twister.get_user_feed(localusername,conf['num_messages'])
        result = {
            'is_home':True,
            'is_mentions':mode=='mentions',
            'is_feed':mode!='mentions',
            'title':u"{fullname} (@{username}): {mode} - Swizzler".format(mode=mode=='mentions' and 'Mentions' or 'Home',**menu['active']),
            'local_users':menu['users'],
            'info':twister.get_info(),
            'subject':menu['active'],
            'messages':messages,
            'any_messages':not not messages,
            'site_root':cherrypy.request.base+cherrypy.request.script_name,
        }
        return stache.render(stache.load_template('standard'),result)
    @cherrypy.expose
    def messages(self,localusername,remoteusername=None):
        conf = cherrypy.request.app.config['swizzler']
        twister = Twister(conf['rpc_url'],format_twist)
        localuser = twister.get_user_info(localusername)
        remoteuser = remoteusername and twister.get_user_info(remoteusername) or None
        threads = remoteusername and twister.get_user_messages(localusername,remoteusername,conf['num_messages']) or twister.get_user_messages(localusername)
        result = {
            'is_messages':True,
            'title':u"{0} (@{1}): direct messages{2}".format(
                localuser['fullname'],localuser['username'],
                remoteuser and u" with {fullname} (@{username}) - Swizzler".format(**remoteuser) or ""),
            'subject':localuser,
            'remoteuser':remoteuser,
            'threads':threads,
            'any_threads':not not threads,
            'local_users':twister.local_user_menu()['users'],
            'info':twister.get_info(),
            'site_root':cherrypy.request.base+cherrypy.request.script_name,
        }
        return stache.render(stache.load_template('messages'),result)
    @cherrypy.expose
    def index(self):
        conf = cherrypy.request.app.config['swizzler']
        twister = Twister(conf['rpc_url'],format_twist)
        messages = twister.get_promoted_posts(conf['num_messages'])
        result = {
            'is_user':True, # i.e. we want to display "bio" and not mentions/DMs/profile buttons
            'is_promoted':True, # message template needs to know not to show "permalink"
            'title':"Welcome to Swizzler",
            'local_users':twister.local_user_menu('')['users'], # '' means: "Nobody" is active
            'info':twister.get_info(),
            'subject':{ # pseudo-user describing promoted posts
                'fullname':'Promoted posts',
                'bio':format_twist("""
Mining the twister blockchain protects the #twister-verse from attacks like http://twister.net.co/?p=236
but unlike doge, we don't have shiny coins to offer "our protectors".
Instead, they enjoy occasional minutes of fame in the form of the promoted posts you see here.
We #Respect their hard earned crypto-graffiti by appreciating them on coffee/spliff/soy-milk/etc. breaks, because that's how we roll yo.
Start mining today, and this (&#119834;&#119847;&#119837; moral satisfaction) can be yours.""")
            },
            'messages':messages,
            'any_messages':not not messages,
            'site_root':cherrypy.request.base+cherrypy.request.script_name,
        }
        return stache.render(stache.load_template('standard'),result)

if __name__ == '__main__':
    cherrypy.config.update('{0}/cherrypy.config'.format(APPDIR))
    app = SwizzlerApp()
    cherrypy.tree.mount(app,'/',config='{0}/cherrypy.config'.format(APPDIR))
    conf = cherrypy.tree.apps[''].config
    u,p = conf['swizzler'].get('browser_user'),conf['swizzler'].get('browser_password')
    print u,p
    if u and p:
        conf['/'].update({ 'tools.basic_auth.on': True,
            'tools.basic_auth.realm': 'Swizzler VIP lounge',
            'tools.basic_auth.users': {u:p}, 
            'tools.basic_auth.encrypt': lambda x: x})
    cherrypy.engine.start()
    cherrypy.engine.block()