#!/usr/bin/python2.5
#Copyright(c)2008 TikiRobot.net - Software license GPL version 3.
 
import time
import datetime
import os
import fcntl
import sys
import codecs
import re
 
# CalculateRelativeTime()
#_______________________________________________________________________________
def CalculateRelativeTime(str):
    dt = datetime.datetime.strptime(str, '%a %b %d %H:%M:%S +0000 %Y')
    now = datetime.datetime.utcnow()
    delta = now - dt
    secs  = delta.seconds
    if (delta.days > 0):
        return "%d days ago"%(delta.days)
    elif (secs < 60):
        return "%s seconds ago"%(int(secs))
    elif (secs < 3600):
        return "%s minutes ago"%(int(secs/60))
    else:
        return "%s hours ago"%(int(secs/3600))
 
# main()
#_______________________________________________________________________________
print """Content-type: text/javascript; charset=UTF-8\n"""
 
useCachedRss = True
cacheFile    = 'cache/twitter.json'
sys.stdout = codecs.getwriter('utf8')(sys.stdout)
 
try:
    stats = os.stat(cacheFile)
    if (time.time() - stats.st_mtime) > 300:
        #cache expired
        useCachedRss = False
except OSError:
    #cache file not found
    useCachedRss = False
 
if useCachedRss:
    try:
        #print "reading cached json"
        fh = open(cacheFile, 'r')
        fcntl.lockf(fh, fcntl.LOCK_SH)
        contents = fh.read()
        fcntl.lockf(fh, fcntl.LOCK_UN)
        fh.close()    
    except:
        print "got some kind of error when reading cached json. quitting"
        sys.exit()
else:
    try:
        #print "fetching new json"
        import urllib2
        apiurl = 'http://twitter.com/statuses/friends_timeline.json?count=5'
        auth_handler = urllib2.HTTPBasicAuthHandler()
        auth_handler.add_password(
            realm='Twitter API', 
            uri=apiurl,
            user='username',
            passwd='password'
        )
        opener = urllib2.build_opener(auth_handler)            
        urllib2.install_opener(opener)
        urlfh = urllib2.urlopen(apiurl)
        contents = urlfh.read()
        urlfh.close()
        fh = open(cacheFile, 'w')
        fcntl.lockf(fh, fcntl.LOCK_EX)
        fh.write(contents)
        fcntl.lockf(fh, fcntl.LOCK_UN)
        fh.close()
    except:
        print "got some kind of error when fetching twitter timeline. quitting"
        sys.exit()
 
 
import json
timeline = json.read(contents)
htmlstr = ""
for i in range(5):
    name = timeline[i]['user']['screen_name']
    imgurl = re.sub(r'_normal.(jpg|png)$', r'_mini.\1', timeline[i]['user']['profile_image_url'])
    twit   = re.sub(r'\'', '&#39;', timeline[i]['text'])
    twit   = re.sub(r'\n', ' ', twit)
    twit   = re.sub(r'http://tinyurl.com/(\S+)', r'<a href="http://tinyurl.com/\1">tinyurl.com/\1</a>', twit)
    when   = CalculateRelativeTime(timeline[i]['created_at'])
    htmlstr += """<div class="twitter">"""
    htmlstr += """<img src="%s"/>"""%(imgurl)
    htmlstr += """<div class="twitterRight">"""
    htmlstr += """<a href="http://twitter.com/%s"><strong>%s</strong></a>: """%(name, name)
    htmlstr += twit
    htmlstr += """<span class="twitterMeta">- """ + when + "</span>"
    htmlstr += """</div>"""
    htmlstr += """<div class="clear"></div>"""
    htmlstr += """</div>"""
 
print """var tikiTwits = '"""+htmlstr+"';"
print """document.write(tikiTwits);"""