#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# a at foo dot be - Alexandre Dulaunoy - http://www.foo.be/cgi-bin/wiki.pl/RssAny
#
# rssmerge.py is a simple script to gather rss feed and merge them in reverse
#             time order. Useful to keep track of recent events. 
#               
# this is still an early prototype and assume that you have full control of the 
# remote rss feeds (if not you may have some security issues).
# 
# TODO : - rss 2.0 and atom output
#        - full html output
#
# example of use : 
#  python2.5 rssmerge.py --output phtml --maxitem 20 "http://www.foo.be/cgi-bin/wiki.pl?action=journal&tile=AdulauMessyDesk" 
#   "http://api.flickr.com/services/feeds/photos_public.gne?id=31797858@N00&lang=en-us&format=atom" "http://a.6f2.net/cgi-bin/gitweb.cgi?
#   p=adulau/.git;a=rss" "http://www.librarything.com/rss/reviews/adulau"  > /tmp/test.inc

import feedparser
import sys,os
import time
import datetime
import md5
from optparse import OptionParser
import cgi

feedparser.USER_AGENT = "rssmerge.py +http://www.foo.be/"

def RenderMerge(itemlist,output="text"):

        i = 0

        if output == "text" :
                for item in itemlist:
                        i = i + 1
                        # Keep consistent datetime representation if not use allitem[item[1]]['updated'] 
                        timetuple = datetime.datetime.fromtimestamp(allitem[item[1]]['epoch'])

                        print str(i)+":"+allitem[item[1]]['title']+":"+timetuple.ctime()+":"+allitem[item[1]]['link']   

                        if i == int(options.maxitem):
                                break

        if output == "phtml" :
                print "<ul>"
                for item in itemlist:
                        i = i + 1
                        # Keep consistent datetime representation if not use allitem[item[1]]['updated'] 
                        timetuple = datetime.datetime.fromtimestamp(allitem[item[1]]['epoch'])
                        print "<li><a href=\""+unicode(allitem[item[1]]['link']).encode("utf-8")+"\">"+unicode(cgi.escape(allitem[item[1]]['title'])).encode("utf-8")+"</a> --- (<i>"+timetuple.ctime()+"</i>)</li>"
                        if i == int(options.maxitem):
                                break
                print "</ul>"


usage = "usage: %prog [options] url"
parser = OptionParser(usage)

parser.add_option("-m","--maxitem",dest="maxitem",help="maximum item to list in the feed, default 200")
parser.add_option("-o","--output",dest="output",help="output format (text, phtml), default text")

#2007-11-10 11:25:51
pattern = '%Y-%m-%d %H:%M:%S'

(options, args) = parser.parse_args()

if options.output == None:
        options.output = "text"
        
if options.maxitem == None:
        options.maxitem = 200
 
allitem = {}

for url in args:

        #print url

        d = feedparser.parse(url)

        for el in d.entries:

                eldatetime = datetime.datetime.fromtimestamp(time.mktime(el.modified_parsed))
                elepoch = int(time.mktime(time.strptime(str(eldatetime), pattern)))
                linkkey = md5.new(el.link).hexdigest()
                allitem[linkkey] = {}
                allitem[linkkey]['link'] = str(el.link)
                allitem[linkkey]['epoch'] = int(elepoch)
                allitem[linkkey]['updated'] = el.updated
                allitem[linkkey]['title'] = el.title

 

itemlist = []

for something in allitem.keys():
        epochkeytuple = (allitem[something]['epoch'],something)
        itemlist.append (epochkeytuple)

itemlist.sort()
itemlist.reverse()

RenderMerge(itemlist,options.output)