"""nnthread.py - various threading goodies."""

# meoWWW
# Copyright 1999 G.J. Andruk
# 
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or (at
# your option) any later version.                                      
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU  
# General Public License for more details.                  
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

import string, mimify

class Threader:

    def __init__(self, server, novlist):
        self.novlist = novlist
        self.artlist = {}
        for item in range(len(self.novlist)):
            # self.artlist {msgid:[item, hasmom, kids, kidnums], ...}
            self.artlist[self.novlist[item][4]] = [item, 0, [], []]
        for item in self.artlist.keys():
            for ref in range(len(self.novlist[self.artlist[item][0]][5]) -1,
                             -1, -1):
                reftry = self.novlist[self.artlist[item][0]][5][ref]
                if self.artlist.has_key(reftry):
                    self.artlist[item][1] = 1             # I have a mom!
                    self.artlist[reftry][2].append(item)  # Tell mom
                    break

        itemlist = self.artlist.keys()
        itemlist.sort()
        subjlist = []
        for item in itemlist:
            if self.artlist[item][1] == 0:
                subjline = string.lower(mimify.mime_decode_header(
                    self.novlist[self.artlist[item][0]][1]))
                if string.lower(subjline[0:3]) ==  're:':
                    subjline=string.lstrip(subjline[3:])
                subjlist.append((subjline, item))
        subjlist.sort()
        self.arttable = []
        for item in subjlist:
            self.dumptitle(self.artlist[item[1]],
                           '', self.novlist[self.artlist[item[1]][0]])
            self.artlist[item[1]][3] = self.subthread(
                self.artlist[item[1]][2], '', self.artlist[item[1]][3])
    def subthread(self, kidlist, lvl, kidarray):
        kidmax = len(kidlist) - 1
        for kid in range(len(kidlist)):
            if kid == len(kidlist) - 1:
                newlvl = '`-'
            elif (kid == 0) or kidmax:
                newlvl = '|-'
            else:
                newlvl = '| '
            self.dumptitle(self.artlist[kidlist[kid]],
                           lvl + newlvl,
                           self.novlist[self.artlist[kidlist[kid]][0]])
            kidarray.append(
                str(self.novlist[self.artlist[kidlist[kid]][0]][0]))
            if kid == kidmax:
                newlvl = '  '
            else:
                newlvl = '| '
            kidarray = self.subthread(self.artlist[kidlist[kid]][2],
                                      lvl + newlvl,
                                      kidarray)
        return kidarray

    def dumptitle(self, artitm, ldr, novitm):
        import rfc822, time
        ldr = ldr[:30]
        addy = rfc822.parseaddr(novitm[2])  # FIXME: this is very slow
        try:
            bytecnt = float(novitm[6]) / 1024.
        except:
            bytecnt = 0
        #artitm[2] == haskids
        self.arttable.append((novitm[0], artitm, len(ldr)/2, 
             (bytecnt, ldr, novitm[1],
              (addy[0] or addy[1] or '???'), novitm[4])))