Limnoria/plugins/Ebay.py

###
# Copyright (c) 2003-2004, James Vega
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"""
Accesses eBay.com for various things
"""

import supybot

__revision__ = "$Id$"
__author__ = supybot.authors.jamessan

import re
import cgi
import sets
import getopt

import supybot.conf as conf
import supybot.utils as utils
from supybot.commands import wrap
import supybot.plugins as plugins
import supybot.ircutils as ircutils
import supybot.privmsgs as privmsgs
import supybot.registry as registry
import supybot.webutils as webutils
import supybot.callbacks as callbacks


def configure(advanced):
    from supybot.questions import output, expect, anything, something, yn
    conf.registerPlugin('Ebay', True)
    output("""The Ebay plugin has the functionality to watch for URLs
              that match a specific pattern (we call this a snarfer). When
              Supybot sees such a URL, he will parse the web page for
              information and reply with the results.""")
    if yn('Do you want the Ebay snarfer enabled by default?'):
        conf.supybot.plugins.Ebay.auctionSnarfer.setValue(True)

class EbayError(Exception):
    pass

conf.registerPlugin('Ebay')
conf.registerChannelValue(conf.supybot.plugins.Ebay, 'auctionSnarfer',
    registry.Boolean(False, """Determines whether the bot will automatically
    'snarf' Ebay auction URLs and print information about them."""))

class Ebay(callbacks.PrivmsgCommandAndRegexp):
    """
    Module for eBay stuff. Currently contains a URL snarfer and a command to
    get info about an auction.
    """
    threaded = True
    callBefore = ['URL']
    regexps = ['ebaySnarfer']

    _reopts = re.I | re.S
    _invalid = re.compile(r'(is invalid, still pending, or no longer in our '
                          r'database)', _reopts)
    _info = re.compile(r'<title>eBay item (\d+) \([^)]+\) - ([^<]+)</title>',
                       _reopts)

    _bid = re.compile(r'((?:Current|Starting) bid):.+?<b>([^<]+?)<fo', _reopts)
    _winningBid = re.compile(r'(Winning bid|Sold for):.+?<b>([^<]+?)<font',
                             _reopts)
    _time = re.compile(r'(Time left):.+?<b>([^<]+?)</b>', _reopts)
    _bidder = re.compile(r'(High bidder):.+?(?:">(User ID) (kept private)'
                         r'</font>|<a href[^>]+>([^<]+)</a>.+?'
                         r'<a href[^>]+>(\d+)</a>)', _reopts)
    _winningBidder = re.compile(r'(Winning bidder|Buyer):.+?<a href[^>]+>'
                               r'([^<]+)</a>.+?<a href[^>]+>(\d+)</a>',_reopts)
    _buyNow = re.compile(r'alt="(Buy It Now)">.*?<b>([^<]+)</b>', _reopts)
    _seller = re.compile(r'(Seller information).+?<a href[^>]+>([^<]+)</a>'
                         r'.+ViewFeedback.+">(\d+)</a>', _reopts)
    _searches = (_bid, _winningBid, _time, _bidder,
                 _winningBidder, _buyNow, _seller)
    _multiField = (_bidder, _winningBidder, _seller)

    def auction(self, irc, msg, args):
        """<item>

        Return useful information about the eBay auction with item number
        <item>.
        """
        item = privmsgs.getArgs(args)
        if not item.isdigit():
            irc.error('<item> must be an integer value.')
            return
        url = 'http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=%s' % item
        try:
            irc.reply('%s <%s>' % (self._getResponse(url), url))
        except EbayError, e:
            irc.reply(str(e))

    def ebaySnarfer(self, irc, msg, match):
        r'http://cgi\.ebay\.(?:com(?:\.au)?|co\.uk|ca)/.*' \
        r'eBayISAPI\.dll\?ViewItem&([\S]+)'
        if not self.registryValue('auctionSnarfer', msg.args[0]):
            return
        queries = cgi.parse_qs(match.group(1))
        if 'item' not in queries and 'category' not in queries:
            return
        url = match.group(0)
        try:
            irc.reply(self._getResponse(url), prefixName=False)
        except EbayError, e:
            self.log.info('ebaySnarfer exception at %s: %s', url, str(e))
    ebaySnarfer = wrap(ebaySnarfer, decorators=['urlSnarfer'])

    def _getResponse(self, url):
        try:
            s = webutils.getUrl(url)
        except webutils.WebError, e:
            raise EbayError, str(e)
        resp = []
        m = self._invalid.search(s)
        if m:
            raise EbayError, 'That auction %s' % m.group(1)
        m = self._info.search(s)
        if m:
            (num, desc) = m.groups()
            resp.append('%s%s: %s' % (ircutils.bold('Item #'),
                                      ircutils.bold(num),
                                      utils.htmlToText(desc)))
        def bold(L):
            return (ircutils.bold(L[0]),) + L[1:]
        for r in self._searches:
            m = r.search(s)
            if m:
                if r in self._multiField:
                    # Have to filter the results from self._bidder since
                    # 2 of the 5 items in its tuple will always be None.
                    #self.log.warning(m.groups())
                    matches = filter(None, m.groups())
                    resp.append('%s: %s (%s)' % bold(matches))
                else:
                    resp.append('%s: %s' % bold(m.groups()))
        if resp:
            return '; '.join(resp)
        else:
            raise EbayError, 'That doesn\'t appear to be a proper eBay ' \
                             'auction page.  (%s)' % \
                             conf.supybot.replies.possibleBug()

Class = Ebay

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