# -*- coding: utf-8 -*-
"""
    MoinMoin - Browse Wiki event-log for page requests.

    The macro also tries to resolve host names, if not found then host IP is given

    Usage:
        <<WikiLog(yyyy, mm, dd)>>

        where yyyy, mm, dd - date from which to start showing logs
        if no arguments given then showing for the last month

    @copyright: 2007-2008 by Alexander "Loki" Agibalov
    @license: GNU GPL, see COPYING for details.

    changes:
        12.2007 - conversion to new syntax by Bolesław Kulbabiński
        11.2008 - fixed bug with hostname resolution (Alexander Agibalov)
"""

import os, socket
from MoinMoin.Page import Page
from MoinMoin.logfile import eventlog
from MoinMoin import wikiutil
from datetime import datetime

def macro_WikiLog(macro, year=int, month=int, day=int):

    request = macro.request
    _ = macro.request.getText
    if not request.user.isSuperUser():
        return request.formatter.text('<<WikiLog: Only a SuperUser can view this page!>>')

    if year is None or month is None or day is None:
        dNow0 = datetime.now()
        if dNow0.month > 1:
            sargs = (dNow0.year, dNow0.month - 1, dNow0.day)
        else:
            sargs = (dNow0.year - 1, 12, dNow0.day)
        retTxt = "<p><b>Page visits for the last month</b></p>"
    else:
        retTxt = "<p><b>Page visits since %i-%i-%i</b></p>" % (year, month, day)
        sargs = [year, month, day]

    event_log = eventlog.EventLog(request)
    try:
        logDate = event_log.date()
    except logfile.LogMissing:
        return request.formatter.text('<<WikiLog: Event log not found!>>')

    event_log.set_filter(['VIEWPAGE'])
    sRet = retTxt
    sRet += "<table><tr><td>Date</td><td>Page</td><td>Host or IP</td><tr>"
    dHosts = {}
    for event in event_log.reverse():
        date_tup = request.user.getTime(wikiutil.version2timestamp(event[0]))
        if int(date_tup[0]) < int(sargs[0]):
            break
        if (int(date_tup[0]) == int(sargs[0])) and (int(date_tup[1]) < int(sargs[1])):
            break
        if (int(date_tup[0]) == int(sargs[0])) and (int(date_tup[1]) == int(sargs[1])) and (int(date_tup[2]) <= int(sargs[2])):
            break

        sHost = str(event[2].get('REMOTE_ADDR', None))
        if not dHosts.has_key(sHost):
            try:
                lHost = socket.gethostbyaddr(sHost)
                dHosts[sHost] = lHost[0]
            except:
                dHosts[sHost] = sHost

        sHost = dHosts[sHost]
        tmpSt = "<tr><td>%s</td><td>%s</td><td>%s</td></tr>" % (request.user.getFormattedDateTime(wikiutil.version2timestamp(event[0])),
                 event[2].get('pagename', None),
                 sHost)
        sRet += tmpSt
    sRet += "</table>"
    return macro.formatter.rawHTML(sRet)


def execute(macro, args):
    try:
        return wikiutil.invoke_extension_function(
                   macro.request, macro_WikiLog,
                   args, [macro])
    except ValueError, err:
        return macro.request.formatter.text(
                   "<<WikiLog: %s>>" % err.args[0])