import time, urllib

from MoinMoin.logfile import editlog
from MoinMoin.util.dataset import TupleDataset, Column
from MoinMoin.widget.browser import DataBrowserWidget
from MoinMoin import wikiutil, Page, PageEditor
from MoinMoin.macro import RecentChanges
from MoinMoin.formatter.text_html import Formatter

def show_editors(request, pagename, timestamp):
    _ =  request.getText
    
    timestamp = int(timestamp * 1000000)
    log = editlog.EditLog(request)
    editors = {}
    pages = {}
    for line in log.reverse():
        if line.ed_time_usecs < timestamp:
            break
        
        if not request.user.may.read(line.pagename):
            continue
        
        editor = line.getEditor(request)
        if not pages.has_key(line.pagename):
            pages[line.pagename] = 1
            editors[editor] = editors.get(editor, 0) + 1
            
    editors = [(nr, editor) for editor, nr in editors.iteritems()]
    editors.sort()

    pg = Page.Page(request, pagename)

    dataset = TupleDataset()
    dataset.columns = [Column('editor', label=_("Editor"), align='left'),
                       Column('pages', label=_("Pages"), align='right'),
                       Column('link', label='', align='left')]
    for nr, editor in editors:
        dataset.addRow((editor, unicode(nr), pg.link_to(request, text=_("Select Author"), querystr="action=Despam&editor=%s" % urllib.quote_plus(editor))))
    
    table = DataBrowserWidget(request)
    table.setData(dataset)
    table.render()

class tmp:
    pass

def show_pages(request, pagename, editor, timestamp):
    _ =  request.getText
    
    timestamp = int(timestamp * 1000000)
    log = editlog.EditLog(request)
    lines = []
    pages = {}
    #  mimic macro object for use of RecentChanges subfunctions
    macro = tmp()
    macro.request = request
    macro.formatter = Formatter(request)

    request.write("<p>")
    for line in log.reverse():
        if line.ed_time_usecs < timestamp:
            break
        
        if not request.user.may.read(line.pagename):
            continue
        
        
        if not pages.has_key(line.pagename):
            pages[line.pagename] = 1
            if line.getEditor(request)==editor:
                request.write(RecentChanges.format_page_edits(macro, [line], timestamp))

    request.write(
'''
</p>
<p>
<form method="post" action="%s/%s">
<input type="hidden" name="action" value="Despam">
<input type="hidden" name="editor" value="%s">
<input type="submit" name="ok" value="%s">
</form>
</p>
''' % (request.getScriptname(),
       wikiutil.quoteWikinameURL(pagename),
       urllib.quote(editor),
       _("Revert all!")))

def revert_page(request, pagename, editor):
    if not request.user.may.revert(pagename):
        return 

    log = editlog.EditLog(request, rootpagename=pagename)

    first = True
    rev = u"00000000"
    for line in log.reverse():
        if first:
            first = False
            if line.getEditor(request) != editor:
                return
        else:
            if line.getEditor(request) != editor:
                rev = line.rev
                break
    oldpg = Page.Page(request, pagename, rev=int(rev))
    pg = PageEditor.PageEditor(request, pagename)
    try:
        savemsg = pg.saveText(oldpg.get_raw_body(), 0, extra=rev,
                              action="SAVE/REVERT")
    except pg.SaveError, msg:
        # msg contain a unicode string
        savemsg = unicode(msg)
    return savemsg
    
def revert_pages(request, editor, timestamp):
    _ =  request.getText

    editor = urllib.unquote(editor)
    timestamp = int(timestamp * 1000000)
    log = editlog.EditLog(request)
    pages = {}
    messages = []
    for line in log.reverse():
        if line.ed_time_usecs < timestamp:
            break

        if not request.user.may.read(line.pagename):
            continue


        if not pages.has_key(line.pagename):
            pages[line.pagename] = 1
            if line.getEditor(request) == editor:
                msg = revert_page(request, line.pagename, editor)
                if msg:
                    request.write("<p>%s: %s</p>" % (
                        Page.Page(request, line.pagename).link_to(request),
                        msg))

def execute(pagename, request):
    editor = request.form.get('editor', [None])[0]
    timestamp = time.time() - 24 * 3600
       # request.form.get('timestamp', [None])[0]
    ok = request.form.get('ok', [0])[0]

    wikiutil.send_title(request, "Despam", pagename=pagename)    
    # Start content (important for RTL support)
    request.write(request.formatter.startContent("content"))
    
    if ok:
        revert_pages(request, editor, timestamp)
    elif editor:
        show_pages(request, pagename, editor, timestamp)
    else:
        show_editors(request, pagename, timestamp)

    # End content and send footer
    request.write(request.formatter.endContent())
    wikiutil.send_footer(request, pagename, editable=0, showactions=0,
                         form=request.form)