# -*- coding: iso-8859-1 -*-
"""
    MoinMoin - RenamePage action

    This action allows you to rename a page.

    @copyright: 2002-2004 Michael Reinsch <mr@uue.org>,
                2006-2007 MoinMoin:ThomasWaldmann,
                2007 MoinMoin:ReimarBauer
    @license: GNU GPL, see COPYING for details.
"""
import re
from MoinMoin import wikiutil
from MoinMoin.Page import Page
from MoinMoin.PageEditor import PageEditor
from MoinMoin.action import ActionBase

class RenamePage(ActionBase):
    """ Rename page action

    Note: the action name is the class name
    """
    def __init__(self, pagename, request):
        ActionBase.__init__(self, pagename, request)
        self.use_ticket = True
        _ = self._
        self.form_trigger = 'rename'
        self.form_trigger_label = _('Rename Page')
        filterfn = re.compile(ur"^%s/.*$" % re.escape(pagename), re.U).match
        subpagenames = request.rootpage.getPageList(user='', exists=1, filter=filterfn)
        self.subpages = [pagename for pagename in subpagenames if self.request.user.may.delete(pagename)]
        try:
            self.show_redirect = request.cfg.show_rename_redirect
        except AttributeError:
            self.show_redirect = False
        try:
            self.rename_redirect = int(self.request.form.get('rename_redirect', '0'))
        except ValueError:
            self.rename_redirect = 0

    def is_allowed(self):
        may = self.request.user.may
        return may.write(self.pagename) and may.delete(self.pagename)

    def check_condition(self):
        _ = self._
        if not self.page.exists():
            return _('This page is already deleted or was never created!')
        else:
            return None

    def do_action(self):
        """ Rename this page to "pagename" """
        _ = self._
        form = self.form
        newpagename = form.get('newpagename', u'')
        newpagename = wikiutil.normalize_pagename(newpagename, self.cfg)
        comment = form.get('comment', u'')
        comment = wikiutil.clean_input(comment)
        try:
            rename_subpages = int(self.request.form.get('rename_subpages', '0'))
        except ValueError:
            rename_subpages = 0

        self.page = PageEditor(self.request, self.pagename)
        success, msgs = self.page.renamePage(newpagename, comment)

        if not success:
            return success, msgs

        msgs = [msgs]

        if self.show_redirect and self.rename_redirect:
            self.page = PageEditor(self.request, self.pagename)
            self.page.saveText('#redirect %s' % newpagename, 0)

        if rename_subpages and self.subpages:
            for name in self.subpages:
                self.page = PageEditor(self.request, name)
                new_subpagename = name.replace(self.pagename, newpagename, 1)
                success_i, msg = self.page.renamePage(new_subpagename, comment)
                msgs.append(msg)

                if self.show_redirect and self.rename_redirect and success_i:
                    self.page = PageEditor(self.request, name)
                    self.page.saveText('#redirect %s' % new_subpagename, 0)
            msgs = ' '.join([msg for msg in msgs if msg])

        self.newpagename = newpagename # keep there for finish
        return success, msgs

    def do_action_finish(self, success):
        if success:
            url = Page(self.request, self.newpagename).url(self.request)
            self.request.http_redirect(url, code=301)
        else:
            self.render_msg(self.make_form(), "dialog")

    def get_form_html(self, buttons_html):
        _ = self._

        if self.subpages:
            redirect_label = _('Create redirect for renamed page(s)?')

            subpages = ' '.join([wikiutil.escape(page) for page in self.subpages])
            subpages_html = """
                <tr>
                <dd>
                    %(subpage_label)s<input type="checkbox" name="rename_subpages" value="1" %(subpages_checked)s>
                </dd>
                <dd>
                    <class="label"><subpage> %(subpage)s</subpage>
                </dd>
                </tr>
                """ % {
                    'subpage': subpages,
                    'subpages_checked': ('', 'checked')[self.request.args.get('subpages_checked', '0') == '1'],
                    'subpage_label': _('Rename all /subpages too?'),
                 }
        else:
            redirect_label = _('Create redirect for renamed page?')
            subpages_html = ""

        if self.show_redirect:
            redirect_html = '<tr><dd>%(redirect_label)s<input type="checkbox" name="rename_redirect" value="1" %(redirect)s></dd></tr>' % {
                'redirect': self.rename_redirect,
                'redirect_label': redirect_label,
            }
        else:
            redirect_html = ''

        if self.show_redirect or self.subpages:
            options_html = """
                <table>
                    %(subpages_html)s
                    %(redirect_html)s
                </table>
                """ % {
                    "subpages_html": subpages_html,
                    "redirect_html": redirect_html,
                }
        else:
            options_html = ""

        d = {
            'querytext': _('Really rename this page?'),
            'pagename': wikiutil.escape(self.pagename, True),
            'newname_label': _("New name"),
            'comment_label': _("Optional reason for the renaming"),
            'buttons_html': buttons_html,
            'options_html': options_html,
            }

        return '''
<strong>%(querytext)s</strong>
<br>
<br>
%(options_html)s
<table>
    <tr>
        <td class="label"><label>%(newname_label)s</label></td>
        <td class="content">
            <input type="text" name="newpagename" value="%(pagename)s" size="80">
        </td>
    </tr>
    <tr>
        <td class="label"><label>%(comment_label)s</label></td>
        <td class="content">
            <input type="text" name="comment" size="80" maxlength="200">
        </td>
    </tr>
    <tr>
        <td></td>
        <td class="buttons">
            %(buttons_html)s
        </td>
    </tr>
</table>
''' % d

def execute(pagename, request):
    """ Glue code for actions """
    RenamePage(pagename, request).render()