#!/usr/bin/env python3
"""
With this tool you can add the template {{commonscat}} to categories.

The tool works by following the interwiki links. If the template is present on
another language page, the bot will use it.

You could probably use it at articles as well, but this isn't tested.

The following parameters are supported:

-checkcurrent     Work on all category pages that use the primary commonscat
                  template.

This script is a :py:obj:`ConfigParserBot <bot.ConfigParserBot>`.
The following options can be set within a settings file which is scripts.ini
by default::

-always           Don't prompt you for each replacement. Warning message
                  has not to be confirmed. ATTENTION: Use this with care!

-summary:XYZ      Set the action summary message for the edit to XYZ,
                  otherwise it uses messages from add_text.py as default.

This bot uses pagegenerators to get a list of pages. The following options are
supported:

&params;

For example to go through all categories:

    python pwb.py commonscat -start:Category:!
"""
# Commonscat bot:
#
# Take a page. Follow the interwiki's and look for the commonscat template
# *Found zero templates. Done.
# *Found one template. Add this template
# *Found more templates. Ask the user <- still have to implement this
#
# (C) Pywikibot team, 2008-2023
#
# Distributed under the terms of the MIT license.
#
import re

import pywikibot
from pywikibot import i18n, pagegenerators
from pywikibot.bot import ConfigParserBot, ExistingPageBot
from pywikibot.exceptions import InvalidTitleError
from pywikibot.textlib import add_text


docuReplacements = {
    '&params;': pagegenerators.parameterHelp
}

# Wikibase property containing the Wikibase category
wikibase_property = {
    'wikidata:wikidata': 'P373',
}

# Primary template, list of alternatives
# No entry needed if it is like _default
commonscatTemplates = {
    '_default': ('Commonscat', []),
    'af': ('CommonsKategorie', ['commonscat']),
    'an': ('Commonscat', ['Commons cat']),
    'ar': ('تصنيف كومنز',
           ['Commonscat', 'تصنيف كومونز', 'Commons cat', 'Commons category',
            'تك', 'Commonscategory', 'Category commons']),
    'ary': ('Commons category',
            ['Commoncat', 'تصنيف كومنز', 'Commons cat', 'Commonscategory',
             'Category commons']),
    'arz': ('تصنيف كومونز',
            ['تصنيف كومنز', 'Commoncat', 'Commons category', 'Commons cat',
             'Commonscategory', 'Category commons']),
    'az': ('CommonsKat', ['Commonscat']),
    'bn': ('কমন্সক্যাট', ['Commonscat']),
    'ca': ('Commonscat', ['Commons cat', 'Commons category']),
    'ckb': ('پۆلی کۆمنز', ['Commonscat', 'Commons cat', 'Commons category']),
    'crh': ('CommonsKat', ['Commonscat']),
    'cs': ('Commonscat', ['Commons cat']),
    'da': ('Commonscat',
           ['Commons cat', 'Commons category', 'Commonscat left',
            'Commonscat2']),
    'en': ('Commons category',
           ['Commoncat', 'Commonscat', 'Commons cat', 'Commons+cat',
            'Commonscategory', 'Commons and category', 'Commonscat-inline',
            'Commons category-inline', 'Commons2', 'Commons category multi',
            'Cms-catlist-up', 'Catlst commons', 'Commonscat show2',
            'Sister project links']),
    'es': ('Commonscat',
           ['Ccat', 'Commons cat', 'Categoría Commons',
            'Commonscat-inline']),
    'et': ('Commonsi kategooria',
           ['Commonscat', 'Commonskat', 'Commons cat', 'Commons category']),
    'eu': ('Commonskat', ['Commonscat']),
    'fa': ('ویکی‌انبار-رده',
           ['Commonscat', 'Commons cat', 'انبار رده', 'Commons category',
            'انبار-رده', 'جعبه پیوند به پروژه‌های خواهر',
            'در پروژه‌های خواهر', 'پروژه‌های خواهر']),
    'fr': ('Commonscat', ['CommonsCat', 'Commons cat', 'Commons category']),
    'frp': ('Commonscat', ['CommonsCat']),
    'ga': ('Catcómhaoin', ['Commonscat']),
    'he': ('ויקישיתוף בשורה', []),
    'hi': ('Commonscat', ['Commons2', 'Commons cat', 'Commons category']),
    'hu': ('Commonskat', ['Közvagyonkat']),
    'hy': ('Վիքիպահեստ կատեգորիա',
           ['Commonscat', 'Commons cat', 'Commons category']),
    'id': ('Commonscat',
           ['Commons cat', 'Commons2', 'CommonsCat', 'Commons category']),
    'is': ('CommonsCat', ['Commonscat']),
    'ja': ('Commonscat', ['Commons cat', 'Commons category']),
    'jv': ('Commonscat', ['Commons cat']),
    'kaa': ('Commons cat', ['Commonscat']),
    'kk': ('Commonscat', ['Commons2']),
    'ko': ('Commonscat', ['Commons cat', '공용분류']),
    'la': ('CommuniaCat', []),
    'mk': ('Ризница-врска',
           ['Commonscat', 'Commons cat', 'CommonsCat', 'Commons2',
            'Commons category']),
    'ml': ('Commonscat', ['Commons cat', 'Commons2']),
    'ms': ('Kategori Commons', ['Commonscat', 'Commons category']),
    'ne': ('कमन्सश्रेणी', ['Commonscat']),
    'nn': ('Commonscat', ['Commons cat']),
    'os': ('Commonscat', ['Commons cat']),
    'pt': ('Commonscat', ['Commons cat']),
    'ro': ('Commonscat', ['Commons cat']),
    'ru': ('Commonscat', ['Викисклад-кат', 'Commons category']),
    'sco': ('Commons category', ['Commonscat', 'Commons cat']),
    'simple': ('Commonscat',
               ['Commons cat', 'Commons cat multi', 'Commons category',
                'Commons category multi', 'CommonsCompact',
                'Commons-inline']),
    'sh': ('Commonscat', ['Commons cat']),
    'sl': ('Kategorija v Zbirki',
           ['Commonscat', 'Kategorija v zbirki', 'Commons cat',
            'Katzbirke']),
    'sr': ('Commons category',
           ['Commonscat', 'Commons cat', 'Категорија на Остави']),
    'sq': ('Commonscat', ['Commonskat', 'Commonsart', 'CommonsCat']),
    'sv': ('Commonscat',
           ['Commonscat-rad', 'Commonskat', 'Commons cat', 'Commonscatbox',
            'Commonscat-box']),
    'sw': ('Commonscat', ['Commons2', 'Commons cat']),
    'te': ('Commonscat', ['Commons cat']),
    'tr': ('Commons kategori',
           ['CommonsKat', 'Commonscat', 'Commons cat']),
    'uk': ('Commonscat', ['Commons cat', 'Category', 'Commonscat-inline']),
    'ur': ('زمرہ کومنز',
           ['Commonscat', 'زمرہ العام', 'Commons cat', 'CommonsCat']),
    'vi': ('Commonscat',
           ['Commons2', 'Commons cat', 'Commons category', 'Commons+cat']),
    'yi': ('קאמאנסקאט', ['Commonscat']),
    'zh': ('Commonscat', ['Commons cat', 'Commons category']),
    'zh-classical': ('共享類', ['Commonscat']),
    'zh-yue': ('同享類',
               ['Commonscat', '共享類 ', 'Commons cat', 'Commons category']),
}

ignoreTemplates = {
    'af': ['commons'],
    'ar': ['تحويل تصنيف', 'نقل تصنيف', 'تحويلة تصنيف', 'Category redirect',
           'تحويل التصنيف', 'تصانيف كومنز متعددة', 'تكم', 'روابط شقيقة',
           'Sisterlinks', 'وصلات شقيقة', 'Sister project links'],
    'ary': ['Category redirect'],
    'arz': ['تحويل تصنيف', 'Category redirect', 'روابط شقيقة',
            'Sisterlinks', 'Sister project links'],
    'be-tarask': ['Commons', 'Commons category'],
    'cs': ['Commons', 'Sestřičky', 'Sisterlinks'],
    'da': ['Commons', 'Commons left', 'Commons2', 'Commonsbilleder',
           'Commonskat', 'Commonscat2', 'GalleriCommons', 'Søsterlinks'],
    'de': ['Commons', 'ZhSZV', 'Bauwerk-stil-kategorien',
           'Bauwerk-funktion-kategorien', 'KsPuB',
           'Kategoriesystem Augsburg-Infoleiste',
           'Kategorie Ge', 'Kategorie v. Chr. Ge',
           'Kategorie Geboren nach Jh. v. Chr.', 'Kategorie Geboren nach Jh.',
           '!Kategorie Gestorben nach Jh. v. Chr.',
           '!Kategorie Gestorben nach Jh.',
           'Kategorie Jahr', 'Kategorie Jahr v. Chr.',
           'Kategorie Jahrzehnt', 'Kategorie Jahrzehnt v. Chr.',
           'Kategorie Jahrhundert', 'Kategorie Jahrhundert v. Chr.',
           'Kategorie Jahrtausend', 'Kategorie Jahrtausend v. Chr.'],
    'en': ['Category redirect', 'Commons', 'Commoncats',
           'Sisterlinks', 'Sister project links',
           'Tracking category', 'Template category', 'Wikipedia category'],
    'eo': ['Commons',
           ('Projekto/box', 'commons='),
           ('Projekto', 'commons='),
           ('Projektoj', 'commons='),
           ('Projektoj', 'commonscat=')],
    'es': ['Commons', 'IprCommonscat'],
    'eu': ['Commons'],
    'fa': ['Commons', 'ویکی‌انبار', 'Category redirect', 'رده بهتر',
           'جعبه پیوند به پروژه‌های خواهر', 'در پروژه‌های خواهر',
           'پروژه‌های خواهر'],
    'fi': ['Commonscat-rivi', 'Commons-rivi', 'Commons'],
    'fr': ['Commons', 'Commons-inline', ('Autres projets', 'commons=')],
    'fy': ['Commons', 'CommonsLyts'],
    'he': ['מיזמים'],
    'hr': ['Commons', ('WProjekti', 'commonscat=')],
    'is': ['Systurverkefni', 'Commons'],
    'it': [('Ip', 'commons='), ('Interprogetto', 'commons=')],
    'ja': ['CommonscatS', 'SisterlinksN', 'Interwikicat'],
    'ms': ['Commons', 'Sisterlinks', 'Commons cat show2'],
    'nds-nl': ['Commons'],
    'nl': ['Commons', 'Commonsklein', 'Commonscatklein', 'Catbeg',
           'Catsjab', 'Catwiki'],
    'om': ['Commons'],
    'pt': ['Correlatos',
           'Commons',
           'Commons cat multi',
           'Commons1',
           'Commons2'],
    'simple': ['Sisterlinks'],
    'ru': ['Навигация', 'Навигация для категорий', 'КПР', 'КБР',
           'Годы в России', 'commonscat-inline'],
    'tt': ['Навигация'],
    'zh': ['Category redirect', 'cr', 'Commons',
           'Sisterlinks', 'Sisterlinkswp',
           'Tracking category', 'Trackingcatu',
           'Template category', 'Wikipedia category',
           '分类重定向', '追蹤分類', '共享資源', '追蹤分類'],
}


class CommonscatBot(ConfigParserBot, ExistingPageBot):

    """Commons categorisation bot.

    .. versionchanged:: 7.0
       CommonscatBot is a ConfigParserBot
    """

    use_disambigs = False
    use_redirects = False
    update_options = {'summary': ''}

    def skip_page(self, page):
        """Skip category redirects."""
        if page.isCategoryRedirect():
            pywikibot.warning(
                'Page {page} on {page.site} is a category redirect. '
                'Skipping.'.format(page=page))
            return True
        return super().skip_page(page)

    @staticmethod
    def skipPage(page) -> bool:
        """Determine if the page should be skipped."""
        try:
            templates_to_ignore = ignoreTemplates[page.site.code]
        except KeyError:
            return False

        for template in templates_to_ignore:
            if not isinstance(template, tuple):
                for pageTemplate in page.templates():
                    if pageTemplate.title(with_ns=False) == template:
                        return True
            else:
                for (inPageTemplate, param) in page.templatesWithParams():
                    if inPageTemplate.title(with_ns=False) == template[0] \
                       and template[1] in param[0].replace(' ', ''):
                        return True
        return False

    def treat_page(self) -> None:
        """
        Add CommonsCat template to page.

        Take a page. Go to all the interwiki page looking for a commonscat
        template. When all the interwiki's links are checked and a proper
        category is found add it to the page.
        """
        page = self.current_page
        # Get the right templates for this page
        primaryCommonscat, _alternatives = i18n.translate(
            page.site.code, commonscatTemplates,
            fallback=i18n.DEFAULT_FALLBACK)

        commonscatLink = self.getCommonscatLink(page)
        if commonscatLink:
            pywikibot.info('Commonscat template is already on ' + page.title())
            (currentCommonscatTemplate,
             currentCommonscatTarget, LinkText, _note) = commonscatLink
            checkedCommonscatTarget = self.checkCommonscatLink(
                currentCommonscatTarget)

            if currentCommonscatTarget == checkedCommonscatTarget:
                # The current commonscat link is good
                pywikibot.info('Commonscat link at {} to Category:{} is ok'
                               .format(page.title(), currentCommonscatTarget))
                return

            if checkedCommonscatTarget:
                # We have a new Commonscat link, replace the old one
                self.changeCommonscat(page, currentCommonscatTemplate,
                                      currentCommonscatTarget,
                                      primaryCommonscat,
                                      checkedCommonscatTarget, LinkText)
                return

            # Commonscat link is wrong
            commonscatLink = self.find_commons_category(page)
            if commonscatLink:
                self.changeCommonscat(page, currentCommonscatTemplate,
                                      currentCommonscatTarget,
                                      primaryCommonscat, commonscatLink)
            # TODO: if the commonsLink == '', should it be removed?

        elif self.skipPage(page):
            pywikibot.info(
                'Found a template in the skip list. Skipping ' + page.title())
        else:
            commonscatLink = self.find_commons_category(page)
            if commonscatLink:
                if commonscatLink == page.title():
                    text_to_add = f'{{{{{primaryCommonscat}}}}}'
                else:
                    text_to_add = (
                        f'{{{{{primaryCommonscat}|{commonscatLink}}}}}')
                summary = self.opt.summary or i18n.twtranslate(
                    page.site, 'add_text-adding', {'adding': text_to_add})
                self.put_current(add_text(page.text, text_to_add),
                                 summary=summary)

    def changeCommonscat(
        self,
        page=None,
        oldtemplate: str = '',
        oldcat: str = '',
        newtemplate: str = '',
        newcat: str = '',
        linktitle: str = ''
    ) -> None:
        """Change the current commonscat template and target."""
        if '3=S' in (oldcat, linktitle):
            return  # TODO: handle additional param on de-wiki

        if not linktitle and (page.title().lower() in oldcat.lower()
                              or oldcat.lower() in page.title().lower()):
            linktitle = oldcat

        if linktitle and newcat != page.title(with_ns=False):
            newtext = re.sub(r'(?i)\{\{%s\|?[^{}]*(?:\{\{.*\}\})?\}\}'
                             % oldtemplate,
                             f'{{{{{newtemplate}|{newcat}|{linktitle}}}}}',
                             page.get())
        elif newcat == page.title(with_ns=False):
            newtext = re.sub(r'(?i)\{\{%s\|?[^{}]*(?:\{\{.*\}\})?\}\}'
                             % oldtemplate,
                             '{{%s}}' % newtemplate,
                             page.get())
        elif oldcat.strip() != newcat:  # strip trailing white space
            newtext = re.sub(r'(?i)\{\{%s\|?[^{}]*(?:\{\{.*\}\})?\}\}'
                             % oldtemplate,
                             f'{{{{{newtemplate}|{newcat}}}}}',
                             page.get())
        else:  # nothing left to do
            return

        comment = self.opt.summary or i18n.twtranslate(
            page.site, 'commonscat-msg_change', {'oldcat': oldcat,
                                                 'newcat': newcat})

        self.userPut(page, page.text, newtext, summary=comment,
                     ignore_save_related_errors=True)

    def findCommonscatLink(self, page) -> str:
        """Find CommonsCat template on interwiki pages.

        :return: name of a valid commons category
        """
        for ipageLink in page.langlinks():
            ipage = pywikibot.page.Page(ipageLink)
            pywikibot.log('Looking for template on ' + ipage.title())
            try:  # T291783
                ipage_exists = ipage.exists()
            except InvalidTitleError as e:
                pywikibot.error(e)
                continue

            if (not ipage_exists or ipage.isRedirectPage()
                    or ipage.isDisambig()):
                continue

            commonscatLink = self.getCommonscatLink(ipage)
            if not commonscatLink:
                continue

            checkedCommonscat = self.checkCommonscatLink(commonscatLink[1])
            if checkedCommonscat:
                pywikibot.info(
                    'Found link for {} at [[{}:{}]] to {}.'
                    .format(page.title(), ipage.site.code, ipage.title(),
                            checkedCommonscat))
                return checkedCommonscat
        return ''

    def find_commons_category(self, page) -> str:
        """Find CommonsCat template on Wikibase repository.

        Use Wikibase property to get the category if possible.
        Otherwise check all langlinks to find it.

        :return: name of a valid commons category
        """
        data_repo = page.site.data_repository()
        cat_property = wikibase_property.get(data_repo.sitename)
        if cat_property:
            claim = page.get_best_claim(cat_property)
            if claim:
                category = claim.getTarget()
                if category:
                    return category

        # fallback to interwiki pages
        return self.findCommonscatLink(page)

    @staticmethod
    def getCommonscatLink(page):  # noqa: N802
        """Find CommonsCat template on page.

        :rtype: tuple of (<templatename>, <target>, <linktext>, <note>)
        """
        primaryCommonscat, commonscatAlternatives = i18n.translate(
            page.site.code, commonscatTemplates,
            fallback=i18n.DEFAULT_FALLBACK)
        commonscatLinktext = ''
        commonscatNote = ''
        # See if commonscat is present
        for template, params in page.templatesWithParams():
            templateTitle = template.title(with_ns=False)
            if templateTitle == primaryCommonscat \
               or templateTitle in commonscatAlternatives:
                commonscatTemplate = templateTitle
                if params:
                    commonscatTarget = params[0]
                    if len(params) > 1:
                        commonscatLinktext = params[1]
                    if len(params) > 2:
                        commonscatNote = params[2]
                else:
                    commonscatTarget = page.title(with_ns=False)
                return (commonscatTemplate, commonscatTarget,
                        commonscatLinktext, commonscatNote)
        return None

    def checkCommonscatLink(self, name: str = ''):
        """Return the name of a valid commons category.

        If the page is a redirect this function tries to follow it.
        If the page doesn't exists the function will return an empty string

        """
        if not name:  # target name is empty
            return ''

        pywikibot.log('getCommonscat: ' + name)
        commonsSite = self.current_page.site.image_repository()
        commonsPage = pywikibot.Page(commonsSite, 'Category:' + name)

        try:  # parse title (T26742)
            str(commonsPage)
        except InvalidTitleError:
            return ''

        if not commonsPage.exists():
            pywikibot.info(
                'Commons category does not exist. Examining deletion log...')
            logpages = commonsSite.logevents(logtype='delete',
                                             page=commonsPage)
            for logitem in logpages:
                loguser = logitem.user()
                logcomment = logitem.comment()
                # Some logic to extract the target page.
                regex = (
                    r'moved to \[\[\:?Category:'
                    r'(?P<newcat1>[^\|\}]+)(\|[^\}]+)?\]\]|'
                    r'Robot: Changing Category:(.+) '
                    r'to Category:(?P<newcat2>.+)')
                m = re.search(regex, logcomment, flags=re.I)

                if not m:
                    pywikibot.info(
                        "getCommonscat: {} deleted by {}. Couldn't find "
                        'move target in "{}"'
                        .format(commonsPage, loguser, logcomment))
                    break

                if m['newcat1']:
                    return self.checkCommonscatLink(m['newcat1'])
                if m['newcat2']:
                    return self.checkCommonscatLink(m['newcat2'])

            return ''

        if commonsPage.isRedirectPage():
            pywikibot.log('getCommonscat: The category is a redirect')
            return self.checkCommonscatLink(
                commonsPage.getRedirectTarget().title(with_ns=False))

        if (pywikibot.Page(commonsPage.site, 'Template:Category redirect')
                in commonsPage.templates()):
            pywikibot.log(
                'getCommonscat: The category is a category redirect')
            for template, param in commonsPage.templatesWithParams():
                if (template.title(with_ns=False) == 'Category redirect'
                        and param):
                    return self.checkCommonscatLink(param[0])

        elif commonsPage.isDisambig():
            pywikibot.log('getCommonscat: The category is disambiguation')
            return ''

        return commonsPage.title(with_ns=False)


def main(*args: str) -> None:
    """
    Process command line arguments and invoke bot.

    If args is an empty list, sys.argv is used.

    :param args: command line arguments
    """
    options = {}
    checkcurrent = False

    # Process global args and prepare generator args parser
    local_args = pywikibot.handle_args(args)
    genFactory = pagegenerators.GeneratorFactory()

    for arg in local_args:
        opt, _, value = arg.partition(':')
        option = opt[1:] if opt[0] == '-' else None
        if option == 'summary':
            options[option] = value or pywikibot.input(
                'What summary do you want to use?')
        elif option == 'checkcurrent':
            checkcurrent = True
        elif option == 'always':
            options[option] = True
        else:
            genFactory.handle_arg(arg)

    if checkcurrent:
        site = pywikibot.Site()
        primaryCommonscat, _alternatives = i18n.translate(
            site.code, commonscatTemplates, fallback=i18n.DEFAULT_FALLBACK)
        template_page = pywikibot.Page(site, 'Template:' + primaryCommonscat)
        generator = template_page.getReferences(namespaces=14,
                                                only_template_inclusion=True)
    else:
        generator = genFactory.getCombinedGenerator()

    if generator:
        if not genFactory.nopreload:
            generator = pagegenerators.PreloadingGenerator(generator)
        bot = CommonscatBot(generator=generator, **options)
        bot.run()
    else:
        pywikibot.bot.suggest_help(missing_generator=True)


if __name__ == '__main__':
    main()
