#!/usr/bin/env python3
# -*- coding: utf-8  -*-
#
#  charts.py
#
#  Copyright 2015 GOLDERWEB – Jonathan Golder <jonathan@golderweb.de>
#
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 3 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program; if not, write to the Free Software
#  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
#  MA 02110-1301, USA.
#
#
"""
Bot which automatically updates a ChartsSummaryPage like
[[Portal:Charts_und_Popmusik/Aktuelle_Nummer-eins-Hits]] by reading linked
CountryLists

The following parameters are supported:

&params;

-always           If given, request for confirmation of edit is short circuited
                  Use for unattended run
"""


import locale

import pywikibot
from pywikibot import pagegenerators

from summarypage import SummaryPage

# This is required for the text that is shown when you run this script
# with the parameter -help.
docuReplacements = {
    '&params;': pagegenerators.parameterHelp
}


class ChartsBot( ):
    """
    Bot which automatically updates a ChartsSummaryPage like
    [[Portal:Charts_und_Popmusik/Aktuelle_Nummer-eins-Hits]] by reading linked
    CountryListsAn incomplete sample bot.
    """

    def __init__( self, generator, always ):
        """
        Constructor.

        @param generator: the page generator that determines on which pages
            to work
        @type generator: generator
        @param always: if True, request for confirmation of edit is short
                        circuited. Use for unattended run
        @type always: bool
        """

        self.generator = generator
        self.always = always

        # Set the edit summary message
        self.site = pywikibot.Site()
        self.summary = "Bot: Aktualisiere Übersichtsseite Nummer-eins-Hits"

        # Set locale to 'de_DE.UTF-8'
        locale.setlocale(locale.LC_ALL, 'de_DE.UTF-8')

    def run(self):
        """Process each page from the generator."""
        for page in self.generator:
            self.treat(page)

    def treat(self, page):
        """Load the given page, does some changes, and saves it."""
        text = self.load(page)
        if not text:
            return

        ################################################################
        # NOTE: Here you can modify the text in whatever way you want. #
        ################################################################

        # Initialise and treat SummaryPageWorker
        sumpage = SummaryPage( text )
        sumpage.treat()

        # Check if editing is needed and if so get new text
        if sumpage.get_new_text():
            text = sumpage.get_new_text()

        if not self.save(text, page, self.summary, False):
            pywikibot.output(u'Page %s not saved.' % page.title(asLink=True))

    def load(self, page):
        """Load the text of the given page."""
        try:
            # Load the page
            text = page.get()
        except pywikibot.NoPage:
            pywikibot.output(u"Page %s does not exist; skipping."
                             % page.title(asLink=True))
        except pywikibot.IsRedirectPage:
            pywikibot.output(u"Page %s is a redirect; skipping."
                             % page.title(asLink=True))
        else:
            return text
        return None

    def save(self, text, page, comment=None, minorEdit=True,
             botflag=True):
        """Update the given page with new text."""
        # only save if something was changed (and not just revision)
        if text != page.get():
            # Show the title of the page we're working on.
            # Highlight the title in purple.
            pywikibot.output(u"\n\n>>> \03{lightpurple}%s\03{default} <<<"
                             % page.title())
            # show what was changed
            pywikibot.showDiff(page.get(), text)
            pywikibot.output(u'Comment: %s' % comment)

            if self.always or pywikibot.input_yn(
                    u'Do you want to accept these changes?',
                    default=False, automatic_quit=False):
                try:
                    page.text = text
                    # Save the page
                    page.save(summary=comment or self.comment,
                              minor=minorEdit, botflag=botflag)
                except pywikibot.LockedPage:
                    pywikibot.output(u"Page %s is locked; skipping."
                                     % page.title(asLink=True))
                except pywikibot.EditConflict:
                    pywikibot.output(
                        u'Skipping %s because of edit conflict'
                        % (page.title()))
                except pywikibot.SpamfilterError as error:
                    pywikibot.output(
                        u'Cannot change %s because of spam blacklist \
entry %s'
                        % (page.title(), error.url))
                else:
                    return True
        return False


def main(*args):
    """
    Process command line arguments and invoke bot.

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

    @param args: command line arguments
    @type args: list of unicode
    """
    # Process global arguments to determine desired site
    local_args = pywikibot.handle_args(args)

    # This factory is responsible for processing command line arguments
    # that are also used by other scripts and that determine on which pages
    # to work on.
    genFactory = pagegenerators.GeneratorFactory()
    # The generator gives the pages that should be worked upon.
    gen = None

    # If always is True, bot won't ask for confirmation of edit (automode)
    always = False

    # Parse command line arguments
    for arg in local_args:
        if arg.startswith("-always"):
            always = True
        else:
            genFactory.handleArg(arg)

    if not gen:
        gen = genFactory.getCombinedGenerator()
    if gen:
        # The preloading generator is responsible for downloading multiple
        # pages from the wiki simultaneously.
        gen = pagegenerators.PreloadingGenerator(gen)
        bot = ChartsBot(gen, always)
        bot.run()
    else:
        pywikibot.showHelp()

if( __name__ == "__main__" ):
    main()