#!/usr/bin/python
# -*- coding: utf-8 -*-

from welcome.board import SmallBoard
from gi.repository import Gtk
import pychrysalide

try:
    import urllib3
    has_urllib3 = True
except:
    has_urllib3 = False


class VersionChecker(SmallBoard):
    """Affichage des versions courante et disponible, ainsi que des conclusions associées."""


    def __init__(self):
        """Construit le panneau avec son contenu."""

        super(VersionChecker, self).__init__()

        current = pychrysalide.revision()

        if has_urllib3:

            lastest = self.get_lastest_version('community')            
            up2date = self.get_update_status(current, lastest)

            if lastest != None and up2date != None:

                msg = '''Your version is: <b>%s</b>

Lastest version is: <b>%s</b>'''

                caption = msg % (current, lastest if lastest != None else 'unknown')

                if up2date:
                    caption = caption + '''

Your software is <span color='green'><b>up-to-date</b></span>.'''
                else:
                    caption = caption + '''

Your software is <b><span color='red'>outdated</span></b>.'''

            else:

                msg = '''Your version is: <b>%s</b>
            
An error occurred while dealing with revision numbers.'''

                caption = msg % current

        else:

            msg = '''Your version is: <b>%s</b>

To display the lastest available version, please install the <b>urllib3</b> package for Python.'''

            caption = msg % current

        desc = Gtk.Label(caption, use_markup=True, wrap=True)
        desc.set_track_visited_links(False)
        self.add(desc)


    def get_lastest_version(self, category):
        """Retrouve la dernière version disponible à partir du site officiel."""

        lastest = None

        http = urllib3.PoolManager()
        request = http.request('GET', 'http://localhost/mediawiki/data/versions')

        html = request.data.decode('utf-8')

        request.release_conn()

        available = html.split('\n')

        for a in available:
            desc = a.split('=')
            if desc[0] == category:
                lastest = desc[1]
                break

        return lastest


    def get_update_status(self, current, lastest):
        """Détermine le degré de mise à jour du système."""

        if current[0] != 'r' or lastest[0] != 'r':
            return None

        cur_rev = int(current[1:])
        last_rev = int(lastest[1:])

        return (cur_rev >= last_rev)


    def get_location(self):
        """Fournit la localisation souhaitée pour la plache."""

        return [ 2, 0, 1, 1 ]