from django.conf import settings
from django.templatetags.static import static
from django.forms.models import model_to_dict
from django.utils.translation import gettext as _
import time


available_themes = [
    ('default', 'Default'),
    ('clear-red', 'Clear Red'),
    ('clear-green', 'Clear Green'),
    ('clear-blue', 'Clear Blue'),
]
default_theme = 'default'


class ThemeSettings(object):
    def __init__(self):
        from .models import GetSettings
        s = GetSettings()
        for attr_name in model_to_dict(s):
            attr = getattr(s, attr_name)
            if attr_name == 'page_theme' and attr == 'default':
                setattr(self, attr_name, settings.DEFAULT_THEME)
            else:
                setattr(self, attr_name, attr)


class bar(list):
    def __init__(self, turn_around=False):
        self.time_measurement = time_measurement()
        list.__init__(self)
        self.turn_around = turn_around
        self.debug = False

    def index(self, entry_uid):
        for i in range(0, len(self)):
            if self[i].uid == entry_uid:
                return i
        raise ValueError('not in list')

    def append_entry(self, *args, **kwargs):
        self.append(entry(*args, **kwargs))

    def replace_entry(self, entry_uid, *args, **kwargs):
        i = self.index(entry_uid)
        self[i] = entry(*args, **kwargs)

    def append_entry_to_entry(self, entry_uid, *args, **kwargs):
        i = self.index(entry_uid)
        self[i].append(entry(*args, **kwargs))

    @property
    def entries(self):
        rv = self[:]
        if self.turn_around is True:
            rv.reverse()
        if self.debug is True:
            rv.append(entry('time_measurement', self.time_measurement.time_str, None, None, True, False))
        return rv


class Context(dict):
    ACTIONBAR = 'actionbar'
    BOTTOMBAR = 'bottombar'
    MENUBAR = 'menubar'
    NAVIGATIONBAR = 'navigationbar'
    SETTINGS = 'settings'
    TITLE = 'title'

    def __init__(self, request):
        from .models import BottomBar
        #
        dict.__init__(
            self,
            bottombar=bar(),
            actionbar=bar(),
            navigationbar=bar(turn_around=True),
            menubar=bar(),
            settings=ThemeSettings(),
            title=ThemeSettings().page_title,
        )
        #
        for i in range(1, 6):
            for e in BottomBar.objects.filter(sequence_number=i):
                if e.icon:
                    icon_url = e.icon.url
                else:
                    icon_url = None
                self[self.BOTTOMBAR].append(entry(
                    'bootombar-%d' % e.id,
                    e.name,
                    icon_url,
                    e.url,
                    e.left,
                    False
                ))
        if settings.DEBUG:
            self[self.BOTTOMBAR].debug = True
            self[self.BOTTOMBAR].append(entry('bottombar-w3-validator', _('W3-Validator'), None, 'https://validator.w3.org/nu/?doc=' + request.build_absolute_uri(), False, False))

    def set_additional_title(self, at):
        if self[self.SETTINGS].page_title and at:
            self[self.TITLE] = self[self.SETTINGS].page_title + ' - ' + at
        else:
            self[self.TITLE] = self[self.SETTINGS].page_title + at


class entry(list):
    def __init__(self, uid, name, icon, url, left, active):
        list.__init__(self)
        self.uid = uid
        self.name = name
        self.icon = icon
        self.url = url
        self.left = left
        self.active = active

    @property
    def is_dropdownmenu(self):
        return len(self) > 0

    def __str__(self):
        return 'barentry: %s' % self.uid


def empty_entry_parameters(request):
    return (
        'empty',                                    # uid
        '',                                         # name
        transparency_icon_url(request),             # icon
        None,                                       # url
        True,                                       # left
        False                                       # active
    )


def get_themename(request):
    return ThemeSettings().page_theme


class time_measurement(object):
    def __init__(self):
        self._start_time = time.time()

    @property
    def time_str(self):
        return _('Time consumption') + ': %.2fs' % (time.time() - self._start_time)


def transparency_icon_url(request):
    return static('themes/' + get_themename(request) + '/transparency.png')


def color_icon_url(request, icon_filename):
    return static('themes/' + get_themename(request) + '/1st-color/%s' % icon_filename)


def gray_icon_url(request, icon_filename):
    return static('themes/' + get_themename(request) + '/2nd-color/%s' % icon_filename)