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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (C) 2008  Étienne Loks  <etienne.loks_AT_peacefrogsDOTnet>

# 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, see <http://www.gnu.org/licenses/>.

# See the file COPYING for details.

"""
Forms
"""
from django import forms
from django.contrib.gis.db import models
from django.utils.translation import ugettext as _
from django.contrib.auth.models import User
from django.core.mail import send_mail

from chimere import settings

from chimere.main.models import Marker, Route, PropertyModel, Property, Area,\
                                News, Category
from chimere.main.widgets import AreaField, PointField, TextareaWidget

def notifyStaff(geo_object):
    category = unicode(geo_object.subcategory)
    subject = u'[Chimère] %s %s' % (_(u"New submission for"), category)
    user_list = [u.email for u in
          User.objects.filter(is_staff=True).exclude(email="").order_by('id')]
    message = _(u'The new item "%s" has been submited in the category: ') % \
              geo_object.name + category
    message += "\n\n" + _(u"To valid, precise or unvalid this item: ")
    message += settings.BASE_URL + 'admin'
    message += u"\n\n--\nChimère"
    send_mail(subject, message, user_list[0], user_list)

class NewsAdminForm(forms.ModelForm):
    """
    Main form for news
    """
    content = forms.CharField(widget=TextareaWidget)
    class Meta:
        model = News

class CategoryAdminForm(forms.ModelForm):
    """
    Main form for categories
    """
    description = forms.CharField(widget=TextareaWidget, required=False)
    class Meta:
        model = Category

class MarkerAdminForm(forms.ModelForm):
    """
    Main form for marker
    """
    # declare properties
    for property in PropertyModel.objects.filter(available=True):
        exec('property_%d_%d = forms.CharField(label="%s", widget=%s, \
required=False)' % (property.order, property.id, property.name,
                    PropertyModel.TYPE_WIDGET[property.type]))
    class Meta:
        model = Marker

    def __init__(self, *args, **keys):
        """
        Custom initialization method in order to manage properties
        """
        if 'instance' in keys and keys['instance']:
            instance = keys['instance']
            property_dct = {}
            for pm in PropertyModel.objects.filter(available=True):
                property  = instance.getProperty(pm)
                if property:
                    property_dct[pm.getNamedId()] = property.value
            if 'initial' in keys:
                keys['initial'].update(property_dct)
            else:
                keys['initial'] = property_dct
        super(MarkerAdminForm, self).__init__(*args, **keys)

    def save(self, *args, **keys):
        """
        Custom save method in order to manage associeted properties
        """
        new_marker = super(MarkerAdminForm, self).save(*args, **keys)
        if 'status' not in self.cleaned_data:
            new_marker.status = 'S'
        new_marker.save()
        # save each property
        for propertymodel in PropertyModel.objects.filter(available=True):
            properties = Property.objects.filter(marker=new_marker,
                                                 propertymodel=propertymodel)
            # new property
            if not properties:
                new_property = Property.objects.create(marker=new_marker,
                                    propertymodel=propertymodel,
                                    value=self.cleaned_data['property_%d_%d' % (
                                        propertymodel.order, propertymodel.id)])
                new_property.save()
            else:
                # in case of multiple edition as the same time delete arbitrary
                # the others
                if len(properties) > 1:
                    for property in properties[1:]:
                        property.delete()
                property = properties[0]
                property.value = self.cleaned_data['property_%d_%d' % (
                                         propertymodel.order, propertymodel.id)]
                property.save()
        return new_marker

class MarkerForm(MarkerAdminForm):
    """
    Form for the edit page
    """
    class Meta:
        model = Marker
        exclude = ('status',)

class RouteAdminForm(forms.ModelForm):
    """
    Main form for route
    """
    """
    # declare properties
    for property in PropertyModel.objects.filter(available=True):
        exec('property_%d_%d = forms.CharField(label="%s", widget=%s, \
required=False)' % (property.order, property.id, property.name,
                    PropertyModel.TYPE_WIDGET[property.type]))"""
    class Meta:
        model = Route

    def __init__(self, *args, **keys):
        """
        Custom initialization method in order to manage properties
        """
        if 'instance' in keys and keys['instance']:
            instance = keys['instance']
            property_dct = {}
            for pm in PropertyModel.objects.filter(available=True):
                property  = instance.getProperty(pm)
                if property:
                    property_dct[pm.getNamedId()] = property.value
            if 'initial' in keys:
                keys['initial'].update(property_dct)
            else:
                keys['initial'] = property_dct
        super(RouteAdminForm, self).__init__(*args, **keys)

    def save(self, *args, **keys):
        """
        Custom save method in order to manage associeted properties
        """
        new_marker = super(RouteAdminForm, self).save(*args, **keys)
        if 'status' not in self.cleaned_data:
            new_marker.status = 'S'
        new_marker.save()
        """
        # save each property
        for propertymodel in PropertyModel.objects.filter(available=True):
            properties = Property.objects.filter(marker=new_marker,
                                                 propertymodel=propertymodel)
            # new property
            if not properties:
                new_property = Property.objects.create(marker=new_marker,
                                    propertymodel=propertymodel,
                                    value=self.cleaned_data['property_%d_%d' % (
                                        propertymodel.order, propertymodel.id)])
                new_property.save()
            else:
                # in case of multiple edition as the same time delete arbitrary
                # the others
                if len(properties) > 1:
                    for property in properties[1:]:
                        property.delete()
                property = properties[0]
                property.value = self.cleaned_data['property_%d_%d' % (
                                         propertymodel.order, propertymodel.id)]
                property.save()"""
        return new_marker

class RouteForm(RouteAdminForm):
    """
    Form for the edit page
    """
    class Meta:
        model = Route
        exclude = ('status',)

class AreaAdminForm(forms.ModelForm):
    """
    Admin page to create an area
    """
    area = AreaField(label=_("Area"), fields=(PointField(), PointField()))
    class Meta:
        model = Area

    def __init__(self, *args, **keys):
        """
        Custom initialization method in order to manage area
        """
        if 'instance' in keys and keys['instance']:
            instance = keys['instance']
            dct = {'area':(instance.upper_left_corner,
                             instance.lower_right_corner)}
            if 'initial' in keys:
                keys['initial'].update(dct)
            else:
                keys['initial'] = dct
        super(AreaAdminForm, self).__init__(*args, **keys)

    def save(self, *args, **keys):
        """
        Custom save method in order to manage area
        """
        new_area = super(AreaAdminForm, self).save(*args, **keys)
        area = self.cleaned_data['area']
        new_area.upper_left_corner = 'POINT(%s %s)' % (area[0][0], area[0][1])
        new_area.lower_right_corner = 'POINT(%s %s)' % (area[1][0],
                                                         area[1][1])
        return new_area