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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (C) 2014 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 Affero 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 Affero General Public License for more details.

# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# See the file COPYING for details.

import datetime

from django import forms
from django.core import validators
from django.utils.safestring import mark_safe
from django.utils.translation import ugettext_lazy as _

from ishtar_common.models import Person, PersonType, valid_id
from archaeological_files import models

from ishtar_common.forms import get_now, reverse_lazy
from ishtar_common.forms_common import get_advanced_town_field
from archaeological_files.forms import GENERAL_CONTRACTOR, \
                                       RESPONSIBLE_PLANNING_SERVICE

from ishtar_common import widgets

class FileFormGeneral(forms.Form):
    form_label = _("General")
    associated_models = {'file_type':models.FileType}
    file_type = forms.ChoiceField(label=_("File type"), choices=[])
    year = forms.IntegerField(label=_("Year"),
                              initial=lambda:datetime.datetime.now().year,
                              validators=[validators.MinValueValidator(1900),
                                          validators.MaxValueValidator(2100)])
    creation_date = forms.DateField(label=_(u"Creation date"),
                                    initial=get_now, widget=widgets.JQueryDate)
    reception_date = forms.DateField(label=_(u"Reception date"),
                                    initial=get_now, widget=widgets.JQueryDate)

    def __init__(self, *args, **kwargs):
        super(FileFormGeneral, self).__init__(*args, **kwargs)
        self.fields['file_type'].choices = models.FileType.get_types()
        self.fields['file_type'].help_text = models.FileType.get_help()

class FileFormPreventiveType(forms.Form):
    form_label = u"Saisine"
    associated_models = {'saisine_type':models.SaisineType,
                         'permit_type':models.PermitType}
    permit_type = forms.ChoiceField(label=_(u"Permit type"), required=False,
                                    choices=[])
    saisine_type = forms.ChoiceField(label=_(u"Saisine type"),
                                         choices=[])
    def __init__(self, *args, **kwargs):
        super(FileFormPreventiveType, self).__init__(*args, **kwargs)
        self.fields['saisine_type'].choices = models.SaisineType.get_types()
        self.fields['saisine_type'].help_text = models.SaisineType.get_help()
        self.fields['permit_type'].choices = models.PermitType.get_types(
                                                              default='NP')
        self.fields['permit_type'].help_text = models.PermitType.get_help()

class FileFormPlanning(forms.Form):
    form_label = _(u"Planning")
    associated_models = {'main_town':models.Town}
    name = forms.CharField(label=_(u"Planning name"), required=False,
                           max_length=100)
    main_town = get_advanced_town_field(required=True)
    locality = forms.CharField(label=_(u"Locality"), max_length=100,
                               required=False)
    address = forms.CharField(label=_(u"Address (number/street)"),
                              widget=forms.Textarea(
                                    attrs={"placeholder":_(u"Number/street")}),
                              required=False,
                              )
    postal_code = forms.CharField(label=_(u"Postal code"), max_length=10,
                                  required=False)
    total_surface = forms.IntegerField(required=False,
                           widget=widgets.AreaWidget,
                           label=_(u"Total surface (m²)"),
                           validators=[validators.MinValueValidator(0),
                                       validators.MaxValueValidator(999999999)])
    total_developed_surface = forms.IntegerField(widget=widgets.AreaWidget,
           label=_(u"Total developed surface (m²)"),
           required=False, validators=[validators.MinValueValidator(0),
                                       validators.MaxValueValidator(999999999)])

class FileFormGeneralContractor(forms.Form):
    form_label = _(u"General contractor")
    associated_models = {'general_contractor':models.Person}

    def __init__(self, *args, **kwargs):

        # get the status: natural person or corporation
        DEFAULT_STATUS = 'natural'
        current_status = ''
        if 'data' in kwargs:
            current_item_key = ((kwargs['prefix'] + '-') if kwargs.get('prefix')\
                                                 else '') + 'general_contractor'
            if kwargs['data'] and kwargs['data'].get(current_item_key):
                model = self.associated_models['general_contractor']
                try:
                    item = model.objects.get(pk=kwargs['data'][current_item_key])
                    current_status = 'natural' if item.is_natural() \
                                     else 'corporation'
                except (model.DoesNotExist, ValueError):
                    pass

        status = ''
        if 'status' in kwargs:
            status = kwargs.pop('status')
            if current_status != status:
                if kwargs.get('data'):
                    # status is different from the existing - clear fields
                    kwargs.pop('data')
        elif current_status:
            status = current_status
        else:
            status = DEFAULT_STATUS

        if status not in ('natural', 'corporation'):
            status = DEFAULT_STATUS
        super(FileFormGeneralContractor, self).__init__(*args, **kwargs)

        # distinct widget for natural and corporation
        if status == 'natural':
            self.fields['general_contractor'] = forms.IntegerField(
             label=_(u"General contractor"),
             widget=widgets.JQueryPersonOrganization(
                reverse_lazy('autocomplete-person',
                             args=[GENERAL_CONTRACTOR.pk]),
                reverse_lazy('person_create'),
                model=Person,
                limit={'person_types':[GENERAL_CONTRACTOR.pk],
                       'attached_to__isnull':True},
                js_template='ishtar/blocks/JQueryNaturalPerson.js',
                new=True),
             validators=[valid_id(Person)])
        else:
            self.fields['general_contractor'] = forms.IntegerField(
             label=_(u"General contractor"),
             widget=widgets.JQueryPersonOrganization(
                reverse_lazy('autocomplete-person',
                             args=[GENERAL_CONTRACTOR.pk]),
                reverse_lazy('organization_person_create'),
                model=Person,
                limit={'person_types':[GENERAL_CONTRACTOR.pk]},
                js_template='ishtar/blocks/JQueryCorporationPerson.js',
                new=True),
             validators=[valid_id(Person)])

class FileFormPlanningService(forms.Form):
    form_label = _(u"Town planning service")
    associated_models = {'responsible_town_planning_service':models.Person}
    reference_number = forms.IntegerField(label=_(u"File reference"),
                                          required=False)

    def __init__(self, *args, **kwargs):
        super(FileFormPlanningService, self).__init__(*args, **kwargs)
        self.fields['responsible_town_planning_service'] = forms.IntegerField(
            label=_(u"Responsible town planning service"),
            widget=widgets.JQueryPersonOrganization(
                reverse_lazy('autocomplete-person',
                             args=[RESPONSIBLE_PLANNING_SERVICE.pk]),
                reverse_lazy('townplanning_create'),
                model=Person,
                limit={'person_types':[RESPONSIBLE_PLANNING_SERVICE.pk]},
                js_template='ishtar/blocks/JQueryCorporationPerson.js',
                new=True),
            validators=[valid_id(Person)])
        self.fields.keyOrder = ['responsible_town_planning_service',
                                'reference_number']

class FileFormInstruction(forms.Form):
    form_label = u"Instruction SRA"
    associated_models = {'in_charge':models.Person}
    in_charge = forms.IntegerField(label=_("Person in charge"),
        widget=widgets.JQueryAutoComplete(reverse_lazy('autocomplete-person',
          args=[PersonType.objects.get(txt_idx='sra_agent').pk]),
        limit={'person_types':[PersonType.objects.get(txt_idx='sra_agent').pk]},
        associated_model=Person, new=True),
        validators=[valid_id(Person)])
    related_file = forms.IntegerField(label=_("Related file"), required=False,
         widget=widgets.JQueryAutoComplete(reverse_lazy('autocomplete-file'),
                                           associated_model=models.File),
         validators=[valid_id(models.File)])
    comment = forms.CharField(label=_(u"Comment"), widget=forms.Textarea,
                              required=False)
    instruction_deadline = forms.DateField(widget=widgets.JQueryDate,
                                           required=False)
    year = forms.IntegerField(label=_("Year"),
                              validators=[validators.MinValueValidator(1900),
                                          validators.MaxValueValidator(2100)])
    numeric_reference = forms.IntegerField(label=_("Numeric reference"),
                                           required=False)
    end_date = forms.DateField(initial=get_now, widget=widgets.JQueryDate,
                               required=False)

    def __init__(self, *args, **kwargs):
        c_year = datetime.date.today().year
        if 'year' in kwargs:
            c_year = kwargs.pop('year')
        super(FileFormInstruction, self).__init__(*args, **kwargs)
        self.fields['year'].initial = c_year
        self.fields['year'].widget.attrs.update({'readonly':'readonly'})
        c_num, lasts = 0, ""
        q = models.File.objects.filter(numeric_reference__isnull=False,
                        year=c_year).order_by('-numeric_reference')
        if q.count():
            num = q.all()[0].numeric_reference
            lasts = u"SRA %s-%d" % (unicode(c_year), num)
        lbl = self.fields['numeric_reference'].label
        if lasts:
            lbl += u"<br/>(dernière entrée : %s)" % lasts
        self.fields['numeric_reference'].label = mark_safe(lbl)
        self.fields['numeric_reference'].initial = c_num + 1