nk20/apps/treasury/views.py

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Python
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# Copyright (C) 2018-2020 by BDE ENS Paris-Saclay
# SPDX-License-Identifier: GPL-3.0-or-later
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import os
import shutil
import subprocess
from tempfile import mkdtemp
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from crispy_forms.helper import FormHelper
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from django.contrib.auth.mixins import LoginRequiredMixin
from django.core.exceptions import ValidationError, PermissionDenied
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from django.db import transaction
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from django.db.models import Q
from django.forms import Form
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from django.http import HttpResponse
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from django.shortcuts import redirect
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from django.urls import reverse_lazy
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from django.utils.translation import gettext_lazy as _
from django.views.generic import UpdateView, DetailView
from django.views.generic.base import View, TemplateView
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from django.views.generic.edit import BaseFormView, DeleteView
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from django_tables2 import SingleTableView
from note.models import SpecialTransaction, NoteSpecial, Alias
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from note_kfet.settings.base import BASE_DIR
from permission.backends import PermissionBackend
from permission.views import ProtectQuerysetMixin, ProtectedCreateView
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from .forms import InvoiceForm, ProductFormSet, ProductFormSetHelper, RemittanceForm, LinkTransactionToRemittanceForm
from .models import Invoice, Product, Remittance, SpecialTransactionProxy, SogeCredit
from .tables import InvoiceTable, RemittanceTable, SpecialTransactionTable, SogeCreditTable
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class InvoiceCreateView(ProtectQuerysetMixin, ProtectedCreateView):
"""
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Create Invoice
"""
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model = Invoice
form_class = InvoiceForm
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extra_context = {"title": _("Create new invoice")}
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def get_sample_object(self):
return Invoice(
id=0,
object="",
description="",
name="",
address="",
)
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def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
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form = context['form']
form.helper = FormHelper()
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# Remove form tag on the generation of the form in the template (already present on the template)
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form.helper.form_tag = False
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# The formset handles the set of the products
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form_set = ProductFormSet(instance=form.instance)
context['formset'] = form_set
context['helper'] = ProductFormSetHelper()
return context
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def get_form(self, form_class=None):
form = super().get_form(form_class)
del form.fields["locked"]
return form
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@transaction.atomic
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def form_valid(self, form):
ret = super().form_valid(form)
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# For each product, we save it
formset = ProductFormSet(self.request.POST, instance=form.instance)
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if formset.is_valid():
for f in formset:
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# We don't save the product if the designation is not entered, ie. if the line is empty
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if f.is_valid() and f.instance.designation:
f.save()
f.instance.save()
else:
f.instance = None
return ret
def get_success_url(self):
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return reverse_lazy('treasury:invoice_list')
class InvoiceListView(LoginRequiredMixin, SingleTableView):
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"""
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List existing Invoices
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"""
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model = Invoice
table_class = InvoiceTable
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extra_context = {"title": _("Invoices list")}
def dispatch(self, request, *args, **kwargs):
# Check that the user is authenticated
if not request.user.is_authenticated:
return self.handle_no_permission()
sample_invoice = Invoice(
id=0,
object="",
description="",
name="",
address="",
)
if not PermissionBackend.check_perm(self.request.user, "treasury.add_invoice", sample_invoice):
raise PermissionDenied(_("You are not able to see the treasury interface."))
return super().dispatch(request, *args, **kwargs)
class InvoiceUpdateView(ProtectQuerysetMixin, LoginRequiredMixin, UpdateView):
"""
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Create Invoice
"""
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model = Invoice
form_class = InvoiceForm
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extra_context = {"title": _("Update an invoice")}
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def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
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form = context['form']
form.helper = FormHelper()
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# Remove form tag on the generation of the form in the template (already present on the template)
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form.helper.form_tag = False
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# The formset handles the set of the products
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form_set = ProductFormSet(instance=self.object)
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context['formset'] = form_set
context['helper'] = ProductFormSetHelper()
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if self.object.locked:
for field_name in form.fields:
form.fields[field_name].disabled = True
for f in form_set.forms:
for field_name in f.fields:
f.fields[field_name].disabled = True
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return context
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def get_form(self, form_class=None):
form = super().get_form(form_class)
del form.fields["id"]
return form
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@transaction.atomic
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def form_valid(self, form):
ret = super().form_valid(form)
formset = ProductFormSet(self.request.POST, instance=form.instance)
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saved = []
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# For each product, we save it
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if formset.is_valid():
for f in formset:
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# We don't save the product if the designation is not entered, ie. if the line is empty
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if f.is_valid() and f.instance.designation:
f.save()
f.instance.save()
saved.append(f.instance.pk)
else:
f.instance = None
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# Remove old products that weren't given in the form
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Product.objects.filter(~Q(pk__in=saved), invoice=form.instance).delete()
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return ret
def get_success_url(self):
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return reverse_lazy('treasury:invoice_list')
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class InvoiceDeleteView(ProtectQuerysetMixin, LoginRequiredMixin, DeleteView):
"""
Delete a non-validated WEI registration
"""
model = Invoice
extra_context = {"title": _("Delete invoice")}
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def delete(self, request, *args, **kwargs):
if self.get_object().locked:
raise PermissionDenied(_("This invoice is locked and can't be deleted."))
return super().delete(request, *args, **kwargs)
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def get_success_url(self):
return reverse_lazy('treasury:invoice_list')
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class InvoiceRenderView(LoginRequiredMixin, View):
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"""
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Render Invoice as a generated PDF with the given information and a LaTeX template
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"""
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def get(self, request, **kwargs):
pk = kwargs["pk"]
invoice = Invoice.objects.filter(PermissionBackend.filter_queryset(request.user, Invoice, "view")).get(pk=pk)
tex = invoice.tex
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try:
os.mkdir(BASE_DIR + "/tmp")
except FileExistsError:
pass
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# We render the file in a temporary directory
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tmp_dir = mkdtemp(prefix=BASE_DIR + "/tmp/")
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try:
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with open("{}/invoice-{:d}.tex".format(tmp_dir, pk), "wb") as f:
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f.write(tex.encode("UTF-8"))
del tex
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# The file has to be rendered twice
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for _ignored in range(2):
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error = subprocess.Popen(
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["/usr/bin/xelatex", "-interaction=nonstopmode", "invoice-{}.tex".format(pk)],
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cwd=tmp_dir,
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stdin=open(os.devnull, "r"),
stderr=open(os.devnull, "wb"),
stdout=open(os.devnull, "wb"),
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).wait()
if error:
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with open("{}/invoice-{:d}.log".format(tmp_dir, pk), "r") as f:
log = f.read()
raise IOError("An error attempted while generating a invoice (code=" + str(error) + ")\n\n" + log)
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# Display the generated pdf as a HTTP Response
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pdf = open("{}/invoice-{}.pdf".format(tmp_dir, pk), 'rb').read()
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response = HttpResponse(pdf, content_type="application/pdf")
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response['Content-Disposition'] = "inline;filename=Facture%20n°{:d}.pdf".format(pk)
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except IOError as e:
raise e
finally:
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# Delete all temporary files
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shutil.rmtree(tmp_dir)
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return response
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class RemittanceCreateView(ProtectQuerysetMixin, ProtectedCreateView):
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"""
Create Remittance
"""
model = Remittance
form_class = RemittanceForm
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extra_context = {"title": _("Create a new remittance")}
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def get_sample_object(self):
return Remittance(
remittance_type_id=1,
comment="",
)
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def get_success_url(self):
return reverse_lazy('treasury:remittance_list')
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
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context["table"] = RemittanceTable(
data=Remittance.objects.filter(
PermissionBackend.filter_queryset(self.request.user, Remittance, "view")).all())
context["special_transactions"] = SpecialTransactionTable(data=SpecialTransaction.objects.none())
return context
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class RemittanceListView(LoginRequiredMixin, TemplateView):
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"""
List existing Remittances
"""
template_name = "treasury/remittance_list.html"
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extra_context = {"title": _("Remittances list")}
def dispatch(self, request, *args, **kwargs):
# Check that the user is authenticated
if not request.user.is_authenticated:
return self.handle_no_permission()
sample_remittance = Remittance(
remittance_type_id=1,
comment="",
)
if not PermissionBackend.check_perm(self.request.user, "treasury.add_remittance", sample_remittance):
raise PermissionDenied(_("You are not able to see the treasury interface."))
return super().dispatch(request, *args, **kwargs)
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
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opened_remittances = RemittanceTable(
data=Remittance.objects.filter(closed=False).filter(
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PermissionBackend.filter_queryset(self.request.user, Remittance, "view")).all(),
prefix="opened-remittances-",
)
opened_remittances.paginate(page=self.request.GET.get("opened-remittances-page", 1), per_page=10)
context["opened_remittances"] = opened_remittances
closed_remittances = RemittanceTable(
data=Remittance.objects.filter(closed=True).filter(
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PermissionBackend.filter_queryset(self.request.user, Remittance, "view")).all(),
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prefix="closed-remittances-",
)
closed_remittances.paginate(page=self.request.GET.get("closed-remittances-page", 1), per_page=10)
context["closed_remittances"] = closed_remittances
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no_remittance_tr = SpecialTransactionTable(
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data=SpecialTransaction.objects.filter(source__in=NoteSpecial.objects.filter(~Q(remittancetype=None)),
specialtransactionproxy__remittance=None).filter(
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PermissionBackend.filter_queryset(self.request.user, Remittance, "view")).all(),
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exclude=('remittance_remove', ),
prefix="no-remittance-",
)
no_remittance_tr.paginate(page=self.request.GET.get("no-remittance-page", 1), per_page=10)
context["special_transactions_no_remittance"] = no_remittance_tr
with_remittance_tr = SpecialTransactionTable(
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data=SpecialTransaction.objects.filter(source__in=NoteSpecial.objects.filter(~Q(remittancetype=None)),
specialtransactionproxy__remittance__closed=False).filter(
PermissionBackend.filter_queryset(self.request.user, Remittance, "view")).all(),
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exclude=('remittance_add', ),
prefix="with-remittance-",
)
with_remittance_tr.paginate(page=self.request.GET.get("with-remittance-page", 1), per_page=10)
context["special_transactions_with_remittance"] = with_remittance_tr
return context
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class RemittanceUpdateView(ProtectQuerysetMixin, LoginRequiredMixin, UpdateView):
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"""
Update Remittance
"""
model = Remittance
form_class = RemittanceForm
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extra_context = {"title": _("Update a remittance")}
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def get_success_url(self):
return reverse_lazy('treasury:remittance_list')
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
data = SpecialTransaction.objects.filter(specialtransactionproxy__remittance=self.object).filter(
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PermissionBackend.filter_queryset(self.request.user, Remittance, "view")).all()
context["special_transactions"] = SpecialTransactionTable(
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data=data,
exclude=('remittance_add', 'remittance_remove', ) if self.object.closed else ('remittance_add', ))
return context
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class LinkTransactionToRemittanceView(ProtectQuerysetMixin, LoginRequiredMixin, UpdateView):
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"""
Attach a special transaction to a remittance
"""
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model = SpecialTransactionProxy
form_class = LinkTransactionToRemittanceForm
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extra_context = {"title": _("Attach a transaction to a remittance")}
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def get_success_url(self):
return reverse_lazy('treasury:remittance_list')
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
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form = context["form"]
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form.fields["last_name"].initial = self.object.transaction.last_name
form.fields["first_name"].initial = self.object.transaction.first_name
form.fields["bank"].initial = self.object.transaction.bank
form.fields["amount"].initial = self.object.transaction.amount
form.fields["remittance"].queryset = form.fields["remittance"] \
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.queryset.filter(remittance_type__note=self.object.transaction.source)
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return context
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class UnlinkTransactionToRemittanceView(LoginRequiredMixin, View):
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"""
Unlink a special transaction and its remittance
"""
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def get(self, *args, **kwargs):
pk = kwargs["pk"]
transaction = SpecialTransactionProxy.objects.get(pk=pk)
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# The remittance must be open (or inexistant)
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if transaction.remittance and transaction.remittance.closed:
raise ValidationError("Remittance is already closed.")
transaction.remittance = None
transaction.save()
return redirect('treasury:remittance_list')
class SogeCreditListView(LoginRequiredMixin, ProtectQuerysetMixin, SingleTableView):
"""
List all Société Générale credits
"""
model = SogeCredit
table_class = SogeCreditTable
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extra_context = {"title": _("List of credits from the Société générale")}
def dispatch(self, request, *args, **kwargs):
# Check that the user is authenticated
if not request.user.is_authenticated:
return self.handle_no_permission()
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if not super().get_queryset().exists():
raise PermissionDenied(_("You are not able to see the treasury interface."))
return super().dispatch(request, *args, **kwargs)
def get_queryset(self, **kwargs):
"""
Filter the table with the given parameter.
:param kwargs:
:return:
"""
qs = super().get_queryset()
if "search" in self.request.GET:
pattern = self.request.GET["search"]
if pattern:
qs = qs.filter(
Q(user__first_name__iregex=pattern)
| Q(user__last_name__iregex=pattern)
| Q(user__note__alias__name__iregex="^" + pattern)
| Q(user__note__alias__normalized_name__iregex="^" + Alias.normalize(pattern))
)
if "valid" not in self.request.GET or not self.request.GET["valid"]:
qs = qs.filter(credit_transaction__valid=False)
return qs
class SogeCreditManageView(LoginRequiredMixin, ProtectQuerysetMixin, BaseFormView, DetailView):
"""
Manage credits from the Société générale.
"""
model = SogeCredit
form_class = Form
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extra_context = {"title": _("Manage credits from the Société générale")}
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@transaction.atomic
def form_valid(self, form):
if "validate" in form.data:
self.get_object().validate(True)
elif "delete" in form.data:
self.get_object().delete()
return super().form_valid(form)
def get_success_url(self):
if "validate" in self.request.POST:
return reverse_lazy('treasury:manage_soge_credit', args=(self.get_object().pk,))
return reverse_lazy('treasury:soge_credits')