django-orchestra/orchestra/contrib/bills/actions.py

212 lines
7.8 KiB
Python

import zipfile
from datetime import date
from io import StringIO
from django.contrib import messages
from django.contrib.admin import helpers
from django.core.exceptions import ValidationError
from django.core.urlresolvers import reverse
from django.db import transaction
from django.http import HttpResponse
from django.shortcuts import render, redirect
from django.utils.safestring import mark_safe
from django.utils.translation import ungettext, ugettext_lazy as _
from orchestra.admin.forms import adminmodelformset_factory
from orchestra.admin.utils import get_object_from_url, change_url
from orchestra.utils.html import html_to_pdf
from .forms import SelectSourceForm
from .helpers import validate_contact
def download_bills(modeladmin, request, queryset):
if queryset.count() > 1:
stringio = StringIO()
archive = zipfile.ZipFile(stringio, 'w')
for bill in queryset:
pdf = html_to_pdf(bill.html or bill.render())
archive.writestr('%s.pdf' % bill.number, pdf)
archive.close()
response = HttpResponse(stringio.getvalue(), content_type='application/pdf')
response['Content-Disposition'] = 'attachment; filename="orchestra-bills.zip"'
return response
bill = queryset.get()
pdf = html_to_pdf(bill.html or bill.render(), pagination=bill.has_multiple_pages)
return HttpResponse(pdf, content_type='application/pdf')
download_bills.verbose_name = _("Download")
download_bills.url_name = 'download'
def view_bill(modeladmin, request, queryset):
bill = queryset.get()
if not validate_contact(request, bill):
return
html = bill.html or bill.render()
return HttpResponse(html)
view_bill.verbose_name = _("View")
view_bill.url_name = 'view'
@transaction.atomic
def close_bills(modeladmin, request, queryset):
queryset = queryset.filter(is_open=True)
if not queryset:
messages.warning(request, _("Selected bills should be in open state"))
return
for bill in queryset:
if not validate_contact(request, bill):
return
SelectSourceFormSet = adminmodelformset_factory(modeladmin, SelectSourceForm, extra=0)
formset = SelectSourceFormSet(queryset=queryset)
if request.POST.get('post') == 'generic_confirmation':
formset = SelectSourceFormSet(request.POST, request.FILES, queryset=queryset)
if formset.is_valid():
transactions = []
for form in formset.forms:
source = form.cleaned_data['source']
transaction = form.instance.close(payment=source)
if transaction:
transactions.append(transaction)
for bill in queryset:
modeladmin.log_change(request, bill, 'Closed')
messages.success(request, _("Selected bills have been closed"))
if transactions:
num = len(transactions)
if num == 1:
url = change_url(transactions[0])
else:
url = reverse('admin:payments_transaction_changelist')
url += 'id__in=%s' % ','.join([str(t.id) for t in transactions])
context = {
'url': url,
'num': num,
}
message = ungettext(
_('<a href="%(url)s">One related transaction</a> has been created') % context,
_('<a href="%(url)s">%(num)i related transactions</a> have been created') % context,
num)
messages.success(request, mark_safe(message))
return
opts = modeladmin.model._meta
context = {
'title': _("Are you sure about closing the following bills?"),
'content_message': _("Once a bill is closed it can not be further modified.</p>"
"<p>Please select a payment source for the selected bills"),
'action_name': 'Close bills',
'action_value': 'close_bills',
'display_objects': [],
'queryset': queryset,
'opts': opts,
'app_label': opts.app_label,
'action_checkbox_name': helpers.ACTION_CHECKBOX_NAME,
'formset': formset,
'obj': get_object_from_url(modeladmin, request),
}
return render(request, 'admin/orchestra/generic_confirmation.html', context)
close_bills.verbose_name = _("Close")
close_bills.url_name = 'close'
def send_bills(modeladmin, request, queryset):
for bill in queryset:
if not validate_contact(request, bill):
return
num = 0
for bill in queryset:
bill.send()
modeladmin.log_change(request, bill, 'Sent')
num += 1
messages.success(request, ungettext(
_("One bill has been sent."),
_("%i bills have been sent.") % num,
num))
send_bills.verbose_name = lambda bill: _("Resend" if getattr(bill, 'is_sent', False) else "Send")
send_bills.url_name = 'send'
def manage_lines(modeladmin, request, queryset):
url = reverse('admin:bills_bill_manage_lines')
url += '?ids=%s' % ','.join(map(str, queryset.values_list('id', flat=True)))
return redirect(url)
def undo_billing(modeladmin, request, queryset):
group = {}
for line in queryset.select_related('order'):
if line.order_id:
try:
group[line.order].append(line)
except KeyError:
group[line.order] = [line]
# Validate
for order, lines in group.items():
prev = None
billed_on = date.max
billed_until = date.max
for line in sorted(lines, key=lambda l: l.start_on):
if billed_on is not None:
if line.order_billed_on is None:
billed_on = line.order_billed_on
else:
billed_on = min(billed_on, line.order_billed_on)
if billed_until is not None:
if line.order_billed_until is None:
billed_until = line.order_billed_until
else:
billed_until = min(billed_until, line.order_billed_until)
if prev:
if line.start_on != prev:
messages.error(request, "Line dates doesn't match.")
return
else:
# First iteration
if order.billed_on < line.start_on:
messages.error(request, "Billed on is smaller than first line start_on.")
return
prev = line.end_on
nlines += 1
if not prev:
messages.error(request, "Order does not have lines!.")
order.billed_until = billed_until
order.billed_on = billed_on
# Commit changes
norders, nlines = 0, 0
for order, lines in group.items():
for line in lines:
nlines += 1
line.delete()
# TODO update order history undo billing
order.save(update_fields=('billed_until', 'billed_on'))
norders += 1
messages.success(request, _("%(norders)s orders and %(nlines)s lines undoed.") % {
'nlines': nlines,
'norders': norders
})
def move_lines(modeladmin, request, queryset, action=None):
# Validate
target = request.GET.get('target')
if not target:
# select target
context = {}
return render(request, 'admin/orchestra/generic_confirmation.html', context)
target = Bill.objects.get(pk=int(pk))
if request.POST.get('post') == 'generic_confirmation':
for line in queryset:
line.bill = target
line.save(update_fields=['bill'])
# TODO bill history update
messages.success(request, _("Lines moved"))
# Final confirmation
return render(request, 'admin/orchestra/generic_confirmation.html', context)
def copy_lines(modeladmin, request, queryset):
# same as move, but changing action behaviour
return move_lines(modeladmin, request, queryset)