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

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import zipfile
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from datetime import date
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from io import StringIO
from django.contrib import messages
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from django.contrib.admin import helpers
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from django.core.exceptions import ValidationError
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from django.core.urlresolvers import reverse
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from django.db import transaction
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from django.http import HttpResponse
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from django.shortcuts import render, redirect
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from django.utils.safestring import mark_safe
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from django.utils.translation import ungettext, ugettext_lazy as _
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from orchestra.admin.forms import adminmodelformset_factory
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from orchestra.admin.utils import get_object_from_url, change_url
from orchestra.utils.html import html_to_pdf
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from .forms import SelectSourceForm
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from .helpers import validate_contact
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def download_bills(modeladmin, request, queryset):
if queryset.count() > 1:
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stringio = StringIO()
archive = zipfile.ZipFile(stringio, 'w')
for bill in queryset:
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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
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bill = queryset.get()
pdf = html_to_pdf(bill.html or bill.render(), pagination=bill.has_multiple_pages)
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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()
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if not validate_contact(request, bill):
return
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html = bill.html or bill.render()
return HttpResponse(html)
view_bill.verbose_name = _("View")
view_bill.url_name = 'view'
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@transaction.atomic
def close_bills(modeladmin, request, queryset):
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queryset = queryset.filter(is_open=True)
if not queryset:
messages.warning(request, _("Selected bills should be in open state"))
return
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for bill in queryset:
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if not validate_contact(request, bill):
return
SelectSourceFormSet = adminmodelformset_factory(modeladmin, SelectSourceForm, extra=0)
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formset = SelectSourceFormSet(queryset=queryset)
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if request.POST.get('post') == 'generic_confirmation':
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formset = SelectSourceFormSet(request.POST, request.FILES, queryset=queryset)
if formset.is_valid():
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transactions = []
for form in formset.forms:
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source = form.cleaned_data['source']
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transaction = form.instance.close(payment=source)
if transaction:
transactions.append(transaction)
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for bill in queryset:
modeladmin.log_change(request, bill, 'Closed')
messages.success(request, _("Selected bills have been closed"))
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if transactions:
num = len(transactions)
if num == 1:
url = change_url(transactions[0])
else:
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url = reverse('admin:payments_transaction_changelist')
url += 'id__in=%s' % ','.join([str(t.id) for t in transactions])
context = {
'url': url,
'num': num,
}
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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,
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num)
messages.success(request, mark_safe(message))
return
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opts = modeladmin.model._meta
context = {
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'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',
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'action_value': 'close_bills',
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'display_objects': [],
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'queryset': queryset,
'opts': opts,
'app_label': opts.app_label,
'action_checkbox_name': helpers.ACTION_CHECKBOX_NAME,
'formset': formset,
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'obj': get_object_from_url(modeladmin, request),
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}
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return render(request, 'admin/orchestra/generic_confirmation.html', context)
close_bills.verbose_name = _("Close")
close_bills.url_name = 'close'
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def send_bills(modeladmin, request, queryset):
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for bill in queryset:
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if not validate_contact(request, bill):
return
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num = 0
for bill in queryset:
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bill.send()
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modeladmin.log_change(request, bill, 'Sent')
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num += 1
messages.success(request, ungettext(
_("One bill has been sent."),
_("%i bills have been sent.") % num,
num))
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send_bills.verbose_name = lambda bill: _("Resend" if getattr(bill, 'is_sent', False) else "Send")
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send_bills.url_name = 'send'
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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)
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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]
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# Validate
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for order, lines in group.items():
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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.")
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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
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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
})
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def move_lines(modeladmin, request, queryset, action=None):
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# Validate
target = request.GET.get('target')
if not target:
# select target
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context = {}
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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)