Organiser profile billing settings option missing (fossasia#411)

* Implement billing settings form for organizer

* Fix flake8 in pipeline

* implement create and save payment_information

* Fix isort, flake8 in pipeline

* implement payment-information-v1

* src/pretix/control/views/organizer_views/organizer_view.py

* Code refactoring

* Code refactoring

* Remove payment_information attribute

* Implement tax validation

* Update code

* Update code

* Fix flake8 in pipeline

* Add pyvat package

* Fix flake8 in pipeline

* Latest code

* Fix flake8 in pipeline

* Add logger error

* Fix flake8 in pipeline

* Fix conflict pretix base migration

* Update pretix base migration

* Add logging information and modify error logging

* Add comment,save tax_id, show error and sucess message

* Update code

* Fix flake8 in pipeline

* move validation to clean method and move get_country_name to countries helper

pyproject.toml

@@ -97,6 +97,7 @@ dependencies = [
         'django-sso==3.0.2',
         'PyJWT~=2.8.0',
         'exhibitors @ git+https://github.com/fossasia/eventyay-tickets-exhibitors.git@master',
+        'pyvat==1.3.18',
 ]
 
 [project.optional-dependencies]

src/pretix/base/migrations/0003_alter_cachedcombinedticket_id_alter_cachedticket_id_and_more.py

@@ -0,0 +1,49 @@
+# Generated by Django 5.1.2 on 2024-10-31 09:30
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("pretixbase", "0003_event_is_video_creation_and_more"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="OrganizerBillingModel",
+            fields=[
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True, primary_key=True, serialize=False
+                    ),
+                ),
+                ("primary_contact_name", models.CharField(max_length=255)),
+                ("primary_contact_email", models.EmailField(max_length=255)),
+                ("company_or_organization_name", models.CharField(max_length=255)),
+                ("address_line_1", models.CharField(max_length=255)),
+                ("address_line_2", models.CharField(max_length=255)),
+                ("city", models.CharField(max_length=255)),
+                ("zip_code", models.CharField(max_length=255)),
+                ("country", models.CharField(max_length=255)),
+                ("preferred_language", models.CharField(max_length=255)),
+                ("tax_id", models.CharField(max_length=255)),
+                ("stripe_customer_id", models.CharField(max_length=255, null=True)),
+                (
+                    "stripe_payment_method_id",
+                    models.CharField(max_length=255, null=True),
+                ),
+                ("stripe_setup_intent_id", models.CharField(max_length=255, null=True)),
+                (
+                    "organizer",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="billing",
+                        to="pretixbase.organizer",
+                    ),
+                ),
+            ],
+        ),
+    ]

src/pretix/base/models/organizer.py

@@ -395,3 +395,92 @@ def get_events_with_permission(self, permission, request=None):
             return self.get_events_with_any_permission()
         else:
             return self.team.organizer.events.none()
+
+
+class OrganizerBillingModel(models.Model):
+    """
+    Billing model - support billing information for organizer
+    """
+
+    organizer = models.ForeignKey(
+        "Organizer", on_delete=models.CASCADE, related_name="billing"
+    )
+
+    primary_contact_name = models.CharField(
+        max_length=255,
+        verbose_name=_("Primary Contact Name"),
+    )
+
+    primary_contact_email = models.EmailField(
+        max_length=255,
+        verbose_name=_("Primary Contact Email"),
+    )
+
+    company_or_organization_name = models.CharField(
+        max_length=255,
+        verbose_name=_("Company or Organization Name"),
+    )
+
+    address_line_1 = models.CharField(
+        max_length=255,
+        verbose_name=_("Address Line 1"),
+    )
+
+    address_line_2 = models.CharField(
+        max_length=255,
+        verbose_name=_("Address Line 2"),
+    )
+
+    city = models.CharField(
+        max_length=255,
+        verbose_name=_("City"),
+    )
+
+    zip_code = models.CharField(
+        max_length=255,
+        verbose_name=_("Zip Code"),
+    )
+
+    country = models.CharField(
+        max_length=255,
+        verbose_name=_("Country"),
+    )
+
+    preferred_language = models.CharField(
+        max_length=255,
+        verbose_name=_("Preferred Language"),
+    )
+
+    tax_id = models.CharField(
+        max_length=255,
+        verbose_name=_("Tax ID"),
+    )
+
+    stripe_customer_id = models.CharField(
+        max_length=255,
+        verbose_name=_("Stripe Customer ID"),
+        blank=True,
+        null=True,
+    )
+
+    stripe_payment_method_id = models.CharField(
+        max_length=255,
+        verbose_name=_("Payment Method"),
+        blank=True,
+        null=True,
+    )
+
+    stripe_setup_intent_id = models.CharField(
+        max_length=255,
+        verbose_name=_("Setup Intent ID"),
+        blank=True,
+        null=True,
+    )
+
+    def delete(self, *args, **kwargs):
+        super().delete(*args, **kwargs)
+        self.organizer.cache.clear()
+
+    def save(self, *args, **kwargs):
+        super().save(*args, **kwargs)
+        self.organizer.cache.clear()

src/pretix/control/forms/organizer_forms/organizer_form.py

@@ -1,8 +1,14 @@
+import pyvat
 from django import forms
+from django.conf import settings
 from django.utils.translation import gettext_lazy as _
 
 from pretix.base.forms import I18nModelForm
-from pretix.base.models.organizer import Organizer
+from pretix.base.models.organizer import Organizer, OrganizerBillingModel
+from pretix.helpers.countries import CachedCountries, get_country_name
+from pretix.helpers.stripe_utils import (
+    create_stripe_customer, update_customer_info,
+)
 
 
 class OrganizerForm(I18nModelForm):
@@ -22,3 +28,177 @@ def clean_slug(self):
                 code='duplicate_slug',
             )
         return slug
+
+
+class BillingSettingsForm(forms.ModelForm):
+    class Meta:
+        model = OrganizerBillingModel
+        fields = [
+            "primary_contact_name",
+            "primary_contact_email",
+            "company_or_organization_name",
+            "address_line_1",
+            "address_line_2",
+            "zip_code",
+            "city",
+            "country",
+            "preferred_language",
+            "tax_id",
+        ]
+
+    primary_contact_name = forms.CharField(
+        label=_("Primary Contact Name"),
+        help_text=_(
+            "Please provide your name or the name of the person responsible for this account in your organization."
+        ),
+        required=True,
+        max_length=255,
+        widget=forms.TextInput(attrs={"placeholder": ""}),
+    )
+
+    primary_contact_email = forms.EmailField(
+        label=_("Primary Contact Email"),
+        help_text=_(
+            "We will use this email address for all communication related to your contract and billing, "
+            "as well as for important updates about your account and our services."
+        ),
+        required=True,
+        max_length=255,
+        widget=forms.TextInput(attrs={"placeholder": ""}),
+    )
+
+    company_or_organization_name = forms.CharField(
+        label=_("Company or Organization Name"),
+        help_text=_("Enter your organization’s legal name."),
+        required=True,
+        max_length=255,
+        widget=forms.TextInput(attrs={"placeholder": ""}),
+    )
+
+    address_line_1 = forms.CharField(
+        label=_("Address Line 1"),
+        help_text=_("Street address or P.O. box."),
+        required=True,
+        max_length=255,
+        widget=forms.TextInput(attrs={"placeholder": ""}),
+    )
+
+    address_line_2 = forms.CharField(
+        label=_("Address Line 2"),
+        help_text=_("Apartment, suite, unit, etc. (optional)."),
+        required=False,
+        max_length=255,
+        widget=forms.TextInput(attrs={"placeholder": ""}),
+    )
+
+    zip_code = forms.CharField(
+        label=_("Zip Code"),
+        help_text=_("Enter your postal code."),
+        required=True,
+        max_length=255,
+        widget=forms.TextInput(attrs={"placeholder": ""}),
+    )
+
+    city = forms.CharField(
+        label=_("City"),
+        help_text=_("Enter your city."),
+        required=True,
+        max_length=255,
+        widget=forms.TextInput(attrs={"placeholder": ""}),
+    )
+
+    country = forms.ChoiceField(
+        label=_("Country"),
+        help_text=_("Select your country."),
+        required=True,
+        choices=CachedCountries(),
+        initial="US",
+    )
+
+    preferred_language = forms.ChoiceField(
+        label=_("Preferred Language for Correspondence"),
+        help_text=_("Select your preferred language for all communication."),
+        required=True,
+    )
+
+    tax_id = forms.CharField(
+        label=_("Tax ID (e.g., VAT, GST)"),
+        help_text=_(
+            "If you are located in the EU, please provide your VAT ID. "
+            "Without this, we will need to charge VAT on our services and will not be able to issue reverse charge invoices."
+        ),
+        max_length=255,
+        widget=forms.TextInput(attrs={"placeholder": ""}),
+        required=False,
+    )
+
+    def __init__(self, *args, **kwargs):
+        self.organizer = kwargs.pop("organizer", None)
+        self.warning_message = None
+        super().__init__(*args, **kwargs)
+        selected_languages = [
+            (code, name)
+            for code, name in settings.LANGUAGES
+            if code in self.organizer.settings.locales
+        ]
+        self.fields["preferred_language"].choices = selected_languages
+        self.fields["preferred_language"].initial = self.organizer.settings.locale
+        self.set_initial_data()
+
+    def set_initial_data(self):
+        billing_settings = OrganizerBillingModel.objects.filter(
+            organizer_id=self.organizer.id
+        ).first()
+
+        if billing_settings:
+            for field in self.Meta.fields:
+                self.initial[field] = getattr(billing_settings, field, "")
+
+    def validate_vat_number(self, country_code, vat_number):
+        if country_code not in pyvat.VAT_REGISTRIES:
+            country_name = get_country_name(country_code)
+            self.warning_message = _("VAT number validation is not supported for {}".format(country_name))
+            return True
+        result = pyvat.is_vat_number_format_valid(vat_number, country_code)
+        return result
+
+    def clean(self):
+        cleaned_data = super().clean()
+        country_code = cleaned_data.get("country")
+        vat_number = cleaned_data.get("tax_id")
+
+        if vat_number and country_code:
+            country_name = get_country_name(country_code)
+            is_valid_vat_number = self.validate_vat_number(country_code, vat_number)
+            if not is_valid_vat_number:
+                self.add_error("tax_id", _("Invalid VAT number for {}".format(country_name)))
+
+    def save(self, commit=True):
+        instance = OrganizerBillingModel.objects.filter(
+            organizer_id=self.organizer.id
+        ).first()
+
+        if instance:
+            for field in self.Meta.fields:
+                setattr(instance, field, self.cleaned_data[field])
+
+            if commit:
+                update_customer_info(
+                    instance.stripe_customer_id,
+                    email=self.cleaned_data.get("primary_contact_email"),
+                    name=self.cleaned_data.get("primary_contact_name"),
+                )
+                instance.save()
+        else:
+            instance = OrganizerBillingModel(organizer_id=self.organizer.id)
+            for field in self.Meta.fields:
+                setattr(instance, field, self.cleaned_data[field])
+
+            if commit:
+                stripe_customer = create_stripe_customer(
+                    email=self.cleaned_data.get("primary_contact_email"),
+                    name=self.cleaned_data.get("primary_contact_name")
+                )
+                instance.stripe_customer_id = stripe_customer.id
+                instance.save()
+        return instance

src/pretix/control/navigation.py

@@ -409,6 +409,14 @@ def get_organizer_navigation(request):
                     }),
                     'active': 'organizer.webhook' in url.url_name,
                     'icon': 'bolt',
+                },
+                {
+                    "label": _("Billing settings"),
+                    "url": reverse(
+                        "control:organizer.settings.billing",
+                        kwargs={"organizer": request.organizer.slug},
+                    ),
+                    "active": url.url_name == "organizer.settings.billing",
                 }
             ]
         })

src/pretix/control/templates/pretixcontrol/base.html

@@ -9,6 +9,7 @@
 	<head>
 		<title>{% block title %}{% endblock %}{% if url_name != "index" %} :: {% endif %}
             {{ django_settings.INSTANCE_NAME }}</title>
+         <script src="https://js.stripe.com/v3/"></script>
 		{% compress css %}
     		<link rel="stylesheet" type="text/x-scss" href="{% static "pretixcontrol/scss/main.scss" %}" />
             <link rel="stylesheet" type="text/x-scss" href="{% static "lightbox/css/lightbox.scss" %}" />