Pluggable invoice transmission methods (#5020)

* Flexible invoice transmission

* UI work

* Add peppol and output

* API support

* Profile integration

* Simplify form for individuals

* Remove sent_to_customer usage

* more steps

* Revert "Bank transfer: Allow to send the invoice direclty to the accounting department (#2975)"

This reverts commit cea6c340be.

* minor fixes

* Fixes after rebase

* update stati

* Backend view

* Transmit and show status

* status, retransmission

* API retransmission

* More fields

* API docs

* Plugin docs

* Update migration

* Add missing license headers

* Remove dead code, fix current tests

* Run isort

* Update regex

* Rebase migration

* Fix migration

* Add tests, fix bugs

* Rebase migration

* Apply suggestion from @luelista

Co-authored-by: luelista <weller@rami.io>

* Apply suggestion from @luelista

Co-authored-by: luelista <weller@rami.io>

* Apply suggestion from @luelista

Co-authored-by: luelista <weller@rami.io>

* Apply suggestion from @luelista

Co-authored-by: luelista <weller@rami.io>

* Apply suggestion from @luelista

Co-authored-by: luelista <weller@rami.io>

* Make migration reversible

* Add TransmissionType.enforce_transmission

* Fix registries API usage after rebase

* Remove code I forgot to delete

* Update transmission status display depending on type

* Add testmode_supported

* Update src/pretix/static/pretixbase/js/addressform.js

Co-authored-by: luelista <weller@rami.io>

* Update src/pretix/static/pretixbase/js/addressform.js

Co-authored-by: luelista <weller@rami.io>

* Update src/pretix/static/pretixbase/js/addressform.js

Co-authored-by: luelista <weller@rami.io>

* New mechanism for non-required invoice forms

* Update src/pretix/base/invoicing/transmission.py

Co-authored-by: luelista <weller@rami.io>

* Declare testmode_supported for email

* Make transmission_email_other an implementation detail

* Fix failing tests and add new ones

* Update src/pretix/base/services/invoices.py

Co-authored-by: luelista <weller@rami.io>

* Add emails to email history

* Fix comma error

* More generic default email text

* Cleanup

* Remove "email invoices" button and refine logic

* Rebase migration

* Fix edge case

---------

Co-authored-by: luelista <weller@rami.io>

src/pretix/presale/templates/pretixpresale/event/checkout_confirm.html

@@ -111,6 +111,10 @@
                                     <dt>{% trans "Internal reference" %}</dt>
                                     <dd>{{ addr.internal_reference }}</dd>
                                 {% endif %}
+                                {% for k, v in addr.describe_transmission %}
+                                    <dt>{{ k }}</dt>
+                                    <dd>{{ v }}</dd>
+                                {% endfor %}
                             </dl>
                         </div>
                     </div>

src/pretix/presale/templates/pretixpresale/event/checkout_questions.html

@@ -40,7 +40,9 @@
                     {% if addresses_data %}
                         {{ addresses_data|json_script:"addresses_json" }}
                     {% endif %}
-                    <div id="invoice" class="profile-scope" data-profiles-id="addresses_json">
+                    <div id="invoice" class="profile-scope"
+                         data-profiles-id="addresses_json"
+                         data-address-information-url="{% url "js_helpers.address_form" %}?invoice=true&organizer={{ event.organizer.slug|urlencode }}&event={{ event.slug|urlencode }}">
                         <div class="panel-body">
                             {% if addresses_data %}
                                 <div class="form-group profile-select-container js-do-not-copy-answers">
@@ -78,7 +80,7 @@
                         </h3>
                     </summary>
                     <div>
-                        <div class="panel-body questions-form">
+                        <div class="panel-body questions-form" data-address-information-url="{% url "js_helpers.address_form" %}">
                             {% if event.settings.attendee_data_explanation_text and pos.item.ask_attendee_data %}
                                 {{ event.settings.attendee_data_explanation_text|rich_text }}
                             {% endif %}

src/pretix/presale/templates/pretixpresale/event/order.html

@@ -335,6 +335,10 @@
                                 <dt>{% trans "Internal Reference" %}</dt>
                                 <dd>{{ order.invoice_address.internal_reference }}</dd>
                             {% endif %}
+                            {% for k, v in order.invoice_address.describe_transmission %}
+                                <dt>{{ k }}</dt>
+                                <dd>{{ v }}</dd>
+                            {% endfor %}
                         {% endif %}
                     </dl>
                 </div>

src/pretix/presale/templates/pretixpresale/event/order_modify.html

@@ -35,14 +35,15 @@
                             </strong>
                         </h4>
                     </summary>
-                    <div id="invoice" class="panel-collapse">
+                    <div id="invoice" class="panel-collapse"
+                         data-address-information-url="{% url "js_helpers.address_form" %}?invoice=true&organizer={{ event.organizer.slug|urlencode }}&event={{ event.slug|urlencode }}">
                         <div class="panel-body">
                             {% if event.settings.invoice_address_explanation_text %}
                                 <div>
                                     {{ event.settings.invoice_address_explanation_text|rich_text }}
                                 </div>
                             {% endif %}
-                            {% bootstrap_form invoice_form layout="horizontal" %}
+                            {% bootstrap_form invoice_form layout="checkout" %}
                         </div>
                     </div>
                 </details>