From 1ad4970cbca43e65eed5385337e18695a0142da9 Mon Sep 17 00:00:00 2001
From: Roman <romanfen1997@gmail.com>
Date: Tue, 7 Oct 2025 19:44:28 +0200
Subject: [PATCH] Add decision mailers for applicants and staff with
 approval/denial templates

---
 input/mailer.py | 87 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 input/mailer.py

diff --git a/input/mailer.py b/input/mailer.py
new file mode 100644
index 0000000..d3df345
--- /dev/null
+++ b/input/mailer.py
@@ -0,0 +1,87 @@
+from django.conf import settings
+from django.core.mail import EmailMultiAlternatives
+from django.template.loader import get_template
+from django.utils.html import strip_tags
+from .models import TYPE_CHOICES
+
+
+def _type_labels(choice: str):
+    """
+    Resolve the human-readable type label.
+    Returns (HTML label, plain text label).
+    """
+    html = TYPE_CHOICES.get(choice, choice)
+    plain = strip_tags(str(html))
+    return html, plain
+
+
+def _decision_context(obj, choice_code: str) -> dict:
+    """
+    Build a minimal, consistent context for decision mails (applicant & staff).
+    Also exposes the full project object as 'project' for template access.
+    """
+    type_html, type_plain = _type_labels(choice_code)
+    realname = getattr(obj, 'realname', '') or getattr(obj, 'email', '')
+    return {
+        'data': {
+            'realname': realname,
+            'typestring': type_html,
+            'typestring_plain': type_plain,
+            'name': getattr(obj, 'name', None),
+        },
+        'project': obj,
+    }
+
+
+def send_decision_mail(obj, choice_code: str, granted: bool) -> None:
+    """
+    Send a decision email to the applicant after manual approval/denial.
+    Uses: input/approval_granted.(txt|html) or input/approval_denied.(txt|html)
+    """
+    recipient = getattr(obj, 'email', None)
+    if not recipient:
+        return  # no recipient -> skip
+
+    ctx = _decision_context(obj, choice_code)
+    base = 'input/approval_granted' if granted else 'input/approval_denied'
+
+    project_name = getattr(obj, 'name', None) or '(ohne Projektnamen)'
+    decision_word = 'bewilligt' if granted else 'abgelehnt'
+    subject = f'Deine Förderanfrage „{project_name}“ – {decision_word}'
+
+    txt = get_template(f'{base}.txt').render(ctx)
+    html = get_template(f'{base}.html').render(ctx)
+
+    msg = EmailMultiAlternatives(
+        subject,
+        txt,
+        settings.IF_EMAIL,
+        [recipient],
+    )
+    msg.attach_alternative(html, 'text/html')
+    msg.send()
+
+
+def send_staff_decision_mail(obj, choice_code: str, granted: bool) -> None:
+    """
+    Send a decision email to the internal team (staff) after approval/denial.
+    Uses: input/approval_granted_staff.(txt|html) or input/approval_denied_staff.(txt|html)
+    """
+    ctx = _decision_context(obj, choice_code)
+    base = 'input/approval_granted_staff' if granted else 'input/approval_denied_staff'
+
+    project_name = getattr(obj, 'name', None) or '(ohne Projektnamen)'
+    decision_word = 'bewilligt' if granted else 'abgelehnt'
+    subject = f'Entscheidung: {project_name} ({decision_word})'
+
+    txt = get_template(f'{base}.txt').render(ctx)
+    html = get_template(f'{base}.html').render(ctx)
+
+    msg = EmailMultiAlternatives(
+        subject,
+        txt,
+        settings.IF_EMAIL,
+        [settings.IF_EMAIL],
+    )
+    msg.attach_alternative(html, 'text/html')
+    msg.send()