first version of send mail with dummy backend and confirm action

cntmanage/flightslot/actions/send_email.py

@@ -0,0 +1,62 @@
+from django.conf import settings
+from django.contrib import messages
+from django.core.mail import EmailMultiAlternatives
+from django.http import HttpRequest
+from django.db.models.query import QuerySet
+from django.utils.safestring import SafeText
+from django.template.loader import render_to_string
+
+from ..models.students import Student
+
+from smtplib import SMTPException
+from email.mime.image import MIMEImage
+
+import os
+
+def send_mail_password(request: HttpRequest, queryset: QuerySet[Student]) -> None:
+    img: MIMEImage | None = None
+    try:
+        for d in settings.STATICFILES_DIRS:
+            filename = os.path.join(d, "cantorair.png")
+            if not os.path.exists(filename):
+                continue
+            with open(filename, "rb") as f:
+                img = MIMEImage(f.read())
+                img.add_header("Content-ID", "logo_image")
+                img.add_header("Content-Disposition", "inline", filename="cantorair.png")
+                break
+    except:
+        messages.error(request=request, message="Cannot Load CantorAir Logo")
+        return
+
+    for student in queryset:
+        if not student.user or not student.email: # skip student if has not an associated user
+            continue
+        try:
+            username: str = student.user.username
+            password: str = student.default_password()
+            address: str = student.email
+
+            text_message: str = f"Cantor Air Flight Scheduler\nUsername:{username}\nPassword:{password}\n"
+
+            html_message: SafeText = render_to_string(
+                template_name="email/mail.html",
+                context={"username": username, "password": password}
+            )
+
+            mail: EmailMultiAlternatives = EmailMultiAlternatives(
+                subject="CantorAir Flight Scheduler 🛫",
+                from_email="ema.trabattoni@gmail.com",
+                body=text_message, 
+                to = [ address ]
+            )
+            mail.attach(filename=img)
+            mail.attach_alternative(content=html_message, mimetype="text/html")
+            mail.send()
+        except SMTPException as e:
+            messages.error(request=request, message=f"Send Mail error: {e.strerror}")
+        except Exception as e:
+            messages.error(request=request, message=f"General Error: {e}")
+        else:
+            messages.success(request=request, message=f"Email sent to {student.surname} {student.name[0].upper()}. -> {mail.to.pop()}")
+    return

cntmanage/flightslot/admins/student_adm.py

@@ -10,13 +10,15 @@ from import_export.tmp_storages import CacheStorage
 from import_export.resources import ModelResource
 from import_export.forms import ConfirmImportForm, ImportForm
 
-from django_admin_action_forms import AdminActionFormsMixin, AdminActionForm, action_with_form
+from django_admin_action_forms import AdminActionFormsMixin, AdminActionForm, ActionForm, action_with_form
+from admin_confirm import AdminConfirmMixin, confirm_action
 
 from ..models.aircrafts import AircraftTypes
 from ..models.courses import Course
 from ..models.students import Student
 
 from ..actions.assign_aircraft import assign_aircraft
+from ..actions.send_email import send_mail_password
 
 from ..custom.colortag import course_color
 
@@ -64,17 +66,19 @@ class ChangeCourseForm(AdminActionForm):
 class ChangeAircraftForm(AdminActionForm):
     aircrafts = TypedMultipleChoiceField(choices=AircraftTypes)
 
-class StudentAdmin(ImportMixin, AdminActionFormsMixin, admin.ModelAdmin):
+
+class StudentAdmin(ImportMixin, AdminConfirmMixin, AdminActionFormsMixin, admin.ModelAdmin):
     model = Student
     list_display = ("surname", "name", "course", "course_color", "email", "phone", "username", "password", "active", )
     list_filter = ("course", "active", )
     search_fields = ("surname", "name", "phone", "email", )
-    actions = ("change_course", "deactivate_students", "change_aircraft", )
+    actions = ("change_course", "deactivate_students", "change_aircraft", "send_mail", )
     resource_classes = [StudentResource]
     confirm_form_class = StudentCustomConfirmImportForm
     tmp_storage_class = CacheStorage
     skip_admin_log = True
 
+    
     @admin.display(description="Color")
     def course_color(self, obj: Student) -> SafeText:
         if not obj.course:
@@ -111,6 +115,11 @@ class StudentAdmin(ImportMixin, AdminActionFormsMixin, admin.ModelAdmin):
         i, ac_types = assign_aircraft(queryset=queryset, data=data)
         messages.success(request, f"{i} Students updated to {ac_types}")
 
+    @admin.action(description="Send Access Credentials e-mail")
+    @confirm_action
+    def send_mail(self, request: HttpRequest, queryset: QuerySet[Student], data: Any) -> None:
+        send_mail_password(request=request, queryset=queryset)
+
     # Return the initial form for import confirmations, request course to user
     def get_confirm_form_initial(self, request: HttpRequest, import_form) -> Dict[str, Any]:
         initial: Dict[str, Any] = super().get_confirm_form_initial(request, import_form)