initial commit

src/elm/services/MailingService.py

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+import logging
+from decimal import Decimal
+from email.message import EmailMessage
+from asyncio import sleep
+
+import aiosmtplib
+
+from elm.services.ConfigurationService import ConfigurationService
+from elm.types.User import User
+
+logger = logging.getLogger(__name__.split(".")[-1])
+logger.setLevel(logging.DEBUG)
+
+class MailingService:
+    def __init__(self, configuration_service: ConfigurationService):
+        self._configuration_service = configuration_service
+        self._config = self._configuration_service.get_mailing_service_configuration()
+
+    async def send_email(self, subject: str, body: str, receiver: str) -> None:
+        if self._configuration_service.DEV_MODE_ACTIVE:
+            logger.info(f"Skipped sending mail to {receiver} because demo mode is active.")
+            logger.info(f"Subject: {subject}")
+            logger.info(f"Receiver: {receiver}")
+            logger.info(f"Body: {body}")
+            await sleep(1)
+            return
+
+        try:
+            message = EmailMessage()
+            message["From"] = self._config.sender
+            message["To"] = receiver
+            message["Subject"] = subject
+            message.set_content(body)
+
+            await aiosmtplib.send(
+                message,
+                hostname=self._config.smtp_server,
+                port=self._config.smtp_port,
+                username=self._config.username,
+                password=self._config.password
+            )
+        except Exception as e:
+            logger.error(f"Failed to send email: {e}")
+
+    def generate_account_balance_added_mail_body(self, user: User, added_balance: Decimal, total_balance: Decimal) -> str:
+        return f"""
+        Hallo {user.user_name},
+        
+        deinem Account wurden {added_balance:.2f} € hinzugefügt. Dein neues Guthaben beträgt nun {total_balance:.2f} €.
+        
+        Wenn du zu dieser Aufladung Fragen hast, stehen wir dir in unserem Discord Server oder per Mail an {self._configuration_service.get_lan_info().organizer_mail} zur Verfügung.
+        
+        Liebe Grüße
+        Dein {self._configuration_service.get_lan_info().name} Team
+        """