feat: add email service and appointment management module with configuration settings

Web/modules/terminplaner/__init__.py

@@ -1 +1 @@
-print("hello")
+# Web.modules package initialization

Web/modules/terminplaner/executive.py

@@ -0,0 +1,43 @@
+"""
+Class for all funktions of the executive -> Lehrer
+"""
+import datetime
+import emailservice.email as mail_service
+import Web.modules.database.termine as termin
+import Web.modules.database.settings as cfg
+from tenant import get_tenant_context
+
+def new(date_start: str, date_end: str, time_span: list, slots: int, slot_lenght: int, user: str, mail: list=[], note:str="") -> str:
+    """
+    Generates a link for the executive to send to his clients to book a time Slot
+    
+    Input:
+    - date_start: start of the time frae area
+    - date_end: end of the time frame area
+    - time_span: Time window for the days as a list [(first day Time Frame), (second day Time frame), (third etc.)]
+    - slots: amount of slots that are available
+    - slot_lenght: the lenght of a slot in minutes
+
+    Output:
+    - link: The link for the user to send to the clients
+    """
+    id = termin.add(date_start, date_end, time_span, slots, slot_lenght, user, mail, note)
+
+    tenant_context = get_tenant_context()
+    subdomain = ''
+    if tenant_context:
+        subdomain = getattr(tenant_context, 'subdomain', '') or getattr(tenant_context, 'tenant_id', '') or ''
+
+    host = f"https://{subdomain}.invario.eu" if subdomain else "invario.eu"
+    link = host + "/terminplaner/client" + "?" + "client_id=" + id 
+    subject = f"Terminanfrage von {user}"
+    note_link = note + f"Bitte klicken sie auf den folgenden Link um einen Termin zu vereinbaren: {link}"
+    mail_service.send(mail, subject, note_link)
+    return link
+    
+        
+def book_slot(id, date, start_time):
+    """
+    
+    """
+    termin.update()