added docstrings to event controller and moved constants

server/app/db/conn.py

@@ -9,6 +9,12 @@ class DBException(Exception):
 
 
 def connect_db() -> mysql.connector.MySQLConnection:
+    """
+    Connects to the MySQL database using credentials from the .env file.
+    Returns a MySQLConnection object which can be used by the database query layer.
+
+    Credential values are validated and an exception is raised if any are missing.
+    """
     load_dotenv()
     host = os.getenv("DB_HOST")
     user = os.getenv("DB_USER")

server/app/db/events.py

@@ -2,15 +2,9 @@ from asyncio import gather
 
 from icecream import ic
 
+from app.constants import EVENT_TABLE, SERIES_TABLE
 from app.db.base_queries import BaseQueries
-from app.models.event import (
-    EVENT_TABLE,
-    SERIES_TABLE,
-    Event,
-    EventSeries,
-    NewEvent,
-    NewEventSeries,
-)
+from app.models.event import Event, EventSeries, NewEvent, NewEventSeries
 
 
 class EventQueries(BaseQueries):

server/app/db/group.py

@@ -1,5 +1,5 @@
+from app.constants import GROUP_TABLE
 from app.db.base_queries import BaseQueries
-from app.models.group import GROUP_TABLE
 
 
 class GroupQueries(BaseQueries):

server/app/db/musicians.py

@@ -1,8 +1,8 @@
 from icecream import ic
 
+from app.constants import MUSICIAN_TABLE
 from app.db.base_queries import BaseQueries
 from app.db.conn import connect_db
-from app.models.musician import MUSICIAN_TABLE
 
 
 class MusicianQueries(BaseQueries):

server/app/db/users.py

@@ -1,5 +1,5 @@
+from app.constants import USER_TABLE
 from app.db.base_queries import BaseQueries
-from app.models.user import USER_TABLE
 
 
 class UserQueries(BaseQueries):