Created utils folder which holds funcs to be called within the flask routes, added pseudo code to streams.py and user.py which are untested, data still needs to be jsonified to be sent to React

web_server/utils/user_utils.py

@@ -0,0 +1,55 @@
+from database.database import Database
+from typing import Optional
+from datetime import datetime
+
+def get_user_id(username: str) -> Optional[int]:
+    """
+    Returns user_id associated with given username
+    """
+    db = Database()
+    cursor = db.create_connection()
+    data = cursor.execute("SELECT user_id FROM user WHERE username = ?", (username,)).fetchone()
+    return data[0] if data else None
+
+def get_username(user_id: str) -> Optional[str]:
+    """
+    Returns username associated with given user_id
+    """
+    db = Database()
+    cursor = db.create_connection()
+    data = cursor.execute("SELECT username FROM user WHERE username = ?", (user_id,)).fetchone()
+    return data[0] if data else None
+
+def is_subscribed(user_id: int, streamer_id: int) -> bool:
+    """
+    Returns True if user is subscribed to a streamer else False
+    """
+    db = Database()
+    cursor = db.create_connection()
+    return bool(cursor.execute(
+        "SELECT 1 FROM subscribes WHERE user_id = ? AND streamer_id = ? AND expires > since", 
+        (user_id, streamer_id)
+    ).fetchone())
+
+def is_following(user_id: int, streamer_id:int) -> bool:
+    db = Database()
+    cursor = db.create_connection()
+    return bool(cursor.execute(
+        "SELECT 1 FROM follows WHERE user_id = ? AND streamer_id = ?", 
+        (user_id, streamer_id)
+    ).fetchone())
+
+def subscription_expiration(user_id: int, streamer_id: int) -> int:
+    """
+    Returns the amount of time left until user subscription to a streamer ends
+    """
+    db = Database()
+    cursor = db.create_connection()
+    data = cursor.execute(
+        "SELECT expires from subscriptions WHERE user_id = ? AND streamer_id = ? AND expires > since", (user_id,streamer_id)).fetchone()
+    remaining_time = 0
+    if data:
+        expiration_date = data[0]
+
+        remaining_time = (expiration_date - datetime.now()).seconds
+    return remaining_time