add table detection logic

app/app.py

@@ -84,7 +84,20 @@ def podStatus():
 # Index route
 @app.route('/')
 def index():
-    return redirect('/events')
+    # Check for empty database, go to setup page if not setup
+    global tablesSetup
+    required_tables = ['period', 'task', 'event', 'user']
+    for table in required_tables:
+        if table in db.metadata.tables:
+            tablesSetup = True
+        else:
+            tablesSetup = False
+            break
+    if not tablesSetup:
+        return ""
+    # Otherwise, redirect to /events
+    else:
+        return redirect('/events')
 
 # Authentication routes
 @app.route('/login', methods=['GET', 'POST'])