refactor: clean up main.py

server/main.py

 from flask import Flask
 from http.server import HTTPServer, BaseHTTPRequestHandler
-from consts import DB_NAME, COLLECTION, SSL_CERT_PATH, SSL_KEY_PATH, HOST, PORT
+from consts import SSL_CERT_PATH, SSL_KEY_PATH, HOST, PORT
 from map.get_markers import get_all_markers
 import ssl
 import keyboard
@@ -9,20 +9,6 @@ import sqlite3
 app = Flask(__name__)
 terminate_server = 0
 
-
-# Initialise SQLite database connection
-def init_database():
-    #try:
-        # Connect to the SQLite database
-        conn = sqlite3.connect('server/sql_db/icedb')
-
-        # Return the connection object
-        return conn
-    #except Exception as e:
-    #    print(f"Failed to connect to SQLite database: {e}")
-    #    return None
-
-
 class IceHTTPServer(HTTPServer):
     def __init__(self, server_address, handler_class, cursor):
         super().__init__(server_address, handler_class)
@@ -33,15 +19,15 @@ class IceHTTPServer(HTTPServer):
         return request, client_address
 
 
-# Define custom HTTP class
+# Custom HTTP class
 class IceHTTP(BaseHTTPRequestHandler):
     def __init__(self, request, client_address, server):
-        self.cursor = server.cursor  # Accessing cursor from server
+        self.cursor = server.cursor
         super().__init__(request, client_address, server)
 
     def do_GET(self):
         # Root path
-        if self.path == '/':
+        if self.path == '/': # NB: temporary root path behavior
             self.send_response(200)
             self.send_header("Content-type", "text/plain")
             self.end_headers()
@@ -54,7 +40,7 @@ class IceHTTP(BaseHTTPRequestHandler):
         elif self.path == '/get_valid_markers':  # NB: should be POST?
             get_all_markers(self, self.cursor, True)  # Get only valid markers
 
-# Listen for pressing of q key to terminate server
+# Terminate server on key press q
 def on_key_press(server, event, cursor, conn):
     if event.name == 'q':
         print('Terminating server...')
@@ -67,11 +53,11 @@ def on_key_press(server, event, cursor, conn):
 
 # Start a server on port 8443 using self defined HTTP class
 if __name__ == "__main__":
-    # Initialise database connection
-    conn = init_database()
-    cursor = conn.cursor()
-
     try:
+        # Initialize database connection
+        conn = sqlite3.connect('server/sql_db/icedb')
+        cursor = conn.cursor()
+
         # Load SSL certificate and private key
         ssl_context = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
         ssl_context.load_cert_chain(SSL_CERT_PATH, SSL_KEY_PATH)