https and ssl integration on the backend, frontend and started integration of logistics app as a separate frontend

backend/app/routers/dewar.py

@@ -1,6 +1,4 @@
-import os
-import tempfile  # <-- Add this import
-import xml.etree.ElementTree as ET
+import os, tempfile, time, random, hashlib
 from fastapi import APIRouter, HTTPException, status, Depends, Response
 from sqlalchemy.orm import Session, joinedload
 from typing import List
@@ -38,9 +36,12 @@ from app.crud import get_shipments, get_shipment_by_id  # Import CRUD functions
 
 router = APIRouter()
 
-def generate_unique_id(db: Session) -> str:
+def generate_unique_id(db: Session, length: int = 16) -> str:
     while True:
-        unique_id = str(uuid.uuid4())
+        base_string = f"{time.time()}{random.randint(0, 10 ** 6)}"
+        hash_object = hashlib.sha256(base_string.encode())
+        hash_digest = hash_object.hexdigest()
+        unique_id = ''.join(random.choices(hash_digest, k=length))
         existing_dewar = db.query(DewarModel).filter(DewarModel.unique_id == unique_id).first()
         if not existing_dewar:
             break