save user queries in redis so that user can refresh the page and still come back to their latest task

crawler/api/app.py

@@ -16,6 +16,7 @@ from fastapi import Depends, FastAPI, HTTPException, Query
 from api.auth import User
 from models.listing import QueryParameters
 from rec import districts
+from redis_repository import RedisRepository
 from repositories.listing_repository import ListingRepository
 from repositories.listing_repository import ListingRepository
 from database import engine
@@ -27,6 +28,7 @@ from alembic import command
 from alembic.config import Config
 from contextlib import asynccontextmanager
 from celery.exceptions import TaskRevokedError
+from celery_app import app as celery_app
 
 load_dotenv()
 logger = logging.getLogger("uvicorn")
@@ -86,6 +88,9 @@ async def refresh_listings(
         args=(query_parameters.model_dump_json(),),
         expires=expiry_time,
     )
+
+    redis_repository = RedisRepository.instance()
+    redis_repository.add_task_for_user(user, task.id)
     return {"task_id": task.id}
 
 
@@ -107,6 +112,15 @@ async def get_task_status(
     }
 
 
+@app.get("/api/tasks_for_user")
+async def get_tasks_for_user(
+    user: Annotated[User, Depends(get_current_user)],
+) -> list[str]:
+    redis_repository = RedisRepository.instance()
+    user_tasks = redis_repository.get_tasks_for_user(user)
+    return user_tasks
+
+
 @app.get("/api/get_districts")
 async def get_districts(
     user: Annotated[User, Depends(get_current_user)],