added barebones fastApi logic

app.py

@@ -1,7 +1,66 @@
-from fastapi import FastAPI
+from fastapi import FastAPI, HTTPException
+from fastapi.middleware.cors import CORSMiddleware
+from pydantic import BaseModel
+from typing import Dict
+import uuid
+from datetime import datetime
 
 app = FastAPI()
 
-@app.get("/")
-def greet_json():
-    return {"Hello": "World!"}
+# Enable CORS for React Native development
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+# In-memory "database" (replace with real DB in production)
+jobs_db: Dict[str, Dict] = {}
+
+class PostRequest(BaseModel):
+    query: str
+    topic: str
+    date: str  # Format: "DD-MM-YYYY to DD-MM-YYYY"
+
+@app.post("/index")
+async def create_job(request: PostRequest):
+    """Receive query/topic/date and return job ID"""
+    job_id = str(uuid.uuid4())
+    
+    # Store the job (simulating background processing)
+    jobs_db[job_id] = {
+        "status": "processing",
+        "request": request.dict(),
+        "created_at": datetime.now().isoformat(),
+        "result": None
+    }
+    
+    # Simulate processing completion after 5 seconds
+    # In real apps, use Celery/BackgroundTasks
+    jobs_db[job_id]["result"] = {
+        "query": request.query,
+        "topic": request.topic,
+        "date_interval": request.date,
+        "processed_data": f"Analysis result for {request.query} ({request.topic})"
+    }
+    jobs_db[job_id]["status"] = "completed"
+    
+    return {"status": "success", "id": job_id}
+
+@app.get("/loading")
+async def get_results(id: str):
+    """Check job status and return results if ready"""
+    if id not in jobs_db:
+        raise HTTPException(status_code=404, detail="Job not found")
+    
+    job = jobs_db[id]
+    
+    if job["status"] != "completed":
+        return {"status": "processing"}
+    
+    return {
+        "status": "completed",
+        "result": job["result"],
+        "request": job["request"]
+    }