from fastapi import FastAPI, UploadFile, File, Form, HTTPException
from fastapi.middleware.cors import CORSMiddleware
from parser_logic import extract_text_from_stream, analyze_resume
import logging

logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)

app = FastAPI()

app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_methods=["POST"],
    allow_headers=["*"],
)

@app.post("/analyze")
async def process_resume(
    file: UploadFile = File(...),
    job_description: str = Form(None)  # Optional form field
):
    if file.content_type != "application/pdf":
        raise HTTPException(400, "Invalid file type. Only PDF allowed.")
    
    try:
        content = await file.read()
        text = extract_text_from_stream(content)
        
        if not text.strip():
            raise HTTPException(400, "PDF text extraction failed.")
            
        # Pass both text and JD to the logic
        result = analyze_resume(text, job_description)
        return result
        
    except Exception as e:
        logger.error(f"Server Error: {e}")
        raise HTTPException(500, str(e))