from fastapi import APIRouter, UploadFile, File
from fastapi.responses import JSONResponse
from services.extractor import extract_features
from services.summarizer import get_scores, get_selected_indices, save_summary_video
from uuid import uuid4
import time
import os

router = APIRouter()

@router.post("/summarize")

def summarize_video(video: UploadFile = File(...)):
    if not video.filename.lower().endswith(('.mp4', '.avi', '.mov', '.mkv')):
        return JSONResponse(content={"error": "Unsupported file format"}, status_code=400)

    extension = video.filename.split('.')[-1].lower()
    id = str(time.time()).replace('.', '_')
    filename = f"{id}.{extension}"
    processed_filename = f"{id}_processed.{extension}"
    filepath = os.path.join(os.getcwd(), "static", filename)
    processed_filepath = os.path.join(os.getcwd(), "static", processed_filename)
    url = f"/static/{processed_filename}"

    print("\n-----------> Saving Video Locally ....")
    with open(filepath, "wb") as f:
        f.write(video.file.read())

    print("\n-----------> Extracting Features ....")
    features, picks = extract_features(filepath)

    print("\n-----------> Getting Scores ....")
    scores = get_scores(features)

    print("\n-----------> Selecting Indices ....")
    selected = get_selected_indices(scores, picks)

    print("\n-----------> Saving Video ....")
    save_summary_video(filepath, selected, processed_filepath)

    print("\n-----------> Returning Response ....")
    return JSONResponse(content={
        "message": "Summarization complete",
        "summary_video_url": url
    })