import streamlit as st
import cv2
import tempfile
import os
import numpy as np
from ultralytics import YOLO
from PIL import Image

def process_video(video_path, model):
    cap = cv2.VideoCapture(video_path)
    temp_output = tempfile.NamedTemporaryFile(delete=False, suffix='.mp4')
    fourcc = cv2.VideoWriter_fourcc(*'mp4v')
    out = cv2.VideoWriter(temp_output.name, fourcc, cap.get(cv2.CAP_PROP_FPS), 
                          (int(cap.get(cv2.CAP_PROP_FRAME_WIDTH)), int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT))))
    
    while cap.isOpened():
        ret, frame = cap.read()
        if not ret:
            break
        
        results = model(frame)
        for result in results:
            for box in result.boxes:
                x1, y1, x2, y2 = map(int, box.xyxy[0])
                label = result.names[int(box.cls[0])]
                conf = float(box.conf[0])
                cv2.rectangle(frame, (x1, y1), (x2, y2), (0, 255, 0), 2)
                cv2.putText(frame, f'{label}: {conf:.2f}', (x1, y1 - 10), 
                            cv2.FONT_HERSHEY_SIMPLEX, 0.5, (0, 255, 0), 2)
        
        out.write(frame)
    
    cap.release()
    out.release()
    return temp_output.name

def main():
    st.set_page_config(page_title="Bottle Label Checker", page_icon="🍾")
    st.title("Bottle Label Checking System using YOLO & Gemini")
    
    uploaded_video = st.file_uploader("Upload a video", type=["mp4", "avi", "mov", "mkv"])
    
    if uploaded_video is not None:
        temp_video_path = os.path.join(tempfile.gettempdir(), uploaded_video.name)
        with open(temp_video_path, "wb") as f:
            f.write(uploaded_video.read())
        
        st.video(temp_video_path)
        
        model = YOLO("yolov8n.pt")  # Load YOLO model
        
        if st.button("Process Video"):
            st.write("Processing video... This may take some time.")
            output_path = process_video(temp_video_path, model)
            
            st.video(output_path)
            st.success("Processing complete!")
            
            with open(output_path, "rb") as file:
                st.download_button("Download Processed Video", file, file_name="processed_video.mp4", mime="video/mp4")

if __name__ == "__main__":
    main()