import gradio as gr
from ultralytics import YOLOv10 
import supervision as sv
import spaces
from huggingface_hub import hf_hub_download


def download_models(model_id):
    hf_hub_download("kadirnar/yolov10", filename=f"{model_id}", local_dir=f"./")
    return f"./{model_id}"
    
MODEL_PATH = 'yolov10n.pt'
model = YOLOv10(MODEL_PATH)
box_annotator = sv.BoxAnnotator()

@spaces.GPU(duration=200)
def detect(image, model_id, image_size, conf_threshold, iou_threshold):
    model_path = download_models(model_id)
    results = model(source=image, imgsz=image_size, iou=iou_threshold, conf=conf_threshold, verbose=False)[0]
    detections = sv.Detections.from_ultralytics(results)
    
    labels = [
        f"{model.model.names[class_id]} {confidence:.2f}" 
        for class_id, confidence in zip(detections.class_id, detections.confidence)
    ]
    annotated_image = box_annotator.annotate(image, detections=detections, labels=labels)

    return annotated_image

def app():
    with gr.Blocks():
        with gr.Row():
            with gr.Column():
                image = gr.Image(type="numpy", label="Image")
                
                model_id = gr.Dropdown(
                    label="Model",
                    choices=[
                        "yolov10n.pt",
                        "yolov10s.pt",
                        "yolov10m.pt",
                        "yolov10b.pt",
                        "yolov10x.pt",
                    ],
                    value="yolov10s.pt",
                )
                image_size = gr.Slider(
                    label="Image Size",
                    minimum=320,
                    maximum=1280,
                    step=32,
                    value=640,
                )
                conf_threshold = gr.Slider(
                    label="Confidence Threshold",
                    minimum=0.1,
                    maximum=1.0,
                    step=0.1,
                    value=0.25,
                )
                iou_threshold = gr.Slider(
                    label="IoU Threshold",
                    minimum=0.1,
                    maximum=1.0,
                    step=0.1,
                    value=0.45,
                )
                yolov10_infer = gr.Button(value="Detect Objects")

            with gr.Column():
                output_image = gr.Image(type="numpy", label="Annotated Image")

        yolov10_infer.click(
            fn=yolov10_inference,
            inputs=[
                image,
                model_id,
                image_size,
                conf_threshold,
                iou_threshold,
            ],
            outputs=[output_image],
        )

        gr.Examples(
            examples=[
                [
                    "images/example1.jpg",
                    "yolov10s.pt",
                    640,
                    0.25,
                    0.45,
                ],
                [
                    "images/example2.jpg",
                    "yolov10m.pt",
                    640,
                    0.25,
                    0.45,
                ],
            ],
            fn=yolov10_inference,
            inputs=[
                image,
                model_path,
                image_size,
                conf_threshold,
                iou_threshold,
            ],
            outputs=[output_image],
            cache_examples=True,
        )

gradio_app = gr.Blocks()
with gradio_app:
    gr.Markdown(
        """
        # YOLOv10: State-of-the-Art Object Detection
        """
    )
    gr.Markdown(
        """
        Detect objects in images using the YOLOv10 model. Select a pre-trained model, adjust the inference settings, and upload an image to see the detected objects.
        """
    )
    with gr.Row():
        gr.Markdown(
            """
            Follow me for more projects and updates:
            - [Twitter](https://twitter.com/kadirnar_ai)
            - [GitHub](https://github.com/kadirnar)
            - [LinkedIn](https://www.linkedin.com/in/kadir-nar/)
            - [HuggingFace](https://www.huggingface.co/kadirnar/)
            """
        )

    app()

gradio_app.launch(debug=True)