import replicate
import requests
import os

def virtual_try_on(garm_img_url, human_img_url, garment_des):
    """
    Perform virtual try-on using the IDM-VTON model on Replicate.
    
    Args:
        garm_img_url (str): Path or URL of the garment image
        human_img_url (str): Path or URL of the human image
        garment_des (str): Description of the garment
        
    Returns:
        str: Path to the saved output image
    """
    # Convert local files to data URLs if needed
    def file_to_data_url(file_path):
        if file_path.startswith('http'):
            response = requests.get(file_path)
            img_data = response.content
        else:
            with open(file_path, 'rb') as f:
                img_data = f.read()
        import base64
        encoded = base64.b64encode(img_data).decode('utf-8')
        return f"data:image/png;base64,{encoded}"
    
    # Prepare input for the model
    input_data = {
        "garm_img": file_to_data_url(garm_img_url),
        "human_img": file_to_data_url(human_img_url),
        "garment_des": garment_des
    }
    
    print("Sending request to IDM-VTON model...")
    # Run the model on Replicate
    output = replicate.run(
        "cuuupid/idm-vton:c871bb9b046607b680449ecbae55fd8c6d945e0a1948644bf2361b3d021d3ff4",
        input=input_data
    )
    
    # Save the output image
    output_path = "output.jpg"
    with open(output_path, "wb") as file:
        file.write(output.read())
    
    print(f"Virtual try-on complete! Output saved to {output_path}")
    return output_path

# Example usage
if __name__ == "__main__":
    # Example inputs
    garm_img = "https://replicate.delivery/pbxt/KgwTlZyFx5aUU3gc5gMiKuD5nNPTgliMlLUWx160G4z99YjO/sweater.webp"
    human_img = "https://replicate.delivery/pbxt/KgwTlhCMvDagRrcVzZJbuozNJ8esPqiNAIJS3eMgHrYuHmW4/KakaoTalk_Photo_2024-04-04-21-44-45.png"
    garment_des = "cute pink top"
    
    # Check if REPLICATE_API_TOKEN is set
    if "REPLICATE_API_TOKEN" not in os.environ:
        print("Warning: REPLICATE_API_TOKEN environment variable is not set.")
        print("Please set it using: export REPLICATE_API_TOKEN='your_token_here'")
    
    try:
        output_path = virtual_try_on(garm_img, human_img, garment_des)
        print(f"Success! Try-on image saved to {output_path}")
    except Exception as e:
        print(f"Error occurred: {e}")