import gradio as gr
from transformers import AutoTokenizer
import ast
model_path = "models/"

import gradio as gr

# Available models
MODELS = ["Meta-Llama-3.1-8B"]

def process_input(input_type, input_value, model_name):
    # Initialize tokenizer
    tokenizer = AutoTokenizer.from_pretrained(model_path+model_name)
    
    if input_type == "Text":
        # Tokenize the text
        tokens = tokenizer.tokenize(input_value)
        token_ids = tokenizer.encode(input_value)
        
        # Create output strings
        # tokens_str = [f"{i+1}. {token}" for i, token in enumerate(tokens)]
        # token_ids_str = " ".join(map(str, token_ids))
        
        return f"Total tokens: {len(tokens)}", tokens, token_ids
    
    elif input_type == "Token IDs":
        try:
            token_ids = ast.literal_eval(input_value)
            # Convert string of token IDs to list of integers
            # token_ids = list(map(int, input_value.split()))
            # Convert token IDs back to text
            text = tokenizer.decode(token_ids)
            print("The decoded text",text)
            # Tokenize the text to get individual tokens
            
            # Create output strings
            return f"Total tokens: {len(token_ids)}", text, input_value
        except ValueError:
            return "Error", "Invalid input. Please enter space-separated integers for Token IDs.", ""

# Create Gradio interface
iface = gr.Interface(
    fn=process_input,
    inputs=[
        gr.Radio(["Text", "Token IDs"], label="Input Type", value="Text"),
        gr.Textbox(lines=5, label="Input"),
        gr.Dropdown(choices=MODELS, label="Select Model")
    ],
    outputs=[
        gr.Textbox(label="Token Count"),
        gr.Textbox(label="Tokens", lines=10),
        gr.Textbox(label="Token IDS", lines=5)
    ],
    title="LLM Tokenization and Token ID Converter",
    description="Enter text or token IDs and select a model to see the conversion results."
)

# Launch the app
iface.launch()