import gradio as gr
from transformers import AutoTokenizer, AutoModelForSeq2SeqLM

# Load tokenizer and model
tokenizer = AutoTokenizer.from_pretrained("hrshtsharma2012/NL2SQL-Picard-final")
model = AutoModelForSeq2SeqLM.from_pretrained("hrshtsharma2012/NL2SQL-Picard-final")

def generate_sql(query):
    input_text = "translate English to SQL: " + query
    inputs = tokenizer(input_text, return_tensors="pt", padding=True)
    outputs = model.generate(**inputs, max_length=512)
    sql_query = tokenizer.decode(outputs[0], skip_special_tokens=True)
    
    # Check if the output is a valid SQL query
    if not sql_query.lower().startswith("select"):
        return "The model did not generate a valid SQL query. Please try a different input or use a different model."
    
    return sql_query

# Create a Gradio interface
interface = gr.Interface(
    fn=generate_sql,
    inputs=gr.Textbox(lines=2, placeholder="Enter your natural language query here..."),
    outputs="text",
    title="NL to SQL with Picard",
    description="This model converts natural language queries into SQL. Enter your query!"
)

# Launch the app
if __name__ == "__main__":
    interface.launch()