app.py

import gradio as gr
from tool import LinkupSearchTool  # Assuming this is your tool class

def run_search(query, depth, api_key):
    if not query or not depth or not api_key:
        return "❌ All fields are required."
    
    try:
        # Initialize tool ONLY when we have the API key
        tool = LinkupSearchTool(linkup_api_key=api_key)  # Pass API key to constructor
        return tool.forward(query=query, depth=depth)
    except Exception as e:
        return f"❌ Error: {str(e)}"

with gr.Blocks() as demo:
    gr.Markdown("## 🔍 Linkup Web Search Tool")
    
    with gr.Row():
        query_input = gr.Textbox(label="Search Query", placeholder="e.g. AI trends in 2024")
        depth_input = gr.Dropdown(label="Search Depth", choices=["standard", "deep"], value="standard")
        api_key_input = gr.Textbox(label="Linkup API Key", type="password")
    
    output = gr.Markdown()
    btn = gr.Button("Search", interactive=True)
    
    btn.click(
        fn=run_search,
        inputs=[query_input, depth_input, api_key_input],
        outputs=output
    )
    
    def enable_submit(q, d, k):
        return gr.Button.update(interactive=bool(q.strip() and d and k.strip()))
    
    query_input.change(enable_submit, [query_input, depth_input, api_key_input], [btn])
    depth_input.change(enable_submit, [query_input, depth_input, api_key_input], [btn])
    api_key_input.change(enable_submit, [query_input, depth_input, api_key_input], [btn])

demo.launch()