import os
import gradio as gr
from google import genai
from google.genai.types import GenerateContentConfig, GoogleSearch, Tool

# --- API Key setup ---
API_KEY = os.getenv("GOOGLE_API_KEY")
if not API_KEY:
    raise ValueError(
        "❌ Missing GOOGLE_API_KEY! "
        "Please add it as a secret in Hugging Face Spaces (Settings → Secrets)."
    )

# --- Initialize GenAI Client ---
client = genai.Client(api_key=API_KEY)
MODEL_ID = "gemini-2.0-flash"

# --- Friendly system instructions ---
SYSTEM_INSTRUCTION = """
You are a friendly and helpful AI assistant. 
Answer questions in a warm and easy-to-understand way, like explaining to a friend. 
Always include relevant information from Google Search if available, and never make up answers. 
Keep your tone polite, encouraging, and approachable.
"""

# --- Google Search query function ---
def google_search_query(question):
    try:
        google_search_tool = Tool(google_search=GoogleSearch())

        # Combine system instruction + user question
        prompt = f"{SYSTEM_INSTRUCTION}\n\nUser question: {question}"

        response = client.models.generate_content(
            model=MODEL_ID,
            contents=prompt,
            config=GenerateContentConfig(
                tools=[google_search_tool]
            )
        )

        ai_response = response.text
        search_results = response.candidates[0].grounding_metadata.search_entry_point.rendered_content

        return ai_response, search_results

    except Exception as e:
        return f"Error: {str(e)}", ""

# --- Gradio Interface ---
app = gr.Interface(
    fn=google_search_query,
    inputs=gr.Textbox(lines=2, label="Ask a Question"),
    outputs=[
        gr.Textbox(label="AI Response"),
        gr.HTML(label="Search Results"),
    ],
    title="🌟 Friendly Google Helper",
    description="Hi there! Ask me anything, and I’ll find answers from Google and explain them in a friendly, easy-to-understand way.",
)

# --- Launch app ---
if __name__ == "__main__":
    app.launch(server_name="0.0.0.0", server_port=7860, share=True)