import os
import google.generativeai as genai
from dotenv import load_dotenv

# Load environment variables from .env file
load_dotenv()

# Configure the Gemini API
api_key = os.getenv("GEMINI_API_KEY")
if not api_key:
    raise ValueError("GEMINI_API_KEY not found in .env file or environment variables.")

genai.configure(api_key=api_key)

# Initialize the generative model
# Using gemini-1.0-pro, check documentation for other available models
model = genai.GenerativeModel('gemini-2.0-flash')

def get_gemini_response(prompt):
    """
    Sends a prompt to the Gemini API and returns the generated text response.

    Args:
        prompt (str): The complete prompt including context and user query.

    Returns:
        str: The text response from the Gemini model, or an error message.
    """
    try:
        response = model.generate_content(prompt)
        # Accessing the text part of the response
        # Handle potential cases where response might not have 'text' directly
        if response.parts:
             # Assuming the first part contains the text response
             # Adjust if the API response structure differs or has multiple parts
            return response.parts[0].text
        elif hasattr(response, 'text'):
             # Fallback if 'text' attribute exists directly (older versions/different models)
             return response.text
        else:
             # If no text found, return the raw response or an error indicator
             # Log the full response for debugging if necessary
             print(f"Unexpected Gemini response structure: {response}")
             return "Error: Could not extract text from Gemini response."

    except Exception as e:
        print(f"An error occurred while calling the Gemini API: {e}")
        # Consider more specific error handling based on potential API errors
        return f"Error communicating with AI assistant: {e}"

# Example usage (optional, for testing)
if __name__ == "__main__":
    print("Testing Gemini Client...")
    test_prompt = "Explain what an e-commerce order status 'Shipped' means in simple terms."
    print(f"\nSending prompt: {test_prompt}")
    response_text = get_gemini_response(test_prompt)
    print(f"\nGemini Response:\n{response_text}")