import os
import time
from typing import List, Tuple, Optional

import google.generativeai as genai
import gradio as gr
from PIL import Image

print("google-generativeai:", genai.__version__)

GOOGLE_API_KEY = os.environ.get("GOOGLE_API_KEY")

# UI Titles and Subtitles
TITLE = "<h1 align='center'>🚀 Gender Bias Detection App 🚀</h1>"
SUBTITLE = "<h2 align='center'>Detect and analyze gender-based discrimination in communication.</h2>"

IMAGE_WIDTH = 512

def preprocess_stop_sequences(stop_sequences: str) -> Optional[List[str]]:
    return [seq.strip() for seq in stop_sequences.split(",")] if stop_sequences else None

def preprocess_image(image: Image.Image) -> Image.Image:
    image_height = int(image.height * IMAGE_WIDTH / image.width)
    return image.resize((IMAGE_WIDTH, image_height))

def user(text_prompt: str, chatbot: List[Tuple[str, str]]):
    return "", chatbot + [[text_prompt, None]]

def bot(
    google_key: str,
    image_prompt: Optional[Image.Image],
    temperature: float,
    max_output_tokens: int,
    stop_sequences: str,
    top_k: int,
    top_p: float,
    chatbot: List[Tuple[str, str]]
):
    google_key = google_key or GOOGLE_API_KEY
    if not google_key:
        raise ValueError("GOOGLE_API_KEY is not set. Please set it up.")

    text_prompt = chatbot[-1][0]
    genai.configure(api_key=google_key)
    generation_config = genai.types.GenerationConfig(
        temperature=temperature,
        max_output_tokens=max_output_tokens,
        stop_sequences=preprocess_stop_sequences(stop_sequences),
        top_k=top_k,
        top_p=top_p,
        instructions="Analyze this text for gender-based discrimination, including implicit biases and stereotypes. Provide specific examples and explain why each example demonstrates bias.  Also, suggest tips for how to address or mitigate these biases within the text."
    )

    model_name = "gemini-1.5-pro-latest" 
    model = genai.GenerativeModel(model_name)
    inputs = [text_prompt] if image_prompt is None else [text_prompt, preprocess_image(image_prompt)]
    
    response = model.generate_content(inputs, stream=True, generation_config=generation_config)
    response.resolve()

    chatbot[-1][1] = ""
    for chunk in response:
        for i in range(0, len(chunk.text), 10):
            chatbot[-1][1] += chunk.text[i:i + 10]
            time.sleep(0.01)
            yield chatbot

# Gradio Interface
with gr.Blocks() as demo:
    gr.Markdown(TITLE)
    gr.Markdown(SUBTITLE)
    with gr.Row():
        text_input = gr.Textbox(placeholder="Enter text to analyze for gender-based discrimination")
        image_input = gr.Image(type="pil", label="Upload Image")
    submit_button = gr.Button("Analyze")
    chatbot_output = gr.Chatbot(label="Analysis Output")
    
    submit_button.click(
        fn=bot,
        inputs=[GOOGLE_API_KEY, image_input, 0.4, 1024, "END", 32, 1, chatbot_output],
        outputs=[chatbot_output]
    )

demo.launch()