app.py

import gradio as gr
import os
import logging
from openai import OpenAI

css = """
.gradio-container {
    max-width: min(90vw, 800px) !important;
    margin: 0 auto !important;
    display: flex !important;
}

@keyframes rainbow {
    0% { background: hsl(0, 60%, 70%); }
    16% { background: hsl(60, 60%, 70%); }
    33% { background: hsl(120, 60%, 70%); }
    50% { background: hsl(180, 60%, 70%); }
    66% { background: hsl(240, 60%, 70%); }
    83% { background: hsl(300, 60%, 70%); }
    100% { background: hsl(360, 60%, 70%); }
}

#rainbow-btn {
    background: #e4e4e7;
    color: #27272a !important;
}

#rainbow-btn:hover {
    animation: rainbow 3s linear infinite !important;
}

h1 {
    color: #1f2937 !important;
    font-size: 2.5em !important;
    font-weight: 600 !important;
    font-family: "Helvetica Neue", Arial, "Segoe UI", Roboto, sans-serif !important;
    text-align: center !important;
    margin: 20px 0 !important;
    border-radius: 0 !important;
    background: transparent !important;
    text-shadow: none !important;
}
"""

# Configure logging
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)

def generate_prompt(request: gr.Request):
    try:
        session_id = request.session_hash

        # Read the system prompt from file
        system_prompt = os.environ.get("SYSTEM_PROMPT")
        api_key = os.environ.get("OPENAI_API_KEY")

        # Validate required environment variables
        if not system_prompt:
            logger.error("SYSTEM_PROMPT environment variable not set")
            return "⚠️  Service temporarily unavailable. Please try again later."

        if not api_key:
            logger.error("OPENAI_API_KEY environment variable not set")
            return "⚠️  Service temporarily unavailable. Please try again later."

        # Initialize OpenAI client
        client = OpenAI(api_key=api_key)

        # Make API call
        logger.info(f"Making OpenAI API request - Session: {session_id}")
        response = client.chat.completions.create(
            model="gpt-3.5-turbo",
            messages=[
                {"role": "system", "content": system_prompt},
                {"role": "user", "content": "Generate a new system prompt."}
            ],
            max_tokens=500,
            temperature=0.9
        )

        logger.info(f"API request successful - Session: {session_id} - tokens used: {response.usage.total_tokens}")
        return response.choices[0].message.content

    except Exception as e:
        logger.error(f"API request failed - Session: {session_id} - Error: {str(e)}")
        return "⚠️  Could not generate a prompt. No fish today."

with gr.Blocks(
    title="Prompt Roulette",
    css=css
) as demo:
    gr.Markdown("# PROMPT ROULETTE")
    gr.Markdown(
        "Tired of talking to the same boring AI every day?\n\n"
        "Tired of friendly exclamation points (!), 👋 emojis, and bullet point lists?\n\n"
    )
    gr.Markdown(
        "**Try a new system prompt!**\n\n"
        "Click the button below to discover a new side of your favorite AI assistant. "
        "Once you find a prompt you like, paste it at the top of your next AI conversation to bring it to life!"
    )

    generate_btn = gr.Button("Spin the wheel!", variant="primary", elem_id="rainbow-btn")
    output_text = gr.Textbox(
        label="Your New Prompt",
        lines=8,
        max_lines=15,
        interactive=False,
        show_copy_button=True
    )

    generate_btn.click(
        fn=generate_prompt,
        outputs=[output_text]
    )

    gr.Markdown(
        "**MCP-compatible!** Simply add `n8cha/prompt-roulette` to your list in https://hf.co/settings/mcp to expose it as a convenient tool for your AI conversation partner."
    )

if __name__ == "__main__":
    demo.queue(
        max_size=5,  # Maximum number of requests in queue
        default_concurrency_limit=1  # Maximum concurrent API calls
    )

    demo.launch(mcp_server=True)