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import gradio as gr
import random
import base64
import os
from openai import OpenAI

# OpenAI API Key aus Environment Variable oder Hugging Face Secret
client = OpenAI(api_key=os.environ["OPENAI_API_KEY"])


# --- Funktion für Bot-Antwort ---
def response(user_message, history):
    messages = [{"role": "system", "content": """System Prompt – Five Stars (freundlich, gemütlich, interaktiv)...
    """}]
    
    for msg in history:
        messages.append({"role": msg["role"], "content": msg["content"]})
    
    messages.append({"role": "user", "content": user_message})
    
    response = client.chat.completions.create(
        model="gpt-4o-mini",
        messages=messages,
        temperature=0.7,
        max_tokens=2000
    )
    
    return response.choices[0].message.content

# --- Hintergrundbilder als Base64 ---
def get_base64_image(image_path):
    try:
        with open(image_path, "rb") as f:
            encoded = base64.b64encode(f.read()).decode()
            return f"data:image/png;base64,{encoded}"
    except:
        return None

# --- Haupt-App ---
def main():
    background_images = [
        "./background_images/nosferatu.png", 
        "./background_images/aftersun.png", 
        "./background_images/anora.png",
        "./background_images/arrival.png",
        "./background_images/batman.png",
        "./background_images/blackswan.png",
        "./background_images/bladerunner.png",
        "./background_images/bonesandall.png",
        "./background_images/city-of-god.jpg",
        "./background_images/drive.png",
        "./background_images/dune.png",
        "./background_images/fightclub.png",
        "./background_images/handmaiden.png",
        "./background_images/her.png",
        "./background_images/lalaland.png",
        "./background_images/lighthouse.png",
        "./background_images/littlewomen.png",
        "./background_images/memento.png",
        "./background_images/pastlives.png",
        "./background_images/spiderman.png",
    ]
    
    selected_bg = random.choice(background_images)
    bg_base64 = get_base64_image(selected_bg)
    
    background_style = f"background: url('{bg_base64}') center/cover no-repeat !important;" if bg_base64 else "background: #4a0000 !important;"
    
    # --- CSS ---
    custom_css = f"""
    * {{
        font-family: "Helvetica Neue", Helvetica, Arial, sans-serif !important;
    }}
    .gradio-container {{
        {background_style}
        min-height: 100vh;
    }}
    #chat-container {{
        max-width: 800px;
        margin: 0 auto;
        padding: 40px 20px;
        height: 500px;
    }}
    #logo-container {{
        text-align: center;
        margin-bottom: 30px;
    }}
    #chatbot-box {{
        background: rgba(255, 255, 255, 0.95);
        border-radius: 25px;
        padding: 30px;
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
        backdrop-filter: blur(10px);
    }}
    footer {{ display: none !important; }}
    """
    
    with gr.Blocks() as demo:
        with gr.Column(elem_id="chat-container"):
            # Logo
            with gr.Row(elem_id="logo-container"):
                gr.Image(
                    "./logo/five-star.png",
                    show_label=False,
                    height=130,
                    width=130,
                    interactive=False
                )
            
            # Chatbot
            with gr.Column(elem_id="chatbot-box"):
                chatbot = gr.Chatbot(
                    value=[{"role":"assistant","content":"Hey! Willkommen bei Fivestars! Was kann ich für dich tun?"}],
                    show_label=False,
                    height=400,
                    elem_id="chatbot"
                )
                
                with gr.Row():
                    msg = gr.Textbox(placeholder="...Stelle eine Frage", show_label=False, scale=11)
                    submit = gr.Button("➤", scale=1)
        
        # --- Event Handling ---
        def user_message(user_msg, history):
            return "", history + [{"role": "user", "content": user_msg}]
        
        def bot_response(history):
            user_msg = history[-1]["content"]
            bot_msg = response(user_msg, history)
            history.append({"role": "assistant", "content": bot_msg})
            return history
        
        msg.submit(user_message, [msg, chatbot], [msg, chatbot]).then(bot_response, chatbot, chatbot)
        submit.click(user_message, [msg, chatbot], [msg, chatbot]).then(bot_response, chatbot, chatbot)
    
    # --- Launch mit CSS & Theme für Gradio 6.x ---
    demo.launch(css=custom_css, theme=gr.themes.Soft())

if __name__ == "__main__":
    main()