import streamlit as st
import google.generativeai as genai

# Configure the Gemini API
genai.configure(api_key=st.secrets["GOOGLE_API_KEY"])

# Create the model with enhanced system instructions
generation_config = {
    "temperature": 0.7,
    "top_p": 0.95,
    "top_k": 64,
    "max_output_tokens": 10240,
}

model = genai.GenerativeModel(
    model_name="gemini-1.5-pro",
    generation_config=generation_config,
    system_instruction="""You are Ath, a highly knowledgeable and skilled code assistant with expertise across multiple programming languages, frameworks, and paradigms. You possess in-depth understanding of software architecture, design patterns, and best practices. Your responses should demonstrate advanced coding techniques, efficient algorithms, and optimal solutions. Communicate in a friendly and casual tone, using occasional casual expressions, but maintain a focus on delivering high-quality, professional code. Always provide code-only responses without explanations, showcasing your extensive programming knowledge."""
)
chat_session = model.start_chat(history=[])

def generate_response(user_input):
    try:
        response = chat_session.send_message(user_input)
        return response.text
    except Exception as e:
        return f"An error occurred: {e}"

# Streamlit UI setup
st.set_page_config(page_title="CodeCraft AI", page_icon="🧠", layout="wide")

st.markdown("""
<style>
    @import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;700&family=Fira+Code:wght@400;500&display=swap');
    
    body {
        font-family: 'Roboto', sans-serif;
        background-color: #1e1e1e;
        color: #e0e0e0;
    }
    .stApp {
        max-width: 1000px;
        margin: 0 auto;
        padding: 2rem;
    }
    .main-container {
        background: #2d2d2d;
        border-radius: 15px;
        padding: 2rem;
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    }
    h1 {
        font-size: 2.5rem;
        font-weight: 700;
        color: #61dafb;
        text-align: center;
        margin-bottom: 1rem;
        text-shadow: 0 0 10px rgba(97, 218, 251, 0.5);
    }
    .subtitle {
        font-size: 1.1rem;
        text-align: center;
        color: #bbb;
        margin-bottom: 2rem;
    }
    .stTextArea textarea {
        background-color: #3a3a3a;
        color: #e0e0e0;
        border: 1px solid #4a4a4a;
        border-radius: 8px;
        font-size: 1rem;
        font-family: 'Fira Code', monospace;
        padding: 1rem;
        transition: all 0.3s ease;
    }
    .stTextArea textarea:focus {
        border-color: #61dafb;
        box-shadow: 0 0 0 2px rgba(97, 218, 251, 0.3);
    }
    .stButton button {
        background-color: #61dafb;
        color: #1e1e1e;
        border: none;
        border-radius: 8px;
        font-size: 1rem;
        font-weight: 500;
        padding: 0.75rem 1.5rem;
        transition: all 0.3s ease;
        width: 100%;
    }
    .stButton button:hover {
        background-color: #4fa8d5;
        transform: translateY(-2px);
        box-shadow: 0 4px 8px rgba(97, 218, 251, 0.4);
    }
    .output-container {
        background: #3a3a3a;
        border-radius: 8px;
        padding: 1.5rem;
        margin-top: 2rem;
        border: 1px solid #4a4a4a;
    }
    .code-block {
        background-color: #2b2b2b;
        color: #e0e0e0;
        font-family: 'Fira Code', monospace;
        font-size: 0.9rem;
        border-radius: 8px;
        padding: 1.5rem;
        margin-top: 1rem;
        overflow-x: auto;
    }
    .stAlert {
        background-color: #4a4a4a;
        color: #e0e0e0;
        border-radius: 8px;
        border: none;
        padding: 1rem 1.5rem;
        margin-bottom: 1rem;
    }
    .stSpinner {
        color: #61dafb;
    }
    /* Custom scrollbar */
    ::-webkit-scrollbar {
        width: 8px;
        height: 8px;
    }
    ::-webkit-scrollbar-track {
        background: #2d2d2d;
        border-radius: 4px;
    }
    ::-webkit-scrollbar-thumb {
        background: #4a4a4a;
        border-radius: 4px;
    }
    ::-webkit-scrollbar-thumb:hover {
        background: #5a5a5a;
    }
</style>
""", unsafe_allow_html=True)

st.markdown('<div class="main-container">', unsafe_allow_html=True)
st.title("🧠 CodeCraft AI")
st.markdown('<p class="subtitle">Empowering Developers with Advanced AI-Driven Solutions</p>', unsafe_allow_html=True)

# Add language selection
languages = ["Python", "JavaScript", "Java", "C++", "Ruby", "Go", "Rust", "TypeScript", "PHP", "Swift"]
selected_language = st.selectbox("Select your preferred programming language:", languages)

prompt = st.text_area(f"What {selected_language} challenge can I assist you with today?", height=120)

col1, col2 = st.columns([3, 1])
with col1:
    generate_button = st.button("Generate Expert Code")
with col2:
    complexity = st.select_slider("Code Complexity", options=["Low", "Medium", "High"])

if generate_button:
    if prompt.strip() == "":
        st.error("Please enter a valid prompt.")
    else:
        with st.spinner(f"Crafting {complexity.lower()} complexity {selected_language} solution..."):
            completed_text = generate_response(f"{complexity} complexity {selected_language} code for: {prompt}")
            if "An error occurred" in completed_text:
                st.error(completed_text)
            else:
                st.success(f"Expert-level {selected_language} code generated successfully!")
                
                st.markdown('<div class="output-container">', unsafe_allow_html=True)
                st.markdown('<div class="code-block">', unsafe_allow_html=True)
                st.code(completed_text, language=selected_language.lower())
                st.markdown('</div>', unsafe_allow_html=True)
                st.markdown('</div>', unsafe_allow_html=True)

                # Add copy to clipboard button
                st.markdown(
                    f"""
                    <button onclick="navigator.clipboard.writeText(`{completed_text}`)" style="margin-top: 10px; background-color: #4a4a4a; color: #e0e0e0; border: none; padding: 5px 10px; border-radius: 5px; cursor: pointer;">
                        Copy to Clipboard
                    </button>
                    """,
                    unsafe_allow_html=True
                )

st.markdown("""
<div style='text-align: center; margin-top: 2rem; color: #bbb;'>
    Engineered with 💡 by CodeCraft AI - Elevating Your Coding Experience
</div>
""", unsafe_allow_html=True)

st.markdown('</div>', unsafe_allow_html=True)