import streamlit as st
import google.generativeai as genai
import os
from dotenv import load_dotenv
from styles import get_custom_css
from formulas import offer_formulas

# Set page to wide mode to use full width
st.set_page_config(layout="wide")

# Load environment variables
load_dotenv()

# Configure Google Gemini API
genai.configure(api_key=os.getenv('GOOGLE_API_KEY'))
model = genai.GenerativeModel('gemini-2.0-flash')

# Initialize session state variables if they don't exist
if 'submitted' not in st.session_state:
    st.session_state.submitted = False
if 'offer_result' not in st.session_state:
    st.session_state.offer_result = ""

# Hide Streamlit menu and footer
st.markdown("""
<style>
#MainMenu {visibility: hidden;}
footer {visibility: hidden;}
header {visibility: hidden;}
</style>
""", unsafe_allow_html=True)

# Custom CSS
st.markdown(get_custom_css(), unsafe_allow_html=True)

# App title and description - centered and without emoji
st.markdown('<h1 style="text-align: center;">Great Offer Generator</h1>', unsafe_allow_html=True)
st.markdown('<h3 style="text-align: center;">Transform your skills into compelling offers!</h3>', unsafe_allow_html=True)

# Create two columns for layout - left column 40%, right column 60%
col1, col2 = st.columns([4, 6])

# Main input section in left column
with col1:
    skills = st.text_area('💪 Tus Habilidades', height=70, 
                        help='Lista tus habilidades y experiencia clave')
    product_service = st.text_area('🎯 Producto/Servicio', height=70,
                                help='Describe tu producto o servicio')

    # Accordion for additional settings
    with st.expander('⚙️ Configuración Avanzada'):
        target_audience = st.text_area('👥 Público Objetivo', height=70,
                                    help='Describe tu cliente o público ideal')
        
        # Selector de fórmula
        formula_type = st.selectbox(
            '📋 Tipo de Fórmula',
            options=list(offer_formulas.keys()),
            help='Selecciona el tipo de fórmula para tu oferta'
        )
        
        # Removed the "Ver detalles de la fórmula" expander section
        
        temperature = st.slider('🌡️ Nivel de Creatividad', min_value=0.0, max_value=2.0, value=0.7,
                            help='Valores más altos hacen que el resultado sea más creativo pero menos enfocado')

    # Generate button with callback
    def generate_offer():
        if not skills or not product_service:
            st.error('Por favor completa los campos de Habilidades y Producto/Servicio')
        else:
            # Set submitted flag to True
            st.session_state.submitted = True
            # Store input values in session state
            st.session_state.skills = skills
            st.session_state.product_service = product_service
            st.session_state.target_audience = target_audience
            st.session_state.temperature = temperature
            st.session_state.formula_type = formula_type
            
    st.button('Generar Oferta 🎉', on_click=generate_offer)

# Results column
with col2:
    # Check if form has been submitted
    if st.session_state.submitted:
        with st.spinner('Creando tu oferta perfecta...'):
            prompt = f"""Based on the following information, create a compelling offer using the {st.session_state.formula_type} formula:
            Skills: {st.session_state.skills}
            Product/Service: {st.session_state.product_service}
            Target Audience: {st.session_state.target_audience if st.session_state.target_audience else 'General audience'}
            
            Formula Description:
            {offer_formulas[st.session_state.formula_type]["description"]}
            
            Please create a professional and engaging offer that highlights the value proposition
            and appeals to the target audience. Include a clear call to action.
            
            IMPORTANT: Provide ONLY the final offer text. Do not include any explanations, labels, formatting instructions, or brackets like [Feature], [Benefit], [Meaning]. Do not include "Offer 1", "Offer 2" or any numbering. Do not explain the structure. Just provide the clean, ready-to-use offer text with a call to action at the end."""
            
            try:
                # Create generation config with temperature
                generation_config = genai.GenerationConfig(temperature=st.session_state.temperature)
                
                # Pass the generation config to generate_content
                response = model.generate_content(prompt, generation_config=generation_config)
                st.session_state.offer_result = response.text
                
                # Display result - without emoji
                st.markdown('### Oferta Generada')
                st.markdown(st.session_state.offer_result)
                
                # Add download button below the result with 80% width
                col_download, col_empty = st.columns([8, 2])
                with col_download:
                    st.download_button(
                        label="Descargar Oferta",
                        data=st.session_state.offer_result,
                        file_name="oferta_generada.txt",
                        mime="text/plain"
                    )
            except Exception as e:
                st.error(f'Ocurrió un error: {str(e)}')
                st.session_state.submitted = False

# Footer
st.markdown('---')
st.markdown('Made with ❤️ by Jesús Cabrera')