UI.py

# UI.py
import gradio as gr
import numpy as np 

def create_interface(process_function_for_button):
    with gr.Blocks(theme='gradio/soft') as demo: 
        gr.Markdown("# Modelado de Bioprocesos con Ecuaciones Personalizadas y Análisis por IA")

        with gr.Row():
            with gr.Column(scale=2):
                gr.Markdown("### Carga de Datos y Configuración General")
                file_input = gr.File(label="Subir archivo Excel (.xlsx)", file_types=[".xlsx"])
                
                show_legend_ui = gr.Checkbox(label="Mostrar leyenda en gráficos", value=True)
                show_params_ui = gr.Checkbox(label="Mostrar parámetros ajustados en gráficos", value=True)
                legend_position_ui = gr.Dropdown(
                    label="Posición de la leyenda",
                    choices=['best', 'upper right', 'upper left', 'lower right', 'lower left', 'center left', 'center right', 'lower center', 'upper center', 'center'],
                    value='best', # Asegura que el valor por defecto es uno de los choices
                    type="value" # Especificar el tipo de retorno si es ambiguo
                )
            with gr.Column(scale=1):
                gr.Markdown("### Conteo de Ecuaciones a Probar")
                biomass_eq_count_ui = gr.Number(label="Biomasa (1-3)", value=1.0, minimum=1.0, maximum=3.0, step=1.0, precision=0) # Usar float para gr.Number
                substrate_eq_count_ui = gr.Number(label="Sustrato (1-3)", value=1.0, minimum=1.0, maximum=3.0, step=1.0, precision=0)
                product_eq_count_ui = gr.Number(label="Producto (1-3)", value=1.0, minimum=1.0, maximum=3.0, step=1.0, precision=0)

        # --- Sección de Biomasa ---
        with gr.Accordion("Ecuaciones y Parámetros de Biomasa", open=True):
            with gr.Row():
                with gr.Column():
                    biomass_eq1_ui = gr.Textbox(label="Ecuación de Biomasa 1", value="Xm * (1 - exp(-um * (t - t_lag)))", lines=2, placeholder="Ej: Xm * (1 - exp(-um * (t - t_lag)))")
                    biomass_param1_ui = gr.Textbox(label="Parámetros Biomasa 1", value="Xm, um, t_lag", info="Nombres, coma sep. Use 't' para tiempo. 'X_val' para X(t) en S/P.")
                    biomass_bound1_ui = gr.Textbox(label="Límites Biomasa 1", value="(0, np.inf), (0, np.inf), (0, np.inf)", info="Formato: (low,high). Use np.inf.")
                
                biomass_col2_container = gr.Column(visible=False) 
                with biomass_col2_container:
                    biomass_eq2_ui = gr.Textbox(label="Ecuación de Biomasa 2", value="X0 * exp(um * t)", lines=2)
                    biomass_param2_ui = gr.Textbox(label="Parámetros Biomasa 2", value="X0, um")
                    biomass_bound2_ui = gr.Textbox(label="Límites Biomasa 2", value="(0, np.inf), (0, np.inf)")
                
                biomass_col3_container = gr.Column(visible=False)
                with biomass_col3_container:
                    biomass_eq3_ui = gr.Textbox(label="Ecuación de Biomasa 3", lines=2, value="")
                    biomass_param3_ui = gr.Textbox(label="Parámetros Biomasa 3", value="")
                    biomass_bound3_ui = gr.Textbox(label="Límites Biomasa 3", value="")
        
        # --- Sección de Sustrato ---
        with gr.Accordion("Ecuaciones y Parámetros de Sustrato", open=True):
            gr.Markdown("Para Sustrato/Producto, usa `X_val` para X(t). Ejemplo: `S0 - (X_val / YXS)` donde YXS es un parámetro.")
            with gr.Row():
                with gr.Column():
                    substrate_eq1_ui = gr.Textbox(label="Ecuación de Sustrato 1", value="S0 - (X_val / YXS) - mS * t", lines=2)
                    substrate_param1_ui = gr.Textbox(label="Parámetros Sustrato 1", value="S0, YXS, mS")
                    substrate_bound1_ui = gr.Textbox(label="Límites Sustrato 1", value="(0, np.inf), (1e-9, np.inf), (0, np.inf)")
                
                substrate_col2_container = gr.Column(visible=False)
                with substrate_col2_container:
                    substrate_eq2_ui = gr.Textbox(label="Ecuación de Sustrato 2", lines=2, value="")
                    substrate_param2_ui = gr.Textbox(label="Parámetros Sustrato 2", value="")
                    substrate_bound2_ui = gr.Textbox(label="Límites Sustrato 2", value="")
                
                substrate_col3_container = gr.Column(visible=False)
                with substrate_col3_container:
                    substrate_eq3_ui = gr.Textbox(label="Ecuación de Sustrato 3", lines=2, value="")
                    substrate_param3_ui = gr.Textbox(label="Parámetros Sustrato 3", value="")
                    substrate_bound3_ui = gr.Textbox(label="Límites Sustrato 3", value="")

        # --- Sección de Producto ---
        with gr.Accordion("Ecuaciones y Parámetros de Producto", open=True):
            with gr.Row():
                with gr.Column():
                    product_eq1_ui = gr.Textbox(label="Ecuación de Producto 1", value="P0 + YPX * X_val + mP * t", lines=2)
                    product_param1_ui = gr.Textbox(label="Parámetros Producto 1", value="P0, YPX, mP")
                    product_bound1_ui = gr.Textbox(label="Límites Producto 1", value="(0, np.inf), (0, np.inf), (0, np.inf)")
                
                product_col2_container = gr.Column(visible=False)
                with product_col2_container:
                    product_eq2_ui = gr.Textbox(label="Ecuación de Producto 2", lines=2, value="")
                    product_param2_ui = gr.Textbox(label="Parámetros Producto 2", value="")
                    product_bound2_ui = gr.Textbox(label="Límites Producto 2", value="")
                
                product_col3_container = gr.Column(visible=False)
                with product_col3_container:
                    product_eq3_ui = gr.Textbox(label="Ecuación de Producto 3", lines=2, value="")
                    product_param3_ui = gr.Textbox(label="Parámetros Producto 3", value="")
                    product_bound3_ui = gr.Textbox(label="Límites Producto 3", value="")

        # Lógica para mostrar/ocultar campos de ecuación dinámicamente
        def update_eq_visibility(count_value):
            count = int(count_value) 
            return gr.update(visible=count >= 2), gr.update(visible=count >= 3)

        biomass_eq_count_ui.change(fn=update_eq_visibility, inputs=biomass_eq_count_ui, outputs=[biomass_col2_container, biomass_col3_container])
        substrate_eq_count_ui.change(fn=update_eq_visibility, inputs=substrate_eq_count_ui, outputs=[substrate_col2_container, substrate_col3_container])
        product_eq_count_ui.change(fn=update_eq_visibility, inputs=product_eq_count_ui, outputs=[product_col2_container, product_col3_container])
        
        submit_button = gr.Button("Procesar y Analizar", variant="primary", scale=1)
        
        gr.Markdown("## Resultados del Análisis")
        with gr.Row():
            image_output = gr.Image(label="Gráfico Generado", type="pil", scale=2, show_download_button=True, height=600)
            with gr.Column(scale=3):
                analysis_output = gr.Markdown(label="Análisis del Modelo por IA")
        
        all_inputs_for_button = [
            file_input,
            biomass_eq1_ui, biomass_eq2_ui, biomass_eq3_ui,
            biomass_param1_ui, biomass_param2_ui, biomass_param3_ui,
            biomass_bound1_ui, biomass_bound2_ui, biomass_bound3_ui,
            substrate_eq1_ui, substrate_eq2_ui, substrate_eq3_ui,
            substrate_param1_ui, substrate_param2_ui, substrate_param3_ui,
            substrate_bound1_ui, substrate_bound2_ui, substrate_bound3_ui,
            product_eq1_ui, product_eq2_ui, product_eq3_ui,
            product_param1_ui, product_param2_ui, product_param3_ui,
            product_bound1_ui, product_bound2_ui, product_bound3_ui,
            legend_position_ui,
            show_legend_ui,
            show_params_ui,
            biomass_eq_count_ui,
            substrate_eq_count_ui,
            product_eq_count_ui
        ]
        outputs_for_button = [image_output, analysis_output]

        submit_button.click(
            fn=process_function_for_button,
            inputs=all_inputs_for_button,
            outputs=outputs_for_button
        )

        # Inicializar visibilidad usando demo.load
        def set_initial_visibility_on_load_wrapper(b_c_val, s_c_val, p_c_val):
            b_c_int, s_c_int, p_c_int = int(b_c_val), int(s_c_val), int(p_c_val)
            
            b_vis2_upd, b_vis3_upd = update_eq_visibility(b_c_int)
            s_vis2_upd, s_vis3_upd = update_eq_visibility(s_c_int)
            p_vis2_upd, p_vis3_upd = update_eq_visibility(p_c_int)
            
            # Devolver los resultados de gr.update para cada componente de salida
            return b_vis2_upd, b_vis3_upd, s_vis2_upd, s_vis3_upd, p_vis2_upd, p_vis3_upd

        demo.load(
            fn=set_initial_visibility_on_load_wrapper, 
            inputs=[biomass_eq_count_ui, substrate_eq_count_ui, product_eq_count_ui], 
            outputs=[
                biomass_col2_container, biomass_col3_container, 
                substrate_col2_container, substrate_col3_container, 
                product_col2_container, product_col3_container
            ]
        )
    return demo