app.py

from transformers import pipeline
import gradio as gr

USERNAME = "admin"
PASSWORD = "admin"

def login(user, pwd):
    return user == USERNAME and pwd == PASSWORD

# --- PIPELINE ---
ner_pipeline = pipeline(model="projecte-aina/roberta-base-ca-v2-cased-ner")

def ner(text):
    output = ner_pipeline(text)
    return {"text": text, "entities": output}

def neteja():
    return gr.update(value=""), gr.update(value=None)

# --- APP ---
with gr.Blocks(theme=gr.themes.Glass()) as demo:

    # ---------- LOGIN ----------
    with gr.Group(visible=True) as login_group:
        gr.Markdown("## Inici de sessió")
        user = gr.Textbox(label="Usuari")
        pwd = gr.Textbox(label="Contrasenya", type="password")
        b3 = gr.Button("Entrar")

    # ---------- APLICACIÓ PRINCIPAL ----------
    with gr.Group(visible=False) as app_group:

        gr.Markdown(
        """
        # Reconeixement d'entitats nomenades en català  
        Escriu o copia un text i troba les seves entitats
        """)

        with gr.Row():
            with gr.Column():
                inp = gr.Textbox(label="text", placeholder="Escriu aquí...")
                with gr.Row():
                    b1 = gr.Button(value="Neteja")
                    b2 = gr.Button("Troba entitats", variant="primary")
            out = gr.HighlightedText(label="sortida")

        # Accions de la app
        b1.click(neteja, outputs=[inp, out])
        b2.click(ner, inputs=inp, outputs=out)

    # ---------- LÒGICA DEL LOGIN ----------
    def auth_button(u, p):
        if login(u, p):
            return gr.update(visible=False), gr.update(visible=True)
        else:
            return gr.update(), gr.update()

    b3.click(auth_button, inputs=[user, pwd], outputs=[login_group, app_group])

demo.launch()