// panel_botonera.rs — Botonera remota

use gtk4::prelude::*;
use gtk4::{
    Align, Box as GtkBox, Button, Entry, FlowBox, Label, Orientation, ScrolledWindow, Separator,
};
use std::cell::RefCell;
use std::rc::Rc;

use crate::conexion::Conexion;
use crate::protocol::{BotonRemoto, MsgCliente};

#[derive(Clone)]
pub struct PanelBotonera {
    pub root: GtkBox,
    flow: FlowBox,
    conexion: Rc<RefCell<Option<Conexion>>>,
    botones: Rc<RefCell<Vec<BotonRemoto>>>,
}

impl PanelBotonera {
    pub fn nuevo(conexion: &Rc<RefCell<Option<Conexion>>>) -> Self {
        let root = GtkBox::new(Orientation::Vertical, 4);
        root.set_margin_top(6);
        root.set_margin_bottom(6);
        root.set_margin_start(6);
        root.set_margin_end(6);

        let toolbar = GtkBox::new(Orientation::Horizontal, 6);
        let btn_cargar  = Button::with_label("⟳ Cargar");
        let btn_guardar = Button::with_label("💾 Guardar");
        btn_guardar.add_css_class("suggested-action");
        toolbar.append(&btn_cargar);
        toolbar.append(&btn_guardar);
        root.append(&toolbar);
        root.append(&Separator::new(Orientation::Horizontal));

        let lbl = Label::new(Some(
            "Clic → reproducir en servidor.  Clic derecho → editar botón.",
        ));
        lbl.add_css_class("dim-label");
        lbl.set_margin_top(8);
        lbl.set_margin_bottom(8);
        root.append(&lbl);

        let flow = FlowBox::new();
        flow.set_max_children_per_line(8);
        flow.set_min_children_per_line(4);
        flow.set_selection_mode(gtk4::SelectionMode::None);
        flow.set_homogeneous(true);
        flow.set_row_spacing(4);
        flow.set_column_spacing(4);
        flow.set_margin_top(8);
        flow.set_margin_bottom(8);
        flow.set_margin_start(8);
        flow.set_margin_end(8);

        let scroll = ScrolledWindow::new();
        scroll.set_vexpand(true);
        scroll.set_child(Some(&flow));
        root.append(&scroll);

        let botones: Rc<RefCell<Vec<BotonRemoto>>> = Rc::new(RefCell::new(Vec::new()));

        {
            let conexion2 = conexion.clone();
            btn_cargar.connect_clicked(move |_| {
                if let Some(ref con) = *conexion2.borrow() {
                    con.enviar(MsgCliente::ObtenerBotonera);
                }
            });
        }
        {
            let botones2 = botones.clone();
            let conexion2 = conexion.clone();
            btn_guardar.connect_clicked(move |_| {
                let lista = botones2.borrow().clone();
                if let Some(ref con) = *conexion2.borrow() {
                    con.enviar(MsgCliente::GuardarBotonera { botones: lista });
                }
            });
        }

        PanelBotonera { root, flow, conexion: conexion.clone(), botones }
    }

    pub fn cargar_botones(&self, botones: &[BotonRemoto]) {
        while let Some(child) = self.flow.first_child() {
            self.flow.remove(&child);
        }
        *self.botones.borrow_mut() = botones.to_vec();

        for boton in botones {
            let btn = Button::with_label(&boton.etiqueta);
            btn.set_size_request(90, 60);
            btn.add_css_class("botonera-btn");

            let ruta = boton.ruta.clone();
            let conexion2 = self.conexion.clone();
            btn.connect_clicked(move |_| {
                if let Some(ref con) = *conexion2.borrow() {
                    con.enviar(MsgCliente::ReproducirAhora { ruta: ruta.clone() });
                }
            });

            // Clic derecho → editar
            let gc = gtk4::GestureClick::new();
            gc.set_button(3);
            let btn2 = btn.clone();
            let indice = boton.indice;
            let botones2 = self.botones.clone();
            gc.connect_pressed(move |_gc, _n, _x, _y| {
                let padre: Option<gtk4::Window> = btn2
                    .root()
                    .and_then(|r| r.downcast::<gtk4::Window>().ok());
                abrir_dialogo_editar_boton(
                    padre.as_ref(),
                    &btn2.label().unwrap_or_default(),
                    {
                        let b = botones2.borrow();
                        b.iter().find(|b| b.indice == indice)
                            .map(|b| b.ruta.clone())
                            .unwrap_or_default()
                    },
                    {
                        let btn3 = btn2.clone();
                        let b2 = botones2.clone();
                        move |nueva_lbl, nueva_ruta| {
                            btn3.set_label(&nueva_lbl);
                            if let Some(b) = b2.borrow_mut().iter_mut().find(|b| b.indice == indice) {
                                b.etiqueta = nueva_lbl;
                                b.ruta = nueva_ruta;
                            }
                        }
                    },
                );
            });
            btn.add_controller(gc);

            self.flow.insert(&btn, -1);
        }
    }

    pub fn set_activo(&self, activo: bool) {
        self.flow.set_sensitive(activo);
    }
}

fn abrir_dialogo_editar_boton<F: Fn(String, String) + 'static>(
    padre: Option<&gtk4::Window>,
    etiqueta_actual: &str,
    ruta_actual: String,
    on_accept: F,
) {
    let win = gtk4::Window::new();
    win.set_title(Some("Editar botón"));
    win.set_modal(true);
    win.set_resizable(false);
    if let Some(p) = padre { win.set_transient_for(Some(p)); }

    let vbox = GtkBox::new(Orientation::Vertical, 8);
    vbox.set_margin_top(12);
    vbox.set_margin_bottom(12);
    vbox.set_margin_start(16);
    vbox.set_margin_end(16);

    let f1 = GtkBox::new(Orientation::Horizontal, 8);
    f1.append(&Label::new(Some("Etiqueta:")));
    let e_lbl = Entry::new();
    e_lbl.set_text(etiqueta_actual);
    e_lbl.set_hexpand(true);
    f1.append(&e_lbl);
    vbox.append(&f1);

    let f2 = GtkBox::new(Orientation::Horizontal, 8);
    f2.append(&Label::new(Some("Ruta:")));
    let e_ruta = Entry::new();
    e_ruta.set_text(&ruta_actual);
    e_ruta.set_hexpand(true);
    f2.append(&e_ruta);
    vbox.append(&f2);

    let fila_btn = GtkBox::new(Orientation::Horizontal, 8);
    fila_btn.set_halign(Align::End);
    fila_btn.set_margin_top(8);
    let btn_cancel = Button::with_label("Cancelar");
    let btn_ok     = Button::with_label("Aceptar");
    btn_ok.add_css_class("suggested-action");
    fila_btn.append(&btn_cancel);
    fila_btn.append(&btn_ok);
    vbox.append(&fila_btn);

    win.set_child(Some(&vbox));
    let on_accept = Rc::new(on_accept);
    {
        let win2 = win.clone();
        let e_lbl2 = e_lbl.clone();
        let e_ruta2 = e_ruta.clone();
        let oa2 = on_accept.clone();
        btn_ok.connect_clicked(move |_| {
            on_accept(e_lbl2.text().to_string(), e_ruta2.text().to_string());
            win2.close();
        });
    }
    {
        let win2 = win.clone();
        btn_cancel.connect_clicked(move |_| { win2.close(); });
    }
    win.present();
}