use gtk4 as gtk;

use gtk::glib;
use gtk::prelude::*;

use crate::{
    app::{update, update::Msg, App},
    db,
    model::{event, event::Event},
};

pub async fn show(app: &App, event: Event, is_new: bool) {
    let dialog = gtk::Dialog::builder()
        .transient_for(&*app.window)
        .modal(true)
        .title(if is_new { "Ajouter" } else { "Modifier" })
        .css_classes(vec!["g-Form".to_string()])
        .build();

    let content_area = dialog.content_area();

    let vbox = gtk::Box::builder()
        .orientation(gtk::Orientation::Vertical)
        .build();
    vbox.add_css_class("g-Form__Inputs");
    content_area.append(&vbox);

    let name = entry(&event.name);
    vbox.append(&label("Événement"));
    vbox.append(&name);

    let date = entry(&event.date.format(event::DATE_FORMAT).to_string());
    vbox.append(&label("Jour"));
    vbox.append(&date);

    let start = entry(
        &event
            .start
            .map(event::pprint_time)
            .unwrap_or("".to_string()),
    );
    vbox.append(&label("Début"));
    vbox.append(&start);

    let end = entry(&event.end.map(event::pprint_time).unwrap_or("".to_string()));
    vbox.append(&label("Fin"));
    vbox.append(&end);

    let button = gtk::Button::builder()
        .label(if is_new { "Créer" } else { "Modifier" })
        .margin_bottom(10)
        .build();
    vbox.append(&button);
    let conn = app.conn.clone();
    let tx = app.tx.clone();
    button.connect_clicked(glib::clone!(@weak dialog, @strong event => move |_| {
        match event::validate(event.id, date.buffer().text(), name.buffer().text(), start.buffer().text(), end.buffer().text()) {
            Some(new) => {
                match if is_new { db::insert(&conn, &new) } else { db::update(&conn, &new) } {
                    Ok(_) => {
                        let msg = if is_new { Msg::AddEvent { new } } else { Msg::UpdateEvent { old: event.clone(), new } };
                        update::send(tx.clone(), msg);
                        dialog.close()
                    },
                    Err(_) => ()
                }
            },
            None => ()
        }
    }));

    if !is_new {
        let button = gtk::Button::builder().label("Supprimer").build();
        vbox.append(&button);
        let conn = app.conn.clone();
        let tx = app.tx.clone();
        button.connect_clicked(glib::clone!(@weak dialog => move |_| {
            match db::delete(&conn, &event.id) {
                Ok(_) => {
                    update::send(tx.clone(), Msg::DeleteEvent { event: event.clone() });
                    dialog.close()
                },
                Err(_) => ()
            }
        }));
    }

    dialog.run_future().await;
}

fn entry(text: &str) -> gtk::Entry {
    gtk::Entry::builder().text(text).margin_bottom(10).build()
}

fn label(text: &str) -> gtk::Label {
    gtk::Label::builder()
        .label(text)
        .halign(gtk::Align::Start)
        .margin_bottom(5)
        .build()
}