use gtk::glib;
use gtk::prelude::*;
use super::state::{View, ViewManager};
use std::rc::Rc;

pub struct Welcome {
    vm : Rc<ViewManager>
}

impl View for Welcome {
    fn name(&self) -> &str {
        "welcome"
    }

    fn set_vm(&mut self, vm : Rc<ViewManager>) {
        self.vm = vm
    }

    fn make_current(&self) -> Option<gtk::Box> {
        let splash = gtk::Window::new(gtk::WindowType::Popup);
        splash.set_type_hint(gtk::gdk::WindowTypeHint::Splashscreen);
        splash.set_decorated(false);
        splash.set_position(gtk::WindowPosition::Center);
        splash.set_resizable(false);
        splash.set_size_request(300, 200);
        let center = gtk::Box::new(gtk::Orientation::Vertical, 10);
        let main = gtk::Box::new(gtk::Orientation::Horizontal, 10);
        let gen_button = gtk::Button::with_label("Generate");
        let load_button = gtk::Button::with_label("Load");

        main.pack_start(&gen_button,   true, true, 0);
        main.pack_start(&load_button,  true, true, 0);

        main.set_height_request(50);
        main.set_homogeneous(true);

        let bt = include_bytes!("icon.svg");
        let loader = gtk::gdk_pixbuf::PixbufLoader::new();
        loader.write(bt).ok();
        loader.set_size(100, 100);
        loader.close().ok();
        let pixbuf = loader.pixbuf().unwrap();
        let image = gtk::Image::from_pixbuf(Some(&pixbuf));

        center.pack_start(&image, true, true, 0);
        center.pack_start(&main, true, false, 0);

        self.vm.get_window().set_type_hint(gtk::gdk::WindowTypeHint::Splashscreen);

        let vm = Rc::clone(&self.vm);
        gen_button.connect_clicked(glib::clone!(@weak splash => move |_| {
            vm.set_current_view("generate");
            splash.close();
        }));

        let vm = Rc::clone(&self.vm);
        load_button.connect_clicked(glib::clone!(@weak splash => move |_| {
            vm.set_current_view("load");
            splash.close();
        }));

        let vm = Rc::clone(&self.vm);
        splash.connect_hide(move |_| {
            if vm.get_current_view() == "welcome" {
                vm.get_window().application().unwrap().quit();
            }
        });

        center.set_margin(10);
        splash.add(&center);
        splash.show_all();

        None
    }
}

impl Welcome {
    pub fn new() -> Self {
        Self { vm : Rc::new(ViewManager::empty()) }
    }
}