use std::cell::{Cell, RefCell};

#[cfg(windows)]
use std::net::TcpStream;
#[cfg(unix)]
use std::os::unix::net::UnixStream;

use adw::subclass::prelude::*;
use adw::{prelude::*, ActionRow, PreferencesGroup, ToastOverlay};
use glib::subclass::InitializingObject;
use gtk::glib::clone;
use gtk::{gdk, gio, glib, Button, CompositeTemplate, Entry, Label, ListBox};

use crate::config::DEFAULT_PORT;

#[derive(CompositeTemplate, Default)]
#[template(resource = "/de/feschber/LanMouse/window.ui")]
pub struct Window {
    #[template_child]
    pub port_edit_apply: TemplateChild<Button>,
    #[template_child]
    pub port_edit_cancel: TemplateChild<Button>,
    #[template_child]
    pub client_list: TemplateChild<ListBox>,
    #[template_child]
    pub client_placeholder: TemplateChild<ActionRow>,
    #[template_child]
    pub port_entry: TemplateChild<Entry>,
    #[template_child]
    pub hostname_label: TemplateChild<Label>,
    #[template_child]
    pub toast_overlay: TemplateChild<ToastOverlay>,
    #[template_child]
    pub capture_emulation_group: TemplateChild<PreferencesGroup>,
    #[template_child]
    pub capture_status_row: TemplateChild<ActionRow>,
    #[template_child]
    pub emulation_status_row: TemplateChild<ActionRow>,
    #[template_child]
    pub input_emulation_button: TemplateChild<Button>,
    #[template_child]
    pub input_capture_button: TemplateChild<Button>,
    pub clients: RefCell<Option<gio::ListStore>>,
    #[cfg(unix)]
    pub stream: RefCell<Option<UnixStream>>,
    #[cfg(windows)]
    pub stream: RefCell<Option<TcpStream>>,
    pub port: Cell<u16>,
    pub capture_active: Cell<bool>,
    pub emulation_active: Cell<bool>,
}

#[glib::object_subclass]
impl ObjectSubclass for Window {
    // `NAME` needs to match `class` attribute of template
    const NAME: &'static str = "LanMouseWindow";
    const ABSTRACT: bool = false;

    type Type = super::Window;
    type ParentType = adw::ApplicationWindow;

    fn class_init(klass: &mut Self::Class) {
        klass.bind_template();
        klass.bind_template_callbacks();
    }

    fn instance_init(obj: &InitializingObject<Self>) {
        obj.init_template();
    }
}

#[gtk::template_callbacks]
impl Window {
    #[template_callback]
    fn handle_add_client_pressed(&self, _button: &Button) {
        self.obj().request_client_create();
    }

    #[template_callback]
    fn handle_copy_hostname(&self, button: &Button) {
        if let Ok(hostname) = hostname::get() {
            let display = gdk::Display::default().unwrap();
            let clipboard = display.clipboard();
            clipboard.set_text(hostname.to_str().expect("hostname: invalid utf8"));
            button.set_icon_name("emblem-ok-symbolic");
            button.set_css_classes(&["success"]);
            glib::spawn_future_local(clone!(
                #[weak]
                button,
                async move {
                    glib::timeout_future_seconds(1).await;
                    button.set_icon_name("edit-copy-symbolic");
                    button.set_css_classes(&[]);
                }
            ));
        }
    }

    #[template_callback]
    fn handle_port_changed(&self, _entry: &Entry) {
        self.port_edit_apply.set_visible(true);
        self.port_edit_cancel.set_visible(true);
    }

    #[template_callback]
    fn handle_port_edit_apply(&self) {
        self.obj().request_port_change();
    }

    #[template_callback]
    fn handle_port_edit_cancel(&self) {
        log::debug!("cancel port edit");
        self.port_entry
            .set_text(self.port.get().to_string().as_str());
        self.port_edit_apply.set_visible(false);
        self.port_edit_cancel.set_visible(false);
    }

    #[template_callback]
    fn handle_emulation(&self) {
        self.obj().request_emulation();
    }

    #[template_callback]
    fn handle_capture(&self) {
        self.obj().request_capture();
    }

    pub fn set_port(&self, port: u16) {
        self.port.set(port);
        if port == DEFAULT_PORT {
            self.port_entry.set_text("");
        } else {
            self.port_entry.set_text(format!("{port}").as_str());
        }
        self.port_edit_apply.set_visible(false);
        self.port_edit_cancel.set_visible(false);
    }
}

impl ObjectImpl for Window {
    fn constructed(&self) {
        if let Ok(hostname) = hostname::get() {
            self.hostname_label
                .set_text(hostname.to_str().expect("hostname: invalid utf8"));
        }
        self.parent_constructed();
        self.set_port(DEFAULT_PORT);
        let obj = self.obj();
        obj.setup_icon();
        obj.setup_clients();
    }
}

impl WidgetImpl for Window {}
impl WindowImpl for Window {}
impl ApplicationWindowImpl for Window {}
impl AdwApplicationWindowImpl for Window {}