use cosmic::iced::core::keyboard::key::Named;
use cosmic::iced::keyboard::Key;
use cosmic::widget::menu::key_bind::{KeyBind, Modifier};
use std::collections::HashMap;

use crate::app::Action;
use crate::tab;

//TODO: load from config
pub fn key_binds(mode: &tab::Mode) -> HashMap<KeyBind, Action> {
    let mut key_binds = HashMap::new();

    macro_rules! bind {
        ([$($modifier:ident),* $(,)?], $key:expr, $action:ident) => {{
            key_binds.insert(
                KeyBind {
                    modifiers: vec![$(Modifier::$modifier),*],
                    key: $key,
                },
                Action::$action,
            );
        }};
    }

    // Common keys
    bind!([], Key::Named(Named::ArrowDown), ItemDown);
    bind!([], Key::Named(Named::ArrowLeft), ItemLeft);
    bind!([], Key::Named(Named::ArrowRight), ItemRight);
    bind!([], Key::Named(Named::ArrowUp), ItemUp);
    bind!([], Key::Named(Named::F5), Reload);
    bind!([], Key::Named(Named::Home), SelectFirst);
    bind!([], Key::Named(Named::End), SelectLast);
    bind!([Shift], Key::Named(Named::ArrowDown), ItemDown);
    bind!([Shift], Key::Named(Named::ArrowLeft), ItemLeft);
    bind!([Shift], Key::Named(Named::ArrowRight), ItemRight);
    bind!([Shift], Key::Named(Named::ArrowUp), ItemUp);
    bind!([Shift], Key::Named(Named::Home), SelectFirst);
    bind!([Shift], Key::Named(Named::End), SelectLast);
    bind!([Ctrl, Shift], Key::Character("n".into()), NewFolder);
    bind!([], Key::Named(Named::Enter), Open);
    bind!([Ctrl], Key::Character(" ".into()), Preview);
    bind!([], Key::Character(" ".into()), Gallery);

    bind!([Ctrl], Key::Character("h".into()), ToggleShowHidden);
    bind!([Ctrl], Key::Character("a".into()), SelectAll);
    bind!([Ctrl], Key::Character("=".into()), ZoomIn);
    bind!([Ctrl], Key::Character("+".into()), ZoomIn);
    bind!([Ctrl], Key::Character("0".into()), ZoomDefault);
    bind!([Ctrl], Key::Character("-".into()), ZoomOut);
    // Switch view
    bind!([Ctrl], Key::Character("1".into()), TabViewList);
    bind!([Ctrl], Key::Character("2".into()), TabViewGrid);

    // App-only keys
    if matches!(mode, tab::Mode::App) {
        bind!([Ctrl], Key::Character("d".into()), AddToSidebar);
        bind!([Ctrl], Key::Named(Named::Enter), OpenInNewTab);
        bind!([Ctrl], Key::Character(",".into()), Settings);
        bind!([Ctrl], Key::Character("w".into()), TabClose);
        bind!([Ctrl], Key::Character("t".into()), TabNew);
        bind!([Ctrl], Key::Named(Named::Tab), TabNext);
        bind!([Ctrl, Shift], Key::Named(Named::Tab), TabPrev);
        bind!([Ctrl], Key::Character("q".into()), WindowClose);
        bind!([Ctrl], Key::Character("n".into()), WindowNew);
    }

    // App and desktop only keys
    if matches!(mode, tab::Mode::App | tab::Mode::Desktop) {
        bind!([Ctrl], Key::Character("c".into()), Copy);
        bind!([Ctrl, Shift], Key::Character("c".into()), CopyPath);
        bind!([Ctrl], Key::Character("x".into()), Cut);
        bind!([], Key::Named(Named::Delete), Delete);
        bind!([Shift], Key::Named(Named::Delete), PermanentlyDelete);
        bind!([Shift], Key::Named(Named::Enter), OpenInNewWindow);
        bind!([Ctrl], Key::Character("v".into()), Paste);
        bind!([], Key::Named(Named::F2), Rename);
    }

    // App and dialog only keys
    if matches!(mode, tab::Mode::App | tab::Mode::Dialog(_)) {
        bind!([Ctrl], Key::Character("l".into()), EditLocation);
        bind!([Alt], Key::Named(Named::ArrowRight), HistoryNext);
        bind!([Alt], Key::Named(Named::ArrowLeft), HistoryPrevious);
        bind!([], Key::Named(Named::Backspace), HistoryPrevious);
        bind!([Alt], Key::Named(Named::ArrowUp), LocationUp);
        bind!([Ctrl], Key::Character("f".into()), SearchActivate);
    }

    key_binds
}
