use crate::{core::*, model::{App, AppFocus}};

/// Generic key bindings for views that support focus.
pub const KEYMAP_FOCUS: &'static [KeyBinding<App>] = keymap!(App {
    [Char(';'), NONE, "command", "open command palette", |app: &mut App| {
        app.modal = Some(Box::new(crate::view::HelpModal::new()));
        Ok(true)
    }],
    [Tab, NONE,  "focus_next", "focus next area",     focus_next],
    [Tab, SHIFT, "focus_prev", "focus previous area", focus_prev],
    [Esc, NONE,  "focus_exit", "unfocus", |app: &mut App|{
        app.entered = false;
        app.transport.entered = app.entered;
        app.arranger.entered  = app.entered;
        app.sequencer.entered = app.entered;
        Ok(true)
    }],
    [Enter, NONE, "focus_enter", "activate item at cursor", |app: &mut App|{
        app.entered = true;
        app.transport.entered = app.entered;
        app.arranger.entered  = app.entered;
        app.sequencer.entered = app.entered;
        Ok(true)
    }],
});

pub fn focus_next (app: &mut App) -> Usually<bool> {
    app.section.next();
    app.transport.focused = app.section == AppFocus::Transport;
    app.transport.entered = app.entered;
    app.arranger.focused  = app.section == AppFocus::Arranger;
    app.arranger.entered  = app.entered;
    app.sequencer.focused = app.section == AppFocus::Sequencer;
    app.sequencer.entered = app.entered;
    Ok(true)
}

pub fn focus_prev (app: &mut App) -> Usually<bool> {
    app.section.prev();
    app.transport.focused = app.section == AppFocus::Transport;
    app.transport.entered = app.entered;
    app.arranger.focused  = app.section == AppFocus::Arranger;
    app.arranger.entered  = app.entered;
    app.sequencer.focused = app.section == AppFocus::Sequencer;
    app.sequencer.entered = app.entered;
    Ok(true)
}