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

/// Key bindings for arranger section.
pub const KEYMAP_ARRANGER: &'static [KeyBinding<App>] = keymap!(App {
    [Char('`'), NONE, "arranger_mode_switch", "switch the display mode", |app: &mut App| {
        app.arranger_mode = !app.arranger_mode;
        Ok(true)
    }],
    [Up,    NONE, "arranger_cursor_up",    "move cursor up",    |app: &mut App| Ok(
        match app.arranger_mode {
            false => {app.prev_scene();true},
            true  => {app.prev_track();true},
        }
    )],
    [Down,  NONE, "arranger_cursor_down",  "move cursor down",  |app: &mut App| Ok(
        match app.arranger_mode {
            false => {app.next_scene();true},
            true  => {app.next_track();true},
        }
    )],
    [Left,  NONE, "arranger_cursor_left",  "move cursor left",  |app: &mut App| Ok(
        match app.arranger_mode {
            false => {app.prev_track();true},
            true  => {app.prev_scene();true},
        }
    )],
    [Right, NONE, "arranger_cursor_right", "move cursor right", |app: &mut App| Ok(
        match app.arranger_mode {
            false => {app.next_track();true},
            true  => {app.next_scene();true}
        }
    )],
    [Enter, NONE, "arranger_activate", "activate item at cursor", |app: &mut App| Ok(
        if app.scene_cursor == 0 {
            false
        } else {
            let scene = &app.scenes[app.scene_cursor - 1];
            if app.track_cursor == 0 {
                for (i, track) in app.tracks.iter_mut().enumerate() {
                    track.sequence = scene.clips[i];
                    track.reset = true;
                }
            } else {
                let track = &mut app.tracks[app.track_cursor - 1];
                track.sequence = scene.clips[app.track_cursor - 1];
                track.reset = true;
            };
            true
        }
    )],
    [Char('.'), NONE, "arranger_increment", "set next clip at cursor", |app: &mut App| {
        app.next_phrase();
        Ok(true)
    }],
    [Char(','), NONE, "arranger_decrement", "set previous clip at cursor", |app: &mut App| {
        app.prev_phrase();
        Ok(true)
    }],
});