pub mod focus;
pub mod mixer;
pub mod plugin;
pub mod sampler;

pub use self::focus::*;

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

handle!(App |self, e| {
    if let Some(ref mut modal) = self.modal {
        if modal.handle(e)? {
            self.modal = None;
            return Ok(true)
        };
    }
    handle_keymap(self, e, KEYMAP)
});

const KEYMAP: &'static [KeyBinding<App>] = keymap!(App {
    [Char(' '), NONE,    "toggle_play",    "play or pause",             |app: &mut App| {
        app.toggle_play()?;
        Ok(true)
    }],
    [Char('a'), CONTROL, "add_scene",      "add a new scene",           |app: &mut App| {
        app.add_scene(None)?;
        Ok(true)
    }],
    [Char('t'), CONTROL, "add_track",      "add a new track",           |app: &mut App| {
        app.add_track(None)?;
        Ok(true)
    }],
    [Char('`'), NONE,    "switch_mode",    "switch the display mode",   |app: &mut App| {
        match app.section {
            0 => {app.grid_mode  = !app.grid_mode;  Ok(true)},
            1 => {app.chain_mode = !app.chain_mode; Ok(true)},
            2 => {app.seq_mode   = !app.seq_mode;   Ok(true)},
            _ => Ok(false)
        }
    }],
    [F(1),      NONE,    "toggle_help",    "toggle help",               |_: &mut App| {Ok(true)}],
    [Char('r'), NONE,    "toggle_record",  "toggle recording",          |_: &mut App| {Ok(true)}],
    [Char('d'), NONE,    "toggle_overdub", "toggle overdub",            |_: &mut App| {Ok(true)}],
    [Char('m'), NONE,    "toggle_monitor", "toggle input monitoring",   |_: &mut App| {Ok(true)}],
    [Up,        NONE,    "cursor_up",      "move cursor up",            |app: &mut App| {
        if app.entered {
            match app.section {
                0 => match app.grid_mode {
                    false => {app.scene_cursor = app.scene_cursor.saturating_sub(1); Ok(true)},
                    true  => {app.track_cursor = app.track_cursor.saturating_sub(1); Ok(true)},
                },
                2 => { app.note_cursor = app.note_cursor.saturating_sub(1); Ok(true) }
                _ => Ok(false)
            }
        } else {
            focus_next(app)
        }
    }],
    [Down,      NONE,    "cursor_down",    "move cursor down",          |app: &mut App| {
        if app.entered {
            match app.section {
                0 => match app.grid_mode {
                    false => {app.scene_cursor = app.scenes.len().min(app.scene_cursor + 1); Ok(true)},
                    true  => {app.track_cursor = app.tracks.len().min(app.track_cursor + 1); Ok(true)},
                },
                2 => { app.note_cursor = app.note_cursor + 1; Ok(true) }
                _ => Ok(false)
            }
        } else {
            focus_prev(app)
        }
    }],
    [Left,      NONE,    "cursor_left",    "move cursor left",          |app: &mut App| {
        match app.section {
            0 => match app.grid_mode {
                false => {app.track_cursor = app.track_cursor.saturating_sub(1); Ok(true)},
                true  => {app.scene_cursor = app.scene_cursor.saturating_sub(1); Ok(true)},
            },
            1 => {
                if let Some((_, track)) = app.track_mut() {
                    track.device = track.device.saturating_sub(1);
                    Ok(true)
                } else {
                    Ok(false)
                }
            },
            2 => {
                app.time_cursor = app.time_cursor.saturating_sub(1);
                Ok(true)
            },
            _ => Ok(false)
        }
    }],
    [Right,     NONE,    "cursor_right",   "move cursor right",         |app: &mut App| {
        match app.section {
            0 => match app.grid_mode {
                false => {app.track_cursor = app.tracks.len().min(app.track_cursor + 1); Ok(true)},
                true  => {app.scene_cursor = app.scenes.len().min(app.scene_cursor + 1); Ok(true)},
            },
            1 => {
                if let Some((_, track)) = app.track_mut() {
                    track.device = (track.device + 1).min(track.devices.len().saturating_sub(1));
                    Ok(true)
                } else {
                    Ok(false)
                }
            },
            2 => {
                app.time_cursor = app.time_cursor + 1;
                Ok(true)
            },
            _ => Ok(false)
        }
    }],
    [Tab,       NONE,    "focus_next",     "focus next area",           focus_next],
    [Tab,       SHIFT,   "focus_prev",     "focus previous area",       focus_prev],
    [Char('.'), NONE,    "increment",      "increment value",           increment],
    [Char(','), NONE,    "decrement",      "decrement value",           decrement],
    [Delete,    CONTROL, "delete",         "delete track",              delete],
    [Char('d'), CONTROL, "duplicate",      "duplicate scene or track",  duplicate],
    [Enter,     NONE,    "activate",       "activate item at cursor",   enter],
    [Esc,       NONE,    "escape",         "unfocus",                   escape],
    [Char('r'), CONTROL, "rename",         "rename current element",    rename],
//    [Char('='), NONE,  "zoom_in",         "Zoom in",                  zoom_in],
//    [Char('-'), NONE,  "zoom_out",        "Zoom out",                 zoom_out],
//    [Char('a'), NONE,  "note_add",        "Add note",                 note_add],
//    [Char('z'), NONE,  "note_del",        "Delete note",              note_del],
//    [CapsLock,  NONE,  "advance",         "Toggle auto advance",      nop],
//    [Char('w'), NONE,  "rest",            "Advance by note duration", nop],
//    [Char('s'), NONE,  "stop_and_rewind", "Stop and rewind",          stop_and_rewind],
//    [Char('q'), NONE,  "quantize_next",   "Next quantize value",      quantize_next],
//    [Char('Q'), SHIFT, "quantize_prev",   "Previous quantize value",  quantize_prev],
});

fn focus_next (app: &mut App) -> Usually<bool> {
    if app.section >= 2 {
        app.section = 0;
    } else {
        app.section = app.section + 1;
    }
    Ok(true)
}

fn focus_prev (app: &mut App) -> Usually<bool> {
    if app.section == 0 {
        app.section = 2;
    } else {
        app.section = app.section - 1;
    }
    Ok(true)
}

fn increment (app: &mut App) -> Usually<bool> {
    match app.section {
        0 => clip_next(app),
        _ => Ok(false)
    }
}

fn clip_next (_: &mut App) -> Usually<bool> { Ok(true) }
//fn clip_next (state: &mut Launcher) -> Usually<bool> {
    //if state.cursor.0 >= 1 && state.cursor.1 >= 1 {
        //let scene_id = state.cursor.1 - 1;
        //let clip_id  = state.cursor.0 - 1;
        //let scene = &mut state.scenes[scene_id];
        //scene.clips[clip_id] = match scene.clips[clip_id] {
            //None => Some(0),
            //Some(i) => if i >= state.tracks[clip_id].sequencer.phrases.len().saturating_sub(1) {
                //None
            //} else {
                //Some(i + 1)
            //}
        //};
    //}
    //Ok(true)
//}

fn decrement (app: &mut App) -> Usually<bool> {
    match app.section {
        0 => clip_prev(app),
        _ => Ok(false)
    }
}

fn clip_prev (_: &mut App) -> Usually<bool> { Ok(true) }
//fn clip_prev (state: &mut Launcher) -> Usually<bool> {
    //if state.cursor.0 >= 1 && state.cursor.1 >= 1 {
        //let scene_id = state.cursor.1 - 1;
        //let clip_id  = state.cursor.0 - 1;
        //let scene = &mut state.scenes[scene_id];
        //scene.clips[clip_id] = match scene.clips[clip_id] {
            //None => Some(state.tracks[clip_id].sequencer.phrases.len().saturating_sub(1)),
            //Some(i) => if i == 0 {
                //None
            //} else {
                //Some(i - 1)
            //}
        //};
    //}
    //Ok(true)
//}

fn activate (_: &mut App) -> Usually<bool> { Ok(true) }
//fn activate (_: &mut Launcher) -> Usually<bool> {
    //unimplemented!();
    ////if let (
        ////Some((_scene_id, scene)),
        ////Some((track_id, track)),
    ////) = (state.scene_mut(), state.track_mut()) {
        ////// Launch clip
        ////if let Some(phrase_id) = scene.clips.get(track_id) {
            ////track.sequencer.sequence = *phrase_id;
        ////}
        ////if state.playing == TransportState::Stopped {
            ////state.transport.start()?;
            ////state.playing = TransportState::Starting;
        ////}
    ////} else if let Some((_scene_id, scene)) = state.scene() {
        ////// Launch scene
        ////for (track_id, track) in state.tracks.iter().enumerate() {
            ////if let Some(phrase_id) = scene.clips.get(track_id) {
                ////track.sequencer.sequence = *phrase_id;
            ////}
        ////}
        ////if state.playing == TransportState::Stopped {
            ////state.transport.start()?;
            ////state.playing = TransportState::Starting;
        ////}
    ////} else if let Some((_track_id, _track)) = state.track() {
        ////// Rename track?
    ////}

    ////let track = state.active_track().unwrap();
    ////let scene = state.active_scene();
    ////if state.cursor.1 >= 2 {
        ////if let Some(Some(index)) = scene.clips.get(state.cursor.1 - 2) {
            ////track.enqueue(index)
        ////} else {
        ////}
    ////}
    ////if state.cursor.0 >= 1 {
        ////let sequencer = state.tracks.get_mut(state.cursor.0 - 1);
        ////if state.cursor.1 >= 2 {
            ////let scene = state.scenes.get_mut(state.cursor.1 - 2);
            ////if let Some(index) = scene.get(state.cursor.0 - 1) {
                ////let phrase = sequencer.phrases.get(index);
            ////} else {
                ////let index  = sequencer.phrases.len();
                ////let phrase = Phrase::new(&format!("Phrase#{index}"));
                ////sequencer.phrases.push(phrase);
                ////scene[state.cursor.0 - 1] = Some(index);
            ////}
        ////}
    ////}
    //Ok(true)
//}

fn delete (app: &mut App) -> Usually<bool> {
    match app.section {
        0 => delete_track(app),
        _ => Ok(false)
    }
}

fn enter (app: &mut App) -> Usually<bool> {
    if app.entered {
        activate(app)
    } else {
        app.entered = true;
        Ok(true)
    }
}

fn escape (app: &mut App) -> Usually<bool> {
    if app.entered {
        app.entered = false;
        Ok(true)
    } else {
        Ok(false)
    }
}

fn delete_track (app: &mut App) -> Usually<bool> {
    if app.tracks.len() > 0 {
        let track = app.tracks.remove(app.track_cursor);
        app.track_cursor = app.track_cursor.saturating_sub(1);
        app.jack.as_ref().unwrap().as_client().unregister_port(track.midi_out)?;
        return Ok(true)
    }
    Ok(false)
}

fn duplicate (_: &mut App) -> Usually<bool> { Ok(true) }

fn rename (_: &mut App) -> Usually<bool> { Ok(true) }

//fn toggle_record (s: &mut Launcher) -> Usually<bool> {
    //s.sequencer_mut().map(|s|s.recording = !s.recording);
    //Ok(true)
//}

//fn toggle_overdub (s: &mut Launcher) -> Usually<bool> {
    //s.sequencer_mut().map(|s|s.overdub = !s.overdub);
    //Ok(true)
//}

//fn toggle_monitor (s: &mut Launcher) -> Usually<bool> {
    //s.sequencer_mut().map(|s|s.monitoring = !s.monitoring);
    //Ok(true)
//}
//use crate::{core::*, model::*};
//use super::focus::*;

//pub fn handle (state: &mut Chain, event: &AppEvent) -> Usually<bool> {
    //Ok(handle_focus(state, event, keymap!(Chain {
        //[Up,    NONE, "focus_up",   "focus row above",
            //|s: &mut Chain|s.handle_focus(&FocusEvent::Backward)],
        //[Down,  NONE, "focus_down", "focus row below",
            //|s: &mut Chain|s.handle_focus(&FocusEvent::Forward)],
        //[Enter, NONE, "focus_down", "focus row below",
            //|s: &mut Chain|s.handle_focus(&FocusEvent::Inward)],
        //[Esc,   NONE, "focus_down", "focus row below",
            //|s: &mut Chain|s.handle_focus(&FocusEvent::Outward)],
    //}))? || handle_keymap(state, event, keymap!(Chain {
        //[Char('a'), NONE, "add_device", "add a device", add_device]
    //}))?)
//}

//fn add_device (state: &mut Chain) -> Usually<bool> {
    //state.adding = true;
    //Ok(true)
//}

//impl Focus for Chain {
    //fn unfocus (&mut self) {
        //self.focused = false
    //}
    //fn focused (&self) -> Option<&Box<dyn Device>> {
        //match self.focused {
            //true  => self.items.get(self.focus),
            //false => None
        //}
    //}
    //fn focused_mut (&mut self) -> Option<&mut Box<dyn Device>> {
        //match self.focused {
            //true  => self.items.get_mut(self.focus),
            //false => None
        //}
    //}
    //fn handle_focus (&mut self, event: &FocusEvent) -> Usually<bool> {
        //Ok(match event {
            //FocusEvent::Backward => {
                //if self.focus == 0 {
                    //self.focus = self.items.len();
                //}
                //self.focus = self.focus - 1;
                //true
            //},
            //FocusEvent::Forward => {
                //self.focus = self.focus + 1;
                //if self.focus >= self.items.len() {
                    //self.focus = 0;
                //}
                //true
            //},
            //FocusEvent::Inward => {
                //self.focused = true;
                //self.items[self.focus].handle(&AppEvent::Focus)?;
                //true
            //},
            //FocusEvent::Outward => {
                //if self.focused {
                    //self.focused = false;
                    //self.items[self.focus].handle(&AppEvent::Blur)?;
                    //true
                //} else {
                    //false
                //}
            //},
        //})
    //}
//}