use crate::*;

#[tengri_proc::expose]
impl Sampler {
    //fn file_browser_filter (&self) -> Arc<str> {
        //todo!()
    //}
    //fn file_browser_path (&self) -> PathBuf {
        //todo!();
    //}
    ///// Immutable reference to sample at cursor.
    //fn sample_selected (&self) -> Option<Arc<RwLock<Sample>>> {
        //for (i, sample) in self.mapped.iter().enumerate() {
            //if i == self.cursor().0 {
                //return sample.as_ref()
            //}
        //}
        //for (i, sample) in self.unmapped.iter().enumerate() {
            //if i + self.mapped.len() == self.cursor().0 {
                //return Some(sample)
            //}
        //}
        //None
    //}
    //fn sample_gain (&self) -> f32 {
        //todo!()
    //}
    //fn sample_above () -> usize {
        //self.note_pos().min(119) + 8
    //}
    //fn sample_below () -> usize {
        //self.note_pos().max(8) - 8
    //}
    //fn sample_to_left () -> usize {
        //self.note_pos().min(126) + 1
    //}
    //fn sample_to_right () -> usize {
        //self.note_pos().max(1) - 1
    //}
    //fn selected_pitch () -> u7 {
        //(self.note_pos() as u8).into() // TODO
    //}
    fn sample_selected (&self) -> usize {
        (self.get_note_pos() as u8).into()
    }
    fn sample_selected_pitch (&self) -> u7 {
        (self.get_note_pos() as u8).into()
    }
}

#[tengri_proc::command(Sampler)]
impl SamplerCommand {
    fn record_toggle (sampler: &mut Sampler, sample: usize) -> Perhaps<Self> {
        if sampler.recording.is_some() {
            Self::record_finish(sampler)
        } else {
            Self::record_begin(sampler, sample)
        }
    }
    fn record_begin (sampler: &mut Sampler, sample: usize) -> Perhaps<Self> {
        sampler.recording = Some((
            sample,
            Arc::new(RwLock::new(Sample::new(
                "Sample",
                0,
                0,
                vec![vec![];sampler.audio_ins.len()]
            )))
        ));
        Ok(None)
    }
    fn record_finish (sampler: &mut Sampler) -> Perhaps<Self> {
        let recording = sampler.recording.take();
        let _sample = if let Some((index, sample)) = recording {
            let old = sampler.mapped[index].clone();
            sampler.mapped[index] = Some(sample);
            old
        } else {
            None
        };
        Ok(None)
    }
    fn record_cancel (sampler: &mut Sampler) -> Perhaps<Self> {
        sampler.recording = None;
        Ok(None)
    }
    //fn select (&self, state: &mut Sampler, i: usize) -> Option<Self> {
        //Self::Select(state.set_note_pos(i))
    //}
    ///// Assign sample to pitch
    //fn set (&self, pitch: u7, sample: Option<Arc<RwLock<Sample>>>) -> Option<Self> {
        //let i = pitch.as_int() as usize;
        //let old = self.mapped[i].clone();
        //self.mapped[i] = sample;
        //Some(Self::Set(old))
    //}
    //fn set_start (&self, state: &mut Sampler, pitch: u7, frame: usize) -> Option<Self> {
        //todo!()
    //}
    //fn set_gain (&self, state: &mut Sampler, pitch: u7, g: f32) -> Option<Self> {
        //todo!()
    //}
    //fn note_on (&self, state: &mut Sampler, pitch: u7, v: u7) -> Option<Self> {
        //todo!()
    //}
    //fn note_off (&self, state: &mut Sampler, pitch: u7) -> Option<Self> {
        //todo!()
    //}
    //fn set_sample (&self, state: &mut Sampler, pitch: u7, s: Option<Arc<RwLock<Sample>>>) -> Option<Self> {
        //Some(Self::SetSample(p, state.set_sample(p, s)))
    //}
    //fn import (&self, state: &mut Sampler, c: FileBrowserCommand) -> Option<Self> {
        //match c {
            //FileBrowserCommand::Begin => {
                ////let voices = &state.state.voices;
                ////let sample = Arc::new(RwLock::new(Sample::new("", 0, 0, vec![])));
                //state.mode = Some(SamplerMode::Import(0, FileBrowser::new(None)?));
                //None
            //},
            //_ => {
                //println!("\n\rtodo: import: filebrowser: {c:?}");
                //None
            //}
        //}
    //}
        ////(Select       [i: usize]              Some(Self::Select(state.set_note_pos(i))))
        ////(RecordBegin  [p: u7]                 cmd!(state.begin_recording(p.as_int() as usize)))
        ////(RecordCancel []                      cmd!(state.cancel_recording()))
        ////(RecordFinish []                      cmd!(state.finish_recording()))
        ////(SetStart     [p: u7, frame: usize]   cmd_todo!("\n\rtodo: {self:?}"))
        ////(SetGain      [p: u7, gain: f32]      cmd_todo!("\n\rtodo: {self:?}"))
        ////(NoteOn       [p: u7, velocity: u7]   cmd_todo!("\n\rtodo: {self:?}"))
        ////(NoteOff      [p: u7]                 cmd_todo!("\n\rtodo: {self:?}"))
        ////(SetSample    [p: u7, s: Option<Arc<RwLock<Sample>>>] Some(Self::SetSample(p, state.set_sample(p, s))))
        ////(Import       [c: FileBrowserCommand] match c {
            ////FileBrowserCommand::Begin => {
                //////let voices = &state.state.voices;
                //////let sample = Arc::new(RwLock::new(Sample::new("", 0, 0, vec![])));
                ////state.mode = Some(SamplerMode::Import(0, FileBrowser::new(None)?));
                ////None
            ////},
            ////_ => {
                ////println!("\n\rtodo: import: filebrowser: {c:?}");
                ////None
            ////}
        ////})));
        ////("import"        [,..a]
            ////FileBrowserCommand::try_from_expr(state, a).map(Self::Import))
        ////("select"        [i: usize]
            ////Some(Self::Select(i.expect("no index"))))
        ////("record/begin"  [i: u7]
            ////Some(Self::RecordBegin(i.expect("no index"))))
        ////("record/cancel" []
            ////Some(Self::RecordCancel))
        ////("record/finish" [] 
            ////Some(Self::RecordFinish))
        ////("set/sample"    [i: u7, s: Option<Arc<RwLock<Sample>>>]
            ////Some(Self::SetSample(i.expect("no index"), s.expect("no sampler"))))
        ////("set/start"     [i: u7, s: usize]
            ////Some(Self::SetStart(i.expect("no index"), s.expect("no start"))))
        ////("set/gain"      [i: u7, g: f32]
            ////Some(Self::SetGain(i.expect("no index"), g.expect("no gain"))))
        ////("note/on"       [p: u7, v: u7]
            ////Some(Self::NoteOn(p.expect("no pitch"), v.expect("no velocity"))))
        ////("note/off"      [p: u7]
            ////Some(Self::NoteOff(p.expect("no pitch"))))));
}

#[tengri_proc::command(Sampler)]
impl FileBrowserCommand {
    //("begin"   []            Some(Self::Begin))
    //("cancel"  []            Some(Self::Cancel))
    //("confirm" []            Some(Self::Confirm))
    //("select"  [i: usize]    Some(Self::Select(i.expect("no index"))))
    //("chdir"   [p: PathBuf]  Some(Self::Chdir(p.expect("no path"))))
    //("filter"  [f: Arc<str>] Some(Self::Filter(f.expect("no filter")))))
}