use crate::*;

impl Tek {
    /// Render the arranger.
    pub fn view_arranger (&self) -> impl Content<TuiOut> + use<'_> {
        let w             = self.w();
        let w_m           = self.w_tracks_area();
        let w_s           = self.w_sidebar();
        let h_trks        = self.h_tracks_area();
        let h_outs        = self.h_outputs().saturating_sub(1);
        let h_ins         = self.h_inputs().saturating_sub(1);
        let h_scn         = self.h_scenes();
        let n_outs        = self.midi_outs.len();
        let n_ins         = self.midi_ins.len();
        let ins_szs       = ||self.inputs_sizes();
        let outs_szs      = ||self.outputs_sizes();
        let editing       = self.is_editing();
        let scn_scr       = self.view_scene_scroll();
        let scn_sel       = self.selected().scene();
        let scn_last      = self.scenes.len().saturating_sub(1);
        let scns_clrs     = move||self.scenes_with_colors(editing, h_trks);
        let trk_scr       = self.view_track_scroll();
        let trks_szs      = ||self.tracks_sizes_scrolled();
        let trk_sel       = self.selected().track();
        let scns_trk_clrs = move||self.scenes_with_track_colors(
            editing, self.h_tracks_area(), trk_sel.unwrap_or(0)
        );
        let trk_cnt_data  = (trk_sel.unwrap_or(0), self.tracks().len());
        self.fmtd.write().unwrap().trks.update(
            Some(trk_cnt_data), rewrite!(buf, "{}/{}", trk_cnt_data.0, trk_cnt_data.1)
        );
        Bsp::s(view_inputs(
            w_m, w_s, h_ins, n_ins, trks_szs, ins_szs, trk_sel, editing
        ), Bsp::s(view_tracks(
            w_m, w_s, &self.fmtd.read().unwrap().trks.view, trks_szs, trk_sel, editing
        ), Bsp::n(view_outputs(
            w_m, w_s, h_outs, n_outs, trks_szs, outs_szs, trk_sel, editing
        ), view_scenes(
            w, w_m, w_s, h_scn, 
            trk_scr, trks_szs, trk_sel,
            scn_scr, scns_clrs, scns_trk_clrs, scn_last, scn_sel,
            &self.editor, editing
        ))))
    }

    pub(crate) fn view_scene_scroll (&self) -> impl Content<TuiOut> {
        Fill::y(Fixed::x(1, ScrollbarV {
            offset: self.scene_scroll,
            length: self.h_tracks_area() as usize,
            total:  self.h_scenes() as usize,
        }))
    }

    pub(crate) fn view_track_scroll (&self) -> impl Content<TuiOut> {
        Fill::y(Fixed::x(1, ScrollbarV {
            offset: self.scene_scroll,
            length: self.h_tracks_area() as usize,
            total:  self.h_scenes() as usize,
        }))
    }
}

pub(crate) fn io_ports <'a, T: PortsSizes<'a>> (
    fg: Color, bg: Color, iter: impl Fn()->T + Send + Sync + 'a
) -> impl Content<TuiOut> + 'a {
    Map::new(iter,
        move|(index, name, connections, y, y2), _|map_south(y as u16, (y2-y) as u16, Bsp::s(
            Fill::x(Tui::bold(true, Tui::fg_bg(fg, bg, Align::w(Bsp::e(" 󰣲 ", name))))),
            Map::new(||connections.iter(), move|connect, index|map_south(index as u16, 1,
                Fill::x(Align::w(Tui::bold(false, Tui::fg_bg(fg, bg,
                    &connect.info)))))))))
}

pub(crate) fn io_conns <'a, T: PortsSizes<'a>> (
    fg: Color, bg: Color, iter: impl Fn()->T + Send + Sync + 'a
) -> impl Content<TuiOut> + 'a {
    Map::new(iter,
        move|(index, name, connections, y, y2), _|map_south(y as u16, (y2-y) as u16, Bsp::s(
            Fill::x(Tui::bold(true, wrap(bg, fg, Fill::x(Align::w("▞▞▞▞ ▞▞▞▞"))))),
            Map::new(||connections.iter(), move|connect, index|map_south(index as u16, 1,
                Fill::x(Align::w(Tui::bold(false, wrap(bg, fg, Fill::x(""))))))))))
}

//#[cfg(test)] mod test {
    //use super::*;
    //#[test] fn test_view_arranger () {
        //let mut output = TuiOut::default();
        //output.area[2] = 9;
        //output.area[3] = 9;

        //let mut app = Tek::default();
        //app.editor = Some(Default::default());
        //app.scenes_add(5);
        //app.tracks_add(5, Some(5), &[], &[]);

        //Content::render(&io_ports(Reset, Reset, ||app.inputs_sizes()),  &mut output);
        //Content::render(&io_conns(Reset, Reset, ||app.outputs_sizes()), &mut output);
        //Content::render(&app.per_track(|_, _|()),     &mut output);
        //Content::render(&app.per_track_top(|_, _|()), &mut output);

        //Content::render(&app.view_arranger(), &mut output);
        //Content::render(&app.view_inputs(),   &mut output);
        //Content::render(&app.view_outputs(),  &mut output);
        //Content::render(&app.view_scenes(),   &mut output);

        //Content::render(
            //&app.view_scene_name(0, 0, 0, 0, &Default::default(), None),
            //&mut output);

        //Content::render(
            //&app.view_scene_clip(0, 0, 0, &{
                //let mut scene: Scene = Default::default();
                //scene.clips.push(Some(Default::default()));
                //scene
            //}, None, 0, 0, false, false, None),
            //&mut output);

        //Content::render(&view_scene_cell(
            //false,
            //None,
            //false,
            //0,
            //&Default::default(),
            //None,
            //None,
            //&"",
            //Default::default(),
        //), &mut output);
    //}
//}