classdef DebugApp < matlab.apps.AppBase

    % Properties that correspond to app components
    properties (Access = public)
        UIFigure               matlab.ui.Figure
        AChordButton           matlab.ui.control.Button
        CChordButton           matlab.ui.control.Button
        AmChordButton          matlab.ui.control.Button
        DChordButton           matlab.ui.control.Button
        D7ChordButton          matlab.ui.control.Button
        EButton_2              matlab.ui.control.Button
        AButton                matlab.ui.control.Button
        DButton                matlab.ui.control.Button
        GButton                matlab.ui.control.Button
        BButton                matlab.ui.control.Button
        EButton_7              matlab.ui.control.Button
        EChordButton           matlab.ui.control.Button
        EmChordButton          matlab.ui.control.Button
        FChordButton           matlab.ui.control.Button
        GChordButton           matlab.ui.control.Button
        VolumeSliderLabel      matlab.ui.control.Label
        VolumeSlider           matlab.ui.control.Slider
        SustainSliderLabel     matlab.ui.control.Label
        SustainSlider          matlab.ui.control.Slider
        DistortionSwitchLabel  matlab.ui.control.Label
        DistortionSwitch       matlab.ui.control.RockerSwitch
        TremoloSwitchLabel     matlab.ui.control.Label
        TremoloSwitch          matlab.ui.control.RockerSwitch
        WahWahSwitchLabel      matlab.ui.control.Label
        WahWahSwitch           matlab.ui.control.RockerSwitch
    end


    properties (Access = private)
        Fs = 44100;
        Volume = 0.5;
        Gain = 0.498;
        Distortion = -1;
        Tremolo = -1;
        WahWah = -1;

        E2 = 534;
        A2 = 400;
        D3 = 299;
        G3 = 224;
        B3 = 177;
        E4 = 133;

        %Chord A
        AE3 = 267;
        AA3 = 199;
        ACS4 = 158;

        %Chord Am
        AmC4 = 167;

        %Chord C
        CC3 = 335;

        %Chord D
        DD4 = 149;
        DFS4 = 118;

        %Chord E
        EB2 = 356;
        EAb3 = 211;

        %Chord F
        FF3 = 252;
        FF4 = 125;

        %Chord G
        GG2 = 445;
        GG4 = 224;




    end
    methods (Access = private)

        function Pluck(app, ~, N, g)
            if ~exist('g','var')
                g = 0;
            end
            duration = 500; %100
            gain = app.Gain - g;

            x = 2*randi([0 1], fix(N), 1)-1; %Random noise burst
            x(x>0) = x(x>0)-(1-app.Volume); %Change volume
            x(x<0) = x(x<0)+(1-app.Volume);
            rx = x; %Real input
            x = [x; zeros(length(x)*duration, 1)]; %Make input longer

            out = [rx; zeros(length(x)*5,1)]; %Initialise empty output channel
            prev = out(length(rx)); %Previous sample value

            for n = length(rx)+1:length(out) %Only modify after noise burst
                %Add lowpass filter and to delayed channel.
                out(n) = (out(n-length(rx)) + prev)*gain;
                prev = out(n);
            end

            if app.Distortion == 1
                out = app.Distort(out);
            end

            if app.Tremolo == 1
                out = app.ApplyTremolo(out);
            end

            if app.WahWah == 1
                out = app.ApplyWahWah(out);
            end


            sound(out, app.Fs);

        end

        function out = Distort(app, out)
            out = out*50;
            out(out>1) = 1 * app.Volume;
            out(out<-1) = -1 * app.Volume;
        end

        function out = ApplyTremolo(app, out)
            t = [1:length(out)] * (1/app.Fs);
            t = t(:);
            LFO = sin(20* t);

            out = out.*LFO;
        end

        function out = ApplyWahWah(app, out)
            t = [1:length(out)*5] * (1/app.Fs);
            t = t(:);
            LFO = sin(20 * t)*200;

            channel = out;
            for n = 1:length(out)
                if n-fix(LFO(n)) > 1
                    out(n) = out(n) + channel(n-fix(LFO(n)));
                end
            end
        end
    end

    methods (Access = private)

        % Button pushed function: EButton_2
        function EButton_2Pushed(app, event)
            app.Pluck(app, app.E2);
        end

        % Button pushed function: AButton
        function AButtonPushed(app, event)
            app.Pluck(app, app.A2);
        end

        % Button pushed function: DButton
        function DButtonPushed(app, event)
            app.Pluck(app, app.D3);
        end

        % Button pushed function: GButton
        function GButtonPushed(app, event)
            app.Pluck(app, app.G3);
        end

        % Button pushed function: BButton
        function BButtonPushed(app, event)
            app.Pluck(app, app.B3);
        end

        % Button pushed function: EButton_7
        function EButton_7Pushed(app, event)
            app.Pluck(app, app.E4);
        end

        % Button pushed function: AChordButton
        function AChordButtonPushed(app, event)
            app.Pluck(app, app.E2, 0.01);
            app.Pluck(app, app.A2);
            app.Pluck(app, app.AE3);
            app.Pluck(app, app.AA3);
            app.Pluck(app, app.ACS4);
            app.Pluck(app, app.E4);
        end

        % Button pushed function: AmChordButton
        function AmChordButtonPushed(app, event)
            app.Pluck(app, app.A2);
            app.Pluck(app, app.AE3);
            app.Pluck(app, app.AA3);
            app.Pluck(app, app.AmC4);
            app.Pluck(app, app.E4);
        end

        % Button pushed function: CChordButton
        function CChordButtonPushed(app, event)
            app.Pluck(app, app.CC3);
            app.Pluck(app, app.AE3);
            app.Pluck(app, app.G3);
            app.Pluck(app, app.AmC4);
            app.Pluck(app, app.E4);
        end

        % Button pushed function: DChordButton
        function DChordButtonPushed(app, event)
            app.Pluck(app, app.A2, 0.01);
            app.Pluck(app, app.D3);
            app.Pluck(app, app.AA3);
            app.Pluck(app, app.DD4);
            app.Pluck(app, app.DFS4);
        end

        % Button pushed function: EChordButton
        function EChordButtonPushed(app, event)
            app.Pluck(app, app.E2, 0.01);
            app.Pluck(app, app.EB2);
            app.Pluck(app, app.AE3);
            app.Pluck(app, app.EAb3);
            app.Pluck(app, app.B3);
            app.Pluck(app, app.E4);
        end

        % Button pushed function: EmChordButton
        function EmChordButtonPushed(app, event)
            app.Pluck(app, app.E2, 0.01);
            app.Pluck(app, app.EB2);
            app.Pluck(app, app.AE3);
            app.Pluck(app, app.G3);
            app.Pluck(app, app.B3);
            app.Pluck(app, app.E4);
        end

        % Button pushed function: FChordButton
        function FChordButtonPushed(app, event)
            app.Pluck(app, app.A2, 0.01);
            app.Pluck(app, app.FF3);
            app.Pluck(app, app.AA3);
            app.Pluck(app, app.AmC4);
            app.Pluck(app, app.FF4);
        end

        % Button pushed function: GChordButton
        function GChordButtonPushed(app, event)
            app.Pluck(app, app.GG2, 0.01);
            app.Pluck(app, app.EB2);
            app.Pluck(app, app.D3);
            app.Pluck(app, app.G3);
            app.Pluck(app, app.DD4);
            app.Pluck(app, app.GG4);
        end

        % Button pushed function: D7ChordButton
        function D7ChordButtonPushed(app, event)
            app.Pluck(app, app.A2, 0.01);
            app.Pluck(app, app.D3);
            app.Pluck(app, app.AA3);
            app.Pluck(app, app.AmC4);
            app.Pluck(app, app.DFS4);
        end

        % Value changed function: VolumeSlider
        function VolumeSliderValueChanged(app, event)
            app.Volume = app.VolumeSlider.Value;

        end

        % Value changed function: SustainSlider
        function SustainSliderValueChanged(app, event)
            app.Gain = app.SustainSlider.Value;

        end

        % Value changed function: DistortionSwitch
        function DistortionSwitchValueChanged(app, event)
            app.Distortion = app.Distortion*-1;

        end

        % Value changed function: TremoloSwitch
        function TremoloSwitchValueChanged(app, event)
            app.Tremolo = app.Tremolo*-1;

        end

        % Value changed function: WahWahSwitch
        function WahWahSwitchValueChanged(app, event)
            app.WahWah = app.WahWah*-1;

        end
    end

    % App initialization and construction
    methods (Access = private)

        % Create UIFigure and components
        function createComponents(app)

            % Create UIFigure
            app.UIFigure = uifigure;
            app.UIFigure.Position = [100 100 648 420];
            app.UIFigure.Name = 'UI Figure';

            % Create AChordButton
            app.AChordButton = uibutton(app.UIFigure, 'push');
            app.AChordButton.ButtonPushedFcn = createCallbackFcn(app, @AChordButtonPushed, true);
            app.AChordButton.Position = [34 337 90 56];
            app.AChordButton.Text = 'A Chord';

            % Create CChordButton
            app.CChordButton = uibutton(app.UIFigure, 'push');
            app.CChordButton.ButtonPushedFcn = createCallbackFcn(app, @CChordButtonPushed, true);
            app.CChordButton.Position = [232 337 90 56];
            app.CChordButton.Text = 'C Chord';

            % Create AmChordButton
            app.AmChordButton = uibutton(app.UIFigure, 'push');
            app.AmChordButton.ButtonPushedFcn = createCallbackFcn(app, @AmChordButtonPushed, true);
            app.AmChordButton.Position = [133 337 90 56];
            app.AmChordButton.Text = 'Am Chord';

            % Create DChordButton
            app.DChordButton = uibutton(app.UIFigure, 'push');
            app.DChordButton.ButtonPushedFcn = createCallbackFcn(app, @DChordButtonPushed, true);
            app.DChordButton.Position = [331 337 90 56];
            app.DChordButton.Text = 'D Chord';

            % Create D7ChordButton
            app.D7ChordButton = uibutton(app.UIFigure, 'push');
            app.D7ChordButton.ButtonPushedFcn = createCallbackFcn(app, @D7ChordButtonPushed, true);
            app.D7ChordButton.Position = [430 337 90 56];
            app.D7ChordButton.Text = 'D7 Chord';

            % Create EButton_2
            app.EButton_2 = uibutton(app.UIFigure, 'push');
            app.EButton_2.ButtonPushedFcn = createCallbackFcn(app, @EButton_2Pushed, true);
            app.EButton_2.Position = [144 219 50 42];
            app.EButton_2.Text = 'E';

            % Create AButton
            app.AButton = uibutton(app.UIFigure, 'push');
            app.AButton.ButtonPushedFcn = createCallbackFcn(app, @AButtonPushed, true);
            app.AButton.Position = [209 219 50 42];
            app.AButton.Text = 'A';

            % Create DButton
            app.DButton = uibutton(app.UIFigure, 'push');
            app.DButton.ButtonPushedFcn = createCallbackFcn(app, @DButtonPushed, true);
            app.DButton.Position = [274 219 50 42];
            app.DButton.Text = 'D';

            % Create GButton
            app.GButton = uibutton(app.UIFigure, 'push');
            app.GButton.ButtonPushedFcn = createCallbackFcn(app, @GButtonPushed, true);
            app.GButton.Position = [339 219 50 42];
            app.GButton.Text = 'G';

            % Create BButton
            app.BButton = uibutton(app.UIFigure, 'push');
            app.BButton.ButtonPushedFcn = createCallbackFcn(app, @BButtonPushed, true);
            app.BButton.Position = [404 219 50 42];
            app.BButton.Text = 'B';

            % Create EButton_7
            app.EButton_7 = uibutton(app.UIFigure, 'push');
            app.EButton_7.ButtonPushedFcn = createCallbackFcn(app, @EButton_7Pushed, true);
            app.EButton_7.Position = [469 219 50 42];
            app.EButton_7.Text = 'E';

            % Create EChordButton
            app.EChordButton = uibutton(app.UIFigure, 'push');
            app.EChordButton.ButtonPushedFcn = createCallbackFcn(app, @EChordButtonPushed, true);
            app.EChordButton.Position = [529 337 90 56];
            app.EChordButton.Text = 'E Chord';

            % Create EmChordButton
            app.EmChordButton = uibutton(app.UIFigure, 'push');
            app.EmChordButton.ButtonPushedFcn = createCallbackFcn(app, @EmChordButtonPushed, true);
            app.EmChordButton.Position = [183 270 90 56];
            app.EmChordButton.Text = 'Em Chord';

            % Create FChordButton
            app.FChordButton = uibutton(app.UIFigure, 'push');
            app.FChordButton.ButtonPushedFcn = createCallbackFcn(app, @FChordButtonPushed, true);
            app.FChordButton.Position = [282 270 90 56];
            app.FChordButton.Text = 'F Chord';

            % Create GChordButton
            app.GChordButton = uibutton(app.UIFigure, 'push');
            app.GChordButton.ButtonPushedFcn = createCallbackFcn(app, @GChordButtonPushed, true);
            app.GChordButton.Position = [380 270 90 56];
            app.GChordButton.Text = 'G Chord';

            % Create VolumeSliderLabel
            app.VolumeSliderLabel = uilabel(app.UIFigure);
            app.VolumeSliderLabel.HorizontalAlignment = 'right';
            app.VolumeSliderLabel.Position = [34 60 46 22];
            app.VolumeSliderLabel.Text = 'Volume';

            % Create VolumeSlider
            app.VolumeSlider = uislider(app.UIFigure);
            app.VolumeSlider.Limits = [0 1];
            app.VolumeSlider.MajorTicks = [0 1];
            app.VolumeSlider.MajorTickLabels = {'Min', 'Max', ''};
            app.VolumeSlider.ValueChangedFcn = createCallbackFcn(app, @VolumeSliderValueChanged, true);
            app.VolumeSlider.Position = [101 69 506 3];
            app.VolumeSlider.Value = 0.5;

            % Create SustainSliderLabel
            app.SustainSliderLabel = uilabel(app.UIFigure);
            app.SustainSliderLabel.HorizontalAlignment = 'right';
            app.SustainSliderLabel.Position = [34 114 46 22];
            app.SustainSliderLabel.Text = 'Sustain';

            % Create SustainSlider
            app.SustainSlider = uislider(app.UIFigure);
            app.SustainSlider.Limits = [0.49 0.50005];
            app.SustainSlider.MajorTicks = [0.46 0.50005];
            app.SustainSlider.MajorTickLabels = {'Min', 'Max', ''};
            app.SustainSlider.ValueChangedFcn = createCallbackFcn(app, @SustainSliderValueChanged, true);
            app.SustainSlider.Position = [101 123 505 3];
            app.SustainSlider.Value = 0.498;

            % Create DistortionSwitchLabel
            app.DistortionSwitchLabel = uilabel(app.UIFigure);
            app.DistortionSwitchLabel.HorizontalAlignment = 'center';
            app.DistortionSwitchLabel.Position = [447 145 56 22];
            app.DistortionSwitchLabel.Text = 'Distortion';

            % Create DistortionSwitch
            app.DistortionSwitch = uiswitch(app.UIFigure, 'rocker');
            app.DistortionSwitch.Orientation = 'horizontal';
            app.DistortionSwitch.ValueChangedFcn = createCallbackFcn(app, @DistortionSwitchValueChanged, true);
            app.DistortionSwitch.Position = [452 175 45 20];

            % Create TremoloSwitchLabel
            app.TremoloSwitchLabel = uilabel(app.UIFigure);
            app.TremoloSwitchLabel.HorizontalAlignment = 'center';
            app.TremoloSwitchLabel.Position = [313 145 49 22];
            app.TremoloSwitchLabel.Text = 'Tremolo';

            % Create TremoloSwitch
            app.TremoloSwitch = uiswitch(app.UIFigure, 'rocker');
            app.TremoloSwitch.Orientation = 'horizontal';
            app.TremoloSwitch.ValueChangedFcn = createCallbackFcn(app, @TremoloSwitchValueChanged, true);
            app.TremoloSwitch.Position = [314 175 45 20];

            % Create WahWahSwitchLabel
            app.WahWahSwitchLabel = uilabel(app.UIFigure);
            app.WahWahSwitchLabel.HorizontalAlignment = 'center';
            app.WahWahSwitchLabel.Position = [160.5 145 58 22];
            app.WahWahSwitchLabel.Text = 'Wah-Wah';

            % Create WahWahSwitch
            app.WahWahSwitch = uiswitch(app.UIFigure, 'rocker');
            app.WahWahSwitch.Orientation = 'horizontal';
            app.WahWahSwitch.ValueChangedFcn = createCallbackFcn(app, @WahWahSwitchValueChanged, true);
            app.WahWahSwitch.Position = [166 175 45 20];
        end
    end

    methods (Access = public)

        % Construct app
        function app = DebugApp

            % Create and configure components
            createComponents(app)

            % Register the app with App Designer
            registerApp(app, app.UIFigure)

            if nargout == 0
                clear app
            end
        end

        % Code that executes before app deletion
        function delete(app)

            % Delete UIFigure when app is deleted
            delete(app.UIFigure)
        end
    end
end