Bordcomputer/src/main/java/device/usbPlayer/UsbPlayer.java

package device.usbPlayer;

import device.Device;

import java.util.ArrayList;

public class UsbPlayer implements Device {

    private ArrayList<String> Playlist = new ArrayList<String>();
    private String playTrack = "";
    private Boolean isConnected;
    private Boolean isDefect;
    int Lautstaerke = 0;

    //*********setters und getters********
    public ArrayList<String> getPlaylist() {
        return Playlist;
    }

    public void setPlaylist(ArrayList<String> playlist) {
        Playlist = playlist;
    }

    public Boolean getDefect() {
        return isDefect;
    }

    public void setDefect(Boolean defect) {
        isDefect = defect;
    }


    public Boolean getConnected() {
        return isConnected;
    }

    public void setConnected(Boolean connected) {
        isConnected = connected;
    }

    public String getPlayTrack() {
        return playTrack;
    }

    public void setPlayTrack(String playTrack) {
        this.playTrack = playTrack;
    }


    public void setLautstaerke(int ls) {
        if (ls <= 100) {
            Lautstaerke = ls;
        }
    }

    public int getLautstaerke() {
        return Lautstaerke;
    }

    //*********constructure********
    public UsbPlayer() {
        super();
        isDefect = false;
        isConnected = true;
        Playlist.add("Musik 01.mp3");
        Playlist.add("Musik 02.mp3");
        Playlist.add("Musik 03.mp3");
        playTrack = Playlist.get(0);

    }
    //**********search method*************
    private boolean isAllAudio() {

        String song = "";
        boolean flag = true;

        for (int i = 0; i < Playlist.size(); i++) {
            song = Playlist.get(i).substring(Playlist.get(i).length() - 4);
            if (song.equals(".mp3") | song.equals(".mp4") | song.equals(".wav")) {
                flag = true;
            } else {
                flag = false;
                break;
            }
        }
        return flag;
    }
    //**********search method*************
    @Override
    public void quieter() {
        if(Lautstaerke > 0) {
            Lautstaerke -= 1;
        } else {
            Lautstaerke = 0;
        }
    }

    @Override
    public void louder() {
        if(Lautstaerke < 100) {
            Lautstaerke += 1;
        } else {
            Lautstaerke = 100;
        }
    }

    @Override
    public int getVolume() {
        return 0;
    }

    @Override
    public void next() {
        int currentIdex = Playlist.indexOf(playTrack);
        int nextIndex = (currentIdex + 1) % Playlist.size();
        playTrack = Playlist.get(nextIndex);
    }

    @Override
    public void prev() {
        int currentIdex = Playlist.indexOf(playTrack);
        int nextIndex = Playlist.size() - 1;
        if (currentIdex != 0) {
            nextIndex = (currentIdex - 1);
        }
        playTrack = Playlist.get(nextIndex);
    }

    @Override
    public String getInfoText() {
        return null;
    }

    @Override
    public String[] getOptions() {
        return new String[0];
    }

    @Override
    public String[] getItemList() {
        return new String[0];
    }


    @Override
    public String play() {
        String result = "USB : ";
        if (isConnected == true) {
            result += "connected,";
            if (isDefect == false) {
                result += "working";
                if (this.Playlist.size() != 0) {
                    result += ",have a list";
                    if (this.isAllAudio()) {
                        result += ",Audio";
                        if (!playTrack.equals(""))
                            result += ",point to a track.";
                        else
                            result += ",doesn't point to a track.";
                    } else {
                        result += ",not Audio.";
                    }
                } else result += ",have no list.";
            } else {
                result += "not working.";
            }
        } else result = "not connected.";
        return result;

    }

}