module amplifier;

import tuner, streamingplayer;
import std.stdio : writeln;
import std.conv : to;

class Amplifier
{
    private string description;
    private Tuner tuner;
    private StreamingPlayer player;

    this(string description)
    {
        this.description = description;
    }

    void on()
    {
        writeln(description ~ " on");
    }

    void off()
    {
        writeln(description ~ " off");
    }

    void setStereoSound()
    {
        writeln(description ~ " stereo mode on");
    }

    void setSurroundSound()
    {
        writeln(description ~ " surround sound on (5 speakers, 1 subwoofer)");
    }

    void setVolume(int level)
    {
        writeln(description ~ " setting volume to " ~ level.to!string);
    }

    void setTuner(Tuner tuner)
    {
        writeln(description ~ " setting tuner to " ~ tuner.to!string);
        this.tuner = tuner;
    }

    void setStreamingPlayer(StreamingPlayer player)
    {
        writeln(description ~ " setting Streaming player to " ~ player.to!string);
        this.player = player;
    }

    override string toString() const
    {
        return description;
    }
}