Help command for listing all commands

[kaka/cakelight.git] / src / kaka / cakelight / Console.java

package kaka.cakelight;

import kaka.cakelight.mode.AmbientMode;
import kaka.cakelight.mode.SingleColorMode;
import kaka.cakelight.mode.TwoColorNoiseMode;
import kaka.cakelight.mode.VideoMode;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.*;

public class Console extends Thread {
    private CakeLight cakelight;
    private Configuration config;
    private BufferedReader reader;
    private Map<String, Command> commands = new HashMap<>();
    private List<Command> commandList = new ArrayList<>();

    public static void start(CakeLight cakelight, Configuration config) {
        new Console(cakelight, config).start();
    }

    private Console(CakeLight cakelight, Configuration config) {
        this.cakelight = cakelight;
	this.config = config;
	reader = new BufferedReader(new InputStreamReader(System.in));
	register(new HelpCommand());
	register(TwoColorNoiseMode.getCommand());
    }

    public CakeLight getCakelight() {
	return cakelight;
    }

    public Configuration getConfig() {
	return config;
    }

    private class HelpCommand implements Command {
	@Override
	public String[] getNames() {
	    return new String[] {"?", "h", "help"};
	}

	@Override
	public void activate(Console console, String[] args) {
	    for (Command c : commandList) {
		System.out.println(String.join("|", c.getNames()));
	    }
	}
    }

    private void register(Command cmd) {
	for (String name : cmd.getNames()){
	    if (commands.containsKey(name)) {
	        System.out.println("Command name '" + name + "' is already registered by '" + commands.get(name).getClass() + "'!");
	        System.exit(1);
	    }
	    commands.put(name, cmd);
	}
	commandList.add(cmd);
    }

    @Override
    public void run() {
        while (true) {
            System.out.print("> ");
            try {
                String input = reader.readLine();
		String[] splitInput = input.split("\\s+", 2);
		String name = splitInput[0];
		String[] args = splitInput.length == 2
			? splitInput[1].split("\\s+")
			: new String[]{};

		Command cmd = commands.get(name);
		if (cmd != null) {
		    cmd.activate(this, args);
		    continue;
		}

                if (input.matches("[0-5]")) {
		    cakelight.setMode(new AmbientMode(new String[] {input}));
		    System.out.println("setting ambient mode to " + input);
		} else if (input.matches("v|video")) {
                    cakelight.setMode(new VideoMode());
		} else if (input.matches("(b|brightness)\\s+[0-9]+")) {
		    String[] split = input.split("\\s+");
		    config.leds.brightness = Integer.parseInt(split[1]);
		    System.out.println("setting brightness to " + config.leds.brightness);
		} else if (input.matches("q|quit")) {
		    cakelight.turnOff();
		    System.out.println("stopping cakelight");
		    break;
		} else if (input.matches("(c|col|color)(\\s+[0-9]+){3}")) {
		    String[] split = input.split("\\s+");
		    Color c = Color.rgb(
			    Integer.parseInt(split[1]),
			    Integer.parseInt(split[2]),
			    Integer.parseInt(split[3])
		    );
		    cakelight.setMode(new SingleColorMode(c));
		    System.out.println("setting color to " + c);
		} else if (input.matches("(g|gamma)\\s+[0-9.]+")) {
		    String[] split = input.split("\\s+");
		    config.gamma = Double.parseDouble(split[1]);
		    Color.calculateGammaCorrection(config.gamma);
		    System.out.println("setting gamma to " + config.gamma);
		} else if (input.matches("(s|saturation)\\s+[0-9.]+")) {
		    String[] split = input.split("\\s+");
		    config.video.saturation = Double.parseDouble(split[1]);
		    System.out.println("setting saturation to " + config.video.saturation);
		} else if (input.matches("(n|noise)(\\s+[a-z0-9]+){2}")) {
		    TwoColorNoiseMode.getCommand().activate(this, input.split("\\s+"));
		    System.out.println("setting two-color noise mode");
		}
            } catch (IOException e) {
                System.out.println("Error reading from command line");
                break;
            }
        }
    }

    public interface Command {
        String[] getNames();
        void activate(Console console, String[] args);

	default Color parseColor(String s) {
	    switch (s.toLowerCase()) {
		case "r": return Color.rgb(255, 0, 0);
		case "g": return Color.rgb(0, 255, 0);
		case "b": return Color.rgb(0, 0, 255);
		default: // assume hexadecimal
		    if (s.startsWith("#")) {
		        s = s.substring(1);
		    }
		    if (s.length() == 3) {
			return Color.rgb(
				Integer.parseInt(s.substring(0, 1), 16) * 16 + Integer.parseInt(s.substring(0, 1), 16),
				Integer.parseInt(s.substring(1, 2), 16) * 16 + Integer.parseInt(s.substring(1, 2), 16),
				Integer.parseInt(s.substring(2, 3), 16) * 16 + Integer.parseInt(s.substring(2, 3), 16)
			);
		    } else if (s.length() == 6) {
			return Color.rgb(
				Integer.parseInt(s.substring(0, 2), 16),
				Integer.parseInt(s.substring(2, 4), 16),
				Integer.parseInt(s.substring(4, 6), 16)
			);
		    }
	    }
	    System.out.println("Failed to parse color '" + s + "'. Using black instead.");
	    return Color.BLACK;
	}

	default void output(String text) {
	    System.out.println("(" + text + ")");
	}
    }
}