package net.knarcraft.ffmpegconverter.utility;

import java.io.BufferedWriter;
import java.io.IOException;
import java.io.OutputStreamWriter;

/**
 * A class which helps with outputting information
 */
public final class OutputUtil {
    private static boolean debug;
    private static final BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(System.out));

    private OutputUtil() {
    }

    /**
     * Sets whether to show debug messages
     * @param debug <p>The debug message to show.</p>
     */
    public static void setDebug(boolean debug) {
        OutputUtil.debug = debug;
    }

    /**
     * Prints something and a newline to the commandline efficiently
     * @param input <p>The text to print.</p>
     * @throws IOException <p>If a write is not possible.</p>
     */
    public static void println(String input) throws IOException {
        if (!input.equals("")) {
            writer.write(input);
        }
        println();
    }

    /**
     * Prints a string
     * @param input <p>The string to print.</p>
     * @throws IOException <p>If the writer fails to write.</p>
     */
    public static void print(String input) throws IOException {
        writer.write(input);
        writer.flush();
    }


    /**
     * Prints a newline
     * @throws IOException <p>If a write is not possible.</p>
     */
    public static void println() throws IOException {
        writer.newLine();
        writer.flush();
    }

    /**
     * Closes the writer
     * @throws IOException <p>If the writer cannot be closed.</p>
     */
    public static void close() throws IOException {
        writer.close();
    }

    /**
     * Prints a message if debug messages should be shown
     * @param message <p>The debug message to show.</p>
     * @throws IOException <p>If a write is not possible.</p>
     */
    public static void printDebug(String message) throws IOException {
        if (debug) {
            print(message);
        }
    }
}