package net.knarcraft.ffmpegconverter.utility;

import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import java.util.Objects;

/**
 * A helper class for parsing values without causing errors
 */
public final class ValueParsingHelper {

    private ValueParsingHelper() {

    }

    /**
     * Parses an integer from a string
     *
     * @param input        <p>The input given</p>
     * @param defaultValue <p>The default value to return if no integer could be parsed</p>
     * @return <p>The parsed integer, or the given default value</p>
     */
    public static int parseInt(@Nullable String input, int defaultValue) {
        if (input == null) {
            return defaultValue;
        }

        try {
            return Integer.parseInt(input);
        } catch (NumberFormatException exception) {
            return defaultValue;
        }
    }

    /**
     * Parses a string
     *
     * @param input        <p>The input string</p>
     * @param defaultValue <p>The default value to use if the string is null</p>
     * @return <p>The input string, or the default value</p>
     */
    @NotNull
    public static String parseString(@Nullable String input, @NotNull String defaultValue) {
        return Objects.requireNonNullElse(input, defaultValue);
    }

    /**
     * Parses a boolean
     *
     * @param input        <p>The input string</p>
     * @param defaultValue <p>The default value to use if the string is null</p>
     * @return <p>The parsed boolean, or the default value</p>
     */
    public static boolean parseBoolean(@Nullable String input, boolean defaultValue) {
        if (input == null || input.isEmpty()) {
            return defaultValue;
        } else {
            return Boolean.parseBoolean(input);
        }
    }

}