package net.minecraft;

import java.util.regex.Pattern;
import org.jetbrains.annotations.Contract;
import org.jspecify.annotations.Nullable;

public enum ChatFormatting {
	BLACK('0'),
	DARK_BLUE('1'),
	DARK_GREEN('2'),
	DARK_AQUA('3'),
	DARK_RED('4'),
	DARK_PURPLE('5'),
	GOLD('6'),
	GRAY('7'),
	DARK_GRAY('8'),
	BLUE('9'),
	GREEN('a'),
	AQUA('b'),
	RED('c'),
	LIGHT_PURPLE('d'),
	YELLOW('e'),
	WHITE('f'),
	OBFUSCATED('k'),
	BOLD('l'),
	STRIKETHROUGH('m'),
	UNDERLINE('n'),
	ITALIC('o'),
	RESET('r');

	public static final char PREFIX_CODE = '§';
	private static final Pattern STRIP_FORMATTING_PATTERN = Pattern.compile("(?i)§[0-9A-FK-OR]");
	private final char code;
	private final String toString;

	private ChatFormatting(final char code) {
		this.code = code;
		this.toString = "§" + code;
	}

	public String toString() {
		return this.toString;
	}

	@Contract("!null->!null;_->_")
	@Nullable
	public static String stripFormatting(@Nullable final String input) {
		return input == null ? null : STRIP_FORMATTING_PATTERN.matcher(input).replaceAll("");
	}

	@Nullable
	public static ChatFormatting getByCode(final char code) {
		char sanitized = Character.toLowerCase(code);

		for (ChatFormatting format : values()) {
			if (format.code == sanitized) {
				return format;
			}
		}

		return null;
	}
}