package com.loki.lochat.gradient.util;

import com.loki.lochat.gradient.GradientModule;
import com.loki.lochat.gradient.config.GradientConfig;
import com.loki.lochat.gradient.data.GradientPlayerData;
import net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer;
import org.bukkit.entity.Player;

import java.util.List;

/**
 * Утилита для обновления отображаемого имени игрока
 */
public final class DisplayNameUtil {

    private static final LegacyComponentSerializer SERIALIZER = LegacyComponentSerializer.builder()
            .character('&')
            .hexCharacter('#')
            .hexColors()
            .build();

    private DisplayNameUtil() {}

    public static void updateDisplayName(GradientModule module, Player player, GradientPlayerData data) {
        GradientConfig cfg = module.getConfig();
        
        String prefix = null;
        String prefixFormat = cfg.getPrefixFormat();
        
        if (data.isPrefixEnabled() && data.hasPrefix()) {
            prefix = data.getPrefix();
        } else {
            String lpPrefix = module.getLuckPermsHook().getActivePrefix(player);
            if (lpPrefix != null && !lpPrefix.isEmpty()) {
                String displayName = buildWithLuckPermsPrefix(
                        lpPrefix, 
                        player.getName(), 
                        data.isColorEnabled() ? data.getColors() : null, 
                        cfg.isUseLegacyRgbFormat(),
                        cfg.isContinuousGradient()
                );
                var component = SERIALIZER.deserialize(displayName);
                player.displayName(component);
                player.playerListName(component);
                return;
            }
        }
        
        String displayName = GradientUtil.buildDisplayName(
                prefix,
                player.getName(),
                data.isColorEnabled() ? data.getColors() : null,
                cfg.isGradientOnPrefix(),
                cfg.isContinuousGradient(),
                prefixFormat,
                cfg.isUseLegacyRgbFormat()
        );
        var component = SERIALIZER.deserialize(displayName);
        player.displayName(component);
        player.playerListName(component);
    }

    private static String buildWithLuckPermsPrefix(String lpPrefix, String nick, 
                                                    List<String> colors, 
                                                    boolean useLegacyFormat,
                                                    boolean continuousGradient) {
        if (colors == null || colors.isEmpty()) {
            return lpPrefix + nick;
        }
        
        if (continuousGradient) {
            String cleanPrefix = stripColors(lpPrefix);
            String fullText = cleanPrefix + nick;
            return GradientUtil.applyGradient(fullText, colors, useLegacyFormat);
        } else {
            return lpPrefix + GradientUtil.applyGradient(nick, colors, useLegacyFormat);
        }
    }

    private static String stripColors(String text) {
        if (text == null) return null;
        return text.replaceAll("(?i)(§x(§[0-9a-f]){6}|§[0-9a-fk-or]|&[0-9a-fk-or]|&#[0-9a-f]{6})", "");
    }

    public static String buildColoredPrefix(GradientModule module, GradientPlayerData data) {
        if (!data.hasPrefix() || !data.isPrefixEnabled()) return null;
        
        GradientConfig cfg = module.getConfig();
        String prefix = cfg.getPrefixFormat().replace("{prefix}", data.getPrefix()).stripTrailing();
        
        return (data.hasColors() && data.isColorEnabled() && cfg.isGradientOnPrefix())
                ? GradientUtil.applyGradient(prefix, data.getColors(), cfg.isUseLegacyRgbFormat())
                : prefix;
    }

    /**
     * Получает полное отображаемое имя игрока с градиентом
     */
    public static String getFullDisplayName(GradientModule module, Player player) {
        GradientPlayerData data = module.getDataManager().getPlayerData(player.getUniqueId());
        GradientConfig cfg = module.getConfig();
        
        String prefix = null;
        if (data.isPrefixEnabled() && data.hasPrefix()) {
            prefix = data.getPrefix();
        }
        
        return GradientUtil.buildDisplayName(
                prefix,
                player.getName(),
                data.isColorEnabled() ? data.getColors() : null,
                cfg.isGradientOnPrefix(),
                cfg.isContinuousGradient(),
                cfg.getPrefixFormat(),
                cfg.isUseLegacyRgbFormat()
        );
    }
}