package de.viper.survivalplus.commands;

import de.viper.survivalplus.SurvivalPlus;
import net.md_5.bungee.api.chat.ClickEvent;
import net.md_5.bungee.api.chat.TextComponent;
import org.bukkit.ChatColor;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.configuration.file.FileConfiguration;
import org.bukkit.entity.Player;

import java.util.ArrayList;
import java.util.List;

public class PluginCommand implements CommandExecutor {
    private final SurvivalPlus plugin;
    private static final int COMMANDS_PER_PAGE = 5;

    public PluginCommand(SurvivalPlus plugin) {
        this.plugin = plugin;
    }

    @Override
    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
        FileConfiguration lang = plugin.getLangConfig();

        if (args.length == 0 || args[0].equalsIgnoreCase("help")) {
            int page = 1;
            if (args.length > 1 && args[0].equalsIgnoreCase("help")) {
                try {
                    page = Integer.parseInt(args[1]);
                    if (page < 1) page = 1;
                } catch (NumberFormatException e) {
                    sender.sendMessage(color(lang.getString("sp.invalid-subcommand", "§cUngültiger Unterbefehl! Verwendung: /sp [reload|help]")));
                    return true;
                }
            }
            showHelp(sender, page);
            return true;
        }

        if (args[0].equalsIgnoreCase("reload")) {
            if (!sender.hasPermission("survivalplus.reload")) {
                sender.sendMessage(color(lang.getString("no-permission", "&cKeine Berechtigung!")));
                return true;
            }
            plugin.reloadPlugin();
            sender.sendMessage(color(lang.getString("plugin.reloaded", "&aPlugin neu geladen.")));
            return true;
        }

        sender.sendMessage(color(lang.getString("sp.invalid-subcommand", "&cUngültiger Unterbefehl!")));
        return true;
    }

    private void showHelp(CommandSender sender, int page) {
        FileConfiguration help = plugin.getHelpConfig();
        FileConfiguration lang = plugin.getLangConfig();

        if (help == null || help.getConfigurationSection("commands") == null) {
            sender.sendMessage(color(lang.getString("sp.help-not-found", "&cHilfe nicht gefunden.")));
            return;
        }

        List<String> commands = new ArrayList<>(help.getConfigurationSection("commands").getKeys(false));
        if (commands.isEmpty()) {
            sender.sendMessage(color(lang.getString("sp.help-not-found", "&cKeine Befehle verfügbar.")));
            return;
        }

        int totalPages = (int) Math.ceil((double) commands.size() / COMMANDS_PER_PAGE);
        if (page > totalPages) page = totalPages;
        if (page < 1) page = 1;

        sender.sendMessage(color(help.getString("header", "&7===== &eSurvivalPlus Hilfe &7=====")));

        int startIndex = (page - 1) * COMMANDS_PER_PAGE;
        int endIndex = Math.min(startIndex + COMMANDS_PER_PAGE, commands.size());

        for (int i = startIndex; i < endIndex; i++) {
            String cmd = commands.get(i);
            String usage = help.getString("commands." + cmd + ".usage", "");
            String description = help.getString("commands." + cmd + ".description", "");
            sender.sendMessage(color(usage + " §7- " + description));
        }

        if (sender instanceof Player player) {
            TextComponent navigation = new TextComponent();

            if (page > 1) {
                TextComponent prev = new TextComponent(color(help.getString("navigation.prev", "« Vorherige ")));
                prev.setClickEvent(new ClickEvent(ClickEvent.Action.RUN_COMMAND, "/sp help " + (page - 1)));
                navigation.addExtra(prev);
            } else {
                navigation.addExtra(color(help.getString("navigation.prev-disabled", "« ")));
            }

            TextComponent pageInfo = new TextComponent(color(help.getString("navigation.page", " §fSeite {current} von {total} "))
                .replace("{current}", String.valueOf(page))
                .replace("{total}", String.valueOf(totalPages)));
            navigation.addExtra(pageInfo);

            if (page < totalPages) {
                TextComponent next = new TextComponent(color(help.getString("navigation.next", " Nächste »")));
                next.setClickEvent(new ClickEvent(ClickEvent.Action.RUN_COMMAND, "/sp help " + (page + 1)));
                navigation.addExtra(next);
            } else {
                navigation.addExtra(color(help.getString("navigation.next-disabled", " »")));
            }

            player.spigot().sendMessage(navigation);
        } else {
            for (String cmd : commands) {
                String usage = help.getString("commands." + cmd + ".usage", "");
                String description = help.getString("commands." + cmd + ".description", "");
                sender.sendMessage(color(usage + " §7- " + description));
            }
        }

        sender.sendMessage(color(help.getString("footer", "&7==========================")));
    }

    private String color(String input) {
        return ChatColor.translateAlternateColorCodes('&', input);
    }
}