package fr.creatruth.land.command;

import fr.creatruth.land.LandMain;
import fr.creatruth.land.LandManager;
import fr.creatruth.land.utils.EHelp;
import fr.creatruth.land.utils.Message;
import fr.creatruth.land.utils.NumberFormat;
import fr.creatruth.land.utils.Sender;
import org.bukkit.World;
import org.bukkit.block.CommandBlock;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;

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

public class CmdHelp {

    private static List<EHelp> helps = new ArrayList<>();

    public static void showHelp(CommandSender sender, String[] args) {
        showHelp(sender, NumberFormat.getInteger((args.length > 1 ? args[1] : null), 1));
    }

    public static void showHelp(CommandSender sender, int page) {
        if (sender instanceof CommandBlock) return;
        Player player = Sender.getPlayer(sender);
        int max = 4, maxPage;
        List<EHelp> commands = new ArrayList<>();
        for (EHelp eHelp : getHelp()) if (eHelp == null || eHelp.hasPerm(sender)) commands.add(eHelp);
        maxPage = (int) Math.ceil((double) commands.size() / max);
        if (page > maxPage) page = maxPage;
        else if (page < 1) page = 1;
        StringBuilder builder = new StringBuilder();
        builder.append("§6---------------- §lAide  parcelles§6 ----------------\n");
        for (int ctr = (page - 1) * max; ctr < (page * max) && ctr < commands.size(); ctr++)
            addToHelp(player, builder, commands.get(ctr));
        builder.append("\n§6--------------------- §e").append(page);
        builder.append("§7/§e").append(maxPage).append(" §6-----------------------");
        Message.send(sender, builder);
    }

    private static void addToHelp(Player player, StringBuilder builder, EHelp help) {
        builder.append("\n");
        if (help == null) {
            if (player != null) {
                World w = LandManager.isLandWorld(player) ? player.getWorld() : LandManager.getFirstWorld();
                int maxLands = LandMain.getLandLimit(player);
                builder.append(String.format("§2Nombre de parcelle à vous dans ce monde: §f%d§2 sur §f%s§2.",
                        LandManager.getNbOwnedLand(player, w), (maxLands == -1 ? "illimité" : " " + maxLands)));
                builder.append("\n§7§oArguments: §e§o<arg> = Obligatoire §7§oet §e§o[arg] = Option");
            }
        }
        else {
            builder.append("§a ").append(help.getCommand()).append("\n");
            builder.append("§f").append(help.getDescription());
        }
    }

    private static List<EHelp> getHelp() {
        if (helps.size() == 0) {
            helps.add(null); //Limit
            helps.addAll(Arrays.asList(EHelp.values()));
        }
        return helps;
    }
}