package net.knarcraft.placeholdersigns.command;

import net.knarcraft.knarlib.formatting.StringFormatter;
import net.knarcraft.knarlib.util.TabCompletionHelper;
import net.knarcraft.placeholdersigns.PlaceholderSigns;
import net.knarcraft.placeholdersigns.config.PlaceholderSignMessage;
import net.knarcraft.placeholdersigns.container.PlaceholderSign;
import net.knarcraft.placeholdersigns.handler.PlaceholderSignHandler;
import net.knarcraft.placeholdersigns.util.TabCompleteHelper;
import org.bukkit.block.Block;
import org.bukkit.block.Sign;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.command.TabExecutor;
import org.bukkit.entity.Player;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

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

public class SetPlaceholderUpdateDelayCommand implements TabExecutor {

    @Override
    public boolean onCommand(@NotNull CommandSender commandSender, @NotNull Command command, @NotNull String s,
                             @NotNull String[] arguments) {
        PlaceholderSigns placeholderSigns = PlaceholderSigns.getInstance();
        StringFormatter stringFormatter = placeholderSigns.getStringFormatter();
        if (!(commandSender instanceof Player player)) {
            stringFormatter.displayErrorMessage(commandSender, PlaceholderSignMessage.ERROR_PLAYER_ONLY);
            return false;
        }

        if (arguments.length < 1) {
            return false;
        }

        Block targetBlock = player.getTargetBlockExact(7);
        if (targetBlock == null || !(targetBlock.getState() instanceof Sign sign)) {
            stringFormatter.displayErrorMessage(commandSender, PlaceholderSignMessage.ERROR_NOT_LOOKING_AT_SIGN);
            return false;
        }

        Integer updateDelay = null;
        try {
            updateDelay = Integer.parseInt(arguments[0]);
        } catch (NumberFormatException exception) {
            if (!arguments[0].equalsIgnoreCase("null")) {
                return false;
            }
        }

        PlaceholderSignHandler signHandler = placeholderSigns.getSignHandler();
        PlaceholderSign placeholderSign = signHandler.getFromLocation(sign.getLocation());
        if (placeholderSign != null) {
            placeholderSign.setUpdateDelay(updateDelay);
            signHandler.save();
            stringFormatter.displaySuccessMessage(player, PlaceholderSignMessage.SUCCESS_UPDATE_DELAY_CHANGED);
            return true;
        } else {
            stringFormatter.displayErrorMessage(player, PlaceholderSignMessage.ERROR_NOT_LOOKING_AT_PLACEHOLDER_SIGN);
            return false;
        }
    }

    @Nullable
    @Override
    public List<String> onTabComplete(@NotNull CommandSender commandSender, @NotNull Command command, @NotNull String s,
                                      @NotNull String[] arguments) {
        if (arguments.length == 1) {
            return TabCompletionHelper.filterMatchingStartsWith(TabCompleteHelper.getDelays(), arguments[0]);
        } else {
            return new ArrayList<>();
        }
    }

}