tweaks724/src/main/java/eu/m724/tweaks/module/chat/ChatRoomLoader.java

/*
 * Copyright (C) 2025  Minecon724
 * Tweaks724 is licensed under the GNU General Public License. See the LICENSE.md file
 * in the project root for the full license text.
 */

package eu.m724.tweaks.module.chat;

import net.md_5.bungee.api.ChatColor;
import org.bukkit.Bukkit;
import org.bukkit.configuration.file.YamlConfiguration;
import org.bukkit.plugin.Plugin;

import java.io.File;
import java.io.IOException;
import java.util.UUID;

public class ChatRoomLoader {
    private static File chatRoomsDir;

    static void init(Plugin plugin) {
        chatRoomsDir = new File(plugin.getDataFolder(), "storage/rooms");
        chatRoomsDir.mkdirs();
    }

    /**
     * Get the file of persistent storage of a chat room
     * @return the file or null if ID is invalid
     */
    static File getFile(String id) {
        if (validateId(id) != 0)
            return null;

        return new File(chatRoomsDir, id + ".yml");
    }

    /**
     * Checks if an id is valid and returns why it's not
     *
     * @return 0 if ok<br>
     *         1 if too short (<2 chars)
     *         2 if too long (>20 chars)
     *         3 if not lowercase
     *         4 if not alphanumeric
     */
    static int validateId(String id) {
        if (id.length() < 2) {
            return 1;
        } else if (id.length() > 20) {
            return 2;
        } else if (!id.equals(id.toLowerCase())) {
            return 3;
        } else if (!id.chars().allMatch(Character::isLetterOrDigit)) {
            return 4;
        }

        return 0;
    }

    /**
     * Loads a chat room from disk<br>
     * A lowercase, alphanumeric id is expected
     *
     * @param id the id of the chat room
     * @return the chat room or null if no such chat room
     */
    static ChatRoom load(String id) {
        File chatRoomFile = getFile(id);
        if (chatRoomFile == null || !chatRoomFile.exists())
            return null;

        YamlConfiguration configuration = YamlConfiguration.loadConfiguration(chatRoomFile);

        ChatRoom chatRoom = new ChatRoom(
                id,
                configuration.getString("password"),
                Bukkit.getOfflinePlayer(
                        new UUID(
                                configuration.getLong("owner.msb"),
                                configuration.getLong("owner.lsb")
                        )
                )
        );
        chatRoom.color = ChatColor.of(configuration.getString("color", chatRoom.color.getName()));

        return chatRoom;
    }

    /**
     * Saves a chat room to disk<br>
     * A lowercase, alphanumeric id is expected
     *
     * @throws IOException if saving failed
     */
    static void save(ChatRoom chatRoom) throws IOException {
        YamlConfiguration configuration = new YamlConfiguration();
        configuration.set("password", chatRoom.password);
        configuration.set("color", chatRoom.color.getName());
        // TODO consider just making this str to make it easier
        configuration.set("owner.msb", chatRoom.owner.getUniqueId().getMostSignificantBits());
        configuration.set("owner.lsb", chatRoom.owner.getUniqueId().getLeastSignificantBits());

        File chatRoomFile = getFile(chatRoom.id);
        configuration.save(chatRoomFile);
    }
}