mcMMO/src/main/java/com/gmail/nossr50/commands/database/ConvertDatabaseCommand.java

package com.gmail.nossr50.commands.database;

import com.gmail.nossr50.database.DatabaseManager;
import com.gmail.nossr50.database.DatabaseManagerFactory;
import com.gmail.nossr50.datatypes.database.DatabaseType;
import com.gmail.nossr50.datatypes.player.PlayerProfile;
import com.gmail.nossr50.locale.LocaleLoader;
import com.gmail.nossr50.mcMMO;
import com.gmail.nossr50.runnables.database.DatabaseConversionTask;
import com.gmail.nossr50.runnables.player.PlayerProfileLoadingTask;
import com.gmail.nossr50.util.player.UserManager;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.jetbrains.annotations.NotNull;

public class ConvertDatabaseCommand implements CommandExecutor {
    @Override
    public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, String[] args) {
        if (args.length == 2) {
            DatabaseType previousType = DatabaseType.getDatabaseType(args[1]);
            DatabaseType newType = mcMMO.getDatabaseManager().getDatabaseType();

            if (previousType == newType || (newType == DatabaseType.CUSTOM && DatabaseManagerFactory.getCustomDatabaseManagerClass().getSimpleName().equalsIgnoreCase(args[1]))) {
                sender.sendMessage(LocaleLoader.getString("Commands.mcconvert.Database.Same", newType.toString()));
                return true;
            }

            DatabaseManager oldDatabase = DatabaseManagerFactory.createDatabaseManager(previousType, mcMMO.getUsersFilePath(), mcMMO.p.getLogger(), mcMMO.p.getPurgeTime(), mcMMO.p.getAdvancedConfig().getStartingLevel());
            if(oldDatabase == null) {
                sender.sendMessage("Unable to load the old database! Check your log for errors.");
                return true;
            }

            if (previousType == DatabaseType.CUSTOM) {
                Class<?> clazz;

                try {
                    clazz = Class.forName(args[1]);

                    if (!DatabaseManager.class.isAssignableFrom(clazz)) {
                        sender.sendMessage(LocaleLoader.getString("Commands.mcconvert.Database.InvalidType", args[1]));
                        return true;
                    }

                    oldDatabase = DatabaseManagerFactory.createCustomDatabaseManager((Class<? extends DatabaseManager>) clazz);
                } catch (Throwable e) {
                    e.printStackTrace();
                    sender.sendMessage(LocaleLoader.getString("Commands.mcconvert.Database.InvalidType", args[1]));
                    return true;
                }
            }

            sender.sendMessage(LocaleLoader.getString("Commands.mcconvert.Database.Start", previousType.toString(), newType.toString()));

            UserManager.saveAll();
            UserManager.clearAll();

            for (Player player : mcMMO.p.getServer().getOnlinePlayers()) {
                PlayerProfile profile = oldDatabase.loadPlayerProfile(player);

                if (profile.isLoaded()) {
                    mcMMO.getDatabaseManager().saveUser(profile);
                }

                new PlayerProfileLoadingTask(player).runTaskLaterAsynchronously(mcMMO.p, 1); // 1 Tick delay to ensure the player is marked as online before we begin loading
            }

            new DatabaseConversionTask(oldDatabase, sender, previousType.toString(), newType.toString()).runTaskAsynchronously(mcMMO.p);
            return true;
        }
        return false;
    }
}