/*
 * This file is part of LuckPerms, licensed under the MIT License.
 *
 *  Copyright (c) lucko (Luck) <luck@lucko.me>
 *  Copyright (c) contributors
 *
 *  Permission is hereby granted, free of charge, to any person obtaining a copy
 *  of this software and associated documentation files (the "Software"), to deal
 *  in the Software without restriction, including without limitation the rights
 *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *  copies of the Software, and to permit persons to whom the Software is
 *  furnished to do so, subject to the following conditions:
 *
 *  The above copyright notice and this permission notice shall be included in all
 *  copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 *  SOFTWARE.
 */

package me.lucko.luckperms.common.utils;

import lombok.experimental.UtilityClass;

import me.lucko.luckperms.common.config.ConfigKeys;
import me.lucko.luckperms.common.defaults.Rule;
import me.lucko.luckperms.common.model.User;
import me.lucko.luckperms.common.plugin.LuckPermsPlugin;

import java.util.UUID;
import java.util.concurrent.CompletableFuture;

/**
 * Utilities for use in platform listeners
 */
@UtilityClass
public class LoginHelper {

    public static User loadUser(LuckPermsPlugin plugin, UUID u, String username, boolean joinUuidSave) {
        final long startTime = System.currentTimeMillis();

        final UuidCache cache = plugin.getUuidCache();
        if (!plugin.getConfiguration().get(ConfigKeys.USE_SERVER_UUIDS)) {
            UUID uuid = plugin.getStorage().noBuffer().getUUID(username).join();
            if (uuid != null) {
                cache.addToCache(u, uuid);
            } else {
                // No previous data for this player
                plugin.getApiProvider().getEventFactory().handleUserFirstLogin(u, username);
                cache.addToCache(u, u);
                CompletableFuture<Boolean> future = plugin.getStorage().noBuffer().saveUUIDData(u, username);
                if (joinUuidSave) {
                    future.join();
                }
            }
        } else {
            String name = plugin.getStorage().noBuffer().getName(u).join();
            if (name == null) {
                plugin.getApiProvider().getEventFactory().handleUserFirstLogin(u, username);
            }

            // Online mode, no cache needed. This is just for name -> uuid lookup.
            CompletableFuture<Boolean> future = plugin.getStorage().noBuffer().saveUUIDData(u, username);
            if (joinUuidSave) {
                future.join();
            }
        }

        plugin.getStorage().noBuffer().loadUser(cache.getUUID(u), username).join();
        User user = plugin.getUserManager().getIfLoaded(cache.getUUID(u));
        if (user == null) {
            plugin.getLog().warn("Failed to load user: " + username);
            throw new RuntimeException("Failed to load user");
        } else {
            // Setup defaults for the user
            boolean save = false;
            for (Rule rule : plugin.getConfiguration().get(ConfigKeys.DEFAULT_ASSIGNMENTS)) {
                if (rule.apply(user)) {
                    save = true;
                }
            }

            // If they were given a default, persist the new assignments back to the storage.
            if (save) {
                plugin.getStorage().noBuffer().saveUser(user).join();
            }

            // Does some minimum pre-calculations to (maybe) speed things up later.
            user.preCalculateData();
        }

        final long time = System.currentTimeMillis() - startTime;
        if (time >= 1000) {
            plugin.getLog().warn("Processing login for " + username + " took " + time + "ms.");
        }

        return user;
    }

}
