mcMMO/src/main/java/com/gmail/nossr50/util/player/UserManager.java

package com.gmail.nossr50.util.player;

import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.bukkit.OfflinePlayer;
import org.bukkit.entity.Player;

import com.gmail.nossr50.datatypes.player.McMMOPlayer;
import com.gmail.nossr50.util.Misc;

public final class UserManager {
    private final static Map<String, McMMOPlayer> players = new HashMap<String, McMMOPlayer>();

    private UserManager() {};

    /**
     * Add a new user.
     *
     * @param player The player to create a user record for
     * @return the player's {@link McMMOPlayer} object
     */
    public static McMMOPlayer addUser(Player player) {
        String playerName = player.getName();
        McMMOPlayer mcMMOPlayer = players.get(playerName);

        if (mcMMOPlayer != null) {
            mcMMOPlayer.setPlayer(player); // The player object is different on each reconnection and must be updated
        }
        else {
            mcMMOPlayer = new McMMOPlayer(player);
            players.put(playerName, mcMMOPlayer);
        }

        return mcMMOPlayer;
    }

    /**
     * Remove a user.
     *
     * @param playerName The name of the player to remove
     */
    public static void remove(String playerName) {
        players.remove(playerName);
    }

    /**
     * Clear all users.
     */
    public static void clearAll() {
        players.clear();
    }

    /**
     * Save all users.
     */
    public static void saveAll() {
        for (McMMOPlayer mcMMOPlayer : players.values()) {
            mcMMOPlayer.getProfile().save();
        }
    }

    public static Set<String> getPlayerNames() {
        return players.keySet();
    }

    public static Collection<McMMOPlayer> getPlayers() {
        return players.values();
    }

    /**
     * Get the McMMOPlayer of a player by a partial name.
     *
     * @param playerName The partial name of the player whose McMMOPlayer to retrieve
     * @return the player's McMMOPlayer object
     */
    public static McMMOPlayer getPlayer(String playerName) {
        List<String> matches = Misc.matchPlayer(playerName);

        if (matches.size() == 1) {
            playerName = matches.get(0);
        }

        return players.get(playerName);
    }

    /**
     * Get the McMMOPlayer of a player by the exact name.
     *
     * @param playerName The exact name of the player whose McMMOPlayer to retrieve
     * @return the player's McMMOPlayer object
     */
    public static McMMOPlayer getPlayerExact(String playerName) {
        return players.get(playerName);
    }

    /**
     * Get the McMMOPlayer of a player.
     *
     * @param player The player whose McMMOPlayer to retrieve
     * @return the player's McMMOPlayer object
     */
    public static McMMOPlayer getPlayer(OfflinePlayer player) {
        return players.get(player.getName());
    }
}