Server/src/engine/objects/PlayerFriends.java

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//      Magicbane Emulator Project © 2013 - 2022
//                www.magicbane.com


package engine.objects;

import engine.Enum.DispatchChannel;
import engine.gameManager.DbManager;
import engine.gameManager.SessionManager;
import engine.net.Dispatch;
import engine.net.DispatchMessage;
import engine.net.client.msg.UpdateFriendStatusMessage;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.HashSet;

public class PlayerFriends {

    public static HashMap<Integer, HashSet<Integer>> PlayerFriendsMap = new HashMap<>();
    public int playerUID;
    public int friendUID;

    /**
     * ResultSet Constructor
     */

    public PlayerFriends(ResultSet rs) throws SQLException {
        this.playerUID = rs.getInt("playerUID");
        this.friendUID = rs.getInt("friendUID");

        //cache player friends.
        //hashset already created, just add to set.
        if (PlayerFriendsMap.containsKey(playerUID)) {
            HashSet<Integer> playerFriendSet = PlayerFriendsMap.get(playerUID);
            playerFriendSet.add(friendUID);
            //hashset not yet created, create new set, and add to map.
        } else {
            HashSet<Integer> playerFriendSet = new HashSet<>();
            playerFriendSet.add(friendUID);
            PlayerFriendsMap.put(this.playerUID, playerFriendSet);
        }

    }

    public PlayerFriends(int playerUID, int friendUID) {
        super();
        this.playerUID = playerUID;
        this.friendUID = friendUID;
    }

    public static void AddToFriends(int playerID, int friendID) {
        HashSet<Integer> friends = PlayerFriendsMap.get(playerID);

        if (friends != null) {
            //already in friends list, don't do anything.
            if (friends.contains(friendID))
                return;

            DbManager.PlayerCharacterQueries.ADD_FRIEND(playerID, friendID);
            friends.add(friendID);
        } else {
            friends = new HashSet<>();
            DbManager.PlayerCharacterQueries.ADD_FRIEND(playerID, friendID);
            friends.add(friendID);
            PlayerFriendsMap.put(playerID, friends);
        }
    }

    public static void RemoveFromFriends(int playerID, int friendID) {

        if (!CanRemove(playerID, friendID))
            return;

        HashSet<Integer> friends = PlayerFriendsMap.get(playerID);

        if (friends != null) {
            DbManager.PlayerCharacterQueries.REMOVE_FRIEND(playerID, friendID);
            friends.remove(friendID);
        }
    }

    public static boolean CanRemove(int playerID, int toRemove) {
        if (PlayerFriendsMap.get(playerID) == null)
            return false;

        if (PlayerFriendsMap.get(playerID).isEmpty())
            return false;

        if (!PlayerFriendsMap.get(playerID).contains(toRemove))
            return false;

        return true;
    }

    public static void SendFriendsStatus(PlayerCharacter player, boolean online) {
        HashSet<Integer> friendsSet = PlayerFriends.PlayerFriendsMap.get(player.getObjectUUID());
        if (friendsSet != null) {
            for (int friendID : friendsSet) {
                PlayerCharacter friend = SessionManager.getPlayerCharacterByID(friendID);
                if (friend == null)
                    continue;
                UpdateFriendStatusMessage outMsg = new UpdateFriendStatusMessage(player);
                outMsg.online = online;
                Dispatch dispatch = Dispatch.borrow(friend, outMsg);
                DispatchMessage.dispatchMsgDispatch(dispatch, DispatchChannel.SECONDARY);
            }
        }

    }

    public int getPlayerUID() {
        return playerUID;
    }
}