/*
 *  Copyright 2011 BetaSteward_at_googlemail.com. All rights reserved.
 * 
 *  Redistribution and use in source and binary forms, with or without modification, are
 *  permitted provided that the following conditions are met:
 * 
 *     1. Redistributions of source code must retain the above copyright notice, this list of
 *        conditions and the following disclaimer.
 * 
 *     2. Redistributions in binary form must reproduce the above copyright notice, this list
 *        of conditions and the following disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 * 
 *  THIS SOFTWARE IS PROVIDED BY BetaSteward_at_googlemail.com ``AS IS'' AND ANY EXPRESS OR IMPLIED
 *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 *  FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BetaSteward_at_googlemail.com OR
 *  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 *  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 *  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 *  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 *  The views and conclusions contained in the software and documentation are those of the
 *  authors and should not be interpreted as representing official policies, either expressed
 *  or implied, of BetaSteward_at_googlemail.com.
 */
package mage.server;

import java.util.Date;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.UUID;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.TimeUnit;
import mage.cards.decks.Deck;
import mage.game.Table;
import mage.interfaces.callback.ClientCallback;
import mage.players.net.UserData;
import mage.server.draft.DraftSession;
import mage.server.game.GameManager;
import mage.server.game.GameSession;
import mage.server.tournament.TournamentSession;
import mage.server.util.SystemUtil;
import mage.view.TableClientMessage;
import org.apache.log4j.Logger;


/**
 *
 * @author BetaSteward_at_googlemail.com
 */
public class User {

    private static final Logger logger = Logger.getLogger(User.class);

    public enum UserState {
        Created, Connected, Disconnected, Reconnected;
    }

    public enum DisconnectReason {
        LostConnection, Disconnected, CleaningUp, ConnectingOtherInstance;
    }

    private final UUID userId;
    private final String userName;    
    private final String host;    
    private final Date connectionTime;
    private final Map<UUID, Table> tables;
    private final Map<UUID, GameSession> gameSessions;
    private final Map<UUID, DraftSession> draftSessions;
    private final Map<UUID, TournamentSession> tournamentSessions;
    private final Map<UUID, TournamentSession> constructing;
    private final Map<UUID, Deck> sideboarding;
    
    private String sessionId;
    private String info;
    private Date lastActivity;
    private UserState userState;
    private UserData userData;

    public User(String userName, String host) {
        this.userId = UUID.randomUUID();
        this.userName = userName;
        this.host = host;
        this.userState = UserState.Created;
        
        this.connectionTime = new Date();
        this.lastActivity = new Date();
        
        this.tables = new ConcurrentHashMap<>();
        this.gameSessions = new ConcurrentHashMap<>();
        this.draftSessions = new ConcurrentHashMap<>();
        this.tournamentSessions = new ConcurrentHashMap<>();
        this.constructing = new ConcurrentHashMap<>();
        this.sideboarding = new ConcurrentHashMap<>();
        
        this.sessionId = "";
    }

    public String getName() {
        return userName;
    }

    public UUID getId() {
        return userId;
    }

    public String getHost() {
        return host;
    }

    public String getSessionId() {
        return sessionId;
    }

    public void setSessionId(String sessionId) {
        this.sessionId = sessionId;
        if (sessionId.isEmpty()) {
            userState = UserState.Disconnected;
            logger.debug(new StringBuilder("User ").append(userName).append(" disconnected - userId = ").append(userId.toString()).toString());
        } else if (userState == UserState.Created) {
            userState = UserState.Connected;
            logger.debug(new StringBuilder("User ").append(userName).append(" created - userId = ").append(userId.toString()).toString());
        } else {
            userState = UserState.Reconnected;
            reconnect();
            logger.info(new StringBuilder("User ").append(userName).append(" reconnected - userId = ").append(userId.toString()).toString());
        }
    }

    public boolean isConnected() {
        return userState.equals(UserState.Connected) || userState.equals(UserState.Reconnected);
    }

    public String getDisconnectDuration() {
        long secondsDisconnected = SystemUtil.getDateDiff(lastActivity, new Date(), TimeUnit.SECONDS);
        long secondsLeft = 0;
        String sign = "";
        if (secondsDisconnected > (3 * 60)) {            
            sign="-";
            secondsLeft = secondsDisconnected - (3 *60);
        } else {
            secondsLeft = (3 * 60) - secondsDisconnected; 
        }

        int minutes = (int) secondsLeft / 60;
        int seconds = (int) secondsLeft % 60;
        return new StringBuilder(sign).append(Integer.toString(minutes)).append(":").append(seconds > 9 ? seconds: "0" + Integer.toString(seconds)).toString();
    }

    public Date getConnectionTime() {
        return connectionTime;
    }

    public synchronized void fireCallback(final ClientCallback call) {
        if (isConnected()) {
            Session session = SessionManager.getInstance().getSession(sessionId);
            if (session != null) {
                session.fireCallback(call);
            }
        }
    }

    public void joinedTable(final UUID roomId, final UUID tableId, boolean isTournament) {
        fireCallback(new ClientCallback("joinedTable", tableId, new TableClientMessage(roomId, tableId, isTournament)));
    }

    public void gameStarted(final UUID gameId, final UUID playerId) {
        fireCallback(new ClientCallback("startGame", gameId, new TableClientMessage(gameId, playerId)));
    }

    public void draftStarted(final UUID draftId, final UUID playerId) {
        fireCallback(new ClientCallback("startDraft", draftId, new TableClientMessage(draftId, playerId)));
    }

    public void tournamentStarted(final UUID tournamentId, final UUID playerId) {
        fireCallback(new ClientCallback("startTournament", tournamentId, new TableClientMessage(tournamentId, playerId)));
    }

    public void sideboard(final Deck deck, final UUID tableId, final int time, boolean limited) {
        fireCallback(new ClientCallback("sideboard", tableId, new TableClientMessage(deck, tableId, time, limited)));
        sideboarding.put(tableId, deck);
    }

    public void construct(final Deck deck, final UUID tableId, final int time) {
        fireCallback(new ClientCallback("construct", tableId, new TableClientMessage(deck, tableId, time)));
    }

    public void showTournament(final UUID tournamentId) {
        fireCallback(new ClientCallback("showTournament", tournamentId));
    }

    public void showGameEndDialog(final UUID gameId) {
        fireCallback(new ClientCallback("showGameEndDialog", gameId));
    }

    public void showUserMessage(final String titel,  String message) {
        List<String> messageData = new LinkedList<>();
        messageData.add(titel);
        messageData.add(message);
        fireCallback(new ClientCallback("showUserMessage", null, messageData ));
    }

    public void watchGame(final UUID gameId) {
        fireCallback(new ClientCallback("watchGame", gameId));
    }

    public void replayGame(final UUID gameId) {
        fireCallback(new ClientCallback("replayGame", gameId));
    }

    public void sendPlayerUUID(final UUID gameId, final UUID data) {
        lastActivity = new Date();
        GameManager.getInstance().sendPlayerUUID(gameId, userId, data);
    }

    public void sendPlayerString(final UUID gameId, final String data) {
        lastActivity = new Date();
        GameManager.getInstance().sendPlayerString(gameId, userId, data);
    }

    public void sendPlayerBoolean(final UUID gameId, final Boolean data)  {
        lastActivity = new Date();
        GameManager.getInstance().sendPlayerBoolean(gameId, userId, data);
    }

    public void sendPlayerInteger(final UUID gameId, final Integer data) {
        lastActivity = new Date();
        GameManager.getInstance().sendPlayerInteger(gameId, userId, data);
    }

    public void updateLastActivity() {
        lastActivity = new Date();
    }

    public boolean isExpired(Date expired) {
        logger.trace(new StringBuilder("isExpired: User ").append(userName).append(" lastActivity: ").append(lastActivity).append(" expired: ").append(expired).toString());
        return /*userState == UserState.Disconnected && */ lastActivity.before(expired);
    }

    private void reconnect() {
        for (Entry<UUID, Table> entry: tables.entrySet()) {
            joinedTable(entry.getValue().getRoomId(), entry.getValue().getId(), entry.getValue().isTournament());
        }
        for (Entry<UUID, TournamentSession> entry: tournamentSessions.entrySet()) {
            tournamentStarted(entry.getValue().getTournamentId(), entry.getKey());
            entry.getValue().init();
            entry.getValue().update();
        }

        for (Entry<UUID, GameSession> entry: gameSessions.entrySet()) {
            gameStarted(entry.getValue().getGameId(), entry.getKey());
            entry.getValue().init();
            GameManager.getInstance().sendPlayerString(entry.getValue().getGameId(), userId, "");
        }

        for (Entry<UUID, DraftSession> entry: draftSessions.entrySet()) {
            draftStarted(entry.getValue().getDraftId(), entry.getKey());
            entry.getValue().init();
            entry.getValue().update();
        }
        
        for (Entry<UUID, TournamentSession> entry: constructing.entrySet()) {
            entry.getValue().construct(0); // TODO: Check if this is correct
        }
        for (Entry<UUID, Deck> entry: sideboarding.entrySet()) {
            TableController controller = TableManager.getInstance().getController(entry.getKey());
            sideboard(entry.getValue(), entry.getKey(), controller.getRemainingTime(), controller.getOptions().isLimited());
        }
    }

    public void addGame(UUID playerId, GameSession gameSession) {
        gameSessions.put(playerId, gameSession);
    }

    public void removeGame(UUID playerId) {
        gameSessions.remove(playerId);
    }

    public void addDraft(UUID playerId, DraftSession draftSession) {
        draftSessions.put(playerId, draftSession);
    }

    public void removeDraft(UUID playerId) {
        draftSessions.remove(playerId);
    }

    public void addTournament(UUID playerId, TournamentSession tournamentSession) {
        tournamentSessions.put(playerId, tournamentSession);
    }

    public void removeTournament(UUID playerId) {
        tournamentSessions.remove(playerId);
    }

    public void addTable(UUID playerId, Table table) {
        tables.put(playerId, table);
    }

    public void removeTable(UUID playerId) {
        tables.remove(playerId);
    }

    public void addConstructing(UUID playerId, TournamentSession tournamentSession) {
        constructing.put(playerId, tournamentSession);
    }

    public void removeConstructing(UUID playerId) {
        constructing.remove(playerId);
    }

    public void removeSideboarding(UUID tableId) {
        sideboarding.remove(tableId);
    }

    public void kill(DisconnectReason reason) {
        logger.debug("kill: kill game sessions");
        for (GameSession gameSession: gameSessions.values()) {
            gameSession.kill();
        }
        logger.debug("kill: kill draft sessions");
        for (DraftSession draftSession: draftSessions.values()) {
            draftSession.setKilled();
        }
        logger.debug("kill: kill tournament sessions");
        for (TournamentSession tournamentSession: tournamentSessions.values()) {
            tournamentSession.setKilled();
        }
        logger.debug("kill: leave tables");
        for (Entry<UUID, Table> entry: tables.entrySet()) {
            TableManager.getInstance().leaveTable(userId, entry.getValue().getId());
        }
        logger.debug("kill: remove user from chat");
        ChatManager.getInstance().removeUser(userId, reason);
    }

    public void setUserData(UserData userData) {
        this.userData = userData;
    }

    public UserData getUserData() {
        return this.userData;
    }

    public String getGameInfo() {
        StringBuilder sb = new StringBuilder();

        String disconnectInfo = "";
        if (!isConnected()) {
            disconnectInfo = new StringBuilder(" (discon. ").append(getDisconnectDuration()).append(")").toString();
        }
        int draft = 0, match = 0, sideboard = 0, tournament = 0, construct = 0;
        for (Map.Entry<UUID, Table> tableEntry : tables.entrySet()) {
            Table table = tableEntry.getValue();
            if (table.isTournament()) {
                if (!table.getTournament().getPlayer(tableEntry.getKey()).getEliminated()) {
                    switch (table.getState()) {
                        case CONSTRUCTING:
                            construct++;
                            break;
                        case DRAFTING:
                            draft++;
                            break;
                        case DUELING:
                            tournament++;
                            break;
                    }
                    if (!isConnected()) {
                        table.getTournament().getPlayer(tableEntry.getKey()).setDisconnectInfo(disconnectInfo);
                    } else {
                        table.getTournament().getPlayer(tableEntry.getKey()).setDisconnectInfo("");
                    }
                }
            } else {
                switch (table.getState()) {
                    case SIDEBOARDING:
                        sideboard++;
                        break;
                    case DUELING:
                        match++;
                        break;
                }
            }
        }
        if (match > 0) {
            sb.append("MP: ").append(match).append(" ");
        }
        if (sideboard > 0) {
            sb.append("MS: ").append(sideboard).append(" ");
        }
        if (draft > 0) {
            sb.append("TD: ").append(draft).append(" ");
        }
        if (construct > 0) {
            sb.append("TC: ").append(construct).append(" ");
        }
        if (tournament > 0) {
            sb.append("TP: ").append(tournament).append(" ");
        }
        sb.append(disconnectInfo);
        return sb.toString();
    }

    public String getInfo() {
        return info;
    }

    public void setInfo(String Info) {
        this.info = Info;
    }
}