/*
 * This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef _TICKETMGR_H
#define _TICKETMGR_H

#include "ObjectGuid.h"
#include "DatabaseEnvFwd.h"
#include <map>

class ChatHandler;
class Player;
class WorldPacket;
class WorldSession;

// from blizzard lua
enum GMTicketSystemStatus
{
    GMTICKET_QUEUE_STATUS_DISABLED = 0,
    GMTICKET_QUEUE_STATUS_ENABLED  = 1
};

enum GMTicketStatus
{
    GMTICKET_STATUS_HASTEXT                      = 0x06,
    GMTICKET_STATUS_DEFAULT                      = 0x0A
};

enum GMTicketResponse
{
    GMTICKET_RESPONSE_ALREADY_EXIST               = 1,
    GMTICKET_RESPONSE_CREATE_SUCCESS              = 2,
    GMTICKET_RESPONSE_CREATE_ERROR                = 3,
    GMTICKET_RESPONSE_UPDATE_SUCCESS              = 4,
    GMTICKET_RESPONSE_UPDATE_ERROR                = 5,
    GMTICKET_RESPONSE_TICKET_DELETED              = 9
};

// from Blizzard LUA:
// GMTICKET_ASSIGNEDTOGM_STATUS_NOT_ASSIGNED = 0;    -- ticket is not currently assigned to a gm
// GMTICKET_ASSIGNEDTOGM_STATUS_ASSIGNED = 1;        -- ticket is assigned to a normal gm
// GMTICKET_ASSIGNEDTOGM_STATUS_ESCALATED = 2;        -- ticket is in the escalation queue
// 3 is a custom value and should never actually be sent
enum GMTicketEscalationStatus
{
    TICKET_UNASSIGNED                             = 0,
    TICKET_ASSIGNED                               = 1,
    TICKET_IN_ESCALATION_QUEUE                    = 2,
    TICKET_ESCALATED_ASSIGNED                     = 3
};

// from blizzard lua
enum GMTicketOpenedByGMStatus
{
    GMTICKET_OPENEDBYGM_STATUS_NOT_OPENED = 0,      // ticket has never been opened by a gm
    GMTICKET_OPENEDBYGM_STATUS_OPENED     = 1       // ticket has been opened by a gm
};

enum LagReportType
{
    LAG_REPORT_TYPE_LOOT = 1,
    LAG_REPORT_TYPE_AUCTION_HOUSE = 2,
    LAG_REPORT_TYPE_MAIL = 3,
    LAG_REPORT_TYPE_CHAT = 4,
    LAG_REPORT_TYPE_MOVEMENT = 5,
    LAG_REPORT_TYPE_SPELL = 6
};

enum TicketType
{
    TICKET_TYPE_OPEN = 0,
    TICKET_TYPE_CLOSED = 1,
    TICKET_TYPE_CHARACTER_DELETED = 2,
};

class TC_GAME_API GmTicket
{
public:
    GmTicket();
    GmTicket(Player* player);
    ~GmTicket();

    bool IsClosed() const { return _type != TICKET_TYPE_OPEN; }
    bool IsCompleted() const { return _completed; }
    bool IsFromPlayer(ObjectGuid guid) const { return guid == _playerGuid; }
    bool IsAssigned() const { return !_assignedTo.IsEmpty(); }
    bool IsAssignedTo(ObjectGuid guid) const { return guid == _assignedTo; }
    bool IsAssignedNotTo(ObjectGuid guid) const { return IsAssigned() && !IsAssignedTo(guid); }

    uint32 GetId() const { return _id; }
    Player* GetPlayer() const;
    std::string const& GetPlayerName() const { return _playerName; }
    std::string const& GetMessage() const { return _message; }
    Player* GetAssignedPlayer() const;
    ObjectGuid GetAssignedToGUID() const { return _assignedTo; }
    std::string GetAssignedToName() const;
    uint64 GetLastModifiedTime() const { return _lastModifiedTime; }
    GMTicketEscalationStatus GetEscalatedStatus() const { return _escalatedStatus; }

    void SetEscalatedStatus(GMTicketEscalationStatus escalatedStatus) { _escalatedStatus = escalatedStatus; }
    void SetAssignedTo(ObjectGuid guid, bool isAdmin)
    {
        _assignedTo = guid;
        if (isAdmin && _escalatedStatus == TICKET_IN_ESCALATION_QUEUE)
            _escalatedStatus = TICKET_ESCALATED_ASSIGNED;
        else if (_escalatedStatus == TICKET_UNASSIGNED)
            _escalatedStatus = TICKET_ASSIGNED;
    }
    void SetClosedBy(ObjectGuid value) { _closedBy = value; _type = TICKET_TYPE_CLOSED; }
    void SetResolvedBy(ObjectGuid value) { _resolvedBy = value; }
    void SetCompleted() { _completed = true; }
    void SetMessage(std::string const& message);
    void SetComment(std::string const& comment) { _comment = comment; }
    void SetViewed() { _viewed = true; }
    void SetUnassigned();
    void SetPosition(uint32 mapId, float x, float y, float z);
    void SetGmAction(uint32 needResponse, bool needMoreHelp);

    void AppendResponse(std::string const& response) { _response += response; }

    bool LoadFromDB(Field* fields);
    void SaveToDB(CharacterDatabaseTransaction trans) const;
    void DeleteFromDB();

    void WritePacket(WorldPacket& data) const;
    void SendResponse(WorldSession* session) const;

    void TeleportTo(Player* player) const;
    std::string FormatMessageString(ChatHandler& handler, bool detailed = false) const;
    std::string FormatMessageString(ChatHandler& handler, char const* szClosedName, char const* szAssignedToName, char const* szUnassignedName, char const* szDeletedName, char const* szCompletedName) const;

    void SetChatLog(std::list<uint32> time, std::string const& log);
    std::string const& GetChatLog() const { return _chatLog; }

private:
    uint32 _id;
    TicketType _type; // 0 = Open, 1 = Closed, 2 = Character deleted
    ObjectGuid _playerGuid;
    std::string _playerName;
    float _posX;
    float _posY;
    float _posZ;
    uint16 _mapId;
    std::string _message;
    uint64 _createTime;
    uint64 _lastModifiedTime;
    ObjectGuid _closedBy; // 0 = Open or Closed by Console (if type = 1), playerGuid = GM who closed it or player abandoned ticket or read the GM response message.
    ObjectGuid _resolvedBy; // 0 = Open or Resolved by Console (if type = 1), playerGuid = GM who resolved it by closing or completing the ticket.
    ObjectGuid _assignedTo;
    std::string _comment;
    bool _completed;
    GMTicketEscalationStatus _escalatedStatus;
    bool _viewed;
    bool _needResponse; /// @todo find out the use of this, and then store it in DB
    bool _needMoreHelp;
    std::string _response;
    std::string _chatLog; // No need to store in db, will be refreshed every session client side
};
typedef std::map<uint32, GmTicket*> GmTicketList;

class TC_GAME_API TicketMgr
{
private:
    TicketMgr();
    ~TicketMgr();

public:
    static TicketMgr* instance();

    void LoadTickets();
    void LoadSurveys();

    GmTicket* GetTicket(uint32 ticketId)
    {
        GmTicketList::iterator itr = _ticketList.find(ticketId);
        if (itr != _ticketList.end())
            return itr->second;

        return nullptr;
    }

    GmTicket* GetTicketByPlayer(ObjectGuid playerGuid)
    {
        for (GmTicketList::const_iterator itr = _ticketList.begin(); itr != _ticketList.end(); ++itr)
            if (itr->second && itr->second->IsFromPlayer(playerGuid) && !itr->second->IsClosed())
                return itr->second;

        return nullptr;
    }

    GmTicket* GetOldestOpenTicket()
    {
        for (GmTicketList::const_iterator itr = _ticketList.begin(); itr != _ticketList.end(); ++itr)
            if (itr->second && !itr->second->IsClosed() && !itr->second->IsCompleted())
                return itr->second;

        return nullptr;
    }

    void AddTicket(GmTicket* ticket);
    void CloseTicket(uint32 ticketId, ObjectGuid source);
    void ResolveAndCloseTicket(uint32 ticketId, ObjectGuid source); // used when GM resolves a ticket by simply closing it
    void RemoveTicket(uint32 ticketId);

    bool GetStatus() const { return _status; }
    void SetStatus(bool status) { _status = status; }

    uint64 GetLastChange() const { return _lastChange; }
    void UpdateLastChange();

    uint32 GenerateTicketId() { return ++_lastTicketId; }
    uint32 GetOpenTicketCount() const { return _openTicketCount; }
    uint32 GetNextSurveyID() { return ++_lastSurveyId; }

    void Initialize();
    void ResetTickets();

    void ShowList(ChatHandler& handler, bool onlineOnly) const;
    void ShowClosedList(ChatHandler& handler) const;
    void ShowEscalatedList(ChatHandler& handler) const;

    void SendTicket(WorldSession* session, GmTicket* ticket) const;

private:
    GmTicketList _ticketList;

    bool   _status;
    uint32 _lastTicketId;
    uint32 _lastSurveyId;
    uint32 _openTicketCount;
    uint64 _lastChange;
};

#define sTicketMgr TicketMgr::instance()

#endif // _TICKETMGR_H