/*
 * 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/>.
 */

#include "WorldSession.h"
#include "CharacterCache.h"
#include "Common.h"
#include "DatabaseEnv.h"
#include "Group.h"
#include "GroupMgr.h"
#include "Log.h"
#include "ObjectAccessor.h"
#include "ObjectMgr.h"
#include "PartyPackets.h"
#include "Pet.h"
#include "PhasingHandler.h"
#include "Player.h"
#include "SocialMgr.h"
#include "SpellAuraEffects.h"
#include "SpellAuras.h"
#include "Util.h"
#include "Vehicle.h"
#include "World.h"
#include "WorldPacket.h"

class Aura;

/* differeces from off:
    -you can uninvite yourself - is is useful
    -you can accept invitation even if leader went offline
*/
/* todo:
    -group_destroyed msg is sent but not shown
    -reduce xp gaining when in raid group
    -quest sharing has to be corrected
    -FIX sending PartyMemberStats
*/

void WorldSession::SendPartyResult(PartyOperation operation, const std::string& member, PartyResult res, uint32 val /* = 0 */)
{
    WorldPackets::Party::PartyCommandResult packet;
    packet.Name = member;
    packet.Command = uint8(operation);
    packet.Result = uint8(res);
    packet.ResultData = val;
    packet.ResultGUID = ObjectGuid::Empty;

    SendPacket(packet.Write());
}

void WorldSession::HandlePartyInviteOpcode(WorldPackets::Party::PartyInviteClient& packet)
{
    // cheating
    if (!normalizePlayerName(packet.TargetName))
    {
        SendPartyResult(PARTY_OP_INVITE, packet.TargetName, ERR_BAD_PLAYER_NAME_S);
        return;
    }

    Player* invitingPlayer = GetPlayer();
    Player* invitedPlayer = ObjectAccessor::FindPlayerByName(packet.TargetName);

    // no player
    if (!invitedPlayer)
    {
        SendPartyResult(PARTY_OP_INVITE, packet.TargetName, ERR_BAD_PLAYER_NAME_S);
        return;
    }

    // player trying to invite himself (most likely cheating)
    if (invitedPlayer == invitingPlayer)
    {
        SendPartyResult(PARTY_OP_INVITE, packet.TargetName, ERR_BAD_PLAYER_NAME_S);
        return;
    }

    // restrict invite to GMs
    if (!sWorld->getBoolConfig(CONFIG_ALLOW_GM_GROUP) && !invitingPlayer->IsGameMaster() && invitedPlayer->IsGameMaster())
    {
        SendPartyResult(PARTY_OP_INVITE, packet.TargetName, ERR_BAD_PLAYER_NAME_S);
        return;
    }

    // can't group with
    if (!invitingPlayer->IsGameMaster() && !sWorld->getBoolConfig(CONFIG_ALLOW_TWO_SIDE_INTERACTION_GROUP) && invitingPlayer->GetTeam() != invitedPlayer->GetTeam())
    {
        SendPartyResult(PARTY_OP_INVITE, packet.TargetName, ERR_PLAYER_WRONG_FACTION);
        return;
    }
    if (invitingPlayer->GetInstanceId() != 0 && invitedPlayer->GetInstanceId() != 0 && invitingPlayer->GetInstanceId() != invitedPlayer->GetInstanceId() && invitingPlayer->GetMapId() == invitedPlayer->GetMapId())
    {
        SendPartyResult(PARTY_OP_INVITE, packet.TargetName, ERR_TARGET_NOT_IN_INSTANCE_S);
        return;
    }
    // just ignore us
    if (invitedPlayer->GetInstanceId() != 0 && invitedPlayer->GetDungeonDifficulty() != invitingPlayer->GetDungeonDifficulty())
    {
        SendPartyResult(PARTY_OP_INVITE, packet.TargetName, ERR_IGNORING_YOU_S);
        return;
    }

    if (invitedPlayer->GetSocial()->HasIgnore(invitingPlayer->GetGUID()))
    {
        SendPartyResult(PARTY_OP_INVITE, packet.TargetName, ERR_IGNORING_YOU_S);
        return;
    }

    if (!invitedPlayer->GetSocial()->HasFriend(invitingPlayer->GetGUID()) && invitingPlayer->getLevel() < sWorld->getIntConfig(CONFIG_PARTY_LEVEL_REQ))
    {
        SendPartyResult(PARTY_OP_INVITE, packet.TargetName, ERR_INVITE_RESTRICTED);
        return;
    }

    Group* group = invitingPlayer->GetGroup();
    if (group && group->isBGGroup())
        group = invitingPlayer->GetOriginalGroup();
    if (!group)
        group = invitingPlayer->GetGroupInvite();

    Group* group2 = invitedPlayer->GetGroup();
    if (group2 && group2->isBGGroup())
        group2 = invitedPlayer->GetOriginalGroup();
    // player already in another group or invited
    if (group2 || invitedPlayer->GetGroupInvite())
    {
        SendPartyResult(PARTY_OP_INVITE, packet.TargetName, ERR_ALREADY_IN_GROUP_S);

        if (group2)
        {
            // tell the player that they were invited but it failed as they were already in a group
            WorldPackets::Party::PartyInvite partyInvite;
            partyInvite.Initialize(invitingPlayer, packet.ProposedRoles, false);
            invitedPlayer->SendDirectMessage(partyInvite.Write());
        }

        return;
    }

    if (group)
    {
        // not have permissions for invite
        if (!group->IsLeader(invitingPlayer->GetGUID()) && !group->IsAssistant(invitingPlayer->GetGUID()))
        {
            if (group->IsCreated())
                SendPartyResult(PARTY_OP_INVITE, "", ERR_NOT_LEADER);
            return;
        }
        // not have place
        if (group->IsFull())
        {
            SendPartyResult(PARTY_OP_INVITE, "", ERR_GROUP_FULL);
            return;
        }
    }

    // ok, but group not exist, start a new group
    // but don't create and save the group to the DB until
    // at least one person joins
    if (!group)
    {
        group = new Group();
        // new group: if can't add then delete
        if (!group->AddLeaderInvite(invitingPlayer))
        {
            delete group;
            return;
        }
        if (!group->AddInvite(invitedPlayer))
        {
            group->RemoveAllInvites();
            delete group;
            return;
        }
    }
    else
    {
        // already existed group: if can't add then just leave
        if (!group->AddInvite(invitedPlayer))
        {
            return;
        }
    }

    WorldPackets::Party::PartyInvite partyInvite;
    partyInvite.Initialize(invitingPlayer, packet.ProposedRoles, true);
    invitedPlayer->SendDirectMessage(partyInvite.Write());

    SendPartyResult(PARTY_OP_INVITE, packet.TargetName, ERR_PARTY_RESULT_OK);
}

void WorldSession::HandlePartyInviteResponseOpcode(WorldPackets::Party::PartyInviteResponse& packet)
{
    Group* group = GetPlayer()->GetGroupInvite();

    if (!group)
        return;

    if (packet.Accept)
    {
        // Remove player from invitees in any case
        group->RemoveInvite(GetPlayer());

        if (group->GetLeaderGUID() == GetPlayer()->GetGUID())
        {
            TC_LOG_ERROR("network", "HandleGroupAcceptOpcode: player %s(%d) tried to accept an invite to his own group", GetPlayer()->GetName().c_str(), GetPlayer()->GetGUID().GetCounter());
            return;
        }

        // Group is full
        if (group->IsFull())
        {
            SendPartyResult(PARTY_OP_INVITE, "", ERR_GROUP_FULL);
            return;
        }

        Player* leader = ObjectAccessor::FindPlayer(group->GetLeaderGUID());

        // Forming a new group, create it
        if (!group->IsCreated())
        {
            // This can happen if the leader is zoning. To be removed once delayed actions for zoning are implemented
            if (!leader)
            {
                group->RemoveAllInvites();
                return;
            }

            // If we're about to create a group there really should be a leader present
            ASSERT(leader);
            group->RemoveInvite(leader);
            group->Create(leader);
            sGroupMgr->AddGroup(group);
        }

        // Everything is fine, do it, PLAYER'S GROUP IS SET IN ADDMEMBER!!!
        if (!group->AddMember(GetPlayer()))
            return;

        group->BroadcastGroupUpdate();
    }
    else
    {
        // Remember leader if online (group pointer will be invalid if group gets disbanded)
        Player* leader = ObjectAccessor::FindConnectedPlayer(group->GetLeaderGUID());

        // uninvite, group can be deleted
        GetPlayer()->UninviteFromGroup();

        if (!leader || !leader->GetSession())
            return;

        // report
        WorldPackets::Party::GroupDecline decline(GetPlayer()->GetName());
        leader->SendDirectMessage(decline.Write());
    }
}

void WorldSession::HandleGroupClearMarker(WorldPacket& recv_data)
{
    TC_LOG_DEBUG("network", "WORLD: Received CMSG_CLEAR_RAID_MARKER");

    uint8 marker;
    recv_data >> marker;

    if (Group* group = GetPlayer()->GetGroup())
    {
        group->RemoveGroupMarkerMask(1 << marker);
        group->SendRaidMarkerUpdate();
        group->RemoveMarker();
    }
}

void WorldSession::HandleGroupUninviteGuidOpcode(WorldPacket& recvData)
{
    TC_LOG_DEBUG("network", "WORLD: Received CMSG_GROUP_UNINVITE_GUID");

    ObjectGuid guid;
    std::string reason;
    recvData >> guid;
    recvData >> reason;

    //can't uninvite yourself
    if (guid == GetPlayer()->GetGUID())
    {
        TC_LOG_ERROR("network", "WorldSession::HandleGroupUninviteGuidOpcode: leader %s(%d) tried to uninvite himself from the group.",
            GetPlayer()->GetName().c_str(), GetPlayer()->GetGUID().GetCounter());
        return;
    }

    PartyResult res = GetPlayer()->CanUninviteFromGroup(guid);
    if (res != ERR_PARTY_RESULT_OK)
    {
        SendPartyResult(PARTY_OP_UNINVITE, "", res);
        return;
    }

    Group* grp = GetPlayer()->GetGroup();
    // grp is checked already above in CanUninviteFromGroup()
    ASSERT(grp);

    if (grp->IsMember(guid))
    {
        Player::RemoveFromGroup(grp, guid, GROUP_REMOVEMETHOD_KICK, GetPlayer()->GetGUID(), reason.c_str());
        return;
    }

    if (Player* player = grp->GetInvited(guid))
    {
        player->UninviteFromGroup();
        return;
    }

    SendPartyResult(PARTY_OP_UNINVITE, "", ERR_TARGET_NOT_IN_GROUP_S);
}

void WorldSession::HandleGroupUninviteOpcode(WorldPacket& recvData)
{
    TC_LOG_DEBUG("network", "WORLD: Received CMSG_GROUP_UNINVITE");

    std::string membername;
    recvData >> membername;

    // player not found
    if (!normalizePlayerName(membername))
        return;

    // can't uninvite yourself
    if (GetPlayer()->GetName() == membername)
    {
        TC_LOG_ERROR("network", "WorldSession::HandleGroupUninviteOpcode: leader %s(%d) tried to uninvite himself from the group.",
            GetPlayer()->GetName().c_str(), GetPlayer()->GetGUID().GetCounter());
        return;
    }

    PartyResult res = GetPlayer()->CanUninviteFromGroup();
    if (res != ERR_PARTY_RESULT_OK)
    {
        SendPartyResult(PARTY_OP_UNINVITE, "", res);
        return;
    }

    Group* grp = GetPlayer()->GetGroup();
    if (!grp)
        return;

    if (ObjectGuid guid = grp->GetMemberGUID(membername))
    {
        Player::RemoveFromGroup(grp, guid, GROUP_REMOVEMETHOD_KICK, GetPlayer()->GetGUID());
        return;
    }

    if (Player* player = grp->GetInvited(membername))
    {
        player->UninviteFromGroup();
        return;
    }

    SendPartyResult(PARTY_OP_UNINVITE, membername, ERR_TARGET_NOT_IN_GROUP_S);
}

void WorldSession::HandleGroupSetLeaderOpcode(WorldPacket& recvData)
{
    TC_LOG_DEBUG("network", "WORLD: Received CMSG_GROUP_SET_LEADER");

    ObjectGuid guid;
    recvData >> guid;

    Player* player = ObjectAccessor::FindConnectedPlayer(guid);
    Group* group = GetPlayer()->GetGroup();

    if (!group || !player)
        return;

    if (!group->IsLeader(GetPlayer()->GetGUID()) || player->GetGroup() != group)
        return;

    // Everything's fine, accepted.
    group->ChangeLeader(guid);
    group->SendUpdate();
}

void WorldSession::HandleGroupSetRolesOpcode(WorldPacket& recvData)
{
    TC_LOG_DEBUG("network", "WORLD: Received CMSG_GROUP_SET_ROLES");

    uint32 newRole;
    ObjectGuid guid1;                   // Assigner GUID
    ObjectGuid guid2;                   // Target GUID

    guid1 = GetPlayer()->GetGUID();

    recvData >> newRole;

    guid2[2] = recvData.ReadBit();
    guid2[6] = recvData.ReadBit();
    guid2[3] = recvData.ReadBit();
    guid2[7] = recvData.ReadBit();
    guid2[5] = recvData.ReadBit();
    guid2[1] = recvData.ReadBit();
    guid2[0] = recvData.ReadBit();
    guid2[4] = recvData.ReadBit();

    recvData.ReadByteSeq(guid2[6]);
    recvData.ReadByteSeq(guid2[4]);
    recvData.ReadByteSeq(guid2[1]);
    recvData.ReadByteSeq(guid2[3]);
    recvData.ReadByteSeq(guid2[0]);
    recvData.ReadByteSeq(guid2[5]);
    recvData.ReadByteSeq(guid2[2]);
    recvData.ReadByteSeq(guid2[7]);

    WorldPacket data(SMSG_GROUP_SET_ROLE, 24);

    data.WriteBit(guid1[1]);
    data.WriteBit(guid2[0]);
    data.WriteBit(guid2[2]);
    data.WriteBit(guid2[4]);
    data.WriteBit(guid2[7]);
    data.WriteBit(guid2[3]);
    data.WriteBit(guid1[7]);
    data.WriteBit(guid2[5]);
    data.WriteBit(guid1[5]);
    data.WriteBit(guid1[4]);
    data.WriteBit(guid1[3]);
    data.WriteBit(guid2[6]);
    data.WriteBit(guid1[2]);
    data.WriteBit(guid1[6]);
    data.WriteBit(guid2[1]);
    data.WriteBit(guid1[0]);

    data.WriteByteSeq(guid1[7]);
    data.WriteByteSeq(guid2[3]);
    data.WriteByteSeq(guid1[6]);
    data.WriteByteSeq(guid2[4]);
    data.WriteByteSeq(guid2[0]);
    data << uint32(newRole);            // New Role
    data.WriteByteSeq(guid2[6]);
    data.WriteByteSeq(guid2[2]);
    data.WriteByteSeq(guid1[0]);
    data.WriteByteSeq(guid1[4]);
    data.WriteByteSeq(guid2[1]);
    data.WriteByteSeq(guid1[3]);
    data.WriteByteSeq(guid1[5]);
    data.WriteByteSeq(guid1[2]);
    data.WriteByteSeq(guid2[5]);
    data.WriteByteSeq(guid2[7]);
    data.WriteByteSeq(guid1[1]);
    data << uint32(0);                  // Old Role

    if (Group* group = GetPlayer()->GetGroup())
    {
        /// @todo probably should be sent only if (oldRole != newRole)
        group->BroadcastPacket(&data, false);
        group->SetLfgRoles(guid2, newRole);
    }
    else
        SendPacket(&data);
}

void WorldSession::HandleGroupDisbandOpcode(WorldPacket& /*recvData*/)
{
    TC_LOG_DEBUG("network", "WORLD: Received CMSG_GROUP_DISBAND");

    Group* grp = GetPlayer()->GetGroup();
    Group* grpInvite = GetPlayer()->GetGroupInvite();
    if (!grp && !grpInvite)
        return;

    if (_player->InBattleground())
    {
        SendPartyResult(PARTY_OP_INVITE, "", ERR_INVITE_RESTRICTED);
        return;
    }

    /** error handling **/
    /********************/

    // everything's fine, do it
    if (grp)
    {
        SendPartyResult(PARTY_OP_LEAVE, GetPlayer()->GetName(), ERR_PARTY_RESULT_OK);
        GetPlayer()->RemoveFromGroup(GROUP_REMOVEMETHOD_LEAVE);
    }
    else if (grpInvite && grpInvite->GetLeaderGUID() == GetPlayer()->GetGUID())
    { // pending group creation being cancelled
        SendPartyResult(PARTY_OP_LEAVE, GetPlayer()->GetName(), ERR_PARTY_RESULT_OK);
        grpInvite->Disband();
    }
}

void WorldSession::HandleLootMethodOpcode(WorldPacket& recvData)
{
    TC_LOG_DEBUG("network", "WORLD: Received CMSG_LOOT_METHOD");

    uint32 lootMethod;
    ObjectGuid lootMaster;
    uint32 lootThreshold;
    recvData >> lootMethod >> lootMaster >> lootThreshold;

    Group* group = GetPlayer()->GetGroup();
    if (!group)
        return;

    /** error handling **/
    if (!group->IsLeader(GetPlayer()->GetGUID()))
        return;

    if (group->isLFGGroup())
        return;

    if (lootMethod > NEED_BEFORE_GREED)
        return;

    if (lootThreshold < ITEM_QUALITY_UNCOMMON || lootThreshold > ITEM_QUALITY_ARTIFACT)
        return;

    if (lootMethod == MASTER_LOOT && !group->IsMember(lootMaster))
        return;
    /********************/

    // everything's fine, do it
    group->SetLootMethod((LootMethod)lootMethod);
    group->SetMasterLooterGuid(lootMaster);
    group->SetLootThreshold((ItemQualities)lootThreshold);
    group->SendUpdate();
}

void WorldSession::HandleLootRoll(WorldPacket& recvData)
{
    ObjectGuid guid;
    uint32 itemSlot;
    uint8  rollType;
    recvData >> guid;                  // guid of the item rolled
    recvData >> itemSlot;
    recvData >> rollType;              // 0: pass, 1: need, 2: greed

    Group* group = GetPlayer()->GetGroup();
    if (!group)
        return;

    group->CountRollVote(GetPlayer()->GetGUID(), guid, rollType);

    switch (rollType)
    {
        case ROLL_NEED:
            GetPlayer()->UpdateAchievementCriteria(ACHIEVEMENT_CRITERIA_TYPE_ROLL_NEED, 1);
            break;
        case ROLL_GREED:
            GetPlayer()->UpdateAchievementCriteria(ACHIEVEMENT_CRITERIA_TYPE_ROLL_GREED, 1);
            break;
    }
}

void WorldSession::HandleMinimapPingOpcode(WorldPacket& recvData)
{
    TC_LOG_DEBUG("network", "WORLD: Received MSG_MINIMAP_PING");

    if (!GetPlayer()->GetGroup())
        return;

    float x, y;
    recvData >> x;
    recvData >> y;

    //TC_LOG_DEBUG("misc", "Received opcode MSG_MINIMAP_PING X: %f, Y: %f", x, y);

    /** error handling **/
    /********************/

    // everything's fine, do it
    WorldPacket data(MSG_MINIMAP_PING, (8+4+4));
    data << uint64(GetPlayer()->GetGUID());
    data << float(x);
    data << float(y);
    GetPlayer()->GetGroup()->BroadcastPacket(&data, true, -1, GetPlayer()->GetGUID());
}

void WorldSession::HandleRandomRollOpcode(WorldPacket& recvData)
{
    uint32 minimum, maximum;
    recvData >> minimum;
    recvData >> maximum;

    /** error handling **/
    if (minimum > maximum || maximum > 10000)                // < 32768 for urand call
        return;
    /********************/

    // everything's fine, do it
    GetPlayer()->DoRandomRoll(minimum, maximum);
}

void WorldSession::HandleRaidTargetUpdateOpcode(WorldPacket& recvData)
{
    TC_LOG_DEBUG("network", "WORLD: Received MSG_RAID_TARGET_UPDATE");

    Group* group = GetPlayer()->GetGroup();
    if (!group)
        return;

    uint8 x;
    recvData >> x;

    /** error handling **/
    /********************/

    // everything's fine, do it
    if (x == 0xFF)                                           // target icon request
        group->SendTargetIconList(this);
    else                                                    // target icon update
    {
        if (group->isRaidGroup() && !group->IsLeader(GetPlayer()->GetGUID()) && !group->IsAssistant(GetPlayer()->GetGUID()))
            return;

        ObjectGuid guid;
        recvData >> guid;

        if (guid.IsPlayer())
        {
            Player* target = ObjectAccessor::FindConnectedPlayer(guid);

            if (!target || target->IsHostileTo(GetPlayer()))
                return;
        }

        group->SetTargetIcon(x, _player->GetGUID(), guid);
    }
}

void WorldSession::HandleGroupRaidConvertOpcode(WorldPacket& recvData)
{
    TC_LOG_DEBUG("network", "WORLD: Received CMSG_GROUP_RAID_CONVERT");

    Group* group = GetPlayer()->GetGroup();
    if (!group)
        return;

    if (_player->InBattleground() || group->isLFGGroup())
        return;

    // error handling
    if (!group->IsLeader(GetPlayer()->GetGUID()) || group->GetMembersCount() < 2)
        return;

    // everything's fine, do it (is it 0 (PARTY_OP_INVITE) correct code)
    SendPartyResult(PARTY_OP_INVITE, "", ERR_PARTY_RESULT_OK);

    // New 4.x: it is now possible to convert a raid to a group if member count is 5 or less

    bool toRaid;
    recvData >> toRaid;

    if (toRaid)
        group->ConvertToRaid();
    else
        group->ConvertToGroup();
}

void WorldSession::HandleGroupRequestJoinUpdates(WorldPacket& /*recvData*/)
{
    Group* group = GetPlayer()->GetGroup();
    if (!group)
        return;

    WorldPacket data(SMSG_REAL_GROUP_UPDATE, 1 + 4 + 8);
    data << uint8(group->GetGroupFlags());
    data << uint32(group->GetMembersCount() - 1);
    data << uint64(group->GetLeaderGUID());
    SendPacket(&data);
}

void WorldSession::HandleGroupChangeSubGroupOpcode(WorldPacket& recvData)
{
    TC_LOG_DEBUG("network", "WORLD: Received CMSG_GROUP_CHANGE_SUB_GROUP");

    // we will get correct pointer for group here, so we don't have to check if group is BG raid
    Group* group = GetPlayer()->GetGroup();
    if (!group)
        return;

    std::string name;
    uint8 groupNr;
    recvData >> name;
    recvData >> groupNr;

    if (!normalizePlayerName(name))
        return;

    if (groupNr >= MAX_RAID_SUBGROUPS)
        return;

    ObjectGuid senderGuid = GetPlayer()->GetGUID();
    if (!group->IsLeader(senderGuid) && !group->IsAssistant(senderGuid))
        return;

    if (!group->HasFreeSlotSubGroup(groupNr))
        return;

    ObjectGuid guid;
    if (Player* movedPlayer = ObjectAccessor::FindConnectedPlayerByName(name))
        guid = movedPlayer->GetGUID();
    else
        guid = sCharacterCache->GetCharacterGuidByName(name);

    if (guid.IsEmpty())
        return;

    group->ChangeMembersGroup(guid, groupNr);
}

void WorldSession::HandleGroupSwapSubGroupOpcode(WorldPacket& recvData)
{
    TC_LOG_DEBUG("network", "WORLD: Received CMSG_GROUP_SWAP_SUB_GROUP");
    std::string name1;
    std::string name2;

    recvData >> name1;
    recvData >> name2;
}

void WorldSession::HandleGroupAssistantLeaderOpcode(WorldPacket& recvData)
{
    TC_LOG_DEBUG("network", "WORLD: Received CMSG_GROUP_ASSISTANT_LEADER");

    Group* group = GetPlayer()->GetGroup();
    if (!group)
        return;

    if (!group->IsLeader(GetPlayer()->GetGUID()))
        return;

    ObjectGuid guid;
    bool apply;
    recvData >> guid;
    recvData >> apply;

    group->SetGroupMemberFlag(guid, apply, MEMBER_FLAG_ASSISTANT);
}

void WorldSession::HandlePartyAssignmentOpcode(WorldPacket& recvData)
{
    TC_LOG_DEBUG("network", "WORLD: Received MSG_PARTY_ASSIGNMENT");

    Group* group = GetPlayer()->GetGroup();
    if (!group)
        return;

    ObjectGuid senderGuid = GetPlayer()->GetGUID();
    if (!group->IsLeader(senderGuid) && !group->IsAssistant(senderGuid))
        return;

    uint8 assignment;
    bool apply;
    ObjectGuid guid;
    recvData >> assignment >> apply;
    recvData >> guid;

    switch (assignment)
    {
        case GROUP_ASSIGN_MAINASSIST:
            group->RemoveUniqueGroupMemberFlag(MEMBER_FLAG_MAINASSIST);
            group->SetGroupMemberFlag(guid, apply, MEMBER_FLAG_MAINASSIST);
            break;
        case GROUP_ASSIGN_MAINTANK:
            group->RemoveUniqueGroupMemberFlag(MEMBER_FLAG_MAINTANK);           // Remove main assist flag from current if any.
            group->SetGroupMemberFlag(guid, apply, MEMBER_FLAG_MAINTANK);
            break;
        default:
            break;
    }

    group->SendUpdate();
}

void WorldSession::HandleRaidReadyCheckOpcode(WorldPacket& recvData)
{
    TC_LOG_DEBUG("network", "WORLD: Received MSG_RAID_READY_CHECK");

    Group* group = GetPlayer()->GetGroup();
    if (!group)
        return;

    if (recvData.empty())                                   // request
    {
        /** error handling **/
        if (!group->IsLeader(GetPlayer()->GetGUID()) && !group->IsAssistant(GetPlayer()->GetGUID()))
            return;
        /********************/

        // everything's fine, do it
        WorldPacket data(MSG_RAID_READY_CHECK, 8);
        data << GetPlayer()->GetGUID();
        group->BroadcastPacket(&data, false, -1);

        group->OfflineReadyCheck();
    }
    else                                                    // answer
    {
        uint8 state;
        recvData >> state;

        // everything's fine, do it
        WorldPacket data(MSG_RAID_READY_CHECK_CONFIRM, 9);
        data << uint64(GetPlayer()->GetGUID());
        data << uint8(state);
        group->BroadcastReadyCheck(&data);
    }
}

void WorldSession::HandleRaidReadyCheckFinishedOpcode(WorldPacket& /*recvData*/)
{
    //Group* group = GetPlayer()->GetGroup();
    //if (!group)
    //    return;

    //if (!group->IsLeader(GetPlayer()->GetGUID()) && !group->IsAssistant(GetPlayer()->GetGUID()))
    //    return;

    // Is any reaction need?
}

/*this procedure handles clients CMSG_REQUEST_PARTY_MEMBER_STATS request*/
void WorldSession::HandleRequestPartyMemberStatsOpcode(WorldPacket& recvData)
{
    TC_LOG_DEBUG("network", "WORLD: Received CMSG_REQUEST_PARTY_MEMBER_STATS");
    ObjectGuid Guid;
    recvData >> Guid;

    Player* player = ObjectAccessor::FindConnectedPlayer(Guid);
    if (!player)
    {
        WorldPackets::Party::PartyMemberState packet(true);
        packet.MemberGuid = Guid;
        packet.ChangeMask = GROUP_UPDATE_FLAG_STATUS;
        packet.MemberStats.Status = MEMBER_STATUS_OFFLINE;
        SendPacket(packet.Write());
        return;
    }

    WorldPackets::Party::PartyMemberState packet(true);
    packet.Initialize(player);
    SendPacket(packet.Write());
}

void WorldSession::HandleRequestRaidInfoOpcode(WorldPacket& /*recvData*/)
{
    // every time the player checks the character screen
    _player->SendRaidInfo();
}

void WorldSession::HandleOptOutOfLootOpcode(WorldPacket& recvData)
{
    TC_LOG_DEBUG("network", "WORLD: Received CMSG_OPT_OUT_OF_LOOT");

    bool passOnLoot;
    recvData >> passOnLoot; // 1 always pass, 0 do not pass

    // ignore if player not loaded
    if (!GetPlayer())                                        // needed because STATUS_AUTHED
    {
        if (passOnLoot)
            TC_LOG_ERROR("network", "CMSG_OPT_OUT_OF_LOOT value<>0 for not-loaded character!");
        return;
    }

    GetPlayer()->SetPassOnGroupLoot(passOnLoot != 0);
}

void WorldSession::HandleRolePollBeginOpcode(WorldPacket& recvData)
{
    TC_LOG_DEBUG("network", "WORLD: Received CMSG_ROLE_POLL_BEGIN");

    Group* group = GetPlayer()->GetGroup();
    if (!group)
        return;

    if (recvData.empty())
    {
        if (!group->IsLeader(GetPlayer()->GetGUID()) && !group->IsAssistant(GetPlayer()->GetGUID()))
            return;

        ObjectGuid guid = GetPlayer()->GetGUID();

        WorldPacket data(SMSG_ROLE_POLL_BEGIN, 8);
        data.WriteBit(guid[1]);
        data.WriteBit(guid[5]);
        data.WriteBit(guid[7]);
        data.WriteBit(guid[3]);
        data.WriteBit(guid[2]);
        data.WriteBit(guid[4]);
        data.WriteBit(guid[0]);
        data.WriteBit(guid[6]);
        data.WriteByteSeq(guid[4]);
        data.WriteByteSeq(guid[7]);
        data.WriteByteSeq(guid[0]);
        data.WriteByteSeq(guid[5]);
        data.WriteByteSeq(guid[1]);
        data.WriteByteSeq(guid[6]);
        data.WriteByteSeq(guid[2]);
        data.WriteByteSeq(guid[3]);

        GetPlayer()->GetGroup()->BroadcastPacket(&data, true);
    }
}

void WorldSession::HandleSetEveryoneIsAssistant(WorldPackets::Party::SetEveryoneIsAssistant& packet)
{
    Group* group = GetPlayer()->GetGroup();
    if (!group)
        return;

    if (!group->IsLeader(GetPlayer()->GetGUID()))
        return;

    group->SetEveryoneIsAssistant(packet.EveryoneIsAssistant);
}