#include "ScriptPCH.h"

#define MIN_INTERVAL 18000 // 30 minutes
#define MAX_INTERVAL 72000 // 2 hours
#define DESPAWN_TIMER_IN_MILISECONDS 60000 // 1 minutes
#define NPC_WRATHION 190050 // Task Master
#define SPELL_TELEPORT 33056 // Visual

class custom_world_event : public WorldScript
{
public:
    custom_world_event() : WorldScript("custom_world_event") { }

    uint32 Event_Timer;

    void OnStartup()
    {
        Event_Timer = urand(MIN_INTERVAL, MAX_INTERVAL);
    }

    void OnUpdate(const uint32 diff)
    {
        if (Event_Timer <= diff)
        {
            SessionMap Players = sWorld->GetAllSessions();
            if (Players.empty())
                return;

            for (SessionMap::iterator itr = Players.find(urand(0, Players.size())); itr != Players.end(); ++itr)
            {
                if (!itr->second || !itr->second->GetPlayer() || !itr->second->GetPlayer()->IsInWorld())
                    continue;

                Player* player = itr->second->GetPlayer();
                Map* playerMap = player->GetMap();

                if (!player->isDead() && !player->isInCombat() && !player->GetMotionMaster()->GetMotionSlotType(FLIGHT_MOTION_TYPE) && !playerMap->IsBattlegroundOrArena() && !playerMap->IsRaidOrHeroicDungeon() && !player->isAFK() && !player->isGameMaster())
                {
                    Creature* wrathion = player->SummonCreature(NPC_WRATHION, player->GetPositionX(), player->GetPositionY()+5.0f, player->GetPositionZ(), player->GetOrientation(), TEMPSUMMON_TIMED_DESPAWN, DESPAWN_TIMER_IN_MILISECONDS);
                    wrathion->AI()->DoCast(wrathion, SPELL_TELEPORT);
                    wrathion->GetMotionMaster()->MoveFollow(player, 0.0f, 0.0f);
                    std::ostringstream ss;
                    ss << "Greetings " << player->GetName() << " could you assist me for a moment please?";
                    wrathion->MonsterSay(ss.str().c_str(), LANG_UNIVERSAL, wrathion->GetGUID());
                    Event_Timer = urand(MIN_INTERVAL, MAX_INTERVAL);
                } else Event_Timer = 60000;
            }
        } else Event_Timer -= diff;
    }
};

void AddSC_custom_world_event()
{
    new custom_world_event;
}