Need help with (Only leader of a group may cast that spell) c++ script

[Pieterkii]

Hi there, i'm looking for a c++ script that will only allow a player to cast a spell (ID = 1515) if the player is the leader of the group. If the player is not in a group they should also be able to cast it.\

Here's a summary of what i want.

If (In_Group->GetGroup())                  //Caster is in a group
 if (Leader->GetLeader() == CasterGUID())   //Caster is the leader of the group
  CastSpell;                                             //Casts spell if player is leader
 else
 MessageCaster("Only the party leader may cast that spell");
else
Castspell;                         //Casts spell if player is not in a group

i tried doing it myself, i couldn't do it, the code is horrible

[Envoke]

You posted on ******* and I answered there also..

//Be sure to include Chat.h at the top of your script.
#include "Chat.h"

if(player->GetGroup())
{

if(player->GetGroup()->IsLeader())
{
   player->CastSpell(player, 0, false);
}
else
{
  ChatHandler(player->GetSession()).PSendSysMessage("You can not cast the spell");
}

}
else
{
  player->CastSpell(player, 0, false);
}

[Pieterkii]

Thanks man!