Max professions NPC, my version

#include "ScriptPCH.h"

enum Settings
{
    NPC_TEXT            = 44444,// this is the number for text to be displayed on npc, number is controlled via db in npc_text
    GOSSIP_ICON         = 6,    // the icon that pops up by the (Max my blah blah blah)
    DONOR_TOKEN         = 67890,// vote token id in item_template default: 67890, but should be edited to your custom id
    DONOR_TOKEN_COUNT   = 5,    // MOD how much you want maxing a skill to cost.
    MAX_SKILL_LEVEL     = 225   // Max for professions. the numbers go: 75, 150, 225, 300, 375, 450.
};

class Pro_Max : public CreatureScript
{
public:
    Pro_Max() : CreatureScript("Pro_Max")
    {
        std::stringstream ss;
        ss << DONOR_TOKEN_COUNT;
        DONOR_TOKEN_COUNT_STR = ss.str();
    }
    std::string DONOR_TOKEN_COUNT_STR;

    bool OnGossipHello(Player* player, Creature* creature)
    {
        player->ADD_GOSSIP_ITEM(GOSSIP_ICON, "Max my Engineering("+DONOR_TOKEN_COUNT_STR+" Donor Tokens)", GOSSIP_SENDER_MAIN, SKILL_ENGINEERING);
        player->ADD_GOSSIP_ITEM(GOSSIP_ICON, "Max my Blacksmithing("+DONOR_TOKEN_COUNT_STR+" Donor Tokens)", GOSSIP_SENDER_MAIN, SKILL_BLACKSMITHING);
        player->ADD_GOSSIP_ITEM(GOSSIP_ICON, "Max my Alchemy("+DONOR_TOKEN_COUNT_STR+" Donor Tokens)", GOSSIP_SENDER_MAIN, SKILL_ALCHEMY);
        player->ADD_GOSSIP_ITEM(GOSSIP_ICON, "Max my Leatherworking("+DONOR_TOKEN_COUNT_STR+" Donor Tokens)", GOSSIP_SENDER_MAIN, SKILL_LEATHERWORKING);
        player->ADD_GOSSIP_ITEM(GOSSIP_ICON, "Max my Tailoring("+DONOR_TOKEN_COUNT_STR+" Donor Tokens)", GOSSIP_SENDER_MAIN, SKILL_TAILORING);
        player->ADD_GOSSIP_ITEM(GOSSIP_ICON, "Max my Skinning("+DONOR_TOKEN_COUNT_STR+" Donor Tokens)", GOSSIP_SENDER_MAIN, SKILL_SKINNING);
        player->ADD_GOSSIP_ITEM(GOSSIP_ICON, "Max my Mining("+DONOR_TOKEN_COUNT_STR+" Donor Tokens)", GOSSIP_SENDER_MAIN, SKILL_MINING);
        player->ADD_GOSSIP_ITEM(GOSSIP_ICON, "Max my Jewelcrafting("+DONOR_TOKEN_COUNT_STR+" Donor Tokens)", GOSSIP_SENDER_MAIN, SKILL_JEWELCRAFTING);
        player->ADD_GOSSIP_ITEM(GOSSIP_ICON, "Max my Inscriptions("+DONOR_TOKEN_COUNT_STR+" Donor Tokens)", GOSSIP_SENDER_MAIN, SKILL_INSCRIPTION);
        player->ADD_GOSSIP_ITEM(GOSSIP_ICON, "Max my Herbalism("+DONOR_TOKEN_COUNT_STR+" Donor Tokens)", GOSSIP_SENDER_MAIN, SKILL_HERBALISM);
        player->ADD_GOSSIP_ITEM(GOSSIP_ICON, "Max my Cooking("+DONOR_TOKEN_COUNT_STR+" Donor Tokens)", GOSSIP_SENDER_MAIN, SKILL_COOKING);
        player->ADD_GOSSIP_ITEM(GOSSIP_ICON, "Max my First Aid("+DONOR_TOKEN_COUNT_STR+" Donor Tokens)", GOSSIP_SENDER_MAIN, SKILL_FIRST_AID);
        player->ADD_GOSSIP_ITEM(GOSSIP_ICON, "Max my Fishing("+DONOR_TOKEN_COUNT_STR+" Donor Tokens)", GOSSIP_SENDER_MAIN, SKILL_FISHING);
        player->SEND_GOSSIP_MENU(NPC_TEXT, creature->GetGUID());
        return true;
    }

    bool OnGossipSelect(Player* player, Creature* creature, uint32 sender, uint32 action)
    {
        player->PlayerTalkClass->ClearMenus();

        if (!player->HasSkill(action))
            player->GetSession()->SendNotification("You already know this profession");
        else if (player->GetSkillValue(action) == MAX_SKILL_LEVEL)
            player->GetSession()->SendNotification("This profession is already maxed out");
        else if (!player->HasItemCount(DONOR_TOKEN, DONOR_TOKEN_COUNT, false))

            player->GetSession()->SendNotification(("You need "+DONOR_TOKEN_COUNT_STR+" donor tokens").c_str());
        else
        {
            player->DestroyItemCount(DONOR_TOKEN, DONOR_TOKEN_COUNT, true);
            player->SetSkill(action, 0, MAX_SKILL_LEVEL, MAX_SKILL_LEVEL);
        }
        OnGossipHello(player, creature);
        return true;
    }
};

void AddSC_Pro_Max()
{
    new Pro_Max();
}