local keywordHandler = KeywordHandler:new()
local npcHandler = NpcHandler:new(keywordHandler)
NpcSystem.parseParameters(npcHandler)
local talkState = {}

function onCreatureAppear(cid)       npcHandler:onCreatureAppear(cid)       end
function onCreatureDisappear(cid)     npcHandler:onCreatureDisappear(cid)       end
function onCreatureSay(cid, type, msg)     npcHandler:onCreatureSay(cid, type, msg)     end
function onThink()         npcHandler:onThink()           end

local storage = 5002

function creatureSayCallback(cid, type, msg)
     if not npcHandler:isFocused(cid) then
         return false
     end
     local talkUser = NPCHANDLER_CONVBEHAVIOR == CONVERSATION_DEFAULT and 0 or cid

     if msgcontains(msg, "mission") then
         if getPlayerStorageValue(cid, storage) == -1 then
             selfSay("I have a mission for you to kill 5 dragons and 3 dragon lords, do you accept?", cid)
             talkState[talkUser] = 1
         elseif getPlayerStorageValue(cid, storage) == 1 then
             selfSay("Did you kill 5 dragons and 3 dragon lords?", cid)
             talkState[talkUser] = 1
         else
             selfSay("You already did the mission.", cid)
         end
     elseif msgcontains(msg, "yes") and talkState[talkUser] == 1 then
         if getPlayerStorageValue(cid, storage) == -1 then
             selfSay("Good, come back when you killed them.", cid)
             setPlayerStorageValue(cid, storage, 1)
         else
             if getPlayerStorageValue(cid, 19000) == 5 and getPlayerStorageValue(cid, 19001) == 3 then
                 selfSay("Good job, here is your reward.", cid)
                 doPlayerAddItem(cid, 2160, 5)
                 doPlayerAddExp(cid, 50000)
                 setPlayerStorageValue(cid, storage, 2)
             else
                 selfSay("You didn't kill them all.", cid)
             end
         end
         talkState[talkUser] = 0
     elseif msgcontains(msg, "no") and talkState[talkUser] == 1 then
         selfSay("Ok then.", cid)
         talkState[talkUser] = 0
     end
     return true
end

npcHandler:setCallback(CALLBACK_MESSAGE_DEFAULT, creatureSayCallback)
npcHandler:addModule(FocusModule:new())