local T = {Que = {}}
local Running = false

function T.Exists(pPlayer)
    if(pPlayer and type(pPlayer) == "userdata" and pPlayer:GetName()) then
        return true
    end
    return false
end

function T.Hello(pUnit, event, pPlayer)
    pUnit:GossipCreateMenu(100, pPlayer, 0)
    pUnit:GossipMenuAddItem(0, "Queuers: "..(#T), 0, 0, '', 0)
    if(not T.Que[tostring(pPlayer)]) then
        pUnit:GossipMenuAddItem(0, "Join the queue", 1, 0, '', 0) -- Joining fee 10gold
    else
        pUnit:GossipMenuAddItem(0, "Leave the queue", 2, 0, 'Leave the queue? Bet will be refunded.', 0)
    end
    pUnit:GossipSendMenu(pPlayer)
end

function T.Teleport()
    if(#T < 2) then
        return
    end
    if(not T.Exists(T[1])) then
        table.remove(T, 1)
        T.Teleport()
        return
    end
    if(not T.Exists(T[2])) then
        table.remove(T, 2)
        T.Teleport()
        return
    end
    local x,y,z,o = T[1]:GetLocation()
    local map = T[1]:GetMapId()
    T.Loc1 = {map,x,y,z,o}
    local x,y,z,o = T[2]:GetLocation()
    local map = T[2]:GetMapId()
    T.Loc2 = {map,x,y,z,o}

    -- Fill in the coordinates!
    T[1]:Teleport(map, x, y, z, o) -- Teleport player 1
    T[2]:Teleport(map, x, y, z, o) -- teleport player 2

    -- Timer to automatically end the duel/arena/bg after 10 min (10 min = 600 sec = 600000 ms)
    T.Event = CreateLuaEvent(function() T.End(tostring(T[1]), tostring(T[2])) end, 600000, 1)

    Running = true
end

function T.Select(pUnit, event, pPlayer, id, intid, code)
    if(intid == 0) then
        T.Hello(pUnit, event, pPlayer)
        return
    elseif(intid == 1) then
        table.insert(T, pPlayer)
        T.Que[tostring(pPlayer)] = true
        pPlayer:SendAreaTriggerMessage("You have been added to the queue")
        if(not Running and #T >= 2) then
            T.Teleport()
        end
    elseif(intid == 2) then
        local tstr = tostring(pPlayer)
        for k,v in ipairs(T) do
            if(tostring(v) == tstr) then
                table.remove(T, k)
                T.Que[tostring(pPlayer)] = nil
                break
            end
        end
        pPlayer:SendAreaTriggerMessage("You have been removed from the queue")
    end
    pPlayer:GossipComplete()
end

function T.Kill(event, pKiller, pVictim)
    local strK, strV = tostring(pKiller), tostring(pVictim)
    if(not Running or strK == strV) then
        return
    end
    local str1, str2 = tostring(T[1]), tostring(T[2])
    if((str1 == strK or str1 == strV) and (str2 == strK or str2 == strV)) then
        -- Rewards and such go here:
            pKiller:AddItem(121001, 1)

        --
        DestroyLuaEvent(T.Event)
        pVictim:ResurrectPlayer()
        T.End(strK, strV)
    end
end

function T.End(str1, str2)
    T[1]:Teleport(T.Loc1[1], T.Loc1[2], T.Loc1[3], T.Loc1[4], T.Loc1[5]) -- Teleport player 1 back
    T[2]:Teleport(T.Loc2[1], T.Loc2[2], T.Loc2[3], T.Loc2[4], T.Loc2[5]) -- Teleport player 2 back
    table.remove(T, 1)
    table.remove(T, 1)
    T.Que[str1] = nil
    T.Que[str2] = nil
    Running = false
    T.Teleport()
end

local Entry = 12345
RegisterUnitGossipEvent(89102, 1, T.Hello)
RegisterUnitGossipEvent(89102, 2, T.Select)
RegisterServerHook(2, T.Kill)