GTA5 "player" is typing notification (LUA)

local stuff = {}
stuff.ChatSpyTable = {}

stuff.scriptHookFunction = function(source, target, params, count, stuff)
    if params[1] == 747270864 then
        if not stuff.ChatSpyTable.pidTable[source] then
            stuff.ChatSpyTable.total = stuff.ChatSpyTable.total + 1
            stuff.ChatSpyTable.pidTable[source] = {currentPos = stuff.ChatSpyTable.total, string = " is typing...", alpha = 255}
            stuff.ChatSpyTable.pidTable[source].id = menu.create_thread(function()
                stuff.typingThreadCallback(stuff, source)
            end, nil)
        end
    elseif params[1] == 3304008971 then
        if stuff.ChatSpyTable.pidTable[source] then
            stuff.ChatSpyTable.threads[#stuff.ChatSpyTable.threads + 1] = menu.create_thread(function()
                stuff.deleteThreadCallback(stuff, source)
            end, nil)
        end
    end
end

stuff.typingThreadCallback = function(stuff, source)
    while true do
        if player.get_player_name(source) and stuff.ChatSpyTable.pidTable[source].string then
            ui.set_text_scale(0.4)
            ui.set_text_color(255, 255, 255, stuff.ChatSpyTable.pidTable[source].alpha)
            ui.set_text_font(0)
            ui.set_text_outline(true)
            ui.set_text_right_justify(false)
            ui.set_text_justification(1)
            ui.draw_text(player.get_player_name(source)..stuff.ChatSpyTable.pidTable[source].string, v2(0.01, 0.2 + (stuff.ChatSpyTable.pidTable[source].currentPos * 0.03)))
        end
        system.wait(0)
    end
end

stuff.deleteThreadCallback = function(stuff, source)
    stuff.ChatSpyTable.pidTable[source].string = " closed chat box."
    while stuff.ChatSpyTable.pidTable[source].alpha > 0 do
        stuff.ChatSpyTable.pidTable[source].alpha = stuff.ChatSpyTable.pidTable[source].alpha - 5
        system.wait(10)
    end
    stuff.ChatSpyTable.total = stuff.ChatSpyTable.total - 1
    for k, v in pairs(stuff.ChatSpyTable.pidTable) do
        if type(v) == "table" then
            if v.currentPos > stuff.ChatSpyTable.pidTable[source].currentPos then
                v.currentPos = v.currentPos - 1
            end
        end
    end
    menu.delete_thread(stuff.ChatSpyTable.pidTable[source].id)
    stuff.ChatSpyTable.pidTable[source] = nil
end

menu.add_feature("Typing Indicator", "toggle", 0, function(f)
    if f.on then
        stuff.ChatSpyTable = {pidTable = {}, threads = {}}
        stuff.ChatSpyTable.total = -1
        stuff.ChatSpyTable.hook = hook.register_script_event_hook(function(source, target, params, count)
            stuff.scriptHookFunction(source, target, params, count, stuff)
        end)
    else
        for _, thread in pairs(stuff.ChatSpyTable.threads) do
            menu.delete_thread(thread)
        end
        for _, pidTable in pairs(stuff.ChatSpyTable.pidTable) do
            menu.delete_thread(pidTable.id)
        end
        hook.remove_script_event_hook(stuff.ChatSpyTable.hook)
        stuff.ChatSpyTable = {}
    end
end)

event.add_event_listener("exit", function()
    if stuff.ChatSpyTable.threads then
        for _, thread in pairs(stuff.ChatSpyTable.threads) do
            menu.delete_thread(thread)
        end
    end
    if stuff.ChatSpyTable.pidTable then
        for _, pidTable in pairs(stuff.ChatSpyTable.pidTable) do
            menu.delete_thread(pidTable.id)
        end
    end
    if stuff.ChatSpyTable.hook then
        hook.remove_script_event_hook(stuff.ChatSpyTable.hook)
    end
end)