client = mqtt.client("Player", "mqtt.leizour.fr", 8883, true)
client:connect("student", "O99Rq8$F12NXzhL5caya")
-- CLK (clock) : D15 
-- DT  (data)  : D2
-- SW  (Bouton): D4
-- dir = direction de tournage de l'encodeur
-- counter = nombre de crans tournés
-- button = bouton poussoir

playing = false
mot = ""
last_clicked = 0
function action(dir, counter, button)
    cls()
    lettre = string.char((counter % 26)+65)
    if button==1 then
        if playing then
            client:publish("pendu/lettre", lettre, mqtt.QOS0)
        else
            if os.time() - last_clicked > 1 then
                mot = mot..lettre
                last_clicked = os.time()
            else 
                client:publish("pendu/mot", mot, mqtt.QOS0)
                mot = ""
            end
        end
    end
    console("Choix lettre : "..lettre)
    if not playing then
        console("Mot : "..mot)
    end
end

function handle_message(len, message, topic_len, topic_name)
    if topic_name == "pendu/gamestate" then
        if message == "PLAYING" then
            playing = true
        elseif message == "WAITING" then
            playing = false
            mot = ""
        end
    end
end

client:subscribe("pendu/gamestate", mqtt.QOS0, handle_message)
enc = encoder.attach(pio.GPIO15, pio.GPIO2, pio.GPIO4, action)