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settings.load()

local contact_side = settings.get("elevator.contactSide")
local door_side = settings.get("elevator.doorSide")
local sensor_side = settings.get("elevator.sensorSide")

local is_person_waiting = false

while true do
    os.pullEvent("redstone")
    print("########")

    local sensor_input = redstone.getInput(sensor_side)
    if sensor_input and sensor_input ~= is_person_waiting then
        is_person_waiting = true
        print("person is waiting - calling elevator")
        redstone.setOutput(contact_side, true)
        sleep(0.2)
        redstone.setOutput(contact_side, false)
        sleep(0.4)
    elseif not sensor_input then
        is_person_waiting = false
    end

    local contact_input = redstone.getInput(contact_side)
    if contact_input then
        print("elevator is here - opening doors")
        redstone.setOutput(door_side, true)
    else
        print("elevator is not here - closing doors")
        redstone.setOutput(door_side, false)
    end
end