minetest.register_craft({
    output = 'travail:nightlight 1',
    recipe = {
        {'default:glass', 'default:mese','default:glass'},
        {'default:mese', 'default:glass', 'default:mese'},
        {'default:glass', 'default:mese','default:glass'},
    }
})

local function switch_night_sensor(a_position, a_player_name)
    local temp_timer = core.get_node_timer(a_position)
    local temp_message
    if temp_timer:get_timeout()==0 then
        temp_timer:start(20)
        temp_message = "on"
    else
        temp_timer:stop()
        temp_message = "off"
    end
    core.chat_send_player(a_player_name, "-- You switch "..temp_message.." the night sensor.")
end

minetest.register_node("travail:nightlight", {
    description = "Night Light",
    drawtype = "glasslike",
    tiles = {"travail_nightlight.png"},
    paramtype = "light",
    sunlight_propagates = true,
    is_ground_content = false,
    groups = {cracky = 3, oddly_breakable_by_hand = 3},
    sounds = default.node_sound_glass_defaults(),
    on_construct = function(a_position)
        core.get_node_timer(a_position):start(20)
    end,
    on_rightclick = function(a_position, a_node, a_clicker, a_itemstack, a_pointed_thing)
        local temp_player_name = a_clicker:get_player_name()
        if not core.is_protected(a_position, temp_player_name) then
            core.swap_node(a_position, {name = "travail:nightlight_on", param2 = a_node.param2})
            switch_night_sensor(a_position, temp_player_name)
        end
    end,
    on_timer = function(a_position, a_elapsed)
        local temp_time = core.get_timeofday()
        if temp_time<0.24 or temp_time>0.76 then
            local temp_node = core.get_node(a_position)
            core.swap_node(a_position, {name = "travail:nightlight_on", param2 = temp_node.param2})
        end
        return true
    end,
})

minetest.register_node("travail:nightlight_on", {
    description = "Night Light On",
    drawtype = "glasslike",
    tiles = {"travail_nightlight_on.png"},
    paramtype = "light",
    light_source = 14,
    sunlight_propagates = true,
    is_ground_content = false,
    groups = {cracky = 3, oddly_breakable_by_hand = 3, not_in_creative_inventory = 1},
    sounds = default.node_sound_glass_defaults(),
    drop = "travail:nightlight",
    on_rightclick = function(a_position, a_node, a_clicker, a_itemstack, a_pointed_thing)
        local temp_player_name = a_clicker:get_player_name()
        if not core.is_protected(a_position, temp_player_name) then
            core.swap_node(a_position, {name = "travail:nightlight", param2 = a_node.param2})
            switch_night_sensor(a_position, temp_player_name)
        end
    end,
    on_timer = function(a_position, a_elapsed)
        local temp_time = core.get_timeofday()
        if temp_time>=0.24 and temp_time<=0.76 then
            local temp_node = core.get_node(a_position)
            core.swap_node(a_position, {name = "travail:nightlight", param2 = temp_node.param2})
        end
        return true
    end,
})