------------------
-- Palm scanner --
------------------


-----------------------------------------------
-- /!\ When "overriding" a callback function --
-- re-use all the parameters in same order ! --
-----------------------------------------------

local function toggle_palm_scanner(pos)
    local node = minetest.get_node(pos)
    local name = node.name
    if name == "scifi_nodes:palm_scanner_off" then
        minetest.swap_node(pos, {name = "scifi_nodes:palm_scanner_on", param2 = node.param2})
        mesecon.receptor_on(pos, get_switch_rules(node.param2))
        minetest.get_node_timer(pos):start(3)
    elseif name == "scifi_nodes:palm_scanner_on" then
        minetest.swap_node(pos, {name="scifi_nodes:palm_scanner_off", param2=node.param2})
        mesecon.receptor_off(pos, get_switch_rules(node.param2))
    end
end

-- after_place_node
-- placer is a player object
local function set_owner(pos, placer, itemstack, pointed_thing)
    local meta = minetest.get_meta(pos)
    meta:set_string("owner", placer:get_player_name())
end

-- on_rightclick
-- player is a player object
local function check_owner(pos, node, player, itemstack, pointed_thing)
    local meta = minetest.get_meta(pos)
    local owner = meta:get_string("owner")
    local player = player:get_player_name()
    minetest.swap_node(pos, {name = "scifi_nodes:palm_scanner_checking", param2 = node.param2})
    minetest.sound_play("scifi_nodes_palm_scanner", {max_hear_distance = 8, pos = pos, gain = 1.0})
    -- wait a minute please !
    local clock = os.clock
    local t0 = clock()
    while clock() - t0 <= 1.5 do end
    minetest.swap_node(pos, {name = "scifi_nodes:palm_scanner_off", param2 = node.param2})
    if owner == player then
        minetest.sound_play("scifi_nodes_access_granted", {max_hear_distance = 8, pos = pos, gain = 1.0})
        minetest.chat_send_player(player, "Access granted !")
        toggle_palm_scanner(pos)
    else
        minetest.chat_send_player(player, "Access refused !")
        minetest.sound_play("scifi_nodes_access_refused", {max_hear_distance = 8, pos = pos, gain = 1.0})
    end
end

minetest.register_node("scifi_nodes:palm_scanner_on", {
    description = "Palm scanner",
    sunlight_propagates = true,
    buildable_to = false,
    tiles = {"scifi_nodes_palm_scanner_on.png",},
    inventory_image = "scifi_nodes_palm_scanner_on.png",
    wield_image = "scifi_nodes_palm_scanner_on.png",
    drawtype = "signlike",
    node_box = {type = "wallmounted",},
    selection_box = {type = "wallmounted",},
    paramtype = "light",
    paramtype2 = "wallmounted",
    light_source = 5,
    groups = {cracky=1, oddly_breakable_by_hand=1, not_in_creative_inventory=1, mesecon_needs_receiver = 1},
    mesecons = {receptor = {state = mesecon.state.on,}},
    on_timer = toggle_palm_scanner,
    sounds = default.node_sound_glass_defaults(),
})

minetest.register_node("scifi_nodes:palm_scanner_off", {
    description = "Palm scanner",
    tiles = {"scifi_nodes_palm_scanner_off.png",},
    inventory_image = "scifi_nodes_palm_scanner_on.png",
    wield_image = "scifi_nodes_palm_scanner_on.png",
    drawtype = "signlike",
    sunlight_propagates = true,
    buildable_to = false,
    node_box = {type = "wallmounted",},
    selection_box = {type = "wallmounted",},
    paramtype = "light",
    paramtype2 = "wallmounted",
    groups = {cracky=1, oddly_breakable_by_hand=1, mesecon_needs_receiver = 1},
    mesecons = {receptor = {state = mesecon.state.off,}},
    after_place_node = set_owner,
    on_rightclick = check_owner,
    sounds = default.node_sound_glass_defaults(),
})

minetest.register_node("scifi_nodes:palm_scanner_checking", {
    description = "Palm scanner",
    tiles = {{name = "scifi_nodes_palm_scanner_checking.png", animation = {type = "vertical_frames",aspect_w = 16,aspect_h = 16,length = 1.5}}},
    wield_image = "scifi_nodes_palm_scanner_on.png",
    inventory_image = "scifi_nodes_palm_scanner_on.png",
    drawtype = "signlike",
    sunlight_propagates = true,
    buildable_to = false,
    node_box = {type = "wallmounted",},
    selection_box = {type = "wallmounted",},
    paramtype = "light",
    paramtype2 = "wallmounted",
    groups = {cracky=1, oddly_breakable_by_hand=1, not_in_creative_inventory=1, mesecon_needs_receiver = 1},
})