technic.chests.groups = {
	snappy = 2,
	choppy = 2,
	oddly_breakable_by_hand = 2,
	tubedevice = 1,
	tubedevice_receiver = 1
}
technic.chests.groups_noinv = {
	snappy = 2,
	choppy = 2,
	oddly_breakable_by_hand = 2,
	tubedevice = 1,
	tubedevice_receiver = 1,
	not_in_creative_inventory = 1
}

technic.chests.tube = {
	insert_object = function(pos, node, stack, direction)
		local meta = minetest.get_meta(pos)
		local inv = meta:get_inventory()
		return inv:add_item("main", stack)
	end,
	can_insert = function(pos, node, stack, direction)
		local meta = minetest.get_meta(pos)
		local inv = meta:get_inventory()
		return inv:room_for_item("main", stack)
	end,
	input_inventory = "main",
	connect_sides = { left = 1, right = 1, front = 1, back = 1, top = 1, bottom = 1 },
}

technic.chests.can_dig = function(pos, player)
	local meta = minetest.get_meta(pos)
	local inv = meta:get_inventory()
	return inv:is_empty("main")
end

local function inv_change(pos, count, player)
	if not default.can_interact_with_node(player, pos) then
		return 0
	end
	return count
end

function technic.chests.inv_move(pos, from_list, from_index, to_list, to_index, count, player)
	return inv_change(pos, count, player)
end

function technic.chests.inv_put(pos, listname, index, stack, player)
	return inv_change(pos, stack:get_count(), player)
end

function technic.chests.inv_take(pos, listname, index, stack, player)
	return inv_change(pos, stack:get_count(), player)
end

function technic.chests.on_inv_move(pos, from_list, from_index, to_list, to_index, count, player)
	minetest.log("action", player:get_player_name()..
			" moves stuff in chest at "
			.. minetest.pos_to_string(pos))
end

function technic.chests.on_inv_put(pos, listname, index, stack, player)
	minetest.log("action", player:get_player_name()..
			" moves "..stack:get_name()..
			" to chest at "..minetest.pos_to_string(pos))
end

function technic.chests.on_inv_take(pos, listname, index, stack, player)
	minetest.log("action", player:get_player_name()..
			" takes "..stack:get_name()..
			" from chest at "..minetest.pos_to_string(pos))
end