minetest.register_node("digiline_global_memory:controller", {
	description = "Digiline global memory controller",
	groups = {
    cracky=3
  },

	on_construct = function(pos)
		local meta = minetest.get_meta(pos)
		meta:set_string("formspec","field[channel;Channel;${channel}")
	end,

	tiles = {
		"global_memory_controller_top.png",
		"jeija_microcontroller_bottom.png",
		"jeija_microcontroller_sides.png",
		"jeija_microcontroller_sides.png",
		"jeija_microcontroller_sides.png",
		"jeija_microcontroller_sides.png"
	},

	inventory_image = "global_memory_controller_top.png",
	drawtype = "nodebox",
	selection_box = {
		--From luacontroller
		type = "fixed",
		fixed = { -8/16, -8/16, -8/16, 8/16, -5/16, 8/16 },
	},
	node_box = {
		--From Luacontroller
		type = "fixed",
		fixed = {
			{-8/16, -8/16, -8/16, 8/16, -7/16, 8/16}, -- Bottom slab
			{-5/16, -7/16, -5/16, 5/16, -6/16, 5/16}, -- Circuit board
			{-3/16, -6/16, -3/16, 3/16, -5/16, 3/16}, -- IC
		}
	},

	paramtype = "light",
	sunlight_propagates = true,

	on_receive_fields = function(pos, _, fields, sender)
		local name = sender:get_player_name()
		if minetest.is_protected(pos,name) and not minetest.check_player_privs(name,{protection_bypass=true}) then
			minetest.record_protection_violation(pos,name)
			return
		end
		local meta = minetest.get_meta(pos)
		if fields.channel then
			-- set owner and channel on submit
			meta.set_string("owner", name)
			meta:set_string("channel",fields.channel)
		end
	end,

	digiline = {
		receptor = {},
		effector = {
			action = function(pos, _, channel, msg)
					local meta = minetest.get_meta(pos)
					if meta:get_string("channel") ~= channel then
            return
          end

					local owner = meta:get_string("owner")

					if type(msg) == "table" and msg.command and msg.name then
						if msg.command == "GET" then
							local value = digiline_global_memory.get_value(owner, msg.name)
							digiline:receptor_send(pos, digiline.rules.default, channel, value)
						elseif msg.command == "SET" then
							digiline_global_memory.set_value(owner, msg.name, msg.value)
						end
					end

				end
		}
	}
})