local r_max = redstone.max_state

minetest.register_node("redstone:detector_off", {
    description = "Detector",
    tiles = {"redstone_piston.png^[invert:rgb^[colorize:yellow:100",
    "redstone_piston.png^[transformR180^[invert:rgb^[colorize:yellow:100",
    "redstone_piston.png^[transformR270^[invert:rgb^[colorize:yellow:100",
    "redstone_piston.png^[transformR90^[invert:rgb^[colorize:yellow:100",
    "wood.png^[invert:rgb^[colorize:yellow:100",
    "stone.png^[invert:rgb^[colorize:yellow:100"},
    paramtype2 = "facedir",
    groups = {stone = 1, hard = 1, pickaxe = 1, hand = 4,pathable = 1},
    sounds = main.stoneSound(),
    drop = "redstone:detector_off",
    paramtype = "light",
    sunlight_propagates = true,
    
    on_timer = function(pos, elapsed)
        local param2 = minetest.get_node(pos).param2
        local dir = minetest.facedir_to_dir(param2)


        if minetest.get_node(vector.add(pos,dir)).name ~= "air" then
            minetest.swap_node(pos, {name="redstone:detector_on",param2=param2})
            
            redstone.inject(pos,{
                name = "redstone:detector_on",
                torch = r_max,
            })
            minetest.after(0,function()
            	redstone.update(pos)
            end)
        end

        local timer = minetest.get_node_timer(pos)
        if not timer:is_started() then
            timer:start(1)
        end
    end,
    
	--reverse the direction to face the player
	on_construct = function(pos)
		redstone.inject(pos,{
			name = "redstone:detector_off",
        })
        local timer = minetest.get_node_timer(pos)
		if not timer:is_started() then
			timer:start(1)
		end
	end,
	on_rightclick = function(pos, node, clicker, itemstack, pointed_thing)
		local look = clicker:get_look_dir()
		look = vector.multiply(look,-1)
		local dir = minetest.dir_to_facedir(look, true)
		minetest.swap_node(pos,{name="redstone:detector_off",param2=dir})
	end,
    after_place_node = function(pos, placer, itemstack, pointed_thing)
		local look = placer:get_look_dir()
		look = vector.multiply(look,-1)
		local dir = minetest.dir_to_facedir(look, true)
		minetest.swap_node(pos,{name="redstone:detector_off",param2=dir})
	end,
	on_destruct = function(pos, oldnode)
		redstone.inject(pos,nil)
    end,
})


minetest.register_lbm({
	name = "redstone:detector_off",
	nodenames = {"redstone:detector_off"},
	run_at_every_load = true,
	action = function(pos)
		redstone.inject(pos,{
			name = "redstone:detector_off",
        })

        local timer = minetest.get_node_timer(pos)
		if not timer:is_started() then
			timer:start(1)
		end
	end,
})


minetest.register_node("redstone:detector_on", {
    description = "Detector On",
    tiles = {"redstone_piston.png^[invert:rgb^[colorize:green:100",
    "redstone_piston.png^[transformR180^[invert:rgb^[colorize:green:100",
    "redstone_piston.png^[transformR270^[invert:rgb^[colorize:green:100",
    "redstone_piston.png^[transformR90^[invert:rgb^[colorize:green:100",
    "wood.png^[invert:rgb^[colorize:green:100",
    "stone.png^[invert:rgb^[colorize:green:100"},
    paramtype2 = "facedir",
    groups = {stone = 1, hard = 1, pickaxe = 1, hand = 4,pathable = 1},
    sounds = main.stoneSound(),
    drop = "redstone:breaker_off",
    paramtype = "light",
    sunlight_propagates = true,
    on_timer = function(pos, elapsed)
        local param2 = minetest.get_node(pos).param2
        local dir = minetest.facedir_to_dir(param2)
        if minetest.get_node(vector.add(pos,dir)).name == "air" then
            minetest.swap_node(pos, {name="redstone:detector_off",param2=param2})
            
            redstone.inject(pos,{
                name = "redstone:detector_off",
            })
            minetest.after(0,function()
            	redstone.update(pos)
            end)
        end

        local timer = minetest.get_node_timer(pos)
        if not timer:is_started() then
            timer:start(1)
        end
    end,
	--reverse the direction to face the player
	on_construct = function(pos)
		redstone.inject(pos,{
            name = "redstone:detector_on",
            torch = r_max,
        })
        local timer = minetest.get_node_timer(pos)
		if not timer:is_started() then
			timer:start(1)
		end
		redstone.update(pos)
	end,
	on_destruct = function(pos)
		redstone.inject(pos,nil)
    end,
})



minetest.register_lbm({
	name = "redstone:detector_on",
	nodenames = {"redstone:detector_on"},
	run_at_every_load = true,
	action = function(pos)
		redstone.inject(pos,{
			name = "redstone:detector_on",
			torch = r_max,
        })
        
        local timer = minetest.get_node_timer(pos)
		if not timer:is_started() then
			timer:start(1)
		end

		minetest.after(0,function()
            redstone.update(pos)
        end)
	end,
})