local S = minetest.get_translator("rp_default")

local SIGN_MAX_TEXT_LENGTH = 64

local on_construct = function(pos)
	local meta = minetest.get_meta(pos)
	meta:set_string("formspec", rp_formspec.get_page("rp_default:field"))
	-- Show empty sign text in quotation marks
	meta:set_string("infotext", S('""'))
	meta:set_string("text", "")
end
local on_receive_fields = function(pos, formname, fields, sender)
	if fields.text == nil then return end
	if minetest.is_protected(pos, sender:get_player_name()) and
			not minetest.check_player_privs(sender, "protection_bypass") then
		minetest.record_protection_violation(pos, sender:get_player_name())
		return itemstack
	end
	local meta = minetest.get_meta(pos)
	local text = fields.text
	if string.len(text) > SIGN_MAX_TEXT_LENGTH then
		text = string.sub(text, 1, SIGN_MAX_TEXT_LENGTH)
	end
	minetest.log("action", (sender:get_player_name() or "")..
					" wrote \""..text.."\" to sign at "..
					minetest.pos_to_string(pos))
	meta:set_string("text", text)
	-- Show sign text in quotation marks
	meta:set_string("infotext", S('"@1"', text))

	default.write_name(pos, meta:get_string("text"))
end
local on_destruct = function(pos)
	default.write_name(pos, "")
end

local function register_sign(id, def)
	minetest.register_node("rp_default:"..id, {
		description = def.description,
		_tt_help = S("Write a short message"),
		drawtype = "nodebox",
		tiles = {def.tile},
		inventory_image = def.inv_image,
		wield_image = def.inv_image,
		paramtype = "light",
		paramtype2 = "wallmounted",
		sunlight_propagates = true,
		walkable = false,
		node_box = {
			type = "wallmounted",
			wall_top = {-0.5+(1/16), 0.5, -0.5+(4/16), 0.5-(1/16), 0.5-(1/16), 0.5-(4/16)},
			wall_bottom = {-0.5+(1/16), -0.5, -0.5+(4/16), 0.5-(1/16), -0.5+(1/16), 0.5-(4/16)},
			wall_side = {-0.5, -0.5+(4/16), -0.5+(1/16), -0.5+(1/16), 0.5-(4/16), 0.5-(1/16)},
		},
		groups = {choppy = 2,handy = 2,attached_node = 1, sign=1},
		is_ground_content = false,
		sounds = def.sounds,
		on_construct = on_construct,
		on_receive_fields = on_receive_fields,
		on_destruct = on_destruct,
		on_place = function(itemstack, placer, pointed_thing)
			if not placer or not placer:is_player() then
				return itemstack
			end
			if pointed_thing.type ~= "node" then
				return minetest.item_place_node(itemstack, placer, pointed_thing)
			end
			if pointed_thing.under.y == pointed_thing.above.y then
				return minetest.item_place_node(itemstack, placer, pointed_thing)
			end

			local r90 = false
				local yaw = placer:get_look_horizontal()
			if not ((yaw > (1/4)*math.pi and yaw < (3/4)*math.pi) or (yaw > (5/4)*math.pi and yaw < (7/4)*math.pi)) then
				return minetest.item_place_node(itemstack, placer, pointed_thing)
			end
			local r90sign = ItemStack("rp_default:"..id.."_r90")
			r90sign = minetest.item_place_node(r90sign, placer, pointed_thing)
			if r90sign:is_empty() then
				itemstack:take_item()
			end
			return itemstack
		end,
	})

	minetest.register_node("rp_default:"..id.."_r90", {
		drawtype = "nodebox",
		tiles = {"("..def.tile..")^[transformR90"},
		inventory_image = "("..def.inv_image..")^[transformR90",
		wield_image = "("..def.inv_image..")^[transformR90",
		paramtype = "light",
		paramtype2 = "wallmounted",
		sunlight_propagates = true,
		walkable = false,
		node_box = {
			type = "wallmounted",
			wall_top = {-0.5+(4/16), 0.5, -0.5+(1/16), 0.5-(4/16), 0.5-(1/16), 0.5-(1/16)},
			wall_bottom = {-0.5+(4/16), -0.5, -0.5+(1/16), 0.5-(4/16), -0.5+(1/16), 0.5-(1/16)},
			wall_side = {-0.5, -0.5+(1/16), -0.5+(4/16), -0.5+(1/16), 0.5-(1/16), 0.5-(4/16)},
		},
		groups = {choppy = 2,handy = 2,attached_node = 1, sign=2, not_in_creative_inventory=1},
		is_ground_content = false,
		sounds = def.sounds,
		on_construct = on_construct,
		on_receive_fields = on_receive_fields,
		on_destruct = on_destruct,
		drop = "rp_default:"..id,
	})
end

register_sign("sign", {
	description = S("Sign"),
	tile = "default_sign.png",
	inv_image = "default_sign_inventory.png",
	sounds = rp_sounds.node_sound_defaults(),
})

default.log("sign", "loaded")