local S = minetest.get_translator(minetest.get_current_modname())

-- Spawn a stand entity
local function spawn_stand_entity(pos, node)
	local luaentity = minetest.add_entity(pos, "mcl_armor_stand:armor_entity"):get_luaentity()
	luaentity:update_rotation(node or minetest.get_node(pos))
	return luaentity
end

-- Find a stand entity or spawn one
local function get_stand_entity(pos, node)
	for _, obj in ipairs(minetest.get_objects_inside_radius(pos, 0)) do
		local luaentity = obj:get_luaentity()
		if luaentity and luaentity.name == "mcl_armor_stand:armor_entity" then
			return luaentity
		end
	end
	return spawn_stand_entity(pos, node)
end

-- Migrate the old inventory format
local function migrate_inventory(inv)
	inv:set_size("armor", 5)
	local lists = inv:get_lists()
	for name, element in pairs(mcl_armor.elements) do
		local listname = "armor_" .. name
		local list = lists[listname]
		if list then
			inv:set_stack("armor", element.index, list[1])
			inv:set_size(listname, 0)
		end
	end
end

-- Drop all armor on the ground when it got destroyed
local function drop_inventory(pos)
	local inv = minetest.get_meta(pos):get_inventory()
	for _, stack in pairs(inv:get_list("armor")) do
		if not stack:is_empty() then
			local p = {x=pos.x+math.random(0, 10)/10-0.5, y=pos.y, z=pos.z+math.random(0, 10)/10-0.5}
			minetest.add_item(p, stack)
		end
	end
end

-- TODO: The armor stand should be an entity
minetest.register_node("mcl_armor_stand:armor_stand", {
	description = S("Armor Stand"),
	drawtype = "mesh",
	mesh = "3d_armor_stand.obj",
	inventory_image = "mcl_armor_stand_item.png",
	wield_image = "mcl_armor_stand_item.png",
	tiles = {"default_wood.png", "mcl_stairs_stone_slab_top.png"},
	paramtype = "light",
	paramtype2 = "facedir",
	walkable = false,
	is_ground_content = false,
	stack_max = 16,
	selection_box = {
		type = "fixed",
		fixed = {-0.5,-0.5,-0.5, 0.5,1.4,0.5}
	},
	-- TODO: This should be breakable by 2 quick punches
	groups = {handy=1, deco_block=1, dig_by_piston=1, attached_node=1},
	_mcl_hardness = 2,
	sounds = mcl_sounds.node_sound_wood_defaults(),
	on_construct = function(pos)
		spawn_stand_entity(pos)
	end,
	on_destruct = function(pos)
		drop_inventory(pos)
	end,
	on_rightclick = function(pos, node, clicker, itemstack, pointed_thing)
		local protname = clicker:get_player_name()

		if minetest.is_protected(pos, protname) then
			minetest.record_protection_violation(pos, protname)
			return itemstack
		end

		return mcl_armor.equip(itemstack, get_stand_entity(pos, node).object, true)
	end,
	on_rotate = function(pos, node, user, mode)
		if mode == screwdriver.ROTATE_FACE then
			node.param2 = (node.param2 + 1) % 4
			minetest.swap_node(pos, node)
			get_stand_entity(pos, node):update_rotation(node)
			return true
		end
		return false
	end,
})

minetest.register_entity("mcl_armor_stand:armor_entity", {
	initial_properties = {
		physical = true,
		visual = "mesh",
		mesh = "3d_armor_entity.obj",
		visual_size = {x=1, y=1},
		collisionbox = {-0.1,-0.4,-0.1, 0.1,1.3,0.1},
		pointable = false,
		textures = {"blank.png"},
		timer = 0,
		static_save = false,
	},
	on_activate = function(self)
		self.object:set_armor_groups({immortal = 1})
		self.node_pos = vector.round(self.object:get_pos())
		self.inventory = minetest.get_meta(self.node_pos):get_inventory()
		migrate_inventory(self.inventory)
		mcl_armor.update(self.object)
	end,
	on_step = function(self, dtime)
		if minetest.get_node(self.node_pos).name ~= "mcl_armor_stand:armor_stand" then
			self.object:remove()
		end
	end,
	update_armor = function(self, info)
		self.object:set_properties({textures = {info.texture}})
	end,
	update_rotation = function(self, node)
		self.object:set_yaw(minetest.dir_to_yaw(minetest.facedir_to_dir(node.param2)))
	end,
})

minetest.register_lbm({
	label = "Respawn armor stand entities",
	name = "mcl_armor_stand:respawn_entities",
	nodenames = {"mcl_armor_stand:armor_stand"},
	run_at_every_load = true,
	action = function(pos, node)
		spawn_stand_entity(pos, node)
	end,
})

minetest.register_craft({
	output = "mcl_armor_stand:armor_stand",
	recipe = {
		{"mcl_core:stick", "mcl_core:stick", "mcl_core:stick"},
		{"", "mcl_core:stick", ""},
		{"mcl_core:stick", "mcl_stairs:slab_stone", "mcl_core:stick"},
	}
})

-- Legacy handling
minetest.register_alias("3d_armor_stand:armor_stand", "mcl_armor_stand:armor_stand")
minetest.register_entity(":3d_armor_stand:armor_entity", {
	on_activate = function(self)
		minetest.log("action", "[mcl_armor_stand] Removing legacy entity: 3d_armor_stand:armor_entity")
		self.object:remove()
	end,
	static_save = false,
})