-- Buildat: extension/replicate/init.lua
-- http://www.apache.org/licenses/LICENSE-2.0
-- Copyright 2014 Perttu Ahola <celeron55@gmail.com>
local log = buildat.Logger("extension/replicate")
local magic = require("buildat/extension/urho3d").safe
local dump = buildat.dump
local M = {safe = {}}

-- __buildat_replicated_scene is set by client/replication.lua
M.unsafe_main_scene = __buildat_replicated_scene
M.safe.main_scene = getmetatable(magic.Scene).wrap(__buildat_replicated_scene)

local sync_node_added_subs = {}

-- Callback will be called for each node added to the scene, once they have a
-- name. Callback is called immediately for all existing nodes.
function M.safe.sub_sync_node_added(opts, cb)
	-- Add to subscriber table
	table.insert(sync_node_added_subs, cb)
	-- Handle existing nodes
	local function handle_node(node)
		local name = node:GetName()
		--log:debug("sub_sync_node_added(): node "..node:GetID()..", name="..name)
		cb(node)
		for i = 0, node:GetNumChildren()-1 do
			handle_node(node:GetChild(i))
		end
	end
	-- Handle existing nodes starting from the scene
	local scene = M.safe.main_scene
	handle_node(scene)
end

local nodes_waiting_for_name = {}

magic.SubscribeToEvent("NodeAdded", function(event_type, event_data)
	local node = event_data:GetPtr("Node", "Node")
	--log:info("NodeAdded: "..node:GetName())
	if node:GetName() == "" then
		nodes_waiting_for_name[node:GetID()] = true
	else
		for _, v in ipairs(sync_node_added_subs) do
			v(node)
		end
	end
end)

magic.SubscribeToEvent("NodeNameChanged", function(event_type, event_data)
	local node = event_data:GetPtr("Node", "Node")
	--log:info("NodeNameChanged: "..node:GetName())
	if nodes_waiting_for_name[node:GetID()] then
		nodes_waiting_for_name[node:GetID()] = nil
		for _, v in ipairs(sync_node_added_subs) do
			v(node)
		end
	end
end)

return M
-- vim: set noet ts=4 sw=4: