eventMiddleware.lua

-- event Middleware
-- AvataX / OverHash
-- September 25, 2020
-- Replicates actions to client via RemoteEvent

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local Network = ReplicatedStorage:FindFirstChild("Network")
local storeChangeEvent
if not Network then
	local Folder = Instance.new("Folder")
	Folder.Name = "Network"
	Folder.Parent = ReplicatedStorage
	local RE = Instance.new("RemoteEvent")
	RE.Name = "storeChange"
	RE.Parent = Folder
end
storeChangeEvent = ReplicatedStorage:WaitForChild("Network"):WaitForChild("storeChange")

local function eventMiddleware(nextDispatch, store)
    return function(action)
        if typeof(action) == "function" then
            print("That was weird. The dispatched action is a "..typeof(action).." named "..tostring(action))
        else
            nextDispatch(action)
            if action.ONLY_REPLICATE_TO then -- Action has an array of players that need this information
                for _, player in ipairs(action.ONLY_REPLICATE_TO) do
                    print("Privately firing to "..tostring(player))
                    storeChangeEvent:FireClient(player,action)
                end
            else                            -- All the clients need to know
                storeChangeEvent:FireAllClients(action)
            end
        end
    end
end

return eventMiddleware