add gs

RCCService2021/ExtraContent/LuaPackages/UGCValidationImpl/validation/validateMaterials.lua

@@ -0,0 +1,30 @@
+local root = script.Parent.Parent
+
+local Constants = require(root.Constants)
+
+-- ensures no descendant of instance has a material that does not exist in Constants.MATERIAL_WHITELIST
+local function validateMaterials(instance)
+	local materialFailures = {}
+	for _, descendant in pairs(instance:GetDescendants()) do
+		if descendant:IsA("BasePart") and not Constants.MATERIAL_WHITELIST[descendant.Material] then
+			materialFailures[#materialFailures + 1] = descendant:GetFullName()
+		end
+	end
+	if #materialFailures > 0 then
+		local reasons = {}
+		local acceptedMaterialNames = {}
+		for material in pairs(Constants.MATERIAL_WHITELIST) do
+			acceptedMaterialNames[#acceptedMaterialNames + 1] = material.Name
+		end
+		reasons[#reasons + 1] = "Invalid materials for"
+		for _, name in pairs(materialFailures) do
+			reasons[#reasons + 1] = name
+		end
+		reasons[#reasons + 1] = "Accepted materials are " .. table.concat(acceptedMaterialNames, ", ")
+		return false, reasons
+	end
+
+	return true
+end
+
+return validateMaterials