#306

backend/app/models/material.rb

@@ -9,7 +9,6 @@ class Material < ApplicationRecord
   belongs_to :tag, optional: true
   belongs_to :created_by_user, class_name: 'User', optional: true
   belongs_to :updated_by_user, class_name: 'User', optional: true
-  belongs_to :file_suppressed_by_user, class_name: 'User', optional: true
 
   has_many :material_versions, dependent: :destroy
   has_many :material_export_items, dependent: :destroy
@@ -17,13 +16,17 @@ class Material < ApplicationRecord
   has_one_attached :file, dependent: :purge
   has_one_attached :thumbnail, dependent: :purge
 
+  before_validation :assign_normalized_source_key
+
   validates :tag_id, presence: true, uniqueness: true
+  validates :source_kind,
+            inclusion: { in: MaterialSyncSuppression::SOURCE_KINDS },
+            allow_blank: true
 
   validate :file_must_be_attached
   validate :tag_must_be_material_category
 
   def content_type
-    return nil if file_suppressed?
     return nil unless file&.attached?
 
     file.blob.content_type
@@ -41,14 +44,25 @@ class Material < ApplicationRecord
     file.blob.filename.to_s
   end
 
-  def file_suppressed? = file_suppressed_at.present?
-
   def snapshot_export_paths
     material_export_items.order(:profile).pluck(:profile, :export_path).to_h
   end
 
   private
 
+  def assign_normalized_source_key
+    if source_kind.blank?
+      self.normalized_source_key = nil
+      return
+    end
+
+    self.normalized_source_key =
+        MaterialSyncSuppression.normalize_source_key(source_kind:,
+                                                     source_uri:,
+                                                     drive_path: source_path,
+                                                     drive_file_id: source_file_id)
+  end
+
   def file_must_be_attached
     return if url.present? || file.attached?