Working s3 compatible file uplaods!

lib/mixer/posts/media.ex

@@ -5,7 +5,6 @@ defmodule Mixer.Posts.Media do
     data_layer: AshPostgres.DataLayer,
     authorizers: [Ash.Policy.Authorizer],
     extensions: [
-      #AshStateMachine,
       AshTypescript.Resource
     ]
 
@@ -19,7 +18,20 @@ defmodule Mixer.Posts.Media do
   end
 
   actions do
-    defaults [:read, :destroy, create: :*, update: :*]
+    defaults [:read]
+
+    create :upload do
+      accept [:s3_key]
+      change relate_actor(:user)
+    end
+
+    update :link_to_tweet do
+      accept [:tweet_id]
+    end
+
+    destroy :destroy do
+      primary? true
+    end
   end
 
   attributes do
@@ -29,12 +41,41 @@ defmodule Mixer.Posts.Media do
       allow_nil? false
       public? true
     end
-  end
 
-  relationships do
-    belongs_to :tweet, Mixer.Posts.Tweet do
+    attribute :user_id, :uuid do
       allow_nil? false
       public? true
     end
   end
+
+  relationships do
+    belongs_to :user, Mixer.Accounts.User do
+      attribute_writable? true
+      allow_nil? false
+      public? true
+    end
+
+    belongs_to :tweet, Mixer.Posts.Tweet do
+      allow_nil? true
+      public? true
+    end
+  end
+
+  policies do
+    policy action_type(:read) do
+      authorize_if always()
+    end
+
+    policy action(:upload) do
+      authorize_if actor_present()
+    end
+
+    policy action(:link_to_tweet) do
+      authorize_if relates_to_actor_via(:user)
+    end
+
+    policy action_type(:destroy) do
+      authorize_if relates_to_actor_via(:user)
+    end
+  end
 end