Show privileges to FE

I added an extra key
We already had is_admin and is_moderator, now we have an extra privileges key

lib/pleroma/user.ex

@@ -371,6 +371,28 @@ defmodule Pleroma.User do
 
   defp privileged_for?(_, _, _), do: false
 
+  @spec privileges(User.t()) :: [atom()]
+  def privileges(%User{local: false}) do
+    []
+  end
+
+  def privileges(%User{is_moderator: false, is_admin: false}) do
+    []
+  end
+
+  def privileges(%User{local: true, is_moderator: true, is_admin: true}) do
+    (Config.get([:instance, :moderator_privileges]) ++ Config.get([:instance, :admin_privileges]))
+    |> Enum.uniq()
+  end
+
+  def privileges(%User{local: true, is_moderator: true, is_admin: false}) do
+    Config.get([:instance, :moderator_privileges])
+  end
+
+  def privileges(%User{local: true, is_moderator: false, is_admin: true}) do
+    Config.get([:instance, :admin_privileges])
+  end
+
   @spec invisible?(User.t()) :: boolean()
   def invisible?(%User{invisible: true}), do: true
   def invisible?(_), do: false

lib/pleroma/web/mastodon_api/views/account_view.ex

@@ -369,19 +369,22 @@ defmodule Pleroma.Web.MastodonAPI.AccountView do
   defp maybe_put_chat_token(data, _, _, _), do: data
 
   defp maybe_put_role(data, %User{show_role: true} = user, _) do
-    data
-    |> Kernel.put_in([:pleroma, :is_admin], user.is_admin)
-    |> Kernel.put_in([:pleroma, :is_moderator], user.is_moderator)
+    put_role(data, user)
   end
 
   defp maybe_put_role(data, %User{id: user_id} = user, %User{id: user_id}) do
-    data
-    |> Kernel.put_in([:pleroma, :is_admin], user.is_admin)
-    |> Kernel.put_in([:pleroma, :is_moderator], user.is_moderator)
+    put_role(data, user)
   end
 
   defp maybe_put_role(data, _, _), do: data
 
+  defp put_role(data, user) do
+    data
+    |> Kernel.put_in([:pleroma, :is_admin], user.is_admin)
+    |> Kernel.put_in([:pleroma, :is_moderator], user.is_moderator)
+    |> Kernel.put_in([:pleroma, :privileges], User.privileges(user))
+  end
+
   defp maybe_put_notification_settings(data, %User{id: user_id} = user, %User{id: user_id}) do
     Kernel.put_in(
       data,

test/pleroma/user_test.exs

@@ -1918,6 +1918,44 @@ defmodule Pleroma.UserTest do
     end
   end
 
+  describe "privileges/1" do
+    setup do
+      clear_config([:instance, :moderator_privileges], [:cofe, :only_moderator])
+      clear_config([:instance, :admin_privileges], [:cofe, :only_admin])
+    end
+
+    test "returns empty list for users without roles" do
+      user = insert(:user, local: true)
+
+      assert [] == User.privileges(user)
+    end
+
+    test "returns list of privileges for moderators" do
+      moderator = insert(:user, is_moderator: true, local: true)
+
+      assert [:cofe, :only_moderator] == User.privileges(moderator) |> Enum.sort()
+    end
+
+    test "returns list of privileges for admins" do
+      admin = insert(:user, is_admin: true, local: true)
+
+      assert [:cofe, :only_admin] == User.privileges(admin) |> Enum.sort()
+    end
+
+    test "returns list of unique privileges for users who are both moderator and admin" do
+      moderator_admin = insert(:user, is_moderator: true, is_admin: true, local: true)
+
+      assert [:cofe, :only_admin, :only_moderator] ==
+               User.privileges(moderator_admin) |> Enum.sort()
+    end
+
+    test "returns empty list for remote users" do
+      remote_moderator_admin = insert(:user, is_moderator: true, is_admin: true, local: false)
+
+      assert [] == User.privileges(remote_moderator_admin)
+    end
+  end
+
   describe "invisible?/1" do
     test "returns true for an invisible user" do
       user = insert(:user, local: true, invisible: true)

test/pleroma/web/mastodon_api/views/account_view_test.exs

@@ -84,6 +84,7 @@ defmodule Pleroma.Web.MastodonAPI.AccountViewTest do
         tags: [],
         is_admin: false,
         is_moderator: false,
+        privileges: [],
         is_suggested: false,
         hide_favorites: true,
         hide_followers: false,
@@ -99,6 +100,147 @@ defmodule Pleroma.Web.MastodonAPI.AccountViewTest do
     assert expected == AccountView.render("show.json", %{user: user, skip_visibility_check: true})
   end
 
+  describe "roles and privileges" do
+    setup do
+      clear_config([:instance, :moderator_privileges], [:cofe, :only_moderator])
+      clear_config([:instance, :admin_privileges], [:cofe, :only_admin])
+
+      %{
+        user: insert(:user),
+        moderator: insert(:user, is_moderator: true),
+        admin: insert(:user, is_admin: true),
+        moderator_admin: insert(:user, is_moderator: true, is_admin: true),
+        user_no_show_roles: insert(:user, show_role: false),
+        moderator_admin_no_show_roles:
+          insert(:user, is_moderator: true, is_admin: true, show_role: false)
+      }
+    end
+
+    test "shows roles and privileges when show_role: true", %{
+      user: user,
+      moderator: moderator,
+      admin: admin,
+      moderator_admin: moderator_admin,
+      user_no_show_roles: user_no_show_roles,
+      moderator_admin_no_show_roles: moderator_admin_no_show_roles
+    } do
+      assert %{pleroma: %{is_moderator: false, is_admin: false}} =
+               AccountView.render("show.json", %{user: user, skip_visibility_check: true})
+
+      assert [] ==
+               AccountView.render("show.json", %{user: user, skip_visibility_check: true})[
+                 :pleroma
+               ][:privileges]
+               |> Enum.sort()
+
+      assert %{pleroma: %{is_moderator: true, is_admin: false}} =
+               AccountView.render("show.json", %{user: moderator, skip_visibility_check: true})
+
+      assert [:cofe, :only_moderator] ==
+               AccountView.render("show.json", %{user: moderator, skip_visibility_check: true})[
+                 :pleroma
+               ][:privileges]
+               |> Enum.sort()
+
+      assert %{pleroma: %{is_moderator: false, is_admin: true}} =
+               AccountView.render("show.json", %{user: admin, skip_visibility_check: true})
+
+      assert [:cofe, :only_admin] ==
+               AccountView.render("show.json", %{user: admin, skip_visibility_check: true})[
+                 :pleroma
+               ][:privileges]
+               |> Enum.sort()
+
+      assert %{pleroma: %{is_moderator: true, is_admin: true}} =
+               AccountView.render("show.json", %{
+                 user: moderator_admin,
+                 skip_visibility_check: true
+               })
+
+      assert [:cofe, :only_admin, :only_moderator] ==
+               AccountView.render("show.json", %{
+                 user: moderator_admin,
+                 skip_visibility_check: true
+               })[:pleroma][:privileges]
+               |> Enum.sort()
+
+      refute match?(
+               %{pleroma: %{is_moderator: _}},
+               AccountView.render("show.json", %{
+                 user: user_no_show_roles,
+                 skip_visibility_check: true
+               })
+             )
+
+      refute match?(
+               %{pleroma: %{is_admin: _}},
+               AccountView.render("show.json", %{
+                 user: user_no_show_roles,
+                 skip_visibility_check: true
+               })
+             )
+
+      refute match?(
+               %{pleroma: %{privileges: _}},
+               AccountView.render("show.json", %{
+                 user: user_no_show_roles,
+                 skip_visibility_check: true
+               })
+             )
+
+      refute match?(
+               %{pleroma: %{is_moderator: _}},
+               AccountView.render("show.json", %{
+                 user: moderator_admin_no_show_roles,
+                 skip_visibility_check: true
+               })
+             )
+
+      refute match?(
+               %{pleroma: %{is_admin: _}},
+               AccountView.render("show.json", %{
+                 user: moderator_admin_no_show_roles,
+                 skip_visibility_check: true
+               })
+             )
+
+      refute match?(
+               %{pleroma: %{privileges: _}},
+               AccountView.render("show.json", %{
+                 user: moderator_admin_no_show_roles,
+                 skip_visibility_check: true
+               })
+             )
+    end
+
+    test "shows roles and privileges when viewing own account, even when show_role: false", %{
+      user_no_show_roles: user_no_show_roles,
+      moderator_admin_no_show_roles: moderator_admin_no_show_roles
+    } do
+      assert %{pleroma: %{is_moderator: false, is_admin: false, privileges: []}} =
+               AccountView.render("show.json", %{
+                 user: user_no_show_roles,
+                 skip_visibility_check: true,
+                 for: user_no_show_roles
+               })
+
+      assert %{
+               pleroma: %{
+                 is_moderator: true,
+                 is_admin: true,
+                 privileges: privileges
+               }
+             } =
+               AccountView.render("show.json", %{
+                 user: moderator_admin_no_show_roles,
+                 skip_visibility_check: true,
+                 for: moderator_admin_no_show_roles
+               })
+
+      assert [:cofe, :only_admin, :only_moderator] == privileges |> Enum.sort()
+    end
+  end
+
   describe "favicon" do
     setup do
       [user: insert(:user)]
@@ -186,6 +328,7 @@ defmodule Pleroma.Web.MastodonAPI.AccountViewTest do
         tags: [],
         is_admin: false,
         is_moderator: false,
+        privileges: [],
         is_suggested: false,
         hide_favorites: true,
         hide_followers: false,