ActivityPub User view: Following/Followers refactoring

- Render the collection items if the user requesting == the user
rendered
- Do not render the first page if hide_{followers,follows} is set, just
give the URI to it

lib/pleroma/web/activity_pub/views/user_view.ex

@@ -98,29 +98,31 @@ def render("user.json", %{user: user}) do
     |> Map.merge(Utils.make_json_ld_header())
   end
 
-  def render("following.json", %{user: user, page: page}) do
+  def render("following.json", %{user: user, page: page} = opts) do
+    showing = (opts[:for] && opts[:for] == user) || !user.info.hide_follows
     query = User.get_friends_query(user)
     query = from(user in query, select: [:ap_id])
     following = Repo.all(query)
 
     total =
-      if !user.info.hide_follows do
+      if showing do
         length(following)
       else
         0
       end
 
-    collection(following, "#{user.ap_id}/following", page, !user.info.hide_follows, total)
+    collection(following, "#{user.ap_id}/following", page, showing, total)
     |> Map.merge(Utils.make_json_ld_header())
   end
 
-  def render("following.json", %{user: user}) do
+  def render("following.json", %{user: user} = opts) do
+    showing = (opts[:for] && opts[:for] == user) || !user.info.hide_follows
     query = User.get_friends_query(user)
     query = from(user in query, select: [:ap_id])
     following = Repo.all(query)
 
     total =
-      if !user.info.hide_follows do
+      if showing do
         length(following)
       else
         0
@@ -130,34 +132,43 @@ def render("following.json", %{user: user}) do
       "id" => "#{user.ap_id}/following",
       "type" => "OrderedCollection",
       "totalItems" => total,
-      "first" => collection(following, "#{user.ap_id}/following", 1, !user.info.hide_follows)
+      "first" =>
+        if showing do
+          collection(following, "#{user.ap_id}/following", 1, !user.info.hide_follows)
+        else
+          "#{user.ap_id}/following?page=1"
+        end
     }
     |> Map.merge(Utils.make_json_ld_header())
   end
 
-  def render("followers.json", %{user: user, page: page}) do
+  def render("followers.json", %{user: user, page: page} = opts) do
+    showing = (opts[:for] && opts[:for] == user) || !user.info.hide_followers
+
     query = User.get_followers_query(user)
     query = from(user in query, select: [:ap_id])
     followers = Repo.all(query)
 
     total =
-      if !user.info.hide_followers do
+      if showing do
         length(followers)
       else
         0
       end
 
-    collection(followers, "#{user.ap_id}/followers", page, !user.info.hide_followers, total)
+    collection(followers, "#{user.ap_id}/followers", page, showing, total)
     |> Map.merge(Utils.make_json_ld_header())
   end
 
-  def render("followers.json", %{user: user}) do
+  def render("followers.json", %{user: user} = opts) do
+    showing = (opts[:for] && opts[:for] == user) || !user.info.hide_followers
+
     query = User.get_followers_query(user)
     query = from(user in query, select: [:ap_id])
     followers = Repo.all(query)
 
     total =
-      if !user.info.hide_followers do
+      if showing do
         length(followers)
       else
         0
@@ -168,7 +179,11 @@ def render("followers.json", %{user: user}) do
       "type" => "OrderedCollection",
       "totalItems" => total,
       "first" =>
-        collection(followers, "#{user.ap_id}/followers", 1, !user.info.hide_followers, total)
+        if showing do
+          collection(followers, "#{user.ap_id}/followers", 1, showing, total)
+        else
+          "#{user.ap_id}/followers?page=1"
+        end
     }
     |> Map.merge(Utils.make_json_ld_header())
   end

test/web/activity_pub/activity_pub_controller_test.exs

@@ -551,7 +551,7 @@ test "it returns the followers in a collection", %{conn: conn} do
       assert result["first"]["orderedItems"] == [user.ap_id]
     end
 
-    test "it returns returns empty if the user has 'hide_followers' set", %{conn: conn} do
+    test "it returns returns a uri if the user has 'hide_followers' set", %{conn: conn} do
       user = insert(:user)
       user_two = insert(:user, %{info: %{hide_followers: true}})
       User.follow(user, user_two)
@@ -561,8 +561,7 @@ test "it returns returns empty if the user has 'hide_followers' set", %{conn: co
         |> get("/users/#{user_two.nickname}/followers")
         |> json_response(200)
 
-      assert result["first"]["orderedItems"] == []
+      assert is_binary(result["first"])
-      assert result["totalItems"] == 0
     end
 
     test "it works for more than 10 users", %{conn: conn} do
@@ -606,7 +605,7 @@ test "it returns the following in a collection", %{conn: conn} do
       assert result["first"]["orderedItems"] == [user_two.ap_id]
     end
 
-    test "it returns returns empty if the user has 'hide_follows' set", %{conn: conn} do
+    test "it returns a uri if the user has 'hide_follows' set", %{conn: conn} do
       user = insert(:user, %{info: %{hide_follows: true}})
       user_two = insert(:user)
       User.follow(user, user_two)
@@ -616,8 +615,7 @@ test "it returns returns empty if the user has 'hide_follows' set", %{conn: conn
         |> get("/users/#{user.nickname}/following")
         |> json_response(200)
 
-      assert result["first"]["orderedItems"] == []
+      assert is_binary(result["first"])
-      assert result["totalItems"] == 0
     end
 
     test "it works for more than 10 users", %{conn: conn} do