Allow with_relationships param for blocks

lib/pleroma/web/api_spec/operations/account_operation.ex

@@ -410,7 +410,7 @@ def blocks_operation do
       operationId: "AccountController.blocks",
       description: "View your blocks. See also accounts/:id/{block,unblock}",
       security: [%{"oAuth" => ["read:blocks"]}],
-      parameters: pagination_params(),
+      parameters: [with_relationships_param() | pagination_params()],
       responses: %{
         200 => Operation.response("Accounts", "application/json", array_of_accounts())
       }

lib/pleroma/web/mastodon_api/controllers/account_controller.ex

@@ -518,7 +518,12 @@ def blocks(%{assigns: %{user: user}} = conn, params) do
 
     conn
     |> add_link_headers(users)
-    |> render("index.json", users: users, for: user, as: :user)
+    |> render("index.json",
+      users: users,
+      for: user,
+      as: :user,
+      embed_relationships: embed_relationships?(params)
+    )
   end
 
   @doc "GET /api/v1/accounts/lookup"

test/pleroma/web/mastodon_api/controllers/account_controller_test.exs

@@ -1895,6 +1895,39 @@ test "getting a list of blocks" do
     assert [%{"id" => ^id2}] = result
   end
 
+  test "list of blocks with with_relationships parameter" do
+    %{user: user, conn: conn} = oauth_access(["read:blocks"])
+    %{id: id1} = other_user1 = insert(:user)
+    %{id: id2} = other_user2 = insert(:user)
+    %{id: id3} = other_user3 = insert(:user)
+
+    {:ok, _, _} = User.follow(other_user1, user)
+    {:ok, _, _} = User.follow(other_user2, user)
+    {:ok, _, _} = User.follow(other_user3, user)
+
+    {:ok, _} = User.block(user, other_user1)
+    {:ok, _} = User.block(user, other_user2)
+    {:ok, _} = User.block(user, other_user3)
+
+    assert [
+             %{
+               "id" => ^id1,
+               "pleroma" => %{"relationship" => %{"blocking" => true, "followed_by" => false}}
+             },
+             %{
+               "id" => ^id2,
+               "pleroma" => %{"relationship" => %{"blocking" => true, "followed_by" => false}}
+             },
+             %{
+               "id" => ^id3,
+               "pleroma" => %{"relationship" => %{"blocking" => true, "followed_by" => false}}
+             }
+           ] =
+             conn
+             |> get("/api/v1/blocks?with_relationships=true")
+             |> json_response_and_validate_schema(200)
+  end
+
   test "account lookup", %{conn: conn} do
     %{nickname: acct} = insert(:user, %{nickname: "nickname"})
     %{nickname: acct_two} = insert(:user, %{nickname: "nickname@notlocaldoma.in"})