ChatController: Don't return chats for user you've blocked.

lib/pleroma/web/pleroma_api/controllers/chat_controller.ex

@@ -102,10 +102,13 @@ def messages(%{assigns: %{user: %{id: user_id} = user}} = conn, %{id: id} = para
     end
   end
 
-  def index(%{assigns: %{user: %{id: user_id}}} = conn, params) do
+  def index(%{assigns: %{user: %{id: user_id} = user}} = conn, params) do
+    blocked_ap_ids = User.blocked_users_ap_ids(user)
+
     chats =
       from(c in Chat,
         where: c.user_id == ^user_id,
+        where: c.recipient not in ^blocked_ap_ids,
         order_by: [desc: c.updated_at]
       )
       |> Pagination.fetch_paginated(params |> stringify_keys)

test/web/pleroma_api/controllers/chat_controller_test.exs

@@ -6,6 +6,7 @@ defmodule Pleroma.Web.PleromaAPI.ChatControllerTest do
 
   alias Pleroma.Chat
   alias Pleroma.Object
+  alias Pleroma.User
   alias Pleroma.Web.ActivityPub.ActivityPub
   alias Pleroma.Web.CommonAPI
 
@@ -209,6 +210,28 @@ test "it returns a chat", %{conn: conn, user: user} do
   describe "GET /api/v1/pleroma/chats" do
     setup do: oauth_access(["read:statuses"])
 
+    test "it does not return chats with users you blocked", %{conn: conn, user: user} do
+      recipient = insert(:user)
+
+      {:ok, _} = Chat.get_or_create(user.id, recipient.ap_id)
+
+      result =
+        conn
+        |> get("/api/v1/pleroma/chats")
+        |> json_response_and_validate_schema(200)
+
+      assert length(result) == 1
+
+      User.block(user, recipient)
+
+      result =
+        conn
+        |> get("/api/v1/pleroma/chats")
+        |> json_response_and_validate_schema(200)
+
+      assert length(result) == 0
+    end
+
     test "it paginates", %{conn: conn, user: user} do
       Enum.each(1..30, fn _ ->
         recipient = insert(:user)