From a1a25029da74949a79c73d400b6f2bc0bf1dc01a Mon Sep 17 00:00:00 2001
From: Lain Soykaf <lain@lain.com>
Date: Sun, 12 Nov 2023 16:19:54 +0400
Subject: [PATCH] B DatabaseSearch: Fix local-only search.

---
 lib/pleroma/search/database_search.ex         | 25 ++++++++++++++-----
 ...earch_test.ex => database_search_test.exs} |  8 +++---
 2 files changed, 23 insertions(+), 10 deletions(-)
 rename test/pleroma/search/{database_search_test.ex => database_search_test.exs} (88%)

diff --git a/lib/pleroma/search/database_search.ex b/lib/pleroma/search/database_search.ex
index 9a340abf1..f4c405773 100644
--- a/lib/pleroma/search/database_search.ex
+++ b/lib/pleroma/search/database_search.ex
@@ -8,6 +8,7 @@ defmodule Pleroma.Search.DatabaseSearch do
   alias Pleroma.Pagination
   alias Pleroma.User
   alias Pleroma.Web.ActivityPub.Visibility
+  alias Pleroma.Config
 
   require Pleroma.Constants
 
@@ -17,7 +18,7 @@ defmodule Pleroma.Search.DatabaseSearch do
 
   @impl true
   def search(user, search_query, options \\ []) do
-    index_type = if Pleroma.Config.get([:database, :rum_enabled]), do: :rum, else: :gin
+    index_type = if Config.get([:database, :rum_enabled]), do: :rum, else: :gin
     limit = Enum.min([Keyword.get(options, :limit), 40])
     offset = Keyword.get(options, :offset, 0)
     author = Keyword.get(options, :author)
@@ -33,7 +34,7 @@ def search(user, search_query, options \\ []) do
       Activity
       |> Activity.with_preloaded_object()
       |> Activity.restrict_deactivated_users()
-      |> restrict_public()
+      |> restrict_public(user)
       |> query_with(index_type, search_query, search_function)
       |> maybe_restrict_local(user)
       |> maybe_restrict_author(author)
@@ -49,10 +50,10 @@ def search(user, search_query, options \\ []) do
   end
 
   @impl true
-  def add_to_index(_activity), do: nil
+  def add_to_index(_activity), do: :ok
 
   @impl true
-  def remove_from_index(_object), do: nil
+  def remove_from_index(_object), do: :ok
 
   def maybe_restrict_author(query, %User{} = author) do
     Activity.Queries.by_author(query, author)
@@ -66,7 +67,19 @@ def maybe_restrict_blocked(query, %User{} = user) do
 
   def maybe_restrict_blocked(query, _), do: query
 
-  def restrict_public(q) do
+  defp restrict_public(q, user) when not is_nil(user) do
+    intended_recipients = [
+      Pleroma.Constants.as_public(),
+      Pleroma.Web.ActivityPub.Utils.as_local_public()
+    ]
+
+    from([a, o] in q,
+      where: fragment("?->>'type' = 'Create'", a.data),
+      where: fragment("? && ?", ^intended_recipients, a.recipients)
+    )
+  end
+
+  defp restrict_public(q, _user) do
     from([a, o] in q,
       where: fragment("?->>'type' = 'Create'", a.data),
       where: ^Pleroma.Constants.as_public() in a.recipients
@@ -134,7 +147,7 @@ defp query_with(q, :rum, search_query, :websearch) do
   end
 
   def maybe_restrict_local(q, user) do
-    limit = Pleroma.Config.get([:instance, :limit_to_local_content], :unauthenticated)
+    limit = Config.get([:instance, :limit_to_local_content], :unauthenticated)
 
     case {limit, user} do
       {:all, _} -> restrict_local(q)
diff --git a/test/pleroma/search/database_search_test.ex b/test/pleroma/search/database_search_test.exs
similarity index 88%
rename from test/pleroma/search/database_search_test.ex
rename to test/pleroma/search/database_search_test.exs
index c123d0b84..6c47ff425 100644
--- a/test/pleroma/search/database_search_test.ex
+++ b/test/pleroma/search/database_search_test.exs
@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Search.DatabaseSearchTest do
-  alias Pleroma.Search.DatabaseSearch
+  alias Pleroma.Search.DatabaseSearch, as: Search
   alias Pleroma.Web.CommonAPI
   import Pleroma.Factory
 
@@ -13,7 +13,7 @@ test "it finds something" do
     user = insert(:user)
     {:ok, post} = CommonAPI.post(user, %{status: "it's wednesday my dudes"})
 
-    [result] = DatabaseSearch.search(nil, "wednesday")
+    [result] = Search.search(nil, "wednesday")
 
     assert result.id == post.id
   end
@@ -45,7 +45,7 @@ test "using plainto_tsquery on postgres < 11" do
     {:ok, _post2} = CommonAPI.post(user, %{status: "it's wednesday my bros"})
 
     # plainto doesn't understand complex queries
-    assert [result] = DatabaseSearch.search(nil, "wednesday -dudes")
+    assert [result] = Search.search(nil, "wednesday -dudes")
 
     assert result.id == post.id
   end
@@ -55,7 +55,7 @@ test "using websearch_to_tsquery" do
     {:ok, _post} = CommonAPI.post(user, %{status: "it's wednesday my dudes"})
     {:ok, other_post} = CommonAPI.post(user, %{status: "it's wednesday my bros"})
 
-    assert [result] = DatabaseSearch.search(nil, "wednesday -dudes")
+    assert [result] = Search.search(nil, "wednesday -dudes")
 
     assert result.id == other_post.id
   end