Implement search with PostgreSQL trigrams

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

Rename function to reflect that we only get one result

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

Add loggers and make Ecto call parallels during search

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

Implement trigrams for events & replace pg similarity operator % with <%

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

Fix tests

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

test/mobilizon_web/api/search_test.exs

@@ -0,0 +1,55 @@
+defmodule MobilizonWeb.API.SearchTest do
+  use ExUnit.Case, async: false
+
+  alias Mobilizon.Events
+  alias Mobilizon.Events.Event
+  alias Mobilizon.Actors
+  alias Mobilizon.Actors.Actor
+  alias Mobilizon.Service.ActivityPub
+  alias MobilizonWeb.API.Search
+
+  import Mock
+
+  test "search an user by username" do
+    with_mock ActivityPub,
+      find_or_make_actor_from_nickname: fn "toto@domain.tld" -> {:ok, %Actor{id: 1}} end do
+      assert {:ok, %Actor{id: 1}} == Search.search("toto@domain.tld")
+      assert_called(ActivityPub.find_or_make_actor_from_nickname("toto@domain.tld"))
+    end
+  end
+
+  test "search something by URL" do
+    with_mock ActivityPub,
+      fetch_object_from_url: fn "https://social.tcit.fr/users/tcit" -> {:ok, %Actor{id: 1}} end do
+      assert {:ok, %Actor{id: 1}} == Search.search("https://social.tcit.fr/users/tcit")
+      assert_called(ActivityPub.fetch_object_from_url("https://social.tcit.fr/users/tcit"))
+    end
+  end
+
+  test "search everything" do
+    with_mocks([
+      {Actors, [], [find_actors_by_username_or_name: fn "toto", 1, 10 -> [%Actor{}] end]},
+      {Events, [], [find_events_by_name: fn "toto", 1, 10 -> [%Event{}] end]}
+    ]) do
+      assert {:ok, [%Event{}, %Actor{}]} = Search.search("toto")
+      assert_called(Actors.find_actors_by_username_or_name("toto", 1, 10))
+      assert_called(Events.find_events_by_name("toto", 1, 10))
+    end
+  end
+
+  test "search actors" do
+    with_mock Actors,
+      find_actors_by_username_or_name: fn "toto", 1, 10 -> [%Actor{}] end do
+      assert {:ok, [%Actor{}]} = Search.search_actors("toto")
+      assert_called(Actors.find_actors_by_username_or_name("toto", 1, 10))
+    end
+  end
+
+  test "search events" do
+    with_mock Events,
+      find_events_by_name: fn "toto", 1, 10 -> [%Event{}] end do
+      assert {:ok, [%Event{}]} = Search.search_events("toto")
+      assert_called(Events.find_events_by_name("toto", 1, 10))
+    end
+  end
+end