From 0c1eaf26341b1615689149f46c424d15fb098c70 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?marcin=20miko=C5=82ajczak?= <git@mkljczk.pl>
Date: Sat, 5 Nov 2022 13:05:14 +0100
Subject: [PATCH] Add contact account to InstanceView
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: marcin mikołajczak <git@mkljczk.pl>
---
 config/description.exs                        |  6 ++++++
 .../web/mastodon_api/views/instance_view.ex   | 21 ++++++++++++++++++-
 .../controllers/instance_controller_test.exs  | 14 +++++++++++--
 3 files changed, 38 insertions(+), 3 deletions(-)

diff --git a/config/description.exs b/config/description.exs
index bdf57dd633..b038051063 100644
--- a/config/description.exs
+++ b/config/description.exs
@@ -566,6 +566,12 @@
           "Cool instance"
         ]
       },
+      %{
+        key: :contact_username,
+        type: :string,
+        description: "Instance owner username",
+        suggestions: ["admin"]
+      },
       %{
         key: :limit,
         type: :integer,
diff --git a/lib/pleroma/web/mastodon_api/views/instance_view.ex b/lib/pleroma/web/mastodon_api/views/instance_view.ex
index f8852e9a45..7fe150ccb4 100644
--- a/lib/pleroma/web/mastodon_api/views/instance_view.ex
+++ b/lib/pleroma/web/mastodon_api/views/instance_view.ex
@@ -6,7 +6,9 @@ defmodule Pleroma.Web.MastodonAPI.InstanceView do
   use Pleroma.Web, :view
 
   alias Pleroma.Config
+  alias Pleroma.User
   alias Pleroma.Web.ActivityPub.MRF
+  alias Pleroma.Web.MastodonAPI
 
   @mastodon_api_level "2.7.2"
 
@@ -31,6 +33,7 @@ def render("show.json", _) do
       registrations: Keyword.get(instance, :registrations_open),
       approval_required: Keyword.get(instance, :account_approval_required),
       configuration: configuration(),
+      contact_account: contact_account(Keyword.get(instance, :contact_username)),
       rules: render(__MODULE__, "rules.json"),
       # Extra (not present in Mastodon):
       max_toot_chars: Keyword.get(instance, :limit),
@@ -74,7 +77,7 @@ def render("show2.json", _) do
       },
       contact: %{
         email: Keyword.get(instance, :email),
-        account: nil
+        account: contact_account(Keyword.get(instance, :contact_username))
       },
       rules: render(__MODULE__, "rules.json"),
       # Extra (not present in Mastodon):
@@ -250,4 +253,20 @@ defp pleroma_configuration2(instance) do
         })
     })
   end
+
+  defp contact_account(nil), do: nil
+
+  defp contact_account("@" <> username) do
+    contact_account(username)
+  end
+
+  defp contact_account(username) do
+    user = User.get_cached_by_nickname(username)
+
+    if user do
+      MastodonAPI.AccountView.render("show.json", %{user: user, for: nil})
+    else
+      nil
+    end
+  end
 end
diff --git a/test/pleroma/web/mastodon_api/controllers/instance_controller_test.exs b/test/pleroma/web/mastodon_api/controllers/instance_controller_test.exs
index 953e6008df..4db9b4da8f 100644
--- a/test/pleroma/web/mastodon_api/controllers/instance_controller_test.exs
+++ b/test/pleroma/web/mastodon_api/controllers/instance_controller_test.exs
@@ -139,9 +139,19 @@ test "get oauth_consumer_strategies", %{conn: conn} do
     assert result["pleroma"]["oauth_consumer_strategies"] == ["keycloak"]
   end
 
-  test "get instance information v2", %{conn: conn} do
-    clear_config([:auth, :oauth_consumer_strategies], [])
+  test "get instance contact information", %{conn: conn} do
+    user = insert(:user, %{local: true})
 
+    clear_config([:instance, :contact_username], user.nickname)
+
+    conn = get(conn, "/api/v1/instance")
+
+    assert result = json_response_and_validate_schema(conn, 200)
+
+    assert result["contact_account"]["id"] == user.id
+  end
+
+  test "get instance information v2", %{conn: conn} do
     assert get(conn, "/api/v2/instance")
            |> json_response_and_validate_schema(200)
   end