From 3a4773c3c2bd0bbef244eb519b07208da9108e49 Mon Sep 17 00:00:00 2001
From: dcc <dcc@logografos.com>
Date: Sat, 2 Sep 2023 00:52:52 -0700
Subject: First

---
 .../web/mastodon_api/views/conversation_view.ex    | 58 ++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 lib/pleroma/web/mastodon_api/views/conversation_view.ex

(limited to 'lib/pleroma/web/mastodon_api/views/conversation_view.ex')

diff --git a/lib/pleroma/web/mastodon_api/views/conversation_view.ex b/lib/pleroma/web/mastodon_api/views/conversation_view.ex
new file mode 100644
index 0000000..f6577cd
--- /dev/null
+++ b/lib/pleroma/web/mastodon_api/views/conversation_view.ex
@@ -0,0 +1,58 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.MastodonAPI.ConversationView do
+  use Pleroma.Web, :view
+
+  alias Pleroma.Activity
+  alias Pleroma.Repo
+  alias Pleroma.Web.ActivityPub.ActivityPub
+  alias Pleroma.Web.MastodonAPI.AccountView
+  alias Pleroma.Web.MastodonAPI.StatusView
+
+  def render("participations.json", %{participations: participations, for: user}) do
+    safe_render_many(participations, __MODULE__, "participation.json", %{
+      as: :participation,
+      for: user
+    })
+  end
+
+  def render("participation.json", %{participation: participation, for: user}) do
+    participation = Repo.preload(participation, conversation: [], recipients: [])
+
+    last_activity_id =
+      with nil <- participation.last_activity_id do
+        ActivityPub.fetch_latest_direct_activity_id_for_context(
+          participation.conversation.ap_id,
+          %{
+            user: user,
+            blocking_user: user
+          }
+        )
+      end
+
+    activity = Activity.get_by_id_with_object(last_activity_id)
+
+    # Conversations return all users except the current user,
+    # except when the current user is the only participant
+    users =
+      if length(participation.recipients) > 1 do
+        Enum.reject(participation.recipients, &(&1.id == user.id))
+      else
+        participation.recipients
+      end
+
+    %{
+      id: participation.id |> to_string(),
+      accounts: render(AccountView, "index.json", users: users, for: user),
+      unread: !participation.read,
+      last_status:
+        render(StatusView, "show.json",
+          activity: activity,
+          direct_conversation_id: participation.id,
+          for: user
+        )
+    }
+  end
+end
-- 
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