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

---
 lib/pleroma/web/metadata/utils.ex | 67 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 lib/pleroma/web/metadata/utils.ex

(limited to 'lib/pleroma/web/metadata/utils.ex')

diff --git a/lib/pleroma/web/metadata/utils.ex b/lib/pleroma/web/metadata/utils.ex
new file mode 100644
index 0000000..80a8be9
--- /dev/null
+++ b/lib/pleroma/web/metadata/utils.ex
@@ -0,0 +1,67 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.Metadata.Utils do
+  alias Pleroma.Activity
+  alias Pleroma.Emoji
+  alias Pleroma.Formatter
+  alias Pleroma.HTML
+
+  defp scrub_html_and_truncate_object_field(field, object) do
+    field
+    # html content comes from DB already encoded, decode first and scrub after
+    |> HtmlEntities.decode()
+    |> String.replace(~r/<br\s?\/?>/, " ")
+    |> Activity.HTML.get_cached_stripped_html_for_activity(object, "metadata")
+    |> Emoji.Formatter.demojify()
+    |> HtmlEntities.decode()
+    |> Formatter.truncate()
+  end
+
+  def scrub_html_and_truncate(%{data: %{"summary" => summary}} = object)
+      when is_binary(summary) and summary != "" do
+    summary
+    |> scrub_html_and_truncate_object_field(object)
+  end
+
+  def scrub_html_and_truncate(%{data: %{"content" => content}} = object) do
+    content
+    |> scrub_html_and_truncate_object_field(object)
+  end
+
+  def scrub_html_and_truncate(content, max_length \\ 200, omission \\ "...")
+      when is_binary(content) do
+    content
+    |> scrub_html
+    |> Emoji.Formatter.demojify()
+    |> HtmlEntities.decode()
+    |> Formatter.truncate(max_length, omission)
+  end
+
+  def scrub_html(content) when is_binary(content) do
+    content
+    # html content comes from DB already encoded, decode first and scrub after
+    |> HtmlEntities.decode()
+    |> String.replace(~r/<br\s?\/?>/, " ")
+    |> HTML.strip_tags()
+  end
+
+  def scrub_html(content), do: content
+
+  def user_name_string(user) do
+    "#{user.name} " <>
+      if user.local do
+        "(@#{user.nickname}@#{Pleroma.Web.Endpoint.host()})"
+      else
+        "(@#{user.nickname})"
+      end
+  end
+
+  @spec fetch_media_type(list(String.t()), String.t()) :: String.t() | nil
+  def fetch_media_type(supported_types, media_type) do
+    Enum.find(supported_types, fn support_type ->
+      String.starts_with?(media_type, support_type)
+    end)
+  end
+end
-- 
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