Refactor posting and make character limit configurable.

test/web/common_api/common_api_utils_test.exs

@@ -0,0 +1,16 @@
+defmodule Pleroma.Web.CommonAPI.UtilsTest do
+  alias Pleroma.Web.CommonAPI.Utils
+  use Pleroma.DataCase
+
+  test "it adds attachment links to a given text and attachment set" do
+    name = "Sakura%20Mana%20%E2%80%93%20Turned%20on%20by%20a%20Senior%20OL%20with%20a%20Temptating%20Tight%20Skirt-s%20Full%20Hipline%20and%20Panty%20Shot-%20Beautiful%20Thick%20Thighs-%20and%20Erotic%20Ass-%20-2015-%20--%20Oppaitime%208-28-2017%206-50-33%20PM.png"
+
+    attachment = %{
+      "url" => [%{"href" => name}]
+    }
+
+    res = Utils.add_attachments("", [attachment])
+
+    assert res == "<br>\n<a href=\"#{name}\" class='attachment'>Sakura Mana – Turned on by a Se…</a>"
+  end
+end