user: Add support for custom emojis in profile fields

lib/pleroma/user.ex

@@ -527,11 +527,21 @@ defmodule Pleroma.User do
   end
 
   defp put_emoji(changeset) do
-    bio = get_change(changeset, :bio)
-    name = get_change(changeset, :name)
+    emojified_fields = [:bio, :name, :raw_fields]
+
+    if Enum.any?(changeset.changes, fn {k, _} -> k in emojified_fields end) do
+      bio = Emoji.Formatter.get_emoji_map(get_field(changeset, :bio))
+      name = Emoji.Formatter.get_emoji_map(get_field(changeset, :name))
+
+      emoji = Map.merge(bio, name)
+
+      emoji =
+        changeset
+        |> get_field(:raw_fields)
+        |> Enum.reduce(emoji, fn x, acc ->
+          Map.merge(acc, Emoji.Formatter.get_emoji_map(x["name"] <> x["value"]))
+        end)
 
-    if bio || name do
-      emoji = Map.merge(Emoji.Formatter.get_emoji_map(bio), Emoji.Formatter.get_emoji_map(name))
       put_change(changeset, :emoji, emoji)
     else
       changeset

test/web/mastodon_api/controllers/account_controller/update_credentials_test.exs

@@ -344,6 +344,30 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController.UpdateCredentialsTest do
              ]
     end
 
+    test "emojis in fields labels", %{conn: conn} do
+      fields = [
+        %{"name" => ":firefox:", "value" => "is best 2hu"},
+        %{"name" => "they wins", "value" => ":blank:"}
+      ]
+
+      account_data =
+        conn
+        |> patch("/api/v1/accounts/update_credentials", %{"fields_attributes" => fields})
+        |> json_response_and_validate_schema(200)
+
+      assert account_data["fields"] == [
+               %{"name" => ":firefox:", "value" => "is best 2hu"},
+               %{"name" => "they wins", "value" => ":blank:"}
+             ]
+
+      assert account_data["source"]["fields"] == [
+               %{"name" => ":firefox:", "value" => "is best 2hu"},
+               %{"name" => "they wins", "value" => ":blank:"}
+             ]
+
+      assert [%{"shortcode" => "blank"}, %{"shortcode" => "firefox"}] = account_data["emojis"]
+    end
+
     test "update fields via x-www-form-urlencoded", %{conn: conn} do
       fields =
         [