Add custom-emoji license support

app/lib/activitypub/activity/create.rb

@@ -263,7 +263,13 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
     return unless emoji.nil? || custom_emoji_parser.image_remote_url != emoji.image_remote_url || (custom_emoji_parser.updated_at && custom_emoji_parser.updated_at >= emoji.updated_at)
 
     begin
-      emoji ||= CustomEmoji.new(domain: @account.domain, shortcode: custom_emoji_parser.shortcode, uri: custom_emoji_parser.uri, is_sensitive: custom_emoji_parser.is_sensitive)
+      emoji ||= CustomEmoji.new(
+        domain: @account.domain,
+        shortcode: custom_emoji_parser.shortcode,
+        uri: custom_emoji_parser.uri,
+        is_sensitive: custom_emoji_parser.is_sensitive,
+        license: custom_emoji_parser.license
+      )
       emoji.image_remote_url = custom_emoji_parser.image_remote_url
       emoji.save
     rescue Seahorse::Client::NetworkingError => e

app/lib/activitypub/parser/custom_emoji_parser.rb

@@ -28,4 +28,8 @@ class ActivityPub::Parser::CustomEmojiParser
   def is_sensitive # rubocop:disable Naming/PredicateName
     (@json['isSensitive'].presence || false)
   end
+
+  def license
+    @json['license']
+  end
 end

app/models/custom_emoji.rb

@@ -23,6 +23,7 @@
 #  image_height                 :integer
 #  aliases                      :jsonb
 #  is_sensitive                 :boolean          default(FALSE), not null
+#  license                      :string
 #
 
 class CustomEmoji < ApplicationRecord

db/migrate/20230522093135_add_license_to_custom_emojis.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class AddLicenseToCustomEmojis < ActiveRecord::Migration[6.1]
+  def change
+    add_column :custom_emojis, :license, :string, null: true
+  end
+end

db/schema.rb

@@ -12,7 +12,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2023_05_22_082252) do
+ActiveRecord::Schema.define(version: 2023_05_22_093135) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -440,6 +440,7 @@ ActiveRecord::Schema.define(version: 2023_05_22_082252) do
     t.integer "image_height"
     t.jsonb "aliases"
     t.boolean "is_sensitive", default: false, null: false
+    t.string "license"
     t.index ["shortcode", "domain"], name: "index_custom_emojis_on_shortcode_and_domain", unique: true
   end