mastodon/app/lib/activitypub/activity/remove.rb

# frozen_string_literal: true

class ActivityPub::Activity::Remove < ActivityPub::Activity
  def perform
    return if @json['target'].blank?

    case value_or_id(@json['target'])
    when @account.featured_collection_url
      case @object['type']
      when 'Hashtag'
        remove_featured_tags
      else
        remove_featured
      end
    when @account.collections_url
      remove_collection
    else
      @collection = @account.collections.find_by(uri: @json['target'])

      remove_collection_item if @collection
    end
  end

  private

  def remove_featured
    status = status_from_uri(object_uri)

    return unless !status.nil? && status.account_id == @account.id

    pin = StatusPin.find_by(account: @account, status: status)
    pin&.destroy!
  end

  def remove_featured_tags
    name = @object['name']&.delete_prefix('#')

    return if name.blank?

    featured_tag = FeaturedTag.by_name(name).find_by(account: @account)
    featured_tag&.destroy!
  end

  def remove_collection
    collection = @account.collections.find_by(uri: value_or_id(@object))

    collection&.destroy!
  end

  def remove_collection_item
    collection_item = @collection.collection_items.find_by(uri: value_or_id(@object))

    collection_item&.destroy!
  end
end