mastodon/app/models/export.rb

# frozen_string_literal: true

require 'csv'

class Export
  attr_reader :account

  def initialize(account)
    @account = account
  end

  def to_bookmarks_csv
    CSV.generate do |csv|
      account.bookmarks.includes(:status).reorder(id: :desc).each do |bookmark|
        csv << [ActivityPub::TagManager.instance.uri_for(bookmark.status)] if bookmark.status.present?
      end
    end
  end

  def to_blocked_accounts_csv
    to_csv account.blocking.select(:username, :domain)
  end

  def to_muted_accounts_csv
    CSV.generate(headers: ['Account address', 'Hide notifications'], write_headers: true) do |csv|
      account.mute_relationships.includes(:target_account).reorder(id: :desc).each do |mute|
        csv << [acct(mute.target_account), mute.hide_notifications]
      end
    end
  end

  def to_following_accounts_csv
    CSV.generate(headers: ['Account address', 'Show boosts', 'Notify on new posts', 'Languages'], write_headers: true) do |csv|
      account.active_relationships.includes(:target_account).reorder(id: :desc).each do |follow|
        csv << [acct(follow.target_account), follow.show_reblogs, follow.notify, follow.languages&.join(', ')]
      end
    end
  end

  def to_lists_csv
    CSV.generate do |csv|
      account.owned_lists.select(:title, :id).each do |list|
        list.accounts.select(:username, :domain).each do |account|
          csv << [list.title, acct(account)]
        end
      end
    end
  end

  def to_blocked_domains_csv
    CSV.generate do |csv|
      account.domain_blocks.pluck(:domain).each do |domain|
        csv << [domain]
      end
    end
  end

  def to_custom_filters_json
    data_collection = { custom_filters: [] }
    account.custom_filters.includes(:keywords, :statuses).order(:phrase).each do |filter|
      keywords_attributes = filter.keywords.map { |k| { keyword: k.keyword, whole_word: k.whole_word } }

      data_collection[:custom_filters] << {
        title: filter.title,
        expires_at: filter.expires_at,
        context: filter.context,
        action: filter.action,
        keywords_attributes: keywords_attributes,
        statuses: filter.statuses.map { |s| ActivityPub::TagManager.instance.uri_for(s.status) },
      }
    end
    JSON.generate(data_collection)
  end

  private

  def to_csv(accounts)
    CSV.generate do |csv|
      accounts.each do |account|
        csv << [acct(account)]
      end
    end
  end

  def acct(account)
    account.local? ? account.local_username_and_domain : account.acct
  end
end