path: root/lib/tasks/mastodon.rake

# frozen_string_literal: true

require 'optparse'
require 'colorize'

namespace :mastodon do
  desc 'Execute daily tasks (deprecated)'
  task :daily do
    # No-op
    # All of these tasks are now executed via sidekiq-scheduler
  end

  desc 'Turn a user into an admin, identified by the USERNAME environment variable'
  task make_admin: :environment do
    include RoutingHelper

    account_username = ENV.fetch('USERNAME')
    user             = User.joins(:account).where(accounts: { username: account_username })

    if user.present?
      user.update(admin: true)
      puts "Congrats! #{account_username} is now an admin. \\o/\nNavigate to #{edit_admin_settings_url} to get started"
    else
      puts "User could not be found; please make sure an account with the `#{account_username}` username exists."
    end
  end

  desc 'Turn a user into a moderator, identified by the USERNAME environment variable'
  task make_mod: :environment do
    account_username = ENV.fetch('USERNAME')
    user             = User.joins(:account).where(accounts: { username: account_username })

    if user.present?
      user.update(moderator: true)
      puts "Congrats! #{account_username} is now a moderator \\o/"
    else
      puts "User could not be found; please make sure an account with the `#{account_username}` username exists."
    end
  end

  desc 'Remove admin and moderator privileges from user identified by the USERNAME environment variable'
  task revoke_staff: :environment do
    account_username = ENV.fetch('USERNAME')
    user             = User.joins(:account).where(accounts: { username: account_username })

    if user.present?
      user.update(moderator: false, admin: false)
      puts "#{account_username} is no longer admin or moderator."
    else
      puts "User could not be found; please make sure an account with the `#{account_username}` username exists."
    end
  end

  desc 'Manually confirms a user with associated user email address stored in USER_EMAIL environment variable.'
  task confirm_email: :environment do
    email = ENV.fetch('USER_EMAIL')
    user  = User.find_by(email: email)

    if user
      user.update(confirmed_at: Time.now.utc)
      puts "#{email} confirmed"
    else
      abort "#{email} not found"
    end
  end

  desc 'Add a user by providing their email, username and initial password.' \
       'The user will receive a confirmation email, then they must reset their password before logging in.'
  task add_user: :environment do
    print 'Enter email: '
    email = STDIN.gets.chomp

    print 'Enter username: '
    username = STDIN.gets.chomp

    print 'Create user and send them confirmation mail [y/N]: '
    confirm = STDIN.gets.chomp
    puts

    if confirm.casecmp('y').zero?
      password = SecureRandom.hex
      user = User.new(email: email, password: password, account_attributes: { username: username })
      if user.save
        puts 'User added and confirmation mail sent to user\'s email address.'
        puts "Here is the random password generated for the user: #{password}"
      else
        puts 'Following errors occured while creating new user:'
        user.errors.each do |key, val|
          puts "#{key}: #{val}"
        end
      end
    else
      puts 'Aborted by user.'
    end
    puts
  end

  namespace :media do
    desc 'Removes media attachments that have not been assigned to any status for longer than a day (deprecated)'
    task clear: :environment do
      # No-op
      # This task is now executed via sidekiq-scheduler
    end

    desc 'Remove media attachments attributed to silenced accounts'
    task remove_silenced: :environment do
      MediaAttachment.where(account: Account.silenced).find_each(&:destroy)
    end

    desc 'Remove cached remote media attachments that are older than NUM_DAYS. By default 7 (week)'
    task remove_remote: :environment do
      time_ago = ENV.fetch('NUM_DAYS') { 7 }.to_i.days.ago

      MediaAttachment.where.not(remote_url: '').where.not(file_file_name: nil).where('created_at < ?', time_ago).find_each do |media|
        media.file.destroy
        media.save
      end
    end

    desc 'Set unknown attachment type for remote-only attachments'
    task set_unknown: :environment do
      puts 'Setting unknown attachment type for remote-only attachments...'
      MediaAttachment.where(file_file_name: nil).where.not(type: :unknown).in_batches.update_all(type: :unknown)
      puts 'Done!'
    end

    desc 'Redownload avatars/headers of remote users. Optionally limit to a particular domain with DOMAIN'
    task redownload_avatars: :environment do
      accounts = Account.remote
      accounts = accounts.where(domain: ENV['DOMAIN']) if ENV['DOMAIN'].present?

      accounts.find_each do |account|
        account.reset_avatar!
        account.reset_header!
        account.save
      end
    end
  end

  namespace :push do
    desc 'Unsubscribes from PuSH updates of feeds nobody follows locally'
    task clear: :environment do
      Pubsubhubbub::UnsubscribeWorker.push_bulk(Account.remote.without_followers.where.not(subscription_expires_at: nil).pluck(:id))
    end

    desc 'Re-subscribes to soon expiring PuSH subscriptions (deprecated)'
    task refresh: :environment do
      # No-op
      # This task is now executed via sidekiq-scheduler
    end
  end

  namespace :feeds do
    desc 'Clear timelines of inactive users (deprecated)'
    task clear: :environment do
      # No-op
      # This task is now executed via sidekiq-scheduler
    end

    desc 'Clear all timelines without regenerating them'
    task clear_all: :environment do
      Redis.current.keys('feed:*').each { |key| Redis.current.del(key) }
    end

    desc 'Generates home timelines for users who logged in in the past two weeks'
    task build: :environment do
      User.active.includes(:account).find_each do |u|
        PrecomputeFeedService.new.call(u.account)
      end
    end
  end

  namespace :emails do
    desc 'Send out digest e-mails'
    task digest: :environment do
      User.confirmed.joins(:account).where(accounts: { silenced: false, suspended: false }).where('current_sign_in_at < ?', 20.days.ago).find_each do |user|
        DigestMailerWorker.perform_async(user.id)
      end
    end
  end

  namespace :users do
    desc 'Clear out unconfirmed users (deprecated)'
    task clear: :environment do
      # No-op
      # This task is now executed via sidekiq-scheduler
    end

    desc 'List e-mails of all admin users'
    task admins: :environment do
      puts 'Admin user emails:'
      puts User.admins.map(&:email).join("\n")
    end
  end

  namespace :settings do
    desc 'Open registrations on this instance'
    task open_registrations: :environment do
      Setting.open_registrations = true
    end

    desc 'Close registrations on this instance'
    task close_registrations: :environment do
      Setting.open_registrations = false
    end
  end

  namespace :webpush do
    desc 'Generate VAPID key'
    task generate_vapid_key: :environment do
      vapid_key = Webpush.generate_key
      puts "VAPID_PRIVATE_KEY=#{vapid_key.private_key}"
      puts "VAPID_PUBLIC_KEY=#{vapid_key.public_key}"
    end
  end

  namespace :maintenance do
    desc 'Update counter caches'
    task update_counter_caches: :environment do
      puts 'Updating counter caches for accounts...'

      Account.unscoped.where.not(protocol: :activitypub).select('id').find_in_batches do |batch|
        Account.where(id: batch.map(&:id)).update_all('statuses_count = (select count(*) from statuses where account_id = accounts.id), followers_count = (select count(*) from follows where target_account_id = accounts.id), following_count = (select count(*) from follows where account_id = accounts.id)')
      end

      puts 'Updating counter caches for statuses...'

      Status.unscoped.select('id').find_in_batches do |batch|
        Status.where(id: batch.map(&:id)).update_all('favourites_count = (select count(*) from favourites where favourites.status_id = statuses.id), reblogs_count = (select count(*) from statuses as reblogs where reblogs.reblog_of_id = statuses.id)')
      end

      puts 'Done!'
    end

    desc 'Generate static versions of GIF avatars/headers'
    task add_static_avatars: :environment do
      puts 'Generating static avatars/headers for GIF ones...'

      Account.unscoped.where(avatar_content_type: 'image/gif').or(Account.unscoped.where(header_content_type: 'image/gif')).find_each do |account|
        begin
          account.avatar.reprocess! if account.avatar_content_type == 'image/gif' && !account.avatar.exists?(:static)
          account.header.reprocess! if account.header_content_type == 'image/gif' && !account.header.exists?(:static)
        rescue StandardError => e
          Rails.logger.error "Error while generating static avatars/headers for account #{account.id}: #{e}"
          next
        end
      end

      puts 'Done!'
    end

    desc 'Ensure referencial integrity'
    task prepare_for_foreign_keys: :environment do
      # All the deletes:
      ActiveRecord::Base.connection.execute('DELETE FROM statuses USING statuses s LEFT JOIN accounts a ON a.id = s.account_id WHERE statuses.id = s.id AND a.id IS NULL')

      if ActiveRecord::Base.connection.table_exists? :account_domain_blocks
        ActiveRecord::Base.connection.execute('DELETE FROM account_domain_blocks USING account_domain_blocks adb LEFT JOIN accounts a ON a.id = adb.account_id WHERE account_domain_blocks.id = adb.id AND a.id IS NULL')
      end

      if ActiveRecord::Base.connection.table_exists? :conversation_mutes
        ActiveRecord::Base.connection.execute('DELETE FROM conversation_mutes USING conversation_mutes cm LEFT JOIN accounts a ON a.id = cm.account_id WHERE conversation_mutes.id = cm.id AND a.id IS NULL')
        ActiveRecord::Base.connection.execute('DELETE FROM conversation_mutes USING conversation_mutes cm LEFT JOIN conversations c ON c.id = cm.conversation_id WHERE conversation_mutes.id = cm.id AND c.id IS NULL')
      end

      ActiveRecord::Base.connection.execute('DELETE FROM favourites USING favourites f LEFT JOIN accounts a ON a.id = f.account_id WHERE favourites.id = f.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM favourites USING favourites f LEFT JOIN statuses s ON s.id = f.status_id WHERE favourites.id = f.id AND s.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM blocks USING blocks b LEFT JOIN accounts a ON a.id = b.account_id WHERE blocks.id = b.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM blocks USING blocks b LEFT JOIN accounts a ON a.id = b.target_account_id WHERE blocks.id = b.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM follow_requests USING follow_requests fr LEFT JOIN accounts a ON a.id = fr.account_id WHERE follow_requests.id = fr.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM follow_requests USING follow_requests fr LEFT JOIN accounts a ON a.id = fr.target_account_id WHERE follow_requests.id = fr.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM follows USING follows f LEFT JOIN accounts a ON a.id = f.account_id WHERE follows.id = f.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM follows USING follows f LEFT JOIN accounts a ON a.id = f.target_account_id WHERE follows.id = f.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM mutes USING mutes m LEFT JOIN accounts a ON a.id = m.account_id WHERE mutes.id = m.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM mutes USING mutes m LEFT JOIN accounts a ON a.id = m.target_account_id WHERE mutes.id = m.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM imports USING imports i LEFT JOIN accounts a ON a.id = i.account_id WHERE imports.id = i.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM mentions USING mentions m LEFT JOIN accounts a ON a.id = m.account_id WHERE mentions.id = m.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM mentions USING mentions m LEFT JOIN statuses s ON s.id = m.status_id WHERE mentions.id = m.id AND s.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM notifications USING notifications n LEFT JOIN accounts a ON a.id = n.account_id WHERE notifications.id = n.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM notifications USING notifications n LEFT JOIN accounts a ON a.id = n.from_account_id WHERE notifications.id = n.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM preview_cards USING preview_cards pc LEFT JOIN statuses s ON s.id = pc.status_id WHERE preview_cards.id = pc.id AND s.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM reports USING reports r LEFT JOIN accounts a ON a.id = r.account_id WHERE reports.id = r.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM reports USING reports r LEFT JOIN accounts a ON a.id = r.target_account_id WHERE reports.id = r.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM statuses_tags USING statuses_tags st LEFT JOIN statuses s ON s.id = st.status_id WHERE statuses_tags.tag_id = st.tag_id AND statuses_tags.status_id = st.status_id AND s.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM statuses_tags USING statuses_tags st LEFT JOIN tags t ON t.id = st.tag_id WHERE statuses_tags.tag_id = st.tag_id AND statuses_tags.status_id = st.status_id AND t.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM stream_entries USING stream_entries se LEFT JOIN accounts a ON a.id = se.account_id WHERE stream_entries.id = se.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM subscriptions USING subscriptions s LEFT JOIN accounts a ON a.id = s.account_id WHERE subscriptions.id = s.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM users USING users u LEFT JOIN accounts a ON a.id = u.account_id WHERE users.id = u.id AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM web_settings USING web_settings ws LEFT JOIN users u ON u.id = ws.user_id WHERE web_settings.id = ws.id AND u.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM oauth_access_grants USING oauth_access_grants oag LEFT JOIN users u ON u.id = oag.resource_owner_id WHERE oauth_access_grants.id = oag.id AND oag.resource_owner_id IS NOT NULL AND u.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM oauth_access_grants USING oauth_access_grants oag LEFT JOIN oauth_applications a ON a.id = oag.application_id WHERE oauth_access_grants.id = oag.id AND oag.application_id IS NOT NULL AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM oauth_access_tokens USING oauth_access_tokens oat LEFT JOIN users u ON u.id = oat.resource_owner_id WHERE oauth_access_tokens.id = oat.id AND oat.resource_owner_id IS NOT NULL AND u.id IS NULL')
      ActiveRecord::Base.connection.execute('DELETE FROM oauth_access_tokens USING oauth_access_tokens oat LEFT JOIN oauth_applications a ON a.id = oat.application_id WHERE oauth_access_tokens.id = oat.id AND oat.application_id IS NOT NULL AND a.id IS NULL')

      # All the nullifies:
      ActiveRecord::Base.connection.execute('UPDATE statuses SET in_reply_to_id = NULL FROM statuses s LEFT JOIN statuses rs ON rs.id = s.in_reply_to_id WHERE statuses.id = s.id AND s.in_reply_to_id IS NOT NULL AND rs.id IS NULL')
      ActiveRecord::Base.connection.execute('UPDATE statuses SET in_reply_to_account_id = NULL FROM statuses s LEFT JOIN accounts a ON a.id = s.in_reply_to_account_id WHERE statuses.id = s.id AND s.in_reply_to_account_id IS NOT NULL AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('UPDATE media_attachments SET status_id = NULL FROM media_attachments ma LEFT JOIN statuses s ON s.id = ma.status_id WHERE media_attachments.id = ma.id AND ma.status_id IS NOT NULL AND s.id IS NULL')
      ActiveRecord::Base.connection.execute('UPDATE media_attachments SET account_id = NULL FROM media_attachments ma LEFT JOIN accounts a ON a.id = ma.account_id WHERE media_attachments.id = ma.id AND ma.account_id IS NOT NULL AND a.id IS NULL')
      ActiveRecord::Base.connection.execute('UPDATE reports SET action_taken_by_account_id = NULL FROM reports r LEFT JOIN accounts a ON a.id = r.action_taken_by_account_id WHERE reports.id = r.id AND r.action_taken_by_account_id IS NOT NULL AND a.id IS NULL')
    end

    desc 'Remove deprecated preview cards'
    task remove_deprecated_preview_cards: :environment do
      next unless ActiveRecord::Base.connection.table_exists? 'deprecated_preview_cards'

      class DeprecatedPreviewCard < ActiveRecord::Base
        self.inheritance_column = false

        path = '/preview_cards/:attachment/:id_partition/:style/:filename'
        if ENV['S3_ENABLED'] != 'true'
          path = (ENV['PAPERCLIP_ROOT_PATH'] || ':rails_root/public/system') + path
        end

        has_attached_file :image, styles: { original: '280x120>' }, convert_options: { all: '-quality 80 -strip' }, path: path
      end

      puts 'Delete records and associated files from deprecated preview cards? [y/N]: '
      confirm = STDIN.gets.chomp

      if confirm.casecmp('y').zero?
        DeprecatedPreviewCard.in_batches.destroy_all

        puts 'Drop deprecated preview cards table? [y/N]: '
        confirm = STDIN.gets.chomp

        if confirm.casecmp('y').zero?
          ActiveRecord::Migration.drop_table :deprecated_preview_cards
        end
      end
    end

    desc 'Migrate photo preview cards made before 2.1'
    task migrate_photo_preview_cards: :environment do
      status_ids = Status.joins(:preview_cards)
                         .where(preview_cards: { embed_url: '', type: :photo })
                         .reorder(nil)
                         .group(:id)
                         .pluck(:id)

      PreviewCard.where(embed_url: '', type: :photo).delete_all
      LinkCrawlWorker.push_bulk status_ids
    end

    desc 'Check every known remote account and delete those that no longer exist in origin'
    task purge_removed_accounts: :environment do
      prepare_for_options!

      options = {}

      OptionParser.new do |opts|
        opts.banner = 'Usage: rails mastodon:maintenance:purge_removed_accounts [options]'

        opts.on('-f', '--force', 'Remove all encountered accounts without asking for confirmation') do
          options[:force] = true
        end

        opts.on('-h', '--help', 'Display this message') do
          puts opts
          exit
        end
      end.parse!

      disable_log_stdout!

      total        = Account.remote.where(protocol: :activitypub).count
      progress_bar = ProgressBar.create(total: total, format: '%c/%C |%w>%i| %e')

      Account.remote.where(protocol: :activitypub).partitioned.find_each do |account|
        progress_bar.increment

        begin
          res = Request.new(:head, account.uri).perform
        rescue StandardError
          # This could happen due to network timeout, DNS timeout, wrong SSL cert, etc,
          # which should probably not lead to perceiving the account as deleted, so
          # just skip till next time
          next
        end

        if [404, 410].include?(res.code)
          if options[:force]
            account.destroy
          else
            progress_bar.pause
            progress_bar.clear
            print "\nIt seems like #{account.acct} no longer exists. Purge the account from the database? [Y/n]: ".colorize(:yellow)
            confirm = STDIN.gets.chomp
            puts ''
            progress_bar.resume

            if confirm.casecmp('n').zero?
              next
            else
              account.destroy
            end
          end
        end
      end
    end
  end
end

def disable_log_stdout!
  dev_null = Logger.new('/dev/null')

  Rails.logger                 = dev_null
  ActiveRecord::Base.logger    = dev_null
  HttpLog.configuration.logger = dev_null
  Paperclip.options[:log]      = false
end

def prepare_for_options!
  2.times { ARGV.shift }
end