discourse/app/jobs/regular/backup_chunks_merger.rb

# frozen_string_literal: true

module Jobs
  class BackupChunksMerger < ::Jobs::Base
    sidekiq_options queue: "critical", retry: false

    def execute(args)
      filename = args[:filename]
      identifier = args[:identifier]
      chunks = args[:chunks].to_i

      raise Discourse::InvalidParameters.new(:filename) if filename.blank?
      raise Discourse::InvalidParameters.new(:identifier) if identifier.blank?
      raise Discourse::InvalidParameters.new(:chunks) if chunks <= 0

      backup_path = "#{BackupRestore::LocalBackupStore.base_directory}/#{filename}"
      tmp_backup_path = "#{backup_path}.tmp"
      # path to tmp directory
      tmp_directory =
        File.dirname(BackupRestore::LocalBackupStore.chunk_path(identifier, filename, 0))

      # merge all chunks
      HandleChunkUpload.merge_chunks(
        chunks,
        upload_path: backup_path,
        tmp_upload_path: tmp_backup_path,
        identifier: identifier,
        filename: filename,
        tmp_directory: tmp_directory,
      )

      # push an updated list to the clients
      store = BackupRestore::BackupStore.create
      data =
        ActiveModel::ArraySerializer.new(store.files, each_serializer: BackupFileSerializer).as_json
      MessageBus.publish("/admin/backups", data, group_ids: [Group::AUTO_GROUPS[:staff]])
    end
  end
end