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85 lines
2.4 KiB
Ruby
85 lines
2.4 KiB
Ruby
# frozen_string_literal: true
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require "fileutils"
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require "securerandom"
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require "zip/filesystem"
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# require all data export use cases via Zeitwerk
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# rubocop:disable Lint/Void
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UseCase::DataExport::Answers
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UseCase::DataExport::Appendables
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UseCase::DataExport::Comments
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UseCase::DataExport::MuteRules
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UseCase::DataExport::Questions
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UseCase::DataExport::Relationships
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UseCase::DataExport::Theme
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UseCase::DataExport::User
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# rubocop:enable all
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# the justask data exporter, now with 200% less shelling out to system tools!
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#
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# the data export can be easily extended by subclassing `UseCase::DataExport::Base`
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# and letting Zeitwerk know about the subclasses above
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class Exporter
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def initialize(user)
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@user = user
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@export_name = "export-#{@user.id}-#{SecureRandom.base36(32)}"
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FileUtils.mkdir_p(Rails.public_path.join("export")) # ensure the public export path exists
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export_zipfile_path = Rails.public_path.join("export", "#{@export_name}.zip")
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@zipfile = Zip::File.open(export_zipfile_path, Zip::File::CREATE)
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end
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def export
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@user.export_processing = true
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@user.save validate: false
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prepare_zipfile
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write_files
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publish
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rescue => e
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Sentry.capture_exception(e)
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@user.export_processing = false
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@user.save validate: false
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# delete zipfile on errors
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@zipfile.close # so it gets written to disk first
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File.delete(@zipfile.name)
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raise # let e.g. the sidekiq job fail so it's retryable later
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ensure
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@zipfile.close
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end
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private
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# creates some directories we want to exist and sets a nice comment
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def prepare_zipfile
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@zipfile.mkdir(@export_name)
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@zipfile.mkdir("#{@export_name}/pictures")
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@zipfile.comment = <<~COMMENT
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#{APP_CONFIG.fetch(:site_name)} export done for #{@user.screen_name} on #{Time.now.utc.iso8601}
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COMMENT
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end
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# writes the files to the zip file
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def write_files
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UseCase::DataExport::Base.descendants.each do |export_klass|
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export_klass.call(user: @user).each do |file_name, contents|
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@zipfile.file.open("#{@export_name}/#{file_name}", "wb".dup) do |file| # .dup because of %(can't modify frozen String: "wb")
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file.write contents
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end
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end
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end
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end
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def publish
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url = "#{APP_CONFIG['https'] ? 'https' : 'http'}://#{APP_CONFIG['hostname']}/export/#{@export_name}.zip"
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@user.export_processing = false
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@user.export_url = url
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@user.export_created_at = Time.now.utc
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@user.save validate: false
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url
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end
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end
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