require 'active_record/fixtures'

namespace :gitlab do
  namespace :backup do
    # Create backup of GitLab system
    desc "GitLab | Create a backup of the GitLab system"
    task create: :gitlab_environment do
      warn_user_is_not_gitlab

      Rake::Task["gitlab:backup:db:create"].invoke
      Rake::Task["gitlab:backup:repo:create"].invoke
      Rake::Task["gitlab:backup:uploads:create"].invoke
      Rake::Task["gitlab:backup:builds:create"].invoke
      Rake::Task["gitlab:backup:artifacts:create"].invoke
      Rake::Task["gitlab:backup:pages:create"].invoke
      Rake::Task["gitlab:backup:lfs:create"].invoke
      Rake::Task["gitlab:backup:registry:create"].invoke

      backup = Backup::Manager.new(progress)
      backup.pack
      backup.cleanup
      backup.remove_old

      progress.puts "Warning: Your gitlab.rb and gitlab-secrets.json files contain sensitive data \n" \
           "and are not included in this backup. You will need these files to restore a backup.\n" \
           "Please back them up manually.".color(:red)
      progress.puts "Backup task is done."
    end

    # Restore backup of GitLab system
    desc 'GitLab | Restore a previously created backup'
    task restore: :gitlab_environment do
      warn_user_is_not_gitlab

      backup = Backup::Manager.new(progress)
      backup.unpack

      unless backup.skipped?('db')
        begin
          unless ENV['force'] == 'yes'
            warning = <<-MSG.strip_heredoc
              Before restoring the database, we will remove all existing
              tables to avoid future upgrade problems. Be aware that if you have
              custom tables in the GitLab database these tables and all data will be
              removed.
            MSG
            puts warning.color(:red)
            ask_to_continue
            puts 'Removing all tables. Press `Ctrl-C` within 5 seconds to abort'.color(:yellow)
            sleep(5)
          end

          # Drop all tables Load the schema to ensure we don't have any newer tables
          # hanging out from a failed upgrade
          puts_time 'Cleaning the database ... '.color(:blue)
          Rake::Task['gitlab:db:drop_tables'].invoke
          puts_time 'done'.color(:green)
          Rake::Task['gitlab:backup:db:restore'].invoke
        rescue Gitlab::TaskAbortedByUserError
          puts "Quitting...".color(:red)
          exit 1
        end
      end

      Rake::Task['gitlab:backup:repo:restore'].invoke unless backup.skipped?('repositories')
      Rake::Task['gitlab:backup:uploads:restore'].invoke unless backup.skipped?('uploads')
      Rake::Task['gitlab:backup:builds:restore'].invoke unless backup.skipped?('builds')
      Rake::Task['gitlab:backup:artifacts:restore'].invoke unless backup.skipped?('artifacts')
      Rake::Task['gitlab:backup:pages:restore'].invoke unless backup.skipped?('pages')
      Rake::Task['gitlab:backup:lfs:restore'].invoke unless backup.skipped?('lfs')
      Rake::Task['gitlab:backup:registry:restore'].invoke unless backup.skipped?('registry')
      Rake::Task['gitlab:shell:setup'].invoke
      Rake::Task['cache:clear'].invoke

      backup.cleanup
      puts "Warning: Your gitlab.rb and gitlab-secrets.json files contain sensitive data \n" \
           "and are not included in this backup. You will need to restore these files manually.".color(:red)
      puts "Restore task is done."
    end

    namespace :repo do
      task create: :gitlab_environment do
        puts_time "Dumping repositories ...".color(:blue)

        if ENV["SKIP"] && ENV["SKIP"].include?("repositories")
          puts_time "[SKIPPED]".color(:cyan)
        else
          Backup::Repository.new(progress).dump
          puts_time "done".color(:green)
        end
      end

      task restore: :gitlab_environment do
        puts_time "Restoring repositories ...".color(:blue)
        Backup::Repository.new(progress).restore
        puts_time "done".color(:green)
      end
    end

    namespace :db do
      task create: :gitlab_environment do
        puts_time "Dumping database ... ".color(:blue)

        if ENV["SKIP"] && ENV["SKIP"].include?("db")
          puts_time "[SKIPPED]".color(:cyan)
        else
          Backup::Database.new(progress).dump
          puts_time "done".color(:green)
        end
      end

      task restore: :gitlab_environment do
        puts_time "Restoring database ... ".color(:blue)
        Backup::Database.new(progress).restore
        puts_time "done".color(:green)
      end
    end

    namespace :builds do
      task create: :gitlab_environment do
        puts_time "Dumping builds ... ".color(:blue)

        if ENV["SKIP"] && ENV["SKIP"].include?("builds")
          puts_time "[SKIPPED]".color(:cyan)
        else
          Backup::Builds.new(progress).dump
          puts_time "done".color(:green)
        end
      end

      task restore: :gitlab_environment do
        puts_time "Restoring builds ... ".color(:blue)
        Backup::Builds.new(progress).restore
        puts_time "done".color(:green)
      end
    end

    namespace :uploads do
      task create: :gitlab_environment do
        puts_time "Dumping uploads ... ".color(:blue)

        if ENV["SKIP"] && ENV["SKIP"].include?("uploads")
          puts_time "[SKIPPED]".color(:cyan)
        else
          Backup::Uploads.new(progress).dump
          puts_time "done".color(:green)
        end
      end

      task restore: :gitlab_environment do
        puts_time "Restoring uploads ... ".color(:blue)
        Backup::Uploads.new(progress).restore
        puts_time "done".color(:green)
      end
    end

    namespace :artifacts do
      task create: :gitlab_environment do
        puts_time "Dumping artifacts ... ".color(:blue)

        if ENV["SKIP"] && ENV["SKIP"].include?("artifacts")
          puts_time "[SKIPPED]".color(:cyan)
        else
          Backup::Artifacts.new(progress).dump
          puts_time "done".color(:green)
        end
      end

      task restore: :gitlab_environment do
        puts_time "Restoring artifacts ... ".color(:blue)
        Backup::Artifacts.new(progress).restore
        puts_time "done".color(:green)
      end
    end

    namespace :pages do
      task create: :gitlab_environment do
        puts_time "Dumping pages ... ".color(:blue)

        if ENV["SKIP"] && ENV["SKIP"].include?("pages")
          puts_time "[SKIPPED]".color(:cyan)
        else
          Backup::Pages.new(progress).dump
          puts_time "done".color(:green)
        end
      end

      task restore: :gitlab_environment do
        puts_time "Restoring pages ... ".color(:blue)
        Backup::Pages.new(progress).restore
        puts_time "done".color(:green)
      end
    end

    namespace :lfs do
      task create: :gitlab_environment do
        puts_time "Dumping lfs objects ... ".color(:blue)

        if ENV["SKIP"] && ENV["SKIP"].include?("lfs")
          puts_time "[SKIPPED]".color(:cyan)
        else
          Backup::Lfs.new(progress).dump
          puts_time "done".color(:green)
        end
      end

      task restore: :gitlab_environment do
        puts_time "Restoring lfs objects ... ".color(:blue)
        Backup::Lfs.new(progress).restore
        puts_time "done".color(:green)
      end
    end

    namespace :registry do
      task create: :gitlab_environment do
        puts_time "Dumping container registry images ... ".color(:blue)

        if Gitlab.config.registry.enabled
          if ENV["SKIP"] && ENV["SKIP"].include?("registry")
            puts_time "[SKIPPED]".color(:cyan)
          else
            Backup::Registry.new(progress).dump
            puts_time "done".color(:green)
          end
        else
          puts_time "[DISABLED]".color(:cyan)
        end
      end

      task restore: :gitlab_environment do
        puts_time "Restoring container registry images ... ".color(:blue)

        if Gitlab.config.registry.enabled
          Backup::Registry.new(progress).restore
          puts_time "done".color(:green)
        else
          puts_time "[DISABLED]".color(:cyan)
        end
      end
    end

    def puts_time(msg)
      progress.puts "#{Time.now} -- #{msg}"
    end

    def progress
      if ENV['CRON']
        # We need an object we can say 'puts' and 'print' to; let's use a
        # StringIO.
        require 'stringio'
        StringIO.new
      else
        $stdout
      end
    end
  end # namespace end: backup
end # namespace end: gitlab
