namespace :gitlab do
  desc "GitLab | Check the configuration of GitLab and its environment"
  task check: %w{gitlab:gitlab_shell:check
                 gitlab:sidekiq:check
                 gitlab:incoming_email:check
                 gitlab:ldap:check
                 gitlab:app:check}

  namespace :app do
    desc "GitLab | Check the configuration of the GitLab Rails app"
    task check: :environment  do
      warn_user_is_not_gitlab
      start_checking "GitLab"

      check_git_config
      check_database_config_exists
      check_migrations_are_up
      check_orphaned_group_members
      check_gitlab_config_exists
      check_gitlab_config_not_outdated
      check_log_writable
      check_tmp_writable
      check_uploads
      check_init_script_exists
      check_init_script_up_to_date
      check_projects_have_namespace
      check_redis_version
      check_ruby_version
      check_git_version
      check_active_users

      finished_checking "GitLab"
    end

    # Checks
    ########################

    def check_git_config
      print "Git configured with autocrlf=input? ... "

      options = {
        "core.autocrlf" => "input"
      }

      correct_options = options.map do |name, value|
        run_command(%W(#{Gitlab.config.git.bin_path} config --global --get #{name})).try(:squish) == value
      end

      if correct_options.all?
        puts "yes".color(:green)
      else
        print "Trying to fix Git error automatically. ..."

        if auto_fix_git_config(options)
          puts "Success".color(:green)
        else
          puts "Failed".color(:red)
          try_fixing_it(
            sudo_gitlab("\"#{Gitlab.config.git.bin_path}\" config --global core.autocrlf \"#{options["core.autocrlf"]}\"")
          )
          for_more_information(
            see_installation_guide_section "GitLab"
          )
        end
      end
    end

    def check_database_config_exists
      print "Database config exists? ... "

      database_config_file = Rails.root.join("config", "database.yml")

      if File.exist?(database_config_file)
        puts "yes".color(:green)
      else
        puts "no".color(:red)
        try_fixing_it(
          "Copy config/database.yml.<your db> to config/database.yml",
          "Check that the information in config/database.yml is correct"
        )
        for_more_information(
          see_database_guide,
          "http://guides.rubyonrails.org/getting_started.html#configuring-a-database"
        )
        fix_and_rerun
      end
    end

    def check_gitlab_config_exists
      print "GitLab config exists? ... "

      gitlab_config_file = Rails.root.join("config", "gitlab.yml")

      if File.exist?(gitlab_config_file)
        puts "yes".color(:green)
      else
        puts "no".color(:red)
        try_fixing_it(
          "Copy config/gitlab.yml.example to config/gitlab.yml",
          "Update config/gitlab.yml to match your setup"
        )
        for_more_information(
          see_installation_guide_section "GitLab"
        )
        fix_and_rerun
      end
    end

    def check_gitlab_config_not_outdated
      print "GitLab config outdated? ... "

      gitlab_config_file = Rails.root.join("config", "gitlab.yml")
      unless File.exist?(gitlab_config_file)
        puts "can't check because of previous errors".color(:magenta)
      end

      # omniauth or ldap could have been deleted from the file
      unless Gitlab.config['git_host']
        puts "no".color(:green)
      else
        puts "yes".color(:red)
        try_fixing_it(
          "Backup your config/gitlab.yml",
          "Copy config/gitlab.yml.example to config/gitlab.yml",
          "Update config/gitlab.yml to match your setup"
        )
        for_more_information(
          see_installation_guide_section "GitLab"
        )
        fix_and_rerun
      end
    end

    def check_init_script_exists
      print "Init script exists? ... "

      if omnibus_gitlab?
        puts 'skipped (omnibus-gitlab has no init script)'.color(:magenta)
        return
      end

      script_path = "/etc/init.d/gitlab"

      if File.exist?(script_path)
        puts "yes".color(:green)
      else
        puts "no".color(:red)
        try_fixing_it(
          "Install the init script"
        )
        for_more_information(
          see_installation_guide_section "Install Init Script"
        )
        fix_and_rerun
      end
    end

    def check_init_script_up_to_date
      print "Init script up-to-date? ... "

      if omnibus_gitlab?
        puts 'skipped (omnibus-gitlab has no init script)'.color(:magenta)
        return
      end

      recipe_path = Rails.root.join("lib/support/init.d/", "gitlab")
      script_path = "/etc/init.d/gitlab"

      unless File.exist?(script_path)
        puts "can't check because of previous errors".color(:magenta)
        return
      end

      recipe_content = File.read(recipe_path)
      script_content = File.read(script_path)

      if recipe_content == script_content
        puts "yes".color(:green)
      else
        puts "no".color(:red)
        try_fixing_it(
          "Redownload the init script"
        )
        for_more_information(
          see_installation_guide_section "Install Init Script"
        )
        fix_and_rerun
      end
    end

    def check_migrations_are_up
      print "All migrations up? ... "

      migration_status, _ = Gitlab::Popen.popen(%w(bundle exec rake db:migrate:status))

      unless migration_status =~ /down\s+\d{14}/
        puts "yes".color(:green)
      else
        puts "no".color(:red)
        try_fixing_it(
          sudo_gitlab("bundle exec rake db:migrate RAILS_ENV=production")
        )
        fix_and_rerun
      end
    end

    def check_orphaned_group_members
      print "Database contains orphaned GroupMembers? ... "
      if GroupMember.where("user_id not in (select id from users)").count > 0
        puts "yes".color(:red)
        try_fixing_it(
          "You can delete the orphaned records using something along the lines of:",
          sudo_gitlab("bundle exec rails runner -e production 'GroupMember.where(\"user_id NOT IN (SELECT id FROM users)\").delete_all'")
        )
      else
        puts "no".color(:green)
      end
    end

    def check_log_writable
      print "Log directory writable? ... "

      log_path = Rails.root.join("log")

      if File.writable?(log_path)
        puts "yes".color(:green)
      else
        puts "no".color(:red)
        try_fixing_it(
          "sudo chown -R gitlab #{log_path}",
          "sudo chmod -R u+rwX #{log_path}"
        )
        for_more_information(
          see_installation_guide_section "GitLab"
        )
        fix_and_rerun
      end
    end

    def check_tmp_writable
      print "Tmp directory writable? ... "

      tmp_path = Rails.root.join("tmp")

      if File.writable?(tmp_path)
        puts "yes".color(:green)
      else
        puts "no".color(:red)
        try_fixing_it(
          "sudo chown -R gitlab #{tmp_path}",
          "sudo chmod -R u+rwX #{tmp_path}"
        )
        for_more_information(
          see_installation_guide_section "GitLab"
        )
        fix_and_rerun
      end
    end

    def check_uploads
      print "Uploads directory setup correctly? ... "

      unless File.directory?(Rails.root.join('public/uploads'))
        puts "no".color(:red)
        try_fixing_it(
          "sudo -u #{gitlab_user} mkdir #{Rails.root}/public/uploads"
        )
        for_more_information(
          see_installation_guide_section "GitLab"
        )
        fix_and_rerun
        return
      end

      upload_path = File.realpath(Rails.root.join('public/uploads'))
      upload_path_tmp = File.join(upload_path, 'tmp')

      if File.stat(upload_path).mode == 040700
        unless Dir.exist?(upload_path_tmp)
          puts 'skipped (no tmp uploads folder yet)'.color(:magenta)
          return
        end

        # If tmp upload dir has incorrect permissions, assume others do as well
        # Verify drwx------ permissions
        if File.stat(upload_path_tmp).mode == 040700 && File.owned?(upload_path_tmp)
          puts "yes".color(:green)
        else
          puts "no".color(:red)
          try_fixing_it(
            "sudo chown -R #{gitlab_user} #{upload_path}",
            "sudo find #{upload_path} -type f -exec chmod 0644 {} \\;",
            "sudo find #{upload_path} -type d -not -path #{upload_path} -exec chmod 0700 {} \\;"
          )
          for_more_information(
            see_installation_guide_section "GitLab"
          )
          fix_and_rerun
        end
      else
        puts "no".color(:red)
        try_fixing_it(
          "sudo chmod 700 #{upload_path}"
        )
        for_more_information(
          see_installation_guide_section "GitLab"
        )
        fix_and_rerun
      end
    end

    def check_redis_version
      min_redis_version = "2.8.0"
      print "Redis version >= #{min_redis_version}? ... "

      redis_version = run_command(%w(redis-cli --version))
      redis_version = redis_version.try(:match, /redis-cli (\d+\.\d+\.\d+)/)
      if redis_version &&
          (Gem::Version.new(redis_version[1]) > Gem::Version.new(min_redis_version))
        puts "yes".color(:green)
      else
        puts "no".color(:red)
        try_fixing_it(
          "Update your redis server to a version >= #{min_redis_version}"
        )
        for_more_information(
          "gitlab-public-wiki/wiki/Trouble-Shooting-Guide in section sidekiq"
        )
        fix_and_rerun
      end
    end
  end

  namespace :gitlab_shell do
    desc "GitLab | Check the configuration of GitLab Shell"
    task check: :environment  do
      warn_user_is_not_gitlab
      start_checking "GitLab Shell"

      check_gitlab_shell
      check_repo_base_exists
      check_repo_base_is_not_symlink
      check_repo_base_user_and_group
      check_repo_base_permissions
      check_repos_hooks_directory_is_link
      check_gitlab_shell_self_test

      finished_checking "GitLab Shell"
    end

    # Checks
    ########################

    def check_repo_base_exists
      puts "Repo base directory exists?"

      Gitlab.config.repositories.storages.each do |name, repository_storage|
        repo_base_path = repository_storage['path']
        print "#{name}... "

        if File.exist?(repo_base_path)
          puts "yes".color(:green)
        else
          puts "no".color(:red)
          puts "#{repo_base_path} is missing".color(:red)
          try_fixing_it(
            "This should have been created when setting up GitLab Shell.",
            "Make sure it's set correctly in config/gitlab.yml",
            "Make sure GitLab Shell is installed correctly."
          )
          for_more_information(
            see_installation_guide_section "GitLab Shell"
          )
          fix_and_rerun
        end
      end
    end

    def check_repo_base_is_not_symlink
      puts "Repo storage directories are symlinks?"

      Gitlab.config.repositories.storages.each do |name, repository_storage|
        repo_base_path = repository_storage['path']
        print "#{name}... "

        unless File.exist?(repo_base_path)
          puts "can't check because of previous errors".color(:magenta)
          break
        end

        unless File.symlink?(repo_base_path)
          puts "no".color(:green)
        else
          puts "yes".color(:red)
          try_fixing_it(
            "Make sure it's set to the real directory in config/gitlab.yml"
          )
          fix_and_rerun
        end
      end
    end

    def check_repo_base_permissions
      puts "Repo paths access is drwxrws---?"

      Gitlab.config.repositories.storages.each do |name, repository_storage|
        repo_base_path = repository_storage['path']
        print "#{name}... "

        unless File.exist?(repo_base_path)
          puts "can't check because of previous errors".color(:magenta)
          break
        end

        if File.stat(repo_base_path).mode.to_s(8).ends_with?("2770")
          puts "yes".color(:green)
        else
          puts "no".color(:red)
          try_fixing_it(
            "sudo chmod -R ug+rwX,o-rwx #{repo_base_path}",
            "sudo chmod -R ug-s #{repo_base_path}",
            "sudo find #{repo_base_path} -type d -print0 | sudo xargs -0 chmod g+s"
          )
          for_more_information(
            see_installation_guide_section "GitLab Shell"
          )
          fix_and_rerun
        end
      end
    end

    def check_repo_base_user_and_group
      gitlab_shell_ssh_user = Gitlab.config.gitlab_shell.ssh_user
      gitlab_shell_owner_group = Gitlab.config.gitlab_shell.owner_group
      puts "Repo paths owned by #{gitlab_shell_ssh_user}:#{gitlab_shell_owner_group}?"

      Gitlab.config.repositories.storages.each do |name, repository_storage|
        repo_base_path = repository_storage['path']
        print "#{name}... "

        unless File.exist?(repo_base_path)
          puts "can't check because of previous errors".color(:magenta)
          break
        end

        uid = uid_for(gitlab_shell_ssh_user)
        gid = gid_for(gitlab_shell_owner_group)
        if File.stat(repo_base_path).uid == uid && File.stat(repo_base_path).gid == gid
          puts "yes".color(:green)
        else
          puts "no".color(:red)
          puts "  User id for #{gitlab_shell_ssh_user}: #{uid}. Groupd id for #{gitlab_shell_owner_group}: #{gid}".color(:blue)
          try_fixing_it(
            "sudo chown -R #{gitlab_shell_ssh_user}:#{gitlab_shell_owner_group} #{repo_base_path}"
          )
          for_more_information(
            see_installation_guide_section "GitLab Shell"
          )
          fix_and_rerun
        end
      end
    end

    def check_repos_hooks_directory_is_link
      print "hooks directories in repos are links: ... "

      gitlab_shell_hooks_path = Gitlab.config.gitlab_shell.hooks_path

      unless Project.count > 0
        puts "can't check, you have no projects".color(:magenta)
        return
      end
      puts ""

      Project.find_each(batch_size: 100) do |project|
        print sanitized_message(project)
        project_hook_directory = File.join(project.repository.path_to_repo, "hooks")

        if project.empty_repo?
          puts "repository is empty".color(:magenta)
        elsif File.directory?(project_hook_directory) && File.directory?(gitlab_shell_hooks_path) &&
            (File.realpath(project_hook_directory) == File.realpath(gitlab_shell_hooks_path))
          puts 'ok'.color(:green)
        else
          puts "wrong or missing hooks".color(:red)
          try_fixing_it(
            sudo_gitlab("#{File.join(gitlab_shell_path, 'bin/create-hooks')} #{repository_storage_paths_args.join(' ')}"),
            'Check the hooks_path in config/gitlab.yml',
            'Check your gitlab-shell installation'
          )
          for_more_information(
            see_installation_guide_section "GitLab Shell"
          )
          fix_and_rerun
        end
      end
    end

    def check_gitlab_shell_self_test
      gitlab_shell_repo_base = gitlab_shell_path
      check_cmd = File.expand_path('bin/check', gitlab_shell_repo_base)
      puts "Running #{check_cmd}"
      if system(check_cmd, chdir: gitlab_shell_repo_base)
        puts 'gitlab-shell self-check successful'.color(:green)
      else
        puts 'gitlab-shell self-check failed'.color(:red)
        try_fixing_it(
          'Make sure GitLab is running;',
          'Check the gitlab-shell configuration file:',
          sudo_gitlab("editor #{File.expand_path('config.yml', gitlab_shell_repo_base)}")
        )
        fix_and_rerun
      end
    end

    def check_projects_have_namespace
      print "projects have namespace: ... "

      unless Project.count > 0
        puts "can't check, you have no projects".color(:magenta)
        return
      end
      puts ""

      Project.find_each(batch_size: 100) do |project|
        print sanitized_message(project)

        if project.namespace
          puts "yes".color(:green)
        else
          puts "no".color(:red)
          try_fixing_it(
            "Migrate global projects"
          )
          for_more_information(
            "doc/update/5.4-to-6.0.md in section \"#global-projects\""
          )
          fix_and_rerun
        end
      end
    end

    # Helper methods
    ########################

    def gitlab_shell_path
      Gitlab.config.gitlab_shell.path
    end

    def gitlab_shell_version
      Gitlab::Shell.new.version
    end

    def gitlab_shell_major_version
      Gitlab::Shell.version_required.split('.')[0].to_i
    end

    def gitlab_shell_minor_version
      Gitlab::Shell.version_required.split('.')[1].to_i
    end

    def gitlab_shell_patch_version
      Gitlab::Shell.version_required.split('.')[2].to_i
    end
  end

  namespace :sidekiq do
    desc "GitLab | Check the configuration of Sidekiq"
    task check: :environment  do
      warn_user_is_not_gitlab
      start_checking "Sidekiq"

      check_sidekiq_running
      only_one_sidekiq_running

      finished_checking "Sidekiq"
    end

    # Checks
    ########################

    def check_sidekiq_running
      print "Running? ... "

      if sidekiq_process_count > 0
        puts "yes".color(:green)
      else
        puts "no".color(:red)
        try_fixing_it(
          sudo_gitlab("RAILS_ENV=production bin/background_jobs start")
        )
        for_more_information(
          see_installation_guide_section("Install Init Script"),
          "see log/sidekiq.log for possible errors"
        )
        fix_and_rerun
      end
    end

    def only_one_sidekiq_running
      process_count = sidekiq_process_count
      return if process_count.zero?

      print 'Number of Sidekiq processes ... '
      if process_count == 1
        puts '1'.color(:green)
      else
        puts "#{process_count}".color(:red)
        try_fixing_it(
          'sudo service gitlab stop',
          "sudo pkill -u #{gitlab_user} -f sidekiq",
          "sleep 10 && sudo pkill -9 -u #{gitlab_user} -f sidekiq",
          'sudo service gitlab start'
        )
        fix_and_rerun
      end
    end

    def sidekiq_process_count
      ps_ux, _ = Gitlab::Popen.popen(%w(ps uxww))
      ps_ux.scan(/sidekiq \d+\.\d+\.\d+/).count
    end
  end

  namespace :incoming_email do
    desc "GitLab | Check the configuration of Reply by email"
    task check: :environment  do
      warn_user_is_not_gitlab
      start_checking "Reply by email"

      if Gitlab.config.incoming_email.enabled
        check_imap_authentication

        if Rails.env.production?
          check_initd_configured_correctly
          check_mail_room_running
        else
          check_foreman_configured_correctly
        end
      else
        puts 'Reply by email is disabled in config/gitlab.yml'
      end

      finished_checking "Reply by email"
    end

    # Checks
    ########################

    def check_initd_configured_correctly
      print "Init.d configured correctly? ... "

      if omnibus_gitlab?
        puts 'skipped (omnibus-gitlab has no init script)'.color(:magenta)
        return
      end

      path = "/etc/default/gitlab"

      if File.exist?(path) && File.read(path).include?("mail_room_enabled=true")
        puts "yes".color(:green)
      else
        puts "no".color(:red)
        try_fixing_it(
          "Enable mail_room in the init.d configuration."
        )
        for_more_information(
          "doc/administration/reply_by_email.md"
        )
        fix_and_rerun
      end
    end

    def check_foreman_configured_correctly
      print "Foreman configured correctly? ... "

      path = Rails.root.join("Procfile")

      if File.exist?(path) && File.read(path) =~ /^mail_room:/
        puts "yes".color(:green)
      else
        puts "no".color(:red)
        try_fixing_it(
          "Enable mail_room in your Procfile."
        )
        for_more_information(
          "doc/administration/reply_by_email.md"
        )
        fix_and_rerun
      end
    end

    def check_mail_room_running
      print "MailRoom running? ... "

      path = "/etc/default/gitlab"

      unless File.exist?(path) && File.read(path).include?("mail_room_enabled=true")
        puts "can't check because of previous errors".color(:magenta)
        return
      end

      if mail_room_running?
        puts "yes".color(:green)
      else
        puts "no".color(:red)
        try_fixing_it(
          sudo_gitlab("RAILS_ENV=production bin/mail_room start")
        )
        for_more_information(
          see_installation_guide_section("Install Init Script"),
          "see log/mail_room.log for possible errors"
        )
        fix_and_rerun
      end
    end

    def check_imap_authentication
      print "IMAP server credentials are correct? ... "

      config_path = Rails.root.join('config', 'mail_room.yml').to_s
      erb = ERB.new(File.read(config_path))
      erb.filename = config_path
      config_file = YAML.load(erb.result)

      config = config_file[:mailboxes].first

      if config
        begin
          imap = Net::IMAP.new(config[:host], port: config[:port], ssl: config[:ssl])
          imap.starttls if config[:start_tls]
          imap.login(config[:email], config[:password])
          connected = true
        rescue
          connected = false
        end
      end

      if connected
        puts "yes".color(:green)
      else
        puts "no".color(:red)
        try_fixing_it(
          "Check that the information in config/gitlab.yml is correct"
        )
        for_more_information(
          "doc/administration/reply_by_email.md"
        )
        fix_and_rerun
      end
    end

    def mail_room_running?
      ps_ux, _ = Gitlab::Popen.popen(%w(ps uxww))
      ps_ux.include?("mail_room")
    end
  end

  namespace :ldap do
    task :check, [:limit] => :environment do |_, args|
      # Only show up to 100 results because LDAP directories can be very big.
      # This setting only affects the `rake gitlab:check` script.
      args.with_defaults(limit: 100)
      warn_user_is_not_gitlab
      start_checking "LDAP"

      if Gitlab::LDAP::Config.enabled?
        check_ldap(args.limit)
      else
        puts 'LDAP is disabled in config/gitlab.yml'
      end

      finished_checking "LDAP"
    end

    def check_ldap(limit)
      servers = Gitlab::LDAP::Config.providers

      servers.each do |server|
        puts "Server: #{server}"

        begin
          Gitlab::LDAP::Adapter.open(server) do |adapter|
            check_ldap_auth(adapter)

            puts "LDAP users with access to your GitLab server (only showing the first #{limit} results)"

            users = adapter.users(adapter.config.uid, '*', limit)
            users.each do |user|
              puts "\tDN: #{user.dn}\t #{adapter.config.uid}: #{user.uid}"
            end
          end
        rescue Net::LDAP::ConnectionRefusedError, Errno::ECONNREFUSED => e
          puts "Could not connect to the LDAP server: #{e.message}".color(:red)
        end
      end
    end

    def check_ldap_auth(adapter)
      auth = adapter.config.has_auth?

      message = if auth && adapter.ldap.bind
                  'Success'.color(:green)
                elsif auth
                  'Failed. Check `bind_dn` and `password` configuration values'.color(:red)
                else
                  'Anonymous. No `bind_dn` or `password` configured'.color(:yellow)
                end

      puts "LDAP authentication... #{message}"
    end
  end

  namespace :repo do
    desc "GitLab | Check the integrity of the repositories managed by GitLab"
    task check: :environment do
      Gitlab.config.repositories.storages.each do |name, repository_storage|
        namespace_dirs = Dir.glob(File.join(repository_storage['path'], '*'))

        namespace_dirs.each do |namespace_dir|
          repo_dirs = Dir.glob(File.join(namespace_dir, '*'))
          repo_dirs.each { |repo_dir| check_repo_integrity(repo_dir) }
        end
      end
    end
  end

  namespace :user do
    desc "GitLab | Check the integrity of a specific user's repositories"
    task :check_repos, [:username] => :environment do |t, args|
      username = args[:username] || prompt("Check repository integrity for fsername? ".color(:blue))
      user = User.find_by(username: username)
      if user
        repo_dirs = user.authorized_projects.map do |p|
          File.join(
            p.repository_storage_path,
            "#{p.path_with_namespace}.git"
          )
        end

        repo_dirs.each { |repo_dir| check_repo_integrity(repo_dir) }
      else
        puts "\nUser '#{username}' not found".color(:red)
      end
    end
  end

  # Helper methods
  ##########################

  def fix_and_rerun
    puts "  Please fix the error above and rerun the checks.".color(:red)
  end

  def for_more_information(*sources)
    sources = sources.shift if sources.first.is_a?(Array)

    puts "  For more information see:".color(:blue)
    sources.each do |source|
      puts "  #{source}"
    end
  end

  def finished_checking(component)
    puts ""
    puts "Checking #{component.color(:yellow)} ... #{"Finished".color(:green)}"
    puts ""
  end

  def see_database_guide
    "doc/install/databases.md"
  end

  def see_installation_guide_section(section)
    "doc/install/installation.md in section \"#{section}\""
  end

  def sudo_gitlab(command)
    "sudo -u #{gitlab_user} -H #{command}"
  end

  def gitlab_user
    Gitlab.config.gitlab.user
  end

  def start_checking(component)
    puts "Checking #{component.color(:yellow)} ..."
    puts ""
  end

  def try_fixing_it(*steps)
    steps = steps.shift if steps.first.is_a?(Array)

    puts "  Try fixing it:".color(:blue)
    steps.each do |step|
      puts "  #{step}"
    end
  end

  def check_gitlab_shell
    required_version = Gitlab::VersionInfo.new(gitlab_shell_major_version, gitlab_shell_minor_version, gitlab_shell_patch_version)
    current_version = Gitlab::VersionInfo.parse(gitlab_shell_version)

    print "GitLab Shell version >= #{required_version} ? ... "
    if current_version.valid? && required_version <= current_version
      puts "OK (#{current_version})".color(:green)
    else
      puts "FAIL. Please update gitlab-shell to #{required_version} from #{current_version}".color(:red)
    end
  end

  def check_ruby_version
    required_version = Gitlab::VersionInfo.new(2, 1, 0)
    current_version = Gitlab::VersionInfo.parse(run_command(%w(ruby --version)))

    print "Ruby version >= #{required_version} ? ... "

    if current_version.valid? && required_version <= current_version
      puts "yes (#{current_version})".color(:green)
    else
      puts "no".color(:red)
      try_fixing_it(
        "Update your ruby to a version >= #{required_version} from #{current_version}"
      )
      fix_and_rerun
    end
  end

  def check_git_version
    required_version = Gitlab::VersionInfo.new(2, 7, 3)
    current_version = Gitlab::VersionInfo.parse(run_command(%W(#{Gitlab.config.git.bin_path} --version)))

    puts "Your git bin path is \"#{Gitlab.config.git.bin_path}\""
    print "Git version >= #{required_version} ? ... "

    if current_version.valid? && required_version <= current_version
      puts "yes (#{current_version})".color(:green)
    else
      puts "no".color(:red)
      try_fixing_it(
        "Update your git to a version >= #{required_version} from #{current_version}"
      )
      fix_and_rerun
    end
  end

  def check_active_users
    puts "Active users: #{User.active.count}"
  end

  def omnibus_gitlab?
    Dir.pwd == '/opt/gitlab/embedded/service/gitlab-rails'
  end

  def sanitized_message(project)
    if should_sanitize?
      "#{project.namespace_id.to_s.color(:yellow)}/#{project.id.to_s.color(:yellow)} ... "
    else
      "#{project.name_with_namespace.color(:yellow)} ... "
    end
  end

  def should_sanitize?
    if ENV['SANITIZE'] == "true"
      true
    else
      false
    end
  end

  def check_repo_integrity(repo_dir)
    puts "\nChecking repo at #{repo_dir.color(:yellow)}"

    git_fsck(repo_dir)
    check_config_lock(repo_dir)
    check_ref_locks(repo_dir)
  end

  def git_fsck(repo_dir)
    puts "Running `git fsck`".color(:yellow)
    system(*%W(#{Gitlab.config.git.bin_path} fsck), chdir: repo_dir)
  end

  def check_config_lock(repo_dir)
    config_exists = File.exist?(File.join(repo_dir, 'config.lock'))
    config_output = config_exists ? 'yes'.color(:red) : 'no'.color(:green)
    puts "'config.lock' file exists?".color(:yellow) + " ... #{config_output}"
  end

  def check_ref_locks(repo_dir)
    lock_files = Dir.glob(File.join(repo_dir, 'refs/heads/*.lock'))
    if lock_files.present?
      puts "Ref lock files exist:".color(:red)
      lock_files.each do |lock_file|
        puts "  #{lock_file}"
      end
    else
      puts "No ref lock files exist".color(:green)
    end
  end
end