module ApplicationSettingsHelper
  extend self

  include Gitlab::CurrentSettings

  delegate  :gravatar_enabled?,
            :signup_enabled?,
            :password_authentication_enabled?,
            :akismet_enabled?,
            :koding_enabled?,
            to: :current_application_settings

  def user_oauth_applications?
    current_application_settings.user_oauth_applications
  end

  def allowed_protocols_present?
    current_application_settings.enabled_git_access_protocol.present?
  end

  def enabled_protocol
    case current_application_settings.enabled_git_access_protocol
    when 'http'
      gitlab_config.protocol
    when 'ssh'
      'ssh'
    end
  end

  def enabled_project_button(project, protocol)
    case protocol
    when 'ssh'
      ssh_clone_button(project, 'bottom', append_link: false)
    else
      http_clone_button(project, 'bottom', append_link: false)
    end
  end

  # Return a group of checkboxes that use Bootstrap's button plugin for a
  # toggle button effect.
  def restricted_level_checkboxes(help_block_id, checkbox_name)
    Gitlab::VisibilityLevel.values.map do |level|
      checked = restricted_visibility_levels(true).include?(level)
      css_class = checked ? 'active' : ''
      tag_name = "application_setting_visibility_level_#{level}"

      label_tag(tag_name, class: css_class) do
        check_box_tag(checkbox_name, level, checked,
                      autocomplete: 'off',
                      'aria-describedby' => help_block_id,
                      id: tag_name) + visibility_level_icon(level) + visibility_level_label(level)
      end
    end
  end

  # Return a group of checkboxes that use Bootstrap's button plugin for a
  # toggle button effect.
  def import_sources_checkboxes(help_block_id)
    Gitlab::ImportSources.options.map do |name, source|
      checked = current_application_settings.import_sources.include?(source)
      css_class = checked ? 'active' : ''
      checkbox_name = 'application_setting[import_sources][]'

      label_tag(name, class: css_class) do
        check_box_tag(checkbox_name, source, checked,
                      autocomplete: 'off',
                      'aria-describedby' => help_block_id,
                      id: name.tr(' ', '_')) + name
      end
    end
  end

  def oauth_providers_checkboxes
    button_based_providers.map do |source|
      disabled = current_application_settings.disabled_oauth_sign_in_sources.include?(source.to_s)
      css_class = 'btn'
      css_class << ' active' unless disabled
      checkbox_name = 'application_setting[enabled_oauth_sign_in_sources][]'

      label_tag(checkbox_name, class: css_class) do
        check_box_tag(checkbox_name, source, !disabled,
                      autocomplete: 'off') + Gitlab::OAuth::Provider.label_for(source)
      end
    end
  end

  def key_restriction_options_for_select(type)
    bit_size_options = Gitlab::SSHPublicKey.supported_sizes(type).map do |bits|
      ["Must be at least #{bits} bits", bits]
    end

    [
      ['Are allowed', 0],
      *bit_size_options,
      ['Are forbidden', ApplicationSetting::FORBIDDEN_KEY_VALUE]
    ]
  end

  def repository_storages_options_for_select
    options = Gitlab.config.repositories.storages.map do |name, storage|
      ["#{name} - #{storage['path']}", name]
    end

    options_for_select(options, @application_setting.repository_storages)
  end

  def sidekiq_queue_options_for_select
    options_for_select(Sidekiq::Queue.all.map(&:name), @application_setting.sidekiq_throttling_queues)
  end

  def circuitbreaker_failure_count_help_text
    health_link = link_to(s_('AdminHealthPageLink|health page'), admin_health_check_path)
    api_link = link_to(s_('CircuitBreakerApiLink|circuitbreaker api'), help_page_path("api/repository_storage_health"))
    message = _("The number of failures of after which GitLab will completely "\
                "prevent access to the storage. The number of failures can be "\
                "reset in the admin interface: %{link_to_health_page} or using "\
                "the %{api_documentation_link}.")
    message = message % { link_to_health_page: health_link, api_documentation_link: api_link }

    message.html_safe
  end

  def circuitbreaker_access_retries_help_text
    _('The number of attempts GitLab will make to access a storage.')
  end

  def circuitbreaker_backoff_threshold_help_text
    _("The number of failures after which GitLab will start temporarily "\
      "disabling access to a storage shard on a host")
  end

  def circuitbreaker_failure_wait_time_help_text
    _("When access to a storage fails. GitLab will prevent access to the "\
      "storage for the time specified here. This allows the filesystem to "\
      "recover. Repositories on failing shards are temporarly unavailable")
  end

  def circuitbreaker_failure_reset_time_help_text
    _("The time in seconds GitLab will keep failure information. When no "\
      "failures occur during this time, information about the mount is reset.")
  end

  def circuitbreaker_storage_timeout_help_text
    _("The time in seconds GitLab will try to access storage. After this time a "\
      "timeout error will be raised.")
  end

  def visible_attributes
    [
      :admin_notification_email,
      :after_sign_out_path,
      :after_sign_up_text,
      :akismet_api_key,
      :akismet_enabled,
      :auto_devops_enabled,
      :circuitbreaker_access_retries,
      :circuitbreaker_backoff_threshold,
      :circuitbreaker_failure_count_threshold,
      :circuitbreaker_failure_reset_time,
      :circuitbreaker_failure_wait_time,
      :circuitbreaker_storage_timeout,
      :clientside_sentry_dsn,
      :clientside_sentry_enabled,
      :container_registry_token_expire_delay,
      :default_artifacts_expire_in,
      :default_branch_protection,
      :default_group_visibility,
      :default_project_visibility,
      :default_projects_limit,
      :default_snippet_visibility,
      :disabled_oauth_sign_in_sources,
      :domain_blacklist_enabled,
      :domain_blacklist_raw,
      :domain_whitelist_raw,
      :dsa_key_restriction,
      :ecdsa_key_restriction,
      :ed25519_key_restriction,
      :email_author_in_body,
      :enabled_git_access_protocol,
      :gravatar_enabled,
      :hashed_storage_enabled,
      :help_page_hide_commercial_content,
      :help_page_support_url,
      :help_page_text,
      :home_page_url,
      :housekeeping_bitmaps_enabled,
      :housekeeping_enabled,
      :housekeeping_full_repack_period,
      :housekeeping_gc_period,
      :housekeeping_incremental_repack_period,
      :html_emails_enabled,
      :import_sources,
      :koding_enabled,
      :koding_url,
      :max_artifacts_size,
      :max_attachment_size,
      :max_pages_size,
      :metrics_enabled,
      :metrics_host,
      :metrics_method_call_threshold,
      :metrics_packet_size,
      :metrics_pool_size,
      :metrics_port,
      :metrics_sample_interval,
      :metrics_timeout,
      :password_authentication_enabled,
      :performance_bar_allowed_group_id,
      :performance_bar_enabled,
      :plantuml_enabled,
      :plantuml_url,
      :polling_interval_multiplier,
      :project_export_enabled,
      :prometheus_metrics_enabled,
      :recaptcha_enabled,
      :recaptcha_private_key,
      :recaptcha_site_key,
      :repository_checks_enabled,
      :repository_storages,
      :require_two_factor_authentication,
      :restricted_visibility_levels,
      :rsa_key_restriction,
      :send_user_confirmation_email,
      :sentry_dsn,
      :sentry_enabled,
      :session_expire_delay,
      :shared_runners_enabled,
      :shared_runners_text,
      :sidekiq_throttling_enabled,
      :sidekiq_throttling_factor,
      :sidekiq_throttling_queues,
      :sign_in_text,
      :signup_enabled,
      :terminal_max_session_time,
      :two_factor_grace_period,
      :unique_ips_limit_enabled,
      :unique_ips_limit_per_user,
      :unique_ips_limit_time_window,
      :usage_ping_enabled,
      :user_default_external,
      :user_oauth_applications,
      :version_check_enabled
    ]
  end
end
