module TasklistHelper
  include GovukLinkHelper
  include GovukVisuallyHiddenHelper
  include CollectionTimeHelper

  def breadcrumb_logs_title(log, current_user)
    log_type = log.lettings? ? "Lettings" : "Sales"
    if current_user.support? && breadcrumb_organisation(log).present?
      "#{log_type} logs (#{breadcrumb_organisation(log).name})"
    else
      "#{log_type} logs"
    end
  end

  def breadcrumb_logs_link(log, current_user)
    if current_user.support? && breadcrumb_organisation(log).present?
      log.lettings? ? lettings_logs_organisation_path(breadcrumb_organisation(log)) : sales_logs_organisation_path(breadcrumb_organisation(log))
    else
      log.lettings? ? lettings_logs_path : sales_logs_path
    end
  end

  def get_next_incomplete_section(log)
    log.form.subsections.find { |subsection| subsection.is_incomplete?(log) }
  end

  def get_subsections_count(log, status = :all)
    return log.form.subsections.count { |subsection| subsection.displayed_in_tasklist?(log) } if status == :all

    log.form.subsections.count { |subsection| subsection.status(log) == status && subsection.applicable_questions(log).count.positive? }
  end

  def next_question_page(subsection, log, current_user)
    if subsection.pages.first.routed_to?(log, current_user)
      subsection.pages.first.id
    else
      log.form.next_page_id(subsection.pages.first, log, current_user)
    end
  end

  def subsection_link(subsection, log, current_user)
    if subsection.status(log) != :cannot_start_yet
      next_page_path = next_page_or_check_answers(subsection, log, current_user).to_s
      govuk_link_to(subsection.label, next_page_path.dasherize, class: "govuk-task-list__link", aria: { describedby: subsection.id.dasherize })
    else
      subsection.label
    end
  end

  def subsection_href(subsection, log, current_user)
    if subsection.status(log) != :cannot_start_yet
      next_page_path = next_page_or_check_answers(subsection, log, current_user).to_s
      next_page_path.dasherize
    end
  end

  def review_log_text(log)
    if log.collection_period_open?
      path = log.sales? ? review_sales_log_path(id: log, sales_log: true) : review_lettings_log_path(log)

      "You can #{govuk_link_to 'review and make changes to this log', path} until #{log.form.submission_deadline.to_formatted_s(:govuk_date)}.".html_safe
    else
      start_year = log.startdate ? collection_start_year_for_date(log.startdate) : log.form.start_date.year

      "This log is from the #{start_year} to #{start_year + 1} collection window, which is now closed."
    end
  end

  def tasklist_link_class(status)
    status == :cannot_start_yet ? "" : "govuk-task-list__item--with-link"
  end

private

  def breadcrumb_organisation(log)
    log.owning_organisation || (log.managing_organisation if log.respond_to?(:managing_organisation))
  end

  def next_page_or_check_answers(subsection, log, current_user)
    path = if subsection.is_started?(log)
             "#{log.class.name.underscore}_#{subsection.id}_check_answers_path"
           else
             "#{log.class.name.underscore}_#{next_question_page(subsection, log, current_user)}_path"
           end

    send(path, log)
  end
end