- content_for :head do
  // Force a full page reload, see https://github.com/turbolinks/turbolinks/issues/326.
     Otherwise, code might not be highlighted correctly (race condition)
  meta name='turbolinks-visit-control' content='reload'
  - append_javascript_pack_tag('d3-tip')
h1 = @exercise

= row(label: '.participants', value: @exercise.users.distinct.count)

- [:intermediate, :final].each do |scope|
  = row(label: ".#{scope}_submissions") do
    = "#{@exercise.submissions.send(scope).count} (#{t('.users', count: @exercise.submissions.send(scope).distinct.count(:user_id))})"

= row(label: '.finishing_rate') do
  p
    - if @exercise.finishers.count
      span.number
        = @exercise.finishers.count
      =<> t('shared.out_of')
      span.number
        = @exercise.users.distinct.count
      =< t('exercises.statistics.external_users')
    - else
      = empty
  - finishers_count = @exercise.users.distinct.count
  - finishers_percentage = finishers_count == 0 ? 0 : (100.0 / finishers_count * @exercise.finishers.count).round(2)
  p = progress_bar(finishers_percentage)

= row(label: '.average_score') do
  p
    - if @exercise.average_score
      span.number
        = @exercise.average_score.round(2)
      =<> t('shared.out_of')
      span.number
        = @exercise.maximum_score
    - else
      = empty
  p = progress_bar(@exercise.average_percentage)

- if policy(@exercise).detailed_statistics?
  = row(label: '.average_worktime') do
    p = @exercise.average_working_time

- Hash[:internal_users => t('.internal_users'), :external_users => t('.external_users')].each_pair do |symbol, label|
  - if symbol==:internal_users && current_user.admin?
    strong = label
  - if symbol==:external_users
    - working_time_array = []
    - @exercise.send(symbol).distinct().each do |user|
      - working_time = @exercise.average_working_time_for(user) or 0
      - working_time_array.push working_time
    hr
    .d-none#data data-working-time=ActiveSupport::JSON.encode(working_time_array)
    .working-time-graphs
    div#chart_1
    hr
    div#chart_2
    hr
  - submissions = Submission.where(user: @exercise.send(symbol).distinct, exercise: @exercise).in_study_group_of(current_user)
  - if !policy(@exercise).detailed_statistics?
    - submissions = submissions.final
  - if submissions.any?
    .table-responsive
      table.table.table-striped.sortable
        thead
          tr
            th.header = t('.user')
            th.header = t('.score')
            th.header = t('.deadline')
            th.header = t('.runs') if policy(@exercise).detailed_statistics?
            th.header = t('.worktime') if policy(@exercise).detailed_statistics?
        tbody
          - users = symbol.to_s.classify.constantize.where(id: submissions.joins(symbol).group(:user_id).select(:user_id).distinct)
          - users.each do |user|
            - if user_statistics[user.class.name][user.id] then us = user_statistics[user.class.name][user.id] else us = {"maximum_score" => nil, "runs" => nil}
            - label = "#{user.displayname}"
            tr
              td = link_to_if symbol==:external_users && policy(user).statistics?, label, {controller: "exercises", action: "statistics", external_user_id: user.id, id: @exercise.id}
              td = us['maximum_score'] or 0
              td.align-middle
                - latest_user_submission = submissions.where(user: user).final.latest
                - if latest_user_submission.present?
                  - if latest_user_submission.before_deadline?
                    .unit-test-result.positive-result.before_deadline
                  - elsif latest_user_submission.within_grace_period?
                    .unit-test-result.unknown-result.within_grace_period
                  - elsif latest_user_submission.after_late_deadline?
                    .unit-test-result.negative-result.after_late_deadline
              td = us['runs'] if policy(@exercise).detailed_statistics?
              td = @exercise.average_working_time_for(user) or 0 if policy(@exercise).detailed_statistics?