// Timetable group list page renderer.

const { renderView } = require('../../../view');

function formatNextStartLabel(value, formatDashboardDate) {
  if (!value) {
    return 'No entries';
  }

  const label = typeof formatDashboardDate === 'function'
    ? formatDashboardDate(value)
    : String(value);
  return label || 'No entries';
}

module.exports = function renderTimetableGroupsPage(data, message, currentUser, formatDashboardDate) {
  const timetableGroups = (data.timetableGroups || []).map(function (timetableGroup) {
    return Object.assign({}, timetableGroup, {
      nextStartLabel: formatNextStartLabel(timetableGroup.next_start_datetime, formatDashboardDate),
      nextStartValue: timetableGroup.next_start_datetime ? new Date(timetableGroup.next_start_datetime).toISOString() : ''
    });
  });

  return renderView('data-sources/timetables/list', {
    title: 'Timetables',
    active: 'timetables',
    message: message,
    currentUser: currentUser || null,
    timetableGroups: timetableGroups,
    pagination: data.pagination || null
  });
};