<?php

/**
 * @file
 * Theme files for Date Pager.
 */

/**
 * Jump in and move the pager.
 */
function date_views_preprocess_views_view(&$vars) {
  $view = $vars['view'];
  if (!empty($view->date_info) && !empty($view->date_info->date_pager_position)) {
    switch ($view->date_info->date_pager_position) {
      case 'top':
        $vars['header'] .= $vars['pager'];
        $vars['pager'] = '';
        break;

      case 'both':
        $vars['header'] .= $vars['pager'];
        break;

      default:
        // Already on the bottom.
    }
  }
}

/**
 * Preprocess function for Date pager template.
 */
function template_preprocess_date_views_pager(&$vars) {
  ctools_add_css('date_views', 'date_views');

  $plugin = $vars['plugin'];
  $input = $vars['input'];
  $view = $plugin->view;

  $vars['nav_title'] = '';
  $vars['next_url'] = '';
  $vars['prev_url'] = '';

  if (empty($view->date_info) || empty($view->date_info->min_date)) {
    return;
  }
  $date_info = $view->date_info;
  // Make sure we have some sort of granularity.
  $granularity = !empty($date_info->granularity) ? $date_info->granularity : 'month';
  $pos = $date_info->date_arg_pos;
  if (!empty($input)) {
    $id = $plugin->options['date_id'];
    if (array_key_exists($id, $input) && !empty($input[$id])) {
      $view->args[$pos] = $input[$id];
    }
  }

  $next_args = $view->args;
  $prev_args = $view->args;
  $min_date = $date_info->min_date;
  $max_date = $date_info->max_date;

  // Set up the pager link format. Setting the block identifier
  // will force pager style links.
  if ((isset($date_info->date_pager_format) && $date_info->date_pager_format != 'clean') || !empty($date_info->mini)) {
    if (empty($date_info->block_identifier)) {
      $date_info->block_identifier = $date_info->pager_id;
    }
  }

  if (empty($date_info->hide_nav)) {
    $prev_date = $date_info->prev_date;
    $next_date = $date_info->next_date;

    $format = array('year' => 'Y', 'month' => 'Y-m', 'day' => 'Y-m-d', 'hour' => 'Y-m-d\TH');
    if (!empty($prev_date)) {
      switch ($granularity) {
        case 'week':
          $prev_week = date_week(date_format($prev_date, 'Y-m-d'));
          $prev_arg = date_format($prev_date, 'o-\W') . date_pad($prev_week);
          break;
        default:
          $prev_arg = date_format($prev_date, $format[$granularity]);
      }
      $prev_path = str_replace($date_info->date_arg, $prev_arg, $date_info->url);
      $prev_args[$pos] = $prev_arg;
      $vars['prev_url'] = date_pager_url($view, NULL, $prev_arg);
    }
    if (!empty($next_date)) {
      switch ($granularity) {
        case 'week':
          $next_week = date_week(date_format($next_date, 'Y-m-d'));
          $next_arg = date_format($next_date, 'o-\W') . date_pad($next_week);
          break;
        default:
          $next_arg = date_format($next_date, $format[$granularity]);
      }
      $next_path = str_replace($date_info->date_arg, $next_arg, $date_info->url);
      $next_args[$pos] = $next_arg;
      $vars['next_url'] = date_pager_url($view, NULL, $next_arg);
    }

    $vars['next_options'] = $vars['prev_options'] = array();
  }
  else {
    $next_path = '';
    $prev_path = '';
    $vars['next_url'] = '';
    $vars['prev_url'] = '';
    $vars['next_options'] = $vars['prev_options'] = array();
  }

  // Check whether navigation links would point to
  // a date outside the allowed range.
  if (!empty($next_date) && !empty($vars['next_url']) && date_format($next_date, 'Y') > $date_info->limit[1]) {
    $vars['next_url'] = '';
  }
  if (!empty($prev_date) && !empty($vars['prev_url']) && date_format($prev_date, 'Y') < $date_info->limit[0]) {
    $vars['prev_url'] = '';
  }
  $vars['prev_options'] += array('attributes' => array());
  $vars['next_options'] += array('attributes' => array());
  $prev_title = '';
  $next_title = '';

  // Build next/prev link titles.
  switch ($granularity) {
    case 'year':
      $prev_title = t('Navigate to previous year');
      $next_title = t('Navigate to next year');
      break;

    case 'month':
      $prev_title = t('Navigate to previous month');
      $next_title = t('Navigate to next month');
      break;

    case 'week':
      $prev_title = t('Navigate to previous week');
      $next_title = t('Navigate to next week');
      break;

    case 'day':
      $prev_title = t('Navigate to previous day');
      $next_title = t('Navigate to next day');
      break;
  }
  $vars['prev_options']['attributes'] += array('title' => $prev_title);
  $vars['next_options']['attributes'] += array('title' => $next_title);

  // Add nofollow for next/prev links.
  $vars['prev_options']['attributes'] += array('rel' => 'nofollow');
  $vars['next_options']['attributes'] += array('rel' => 'nofollow');

  // Need this so we can use '&laquo;' or images in the links.
  $vars['prev_options'] += array('html' => TRUE);
  $vars['next_options'] += array('html' => TRUE);

  $link = FALSE;
  // Month navigation titles are used as links in the block view.
  if (!empty($date_info->mini) && $granularity == 'month') {
    $link = TRUE;
  }
  $params = array(
    'granularity' => $granularity,
    'view' => $view,
    'link' => $link,
  );
  $nav_title = theme('date_nav_title', $params);
  $vars['nav_title'] = $nav_title;
  $vars['mini'] = !empty($date_info->mini);
}

/**
 * Theme the calendar title.
 */
function theme_date_nav_title($params) {
  $title  = '';
  $granularity = $params['granularity'];
  $view = $params['view'];
  $date_info = $view->date_info;
  $link = !empty($params['link']) ? $params['link'] : FALSE;
  $format = !empty($params['format']) ? $params['format'] : NULL;
  $format_with_year = variable_get('date_views_' . $granularity . '_format_with_year', 'l, F j, Y');
  $format_without_year = variable_get('date_views_' . $granularity . '_format_without_year', 'l, F j');
  switch ($granularity) {
    case 'year':
      $title = $date_info->year;
      $date_arg = $date_info->year;
      break;

    case 'month':
      $format = !empty($format) ? $format : (empty($date_info->mini) ? $format_with_year : $format_without_year);
      $title = date_format_date($date_info->min_date, 'custom', $format);
      $date_arg = $date_info->year . '-' . date_pad($date_info->month);
      break;

    case 'day':
      $format = !empty($format) ? $format : (empty($date_info->mini) ? $format_with_year : $format_without_year);
      $title = date_format_date($date_info->min_date, 'custom', $format);
      $date_arg = $date_info->year;
      $date_arg .= '-';
      $date_arg .= date_pad($date_info->month);
      $date_arg .= '-';
      $date_arg .= date_pad($date_info->day);
      break;

    case 'week':
      $format = !empty($format) ? $format : (empty($date_info->mini) ? $format_with_year : $format_without_year);
      $title = t('Week of @date', array(
        '@date' => date_format_date($date_info->min_date, 'custom', $format),
      ));
      $date_arg = $date_info->year . '-W' . date_pad($date_info->week);
      break;
  }
  if (!empty($date_info->mini) || $link) {
    // Month navigation titles are used as links in the mini view.
    $attributes = array('title' => t('View full page month'));
    $url = date_pager_url($view, $granularity, $date_arg, TRUE);
    return l($title, $url, array('attributes' => $attributes));
  }
  else {
    return $title;
  }
}

/**
 * Preprocessor for Date Views filter form.
 */
function template_preprocess_date_views_filter_form(&$vars) {
  $form = $vars['form'];
  $vars['date'] = drupal_render($form['valuedate']);
  $vars['mindate'] = drupal_render($form['mindate']);
  $vars['maxdate'] = drupal_render($form['maxdate']);
  $vars['adjustment'] = drupal_render($form['valueadjustment']);
  $vars['minadjustment'] = drupal_render($form['minadjustment']);
  $vars['maxadjustment'] = drupal_render($form['maxadjustment']);
  $vars['description'] = drupal_render($form['description']) . drupal_render($form);
}