<?php

/**
 * @file
 * Contains install and update functions for Views.
 */

/**
 * Implements hook_install().
 */
function views_install() {
  module_set_weight('views', 10);
}

/**
 * Update views field plugins.
 */
function views_update_8001(&$sandbox) {
  $config_factory = \Drupal::configFactory();
  $ids = [];
  $message = NULL;
  $ago_formats = [
    'time ago',
    'time hence',
    'time span',
    'raw time ago',
    'raw time hence',
    'raw time span',
    'inverse time span',
  ];

  foreach ($config_factory->listAll('views.view.') as $view_config_name) {
    $view = $config_factory->getEditable($view_config_name);

    $displays = $view->get('display');

    foreach ($displays as $display_name => $display) {
      if (!empty($display['display_options']['fields'])) {
        foreach ($display['display_options']['fields'] as $field_name => $field) {
          if (isset($field['entity_type']) && $field['plugin_id'] === 'date') {
            $ids[] = $view->get('id');

            // Grab the settings we need to move to a different place in the
            // config schema.
            $date_format = !empty($field['date_format']) ? $field['date_format'] : 'medium';
            $custom_date_format = !empty($field['custom_date_format']) ? $field['custom_date_format'] : '';
            $timezone = !empty($field['timezone']) ? $field['timezone'] : '';

            // Save off the base part of the config path we are updating.
            $base = "display.$display_name.display_options.fields.$field_name";

            if (in_array($date_format, $ago_formats)) {
              // Update the field to use the Field API formatter.
              $view->set($base . '.plugin_id', 'field');
              $view->set($base . '.type', 'timestamp_ago');

              // Ensure the granularity is an integer, which is defined in the
              // field.formatter.settings.timestamp_ago schema.
              $granularity = is_numeric($custom_date_format) ? (int) $custom_date_format : 2;

              // Add the new settings.
              if ($date_format === 'time ago' || $date_format === 'time hence' || $date_format === 'time span') {
                $view->set($base . '.settings.future_format', '@interval hence');
                $view->set($base . '.settings.past_format', '@interval ago');
                $view->set($base . '.settings.granularity', $granularity);
              }
              elseif ($date_format === 'raw time ago' || $date_format === 'raw time hence') {
                $view->set($base . '.settings.future_format', '@interval');
                $view->set($base . '.settings.past_format', '@interval');
                $view->set($base . '.settings.granularity', $granularity);
              }
              elseif ($date_format === 'raw time span') {
                $view->set($base . '.settings.future_format', '@interval');
                $view->set($base . '.settings.past_format', '-@interval');
                $view->set($base . '.settings.granularity', $granularity);
              }
              elseif ($date_format === 'inverse time span') {
                $view->set($base . '.settings.future_format', '-@interval');
                $view->set($base . '.settings.past_format', '@interval');
                $view->set($base . '.settings.granularity', $granularity);
              }
            }
            else {
              // Update the field to use the Field API formatter.
              $view->set($base . '.plugin_id', 'field');
              $view->set($base . '.type', 'timestamp');

              // Add the new settings, and make sure everything is a string
              // to conform with the field.formatter.settings.timestamp schema.
              $view->set($base . '.settings.date_format', (string) $date_format);
              $view->set($base . '.settings.custom_date_format', (string) $custom_date_format);
              $view->set($base . '.settings.timezone', (string) $timezone);
            }

            // Remove the old settings.
            $view->clear($base . '.date_format');
            $view->clear($base . '.custom_date_format');
            $view->clear($base . '.timezone');
          }
        }
      }
    }

    $view->save(TRUE);
  }

  if (!empty($ids)) {
    $message = \Drupal::translation()->translate('Updated field plugins for views: @ids', ['@ids' => implode(', ', array_unique($ids))]);
  }

  return $message;
}

/**
 * Updates %1 and !1 tokens to argument tokens.
 */
function views_update_8002() {
  $config_factory = \Drupal::configFactory();
  foreach ($config_factory->listAll('views.view.') as $view_config_name) {
    $view = $config_factory->getEditable($view_config_name);

    $displays = $view->get('display');
    $argument_map_per_display = _views_update_argument_map($displays);

    $changed = FALSE;

    // Update all the field settings, which support tokens.
    foreach ($displays as $display_name => &$display) {
      if (!empty($display['display_options']['fields'])) {
        $token_values = [
          'path',
          'alt',
          'link_class',
          'rel',
          'target',
          'query',
          'fragment',
          'prefix',
          'suffix',
          'more_link_text',
          'more_link_path',
          'link_attributes',
          'text',
        ];

        foreach ($display['display_options']['fields'] as $field_name => &$field) {
          foreach ($token_values as $token_name) {
            if (!empty($field['alter'][$token_name])) {
              if (is_array($field['alter'][$token_name])) {
                foreach (array_keys($field['alter'][$token_name]) as $key) {
                  $field['alter'][$token_name][$key] = _views_update_8002_token_update($field['alter'][$token_name][$key], $argument_map_per_display[$display_name]);
                  $changed = TRUE;
                }
              }
              else {
                $field['alter'][$token_name] = _views_update_8002_token_update($field['alter'][$token_name], $argument_map_per_display[$display_name]);
                $changed = TRUE;
              }
            }
          }
        }
      }
    }

    // Update the area handlers with tokens.
    foreach ($displays as $display_name => &$display) {
      $area_types = ['header', 'footer', 'empty'];
      foreach ($area_types as $area_type) {
        if (!empty($display['display_options'][$area_type])) {
          foreach ($display['display_options'][$area_type] as &$area) {
            switch ($area['plugin_id']) {
              case 'title':
                $area['title'] = _views_update_8002_token_update($area['title'], $argument_map_per_display[$display_name]);
                $changed = TRUE;
                break;
              case 'result':
                $area['content'] = _views_update_8002_token_update($area['content'], $argument_map_per_display[$display_name]);
                $changed = TRUE;
                break;
              case 'text':
                $area['content']['value'] = _views_update_8002_token_update($area['content']['value'], $argument_map_per_display[$display_name]);
                $changed = TRUE;
                break;
              case 'text_custom':
                $area['content'] = _views_update_8002_token_update($area['content'], $argument_map_per_display[$display_name]);
                $changed = TRUE;
                break;
              case 'entity':
                $area['target'] = _views_update_8002_token_update($area['target'], $argument_map_per_display[$display_name]);
                $changed = TRUE;
                break;
            }
          }
        }
      }
    }

    // Update the argument title settings.
    foreach ($displays as $display_name => &$display) {
      if (!empty($display['display_options']['arguments'])) {
        foreach ($display['display_options']['arguments'] as &$argument) {
          if (isset($argument['exception']['title'])) {
            $argument['exception']['title'] = _views_update_8002_token_update($argument['exception']['title'], $argument_map_per_display[$display_name]);
            $changed = TRUE;
          }
          if (isset($argument['title'])) {
            $argument['title'] = _views_update_8002_token_update($argument['title'], $argument_map_per_display[$display_name]);
            $changed = TRUE;
          }
        }
      }
    }

    // Update the display title settings.
    // Update the more link text and more link URL.
    foreach ($displays as $display_name => &$display) {
      if (!empty($display['display_options']['title'])) {
        $display['display_options']['title'] = _views_update_8002_token_update($display['display_options']['title'], $argument_map_per_display[$display_name]);
        $changed = TRUE;
      }
      if (!empty($display['display_options']['use_more_text'])) {
        $display['display_options']['use_more_text'] = _views_update_8002_token_update($display['display_options']['use_more_text'], $argument_map_per_display[$display_name]);
        $changed = TRUE;
      }
      if (!empty($display['display_options']['link_url'])) {
        $display['display_options']['link_url'] = _views_update_8002_token_update($display['display_options']['link_url'], $argument_map_per_display[$display_name]);
        $changed = TRUE;
      }
    }

    // Update custom classes for row class + grid classes.
    // Update RSS description field.
    foreach ($displays as $display_name => &$display) {
      if (!empty($display['display_options']['style'])) {
        if (!empty($display['display_options']['style']['options']['row_class_custom'])) {
          $display['display_options']['style']['options']['row_class_custom'] = _views_update_8002_token_update($display['display_options']['style']['options']['row_class_custom'], $argument_map_per_display[$display_name]);
          $changed = TRUE;
        }
        if (!empty($display['display_options']['style']['options']['col_class_custom'])) {
          $display['display_options']['style']['options']['col_class_custom'] = _views_update_8002_token_update($display['display_options']['style']['options']['col_class_custom'], $argument_map_per_display[$display_name]);
          $changed = TRUE;
        }
        if (!empty($display['display_options']['style']['options']['description'])) {
          $display['display_options']['style']['options']['description'] = _views_update_8002_token_update($display['display_options']['style']['options']['description'], $argument_map_per_display[$display_name]);
          $changed = TRUE;
        }
      }
    }

    if ($changed) {
      $view->set('display', $displays);
      $view->save(TRUE);
    }
  }
}

/**
 * Updates a views configuration string from using %/! to twig tokens.
 *
 * @param string $text
 *   Text in which to search for argument tokens and replace them with their
 *   twig representation.
 * @param array $argument_map
 *   A map of argument machine names keyed by their previous index.
 *
 * @return string
 *   The updated token.
 */
function _views_update_8002_token_update($text, array $argument_map) {
  $text = preg_replace_callback('/%(\d)/', function ($match) use ($argument_map) {
    return "{{ arguments.{$argument_map[$match[1]]} }}";
  }, $text);
  $text = preg_replace_callback('/!(\d)/', function ($match) use ($argument_map) {
    return "{{ raw_arguments.{$argument_map[$match[1]]} }}";
  }, $text);

  return $text;
}

/**
 * Builds an argument map for each Views display.
 *
 * @param array $displays
 *   A list of Views displays.
 *
 * @return array
 *   The argument map keyed by display id.
 */
function _views_update_argument_map($displays) {
  $argument_map = [];
  foreach ($displays as $display_id => $display) {
    $argument_map[$display_id] = [];
    if (isset($display['display_options']['arguments'])) {
      foreach (array_keys($display['display_options']['arguments']) as $number => $name) {
        $argument_map[$display_id][$number + 1] = $name;
      }
    }
    elseif (isset($displays['default']['display_options']['arguments'])) {
      foreach (array_keys($displays['default']['display_options']['arguments']) as $number => $name) {
        $argument_map[$display_id][$number + 1] = $name;
      }
    }
  }

  return $argument_map;
}

/**
 * Clear caches to fix entity operations field.
 */
function views_update_8003() {
  // Empty update to cause a cache flush so that views data is rebuilt. Entity
  // types that don't implement a list builder cannot have the entity operations
  // field.
}

/**
 * Clear caches due to updated entity views data.
 */
function views_update_8004() {
  // Empty update to cause a cache flush so that views data is rebuilt.
}

/**
 * Clear views data cache.
 */
function views_update_8005() {
  // Empty update function to rebuild the views data.
}

/**
 * Clear caches due to updated entity views data.
 */
function views_update_8100() {
  // Empty update to cause a cache flush so that views data is rebuilt.
}

/**
 * Set default values for enabled/expanded flag on page displays.
 */
function views_update_8101() {
  $config_factory = \Drupal::configFactory();
  foreach ($config_factory->listAll('views.view.') as $view_config_name) {
    $view = $config_factory->getEditable($view_config_name);
    $save = FALSE;
    foreach ($view->get('display') as $display_id => $display) {
      if ($display['display_plugin'] == 'page') {
        $display['display_options']['menu']['enabled'] = TRUE;
        $display['display_options']['menu']['expanded'] = FALSE;
        $view->set("display.$display_id", $display);
        $save = TRUE;
      }
    }
    if ($save) {
      $view->save();
    }
  }
}

/**
 * Rebuild the container to add a new container parameter.
 */
function views_update_8200() {
  // Empty update to cause a cache rebuild so that the container is rebuilt.
}

/**
 * Rebuild cache to refresh the views config schema.
 */
function views_update_8201() {
  // Empty update to cause a cache rebuild so that config schema get refreshed.
}