<?php

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

use Drupal\Core\Config\Schema\ArrayElement;
use Drupal\views\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.

  // Use hook_post_update_NAME() instead to clear the cache.The use
  // of hook_update_N to clear the cache has been deprecated see
  // https://www.drupal.org/node/2960601 for more details.
}

/**
 * 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.

  // Use hook_post_update_NAME() instead to clear the cache.The use
  // of hook_update_N to clear the cache has been deprecated see
  // https://www.drupal.org/node/2960601 for more details.
}

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

  // Use hook_post_update_NAME() instead to clear the cache.The use
  // of hook_update_N to clear the cache has been deprecated see
  // https://www.drupal.org/node/2960601 for more details.
}

/**
 * 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.

  // Use hook_post_update_NAME() instead to clear the cache.The use
  // of hook_update_N to clear the cache has been deprecated see
  // https://www.drupal.org/node/2960601 for more details.
}

/**
 * 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.

  // Use hook_post_update_NAME() instead to clear the cache.The use
  // of hook_update_N to clear the cache has been deprecated see
  // https://www.drupal.org/node/2960601 for more details.
}

/**
 * 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.

  // Use hook_post_update_NAME() instead to clear the cache.The use
  // of hook_update_N to clear the cache has been deprecated see
  // https://www.drupal.org/node/2960601 for more details.
}

/**
 * Update field names for multi-value base fields.
 */
function views_update_8500() {
  // Find all multi-value base fields for content entities.
  $entity_type_manager = \Drupal::entityTypeManager();
  $entity_field_manager = \Drupal::service('entity_field.manager');
  $table_update_info = [];

  foreach ($entity_type_manager->getDefinitions() as $entity_type_id => $entity_type) {
    if ($entity_type->hasHandlerClass('views_data')) {
      $base_field_definitions = $entity_field_manager->getBaseFieldDefinitions($entity_type_id);

      $entity_storage = $entity_type_manager->getStorage($entity_type_id);
      $table_mapping = $entity_storage->getTableMapping($base_field_definitions);

      foreach ($base_field_definitions as $field_name => $base_field_definition) {
        $base_field_storage_definition = $base_field_definition->getFieldStorageDefinition();

        // Skip single value and custom storage base fields.
        if (!$base_field_storage_definition->isMultiple() || $base_field_storage_definition->hasCustomStorage()) {
          continue;
        }

        // Get the actual table, as well as the column for the main property
        // name so we can perform an update later on the views.
        $table_name = $table_mapping->getFieldTableName($field_name);
        $main_property_name = $base_field_storage_definition->getMainPropertyName();

        $table_update_info[$table_name][$field_name] = $table_mapping->getFieldColumnName($base_field_storage_definition, $main_property_name);
      }
    }
  }

  if (empty($table_update_info)) {
    return;
  }

  $config_factory = \Drupal::configFactory();
  /** @var \Drupal\Core\Config\TypedConfigManagerInterface $typed_config_manager */
  $typed_config_manager = \Drupal::service('config.typed');
  $views_data = Views::viewsData();
  $handler_types = ['field', 'argument', 'sort', 'relationship', 'filter'];

  $required_cleanup_handlers = [];
  foreach ($config_factory->listAll('views.view.') as $id) {
    $view = $config_factory->getEditable($id);
    $changed = FALSE;

    foreach ($view->get('display') as $display_id => &$display) {
      foreach ($handler_types as $handler_type_singular) {
        $handler_type_plural = $handler_type_singular . 's';
        $handler_data = $view->get("display.$display_id.display_options.$handler_type_plural");

        if (empty($handler_data)) {
          continue;
        }

        foreach ($handler_data as $key => $data) {
          // If this handler has a table we're interested in, update the field
          // name.
          $table = $data['table'];
          if (isset($table_update_info[$table])) {
            $path_to_handler = "display.$display_id.display_options.$handler_type_plural.$key";
            $path_field = "{$path_to_handler}.field";
            $path_plugin_id = "{$path_to_handler}.plugin_id";
            $original_field_name = $view->get($path_field);

            // Only if the wrong field name is set do we change the field. It
            // could already be using the correct field. Like
            // user__roles/roles_target_id.
            if (isset($table_update_info[$table][$original_field_name])) {
              $required_cleanup_handlers[$id][] = $path_to_handler;

              // Set both the new table field as well as new 'plugin_id' field.
              $view->set($path_field, $table_update_info[$table][$original_field_name]);
              $view->set($path_plugin_id, $views_data->get($table)[$table_update_info[$table][$original_field_name]][$handler_type_singular]['id']);

              $changed = TRUE;
            }
          }
        }
      }
    }

    if ($changed) {
      $view->save(TRUE);
    }
  }

  // Beside of updating the field and plugin ID we also need to truncate orphan
  // keys so he configuration applies to the config schema.
  // We cannot do that inline in the other code, due to caching issues with
  // typed configuration.
  foreach ($required_cleanup_handlers as $id => $paths_to_handlers) {
    $changed = FALSE;
    $typed_view = $typed_config_manager->get($id);
    $view = $config_factory->getEditable($id);
    foreach ($paths_to_handlers as $path_to_handler) {
      /** @var \Drupal\Core\Config\Schema\TypedConfigInterface $typed_view */

      /** @var \Drupal\Core\Config\Schema\ArrayElement $typed_config */
      $typed_config = $typed_view->get($path_to_handler);
      $config = $typed_config->getValue();

      // Filter values we want to convert from a string to an array.
      if (strpos($path_to_handler, 'filters') !== FALSE && $typed_config->get('value') instanceof ArrayElement && is_string($config['value'])) {
        // An empty string casted to an array is an array with one
        // element.
        if ($config['value'] === '') {
          $config['value'] = [];
        }
        else {
          $config['value'] = (array) $config['value'];
        }
      }

      // For all the other fields we try to determine the fields using
      // config schema and remove everything which is not needed.
      foreach (array_keys($config) as $config_key) {
        if (!isset($typed_config->getDataDefinition()['mapping'][$config_key])) {
          unset($config[$config_key]);
          $changed = TRUE;
        }
      }
      $typed_config->setValue($config);
      $view->set($path_to_handler, $typed_config->getValue());
    }

    if ($changed) {
      $view->save();
    }
  }
}