<?php
/**
 * @file
 * Farm import module.
 */

/**
 * Implements hook_ctools_plugin_api().
 */
function farm_import_ctools_plugin_api($module = NULL, $api = NULL) {
  $return = array();
  if ($module == 'feeds' && $api == 'feeds_importer_default') {
    $return['version'] = '1';
  }
  if ($module == 'feeds_tamper' && $api == 'feeds_tamper_default') {
    $return['version'] = '2';
  }
  return $return;
}

/**
 * Implements hook_ctools_plugin_directory().
 */
function farm_import_ctools_plugin_directory($owner, $plugin_type) {
  if ($owner == 'feeds_tamper' && $plugin_type == 'plugins') {
    return 'includes/feeds_tamper/plugins/';
  }
}

/**
 * Implements hook_farm_access_perms().
 */
function farm_import_farm_access_perms($role) {
  $perms = array();

  // Load the list of farm roles.
  $roles = farm_access_roles();

  // If this role has 'config' access, grant access to Feeds importers.
  if (!empty($roles[$role]['access']['config'])) {

    // Add permissions for asset importers.
    $asset_types = farm_asset_types();
    foreach ($asset_types as $type) {
      $perms[] = 'import farm_asset_' . $type->type . ' feeds';
    }

    // Add permissions for log importers.
    $log_types = log_types();
    foreach ($log_types as $type) {
      $perms[] = 'import log_' . $type->type . ' feeds';
    }
  }

  return $perms;
}

/**
 * Implements hook_farm_ui_actions().
 */
function farm_import_farm_ui_actions() {
  $actions = array();

  // Load entity UI information.
  $ui_info = farm_ui_entities();

  // Add action links to asset and log importers on listing pages.
  $types = array(
    'farm_asset',
    'log',
  );
  foreach ($types as $type) {
    if (!empty($ui_info[$type])) {
      foreach ($ui_info[$type] as $bundle => $info) {
        if (!empty($info['view'])) {
          $actions[$bundle . '_import'] = array(
            'title' => t('Import') . ' ' . strtolower($info['label_plural']),
            'href' => 'import/' . $type . '_' . $bundle,
            'views' => array(
              $info['view'],
            ),
            'weight' => 100,
          );
        }
      }
    }
  }

  return $actions;
}

/**
 * Implements hook_feeds_processor_targets_alter().
 */
function farm_import_feeds_processor_targets_alter(&$targets, $type, $bundle) {

  // Add a target for the "Archive assets" column on logs.
  if ($type == 'log') {
    $targets['farm_import_log_archive_assets'] = array(
      'name' => t('Archive assets'),
      'description' => t('Archives the assets referenced on the log.'),
      'callback' => 'farm_import_log_archive_assets',
    );
  }
}

/**
 * Callback for 'farm_import_log_archive_assets' target.
 */
function farm_import_log_archive_assets($source, $entity, $target, $value, $mapping) {

  // Don't do anything if we weren't given any data.
  if (empty($value)) {
    return;
  }

  // In case the value arrives as an array.
  if (is_array($value)) {
    $value = reset($value);
  }

  // Do nothing if the archiving is set to any of the FALSE values.
  if (empty($value)) {
    return;
  }

  // Load log entity metadata wrapper.
  $log_wrapper = entity_metadata_wrapper('log', $entity);

  // Iterate through the assets and archive them (if they aren't already).
  foreach ($log_wrapper->field_farm_asset as $asset_wrapper) {
    $asset = $asset_wrapper->value();
    if (empty($asset->archived)) {
      $asset->archived = REQUEST_TIME;
      farm_asset_save($asset);
    }
  }
}

/**
 * Helper function for generating standardized tamper plugin definitions.
 *
 * @param string $entity_type
 *   The entity type.
 * @param string $bundle
 *   The entity bundle.
 * @param string $source
 *   The name of the Feeds source (column header in CSV imports).
 * @param string $plugin
 *   The Feeds Tamper plugin machine name.
 * @param mixed $value
 *   A value to provide as input to certain plugins (ie: default_value).
 *
 * @return object
 *   Returns a Feeds Tamper plugin object.
 */
function farm_import_feeds_tamper_plugin($entity_type, $bundle, $source, $plugin, $value = NULL) {

  // Build the importer machine name.
  $importer = $entity_type . '_' . $bundle;

  // Generate a machine name from the source.
  $source_machine = feeds_tamper_make_machine($source);

  // Build the tamper plugin ID.
  $id = $importer . '-' . $source_machine . '-' . $plugin;

  // Build the description and settings based on the plugin type.
  $plugin_type = $plugin;
  switch ($plugin_type) {

    // Boolean.
    case 'boolean_default_true':
      $plugin_type = 'boolean_default';
      $description = 'Convert to boolean (with default)';
      $settings = array(
        'default_value' => TRUE,
      );
      break;

    case 'boolean_default_false':
      $plugin_type = 'boolean_default';
      $description = 'Convert to boolean (with default)';
      $settings = array(
        'default_value' => FALSE,
      );
      break;

    // Explode.
    case 'explode':
      $description = 'Explode';
      $settings = array(
        'separator' => ',',
        'limit' => '',
        'real_separator' => ',',
      );
      break;

    // Find and replace.
    case 'find_replace':
      $description = 'Find replace';
      $settings = array(
        'find' => !empty($value['find']) ? $value['find'] : '',
        'replace' => !empty($value['replace']) ? $value['replace'] : '',
        'case_sensitive' => 0,
        'word_boundaries' => 0,
        'whole' => 0,
        'regex' => FALSE,
        'func' => 'str_ireplace',
      );
      break;

    // Required.
    case 'required':
      $description = 'Required field';
      $settings = array(
        'invert' => 0,
        'log' => 1,
      );
      break;

    // String to Unix timestamp.
    case 'strtotime':
      $description = 'String to Unix timestamp';
      $settings = array();
      break;

    // Unix timestamp to date.
    case 'timetodate':
      $description = 'Unix timestamp to Date';
      $settings = array(
        'date_format' => 'Y-m-d',
      );
      break;

    // Trim whitespace.
    case 'trim':
      $description = 'Trim';
      $settings = array(
        'mask' => '',
        'side' => 'trim',
      );
      break;

    // Empty defaults.
    default:
      $description = '';
      $settings = array();
  }

  // Build the plugin.
  $feeds_tamper = new stdClass();
  $feeds_tamper->disabled = FALSE; /* Edit this to true to make a default feeds_tamper disabled initially */
  $feeds_tamper->api_version = 2;
  $feeds_tamper->id = $id;
  $feeds_tamper->importer = $importer;
  $feeds_tamper->source = $source;
  $feeds_tamper->plugin_id = $plugin_type;
  $feeds_tamper->settings = $settings;
  $feeds_tamper->weight = 0;
  $feeds_tamper->description = $description;

  // Return the plugin.
  return $feeds_tamper;
}