<?php

/**
 * @file
 * Handles Advanced Aggregation installation and upgrade tasks.
 */

/**
 * @addtogroup hooks
 * @{
 */

/**
 * Implements hook_install().
 */
function advagg_sri_install() {
  module_load_include('install', 'advagg', 'advagg');
  $tables = array(
    'advagg_sri' => array(
      'filename',
    ),
  );

  $schema = advagg_sri_schema();
  foreach ($tables as $table => $fields) {
    // Change utf8_bin to ascii_bin.
    advagg_install_change_table_collation($table, $fields, 'ascii_bin', $schema[$table]['fields']);
  }
}

/**
 * Implements hook_uninstall().
 */
function advagg_sri_uninstall() {
  // Remove variables.
  db_delete('variable')
    ->condition('name', 'advagg_sri%', 'LIKE')
    ->execute();
}

/**
 * Implements hook_schema().
 */
function advagg_sri_schema() {
  $schema = array();

  // Copy the variable table and change a couple of things.
  $schema['advagg_sri'] = drupal_get_schema_unprocessed('system', 'variable');

  // Create the filename field.
  $schema['advagg_sri']['fields']['filename'] = $schema['advagg_sri']['fields']['name'];
  $schema['advagg_sri']['fields']['filename']['length'] = 143;
  $schema['advagg_sri']['fields']['filename']['description'] = 'The name of the aggregate.';
  $schema['advagg_sri']['fields']['filename']['binary'] = TRUE;
  $schema['advagg_sri']['fields']['filename']['collation'] = 'ascii_bin';
  $schema['advagg_sri']['fields']['filename']['charset'] = 'ascii';
  $schema['advagg_sri']['fields']['filename']['mysql_character_set'] = 'ascii';

  // Create the hashes field.
  $schema['advagg_sri']['fields']['hashes'] = $schema['advagg_sri']['fields']['value'];
  $schema['advagg_sri']['fields']['hashes']['description'] = 'The hashes associated with this filename.';

  // Set primary key and table description.
  $schema['advagg_sri']['description'] = 'Stores sha hashes of this file.';
  $schema['advagg_sri']['primary key'][0] = 'filename';

  // Remove the name and value fileds.
  unset($schema['advagg_sri']['fields']['name'], $schema['advagg_sri']['fields']['value']);

  return $schema;
}

/**
 * @} End of "addtogroup hooks".
 */