<?php
// $Id$

/**
 * @file
 * Install, update and uninstall functions for the image module.
 */

/**
 * Implements hook_install().
 */
function image_install() {
  // Create the styles directory and ensure it's writable.
  $path = file_directory_path() . '/styles';
  file_prepare_directory($path, FILE_CREATE_DIRECTORY | FILE_MODIFY_PERMISSIONS);
}

/**
 * Implements hook_uninstall().
 */
function image_uninstall() {
  // Remove the styles directory and generated images.
  $path = file_directory_path() . '/styles';
  file_unmanaged_delete_recursive($path);
}

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

  $schema['cache_image'] = drupal_get_schema_unprocessed('system', 'cache');
  $schema['cache_image']['description'] = 'Cache table used to store information about image manipulations that are in-progress.';

  $schema['image_styles'] = array(
    'description' => 'Stores configuration options for image styles.',
    'fields' => array(
      'isid' => array(
        'description' => 'The primary identifier for an image style.',
        'type' => 'serial',
        'unsigned' => TRUE,
        'not null' => TRUE,
      ),
      'name' => array(
        'description' => 'The style name.',
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
      ),
    ),
    'primary key' => array('isid'),
    'indexes' => array(
      'name' => array('name'),
    ),
  );

  $schema['image_effects'] = array(
    'description' => 'Stores configuration options for image effects.',
    'fields' => array(
      'ieid' => array(
        'description' => 'The primary identifier for an image effect.',
        'type' => 'serial',
        'unsigned' => TRUE,
        'not null' => TRUE,
      ),
      'isid' => array(
        'description' => 'The {image_styles}.isid for an image style.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
      ),
      'weight' => array(
        'description' => 'The weight of the effect in the style.',
        'type' => 'int',
        'unsigned' => FALSE,
        'not null' => TRUE,
        'default' => 0,
      ),
      'name' => array(
        'description' => 'The unique name of the effect to be executed.',
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
      ),
      'data' => array(
        'description' => 'The configuration data for the effect.',
        'type' => 'text',
        'not null' => TRUE,
        'size' => 'big',
        'serialize' => TRUE,
      ),
    ),
    'primary key' => array('ieid'),
    'indexes' => array(
      'isid' => array('isid'),
      'weight' => array('weight'),
    ),
    'foreign keys' => array(
      'isid' => array('image_styles' => 'isid'),
    ),
  );

  return $schema;
}

/**
 * Install the schema for users upgrading from the contributed module.
 */
function image_update_7000() {
  if (!db_table_exists('image_styles')) {
    $schema = array();

    $schema['cache_image'] = drupal_get_schema_unprocessed('system', 'cache');
    $schema['cache_image']['description'] = 'Cache table used to store information about image manipulations that are in-progress.';

    $schema['image_styles'] = array(
      'description' => 'Stores configuration options for image styles.',
      'fields' => array(
        'isid' => array(
          'description' => 'The primary identifier for an image style.',
          'type' => 'serial',
          'unsigned' => TRUE,
          'not null' => TRUE,
        ),
        'name' => array(
          'description' => 'The style name.',
          'type' => 'varchar',
          'length' => 255,
          'not null' => TRUE,
        ),
      ),
      'primary key' => array('isid'),
      'indexes' => array(
        'name' => array('name'),
      ),
    );

    $schema['image_effects'] = array(
      'description' => 'Stores configuration options for image effects.',
      'fields' => array(
        'ieid' => array(
          'description' => 'The primary identifier for an image effect.',
          'type' => 'serial',
          'unsigned' => TRUE,
          'not null' => TRUE,
        ),
        'isid' => array(
          'description' => 'The {image_styles}.isid for an image style.',
          'type' => 'int',
          'unsigned' => TRUE,
          'not null' => TRUE,
          'default' => 0,
        ),
        'weight' => array(
          'description' => 'The weight of the effect in the style.',
          'type' => 'int',
          'unsigned' => FALSE,
          'not null' => TRUE,
          'default' => 0,
        ),
        'name' => array(
          'description' => 'The unique name of the effect to be executed.',
          'type' => 'varchar',
          'length' => 255,
          'not null' => TRUE,
        ),
        'data' => array(
          'description' => 'The configuration data for the effect.',
          'type' => 'text',
          'not null' => TRUE,
          'size' => 'big',
          'serialize' => TRUE,
        ),
      ),
      'primary key' => array('ieid'),
      'indexes' => array(
        'isid' => array('isid'),
        'weight' => array('weight'),
      ),
      'foreign keys' => array(
        'isid' => array('image_styles' => 'isid'),
      ),
    );
    db_create_table('cache_image', $schema['cache_image']);
    db_create_table('image_styles', $schema['image_styles']);
    db_create_table('image_effect', $schema['image_effects']);
  }
}