<?php
/**
 * @file
 * Install, update and uninstall functions for the galleria module.
 */

/**
 * Implements hook_schema().
 * Always returns the latest schema version!
 */
function galleria_schema() {
  return array(
    'galleria_optionset' => array(
      'description' => 'Store option sets for Galleria instances.',
      'fields' => array(
        'name' => array(
          'description' => 'The machine-readable option set name.',
          'type' => 'varchar',
          'length' => 255,
          'not null' => TRUE,
        ),
        'title' => array(
          'description' => 'The human-readable title for this option set.',
          'type' => 'varchar',
          'length' => 255,
          'not null' => TRUE,
        ),
        'theme' => array(
          'description' => 'The Galleria theme.',
          'type' => 'varchar',
          'length' => 255,
          'not null' => TRUE,
          'default' => 'classic',
        ),
        'plugins' => array(
          'description' => 'The Galleria plugins to be loaded.',
          'type' => 'blob',
          'size' => 'big',
          'serialize' => TRUE,
        ),
        'imagestyle_thumb' => array(
          'description' => 'The image style for thumbnails.',
          'type' => 'varchar',
          'length' => 255,
          'not null' => TRUE,
          'default' => 'galleria_thumb',
        ),
        'imagestyle_normal' => array(
          'description' => 'The image style for normal images.',
          'type' => 'varchar',
          'length' => 255,
          'not null' => TRUE,
          'default' => 'galleria_zoom',
        ),
        'imagestyle_big' => array(
          'description' => 'The image style for big images (lightbox and fullscreen).',
          'type' => 'varchar',
          'length' => 255,
          'not null' => TRUE,
          'default' => '', // original image
        ),
        'options' => array(
          'description' => 'The options array.',
          'type' => 'blob',
          'size' => 'big',
          'serialize' => TRUE,
        ),
      ),
      'primary key' => array('name'),
    ),
  );
}

/**
 * Create the first version of the new database schema.
 */
function galleria_update_7000() {
  // Warning: Code duplication intended! Do not use galleria_schema() here, see http://drupal.org/node/150220
  if (!db_table_exists('galleria_optionset')) {
    // Create optionset table
    db_create_table('galleria_optionset', array(
      'description' => 'Store option sets for Galleria instances.',
      'fields' => array(
        'name' => array(
          'description' => 'The machine-readable option set name.',
          'type' => 'varchar',
          'length' => 255,
          'not null' => TRUE,
        ),
        'title' => array(
          'description' => 'The human-readable title for this option set.',
          'type' => 'varchar',
          'length' => 255,
          'not null' => TRUE,
        ),
        'options' => array(
          'description' => 'The options array.',
          'type' => 'blob',
          'size' => 'big',
          'serialize' => TRUE,
        ),
      ),
      'primary key' => array('name'),
    ));

    // Migrate old variable-based options into the optionset table
    $oldvars = array(
      // old_var_name   => array(old_default_value, new_var_name, new_default_value),
      'height'          => array( 300,   'height',         NULL),
      'width'           => array( 450,   'width',          NULL),
      'autoplay'        => array(   0,   'autoplay',       0),
      'clicknext'       => array(TRUE,   'clicknext',      FALSE),
      'imagecrop'       => array('on',   'imageCrop',      'false'),
      'max_scale_ratio' => array(   1,   'maxScaleRatio',  NULL),
      'min_scale_ratio' => array(   1,   'minScaleRatio',  NULL),
      'overlay_opacity' => array(0.85,   'overlayOpacity', 0.85),
      'preload'         => array(   3,   'preload',        2),
      'queue'           => array(TRUE,   'queue',          TRUE),
      'show_counter'    => array(TRUE,   'showCounter',    TRUE),
      'show_imagenav'   => array(TRUE,   'showImagenav',   TRUE),
      'show_info'       => array(TRUE,   'showInfo',       TRUE),
      'thumbnails'      => array('on',   'thumbnails',     'true'),
      'transition'      => array('fade', 'transition',     'fade'),
      'lib_file'        => FALSE, // just delete this variable
    );
    $options = array();
    foreach ($oldvars as $oldvar => $data) {
      if (is_array($data)) {
        $value = variable_get('galleria_' . $oldvar, $data[0]);
        $value = ($value == 'on') ? 'true' : ($value == 'off' ? 'false' : $value);
        if ($value != $data[2])
          $options[$data[1]] = $value;
      }
      variable_del('galleria_' . $oldvar);
    }
    db_insert('galleria_optionset')->fields(array(
      'name' => 'default',
      'title' => 'Default',
      'options' => serialize($options),
    ))->execute();
  }
}

/**
 * Integrate image style settings into the option sets.
 */
function galleria_update_7001() {
  $new_fields = array(
    'theme' => array(
      'description' => 'The Galleria theme.',
      'type' => 'varchar',
      'length' => 255,
      'not null' => TRUE,
      'default' => 'classic',
    ),
    'imagestyle_thumb' => array(
      'description' => 'The image style for thumbnails.',
      'type' => 'varchar',
      'length' => 255,
      'not null' => TRUE,
      'default' => 'galleria_thumb',
    ),
    'imagestyle_normal' => array(
      'description' => 'The image style for normal images.',
      'type' => 'varchar',
      'length' => 255,
      'not null' => TRUE,
      'default' => 'galleria_zoom',
    ),
    'imagestyle_big' => array(
      'description' => 'The image style for big images (lightbox and fullscreen).',
      'type' => 'varchar',
      'length' => 255,
      'not null' => TRUE,
      'default' => '', // original image
    ),
  );
  foreach ($new_fields as $field => $spec) {
    db_add_field('galleria_optionset', $field, $spec);
  }
  return t('You have to re-adjust the theme and image styles for your Galleria instances.');
}

/**
 * Updates renamed field formatter settings.
 */
function galleria_update_7002() {
  drupal_load('module', 'field');

  foreach (field_info_instances('node') as $node_type => $field_instances) {
    foreach ($field_instances as $field_instance) {
      $changed = FALSE;
      foreach ($field_instance['display'] as &$display) {
        if (($display['module'] == 'galleria') && ($display['type'] == 'galleria')) {
          $settings = &$display['settings'];
          $settings['optionset'] = $settings['galleria_optionset'];
          unset($settings['galleria_optionset']);
          unset($settings['galleria_reference_img_src']);
          $changed = TRUE;
        }
      }
      if ($changed) {
        field_update_instance($field_instance);
      }
    }
  }
}

/**
 * Add support for Galleria plugins.
 */
function galleria_update_7003() {
  $new_fields = array(
    'plugins' => array(
      'description' => 'The Galleria plugins to be loaded.',
      'type' => 'blob',
      'size' => 'big',
      'serialize' => TRUE,
    ),
  );
  foreach ($new_fields as $field => $spec) {
    db_add_field('galleria_optionset', $field, $spec);
  }
  return t('You may now select plugins to be loaded with each Galleria instance.');
}


/**
 * Implements hook_install().
 * Adds a 'default' option set for fresh installs.
 */
function galleria_install() {
  $optionset = array(
    'name' => 'default',
    'title' => 'Default',
    'options' => array(
      'height' => 300,
      'width' => 450,
    ),
  );
  galleria_optionset_save($optionset, TRUE);
}