<?php

/**
 * @file
 * Installation file for i18nblocks module.
 */

/**
 * Implements hook_install()
 */
function i18n_block_install() {
  module_load_install('i18n');
  i18n_install_create_fields('block', array('i18n_mode'));
  // Set module weight for it to run after all block visibility modules have run
  db_query("UPDATE {system} SET weight = 100 WHERE name = 'i18n_block' AND type = 'module'");
  // If updating from D6, module changed name
  if (variable_get('i18n_drupal6_update')) {
    i18n_block_update_7000();
  }
}

/**
 * Implements hook_uninstall()
 */
function i18n_block_uninstall() {
  db_drop_field('block', 'i18n_mode');
}

/**
 * Implements hook_schema().
 */
function i18n_block_schema() {
  $schema['i18n_block_language'] = array(
    'description' => 'Sets block visibility based on language',
    'fields' => array(
      'module' => array(
        'type' => 'varchar',
        'length' => 64,
        'not null' => TRUE,
        'description' => "The block's origin module, from {block}.module.",
      ),
      'delta' => array(
        'type' => 'varchar',
        'length' => 32,
        'not null' => TRUE,
        'description' => "The block's unique delta within module, from {block}.delta.",
      ),
      'language' => array(
        'type' => 'varchar',
        'length' => 12,
        'not null' => TRUE,
        'default' => '',
        'description' => "Language code, e.g. 'de' or 'en-US'.",
      ),
    ),
    'primary key' => array('module', 'delta', 'language'),
    'indexes' => array(
      'language' => array('language'),
    ),
  );
  return $schema;
}

/**
 * Implements hook_schema_alter().
 * 
 * Add block table i18n_mode field
 */
function i18n_block_schema_alter(&$schema) {
  $schema['block']['fields']['i18n_mode'] = array('type' => 'int', 'not null' => TRUE, 'default' => 0, 'description' => 'Block multilingual mode.');
}

/**
 * Drupal 6 update from old i18nblocks module.
 */
function i18n_block_update_7000() {
// D6-D7 updates, to be written
// move block language from i18n_blocks into i18n_block_language
// Move block type from i18n_blocks into block table (i18n_mode)
  if (db_table_exists('i18n_blocks')) {
    foreach (db_query("SELECT * FROM {i18n_blocks}")->fetchAll() as $block) {
      if ($block->language) {
        // Set language for block
        db_merge('i18n_block_language')
          ->key(array('module' => $block->module, 'delta' => $block->delta))
          ->fields(array('language' => $block->language))
          ->execute();
      }
      else {
        // Mark block as translatable
        db_update('block')
          ->fields(array('i18n_mode' => 1))
          ->condition('module', $block->module)
          ->condition('delta', $block->delta)
          ->execute();
      }
    }
    // @todo Drop table if everything is ok
  }
}