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<?php

/**

 * @file

 * Installation file for i18n_string module.

 */

/**

 * Implements hook_enable().

 */

function i18n_string_enable() {

  // Refresh locales for enabled modules

  $modules = module_implements('i18n_string_refresh');

  i18n_string_modules_enabled($modules);

}

/**

 * Implements hook_install().

 */

function i18n_string_install() {

  // Add a field to track whether a translation needs updating.

  module_load_install('i18n');

  i18n_install_create_fields('locales_target', array('i18n_status'));

  // Set module weight for it to run after core modules.

  db_query("UPDATE {system} SET weight = 10 WHERE name = 'i18n_string' AND type = 'module'");

  // If updating from D6, module changed name

  if (variable_get('i18n_drupal6_update')) {

    i18n_string_update_7000();

    i18n_string_update_7001();

  }

  // Create new index in {locales_source}, performance improvement in sites with i18n.

  db_add_index('locales_source', 'textgroup_context', array('textgroup', 'context'));

}

/**

 * Implements hook_uninstall().

 */

function i18n_string_uninstall() {

  // Drop custom field.

  db_drop_field('locales_target', 'i18n_status');

  // Drop custom index in locales_source table

  db_drop_index('locales_source', 'textgroup_context');

}

/**

 * Implements hook_schema().

 */

function i18n_string_schema() {

  $schema['i18n_string'] = array(

    'description' => 'Metadata for source strings.',

    'fields' => array(

      'lid' => array(

        'type' => 'int',

        'not null' => TRUE,

        'default' => 0,

        'description' => 'Source string ID. References {locales_source}.lid.',

      ),

      'textgroup' => array(

        'type' => 'varchar',

        'length' => 50,

        'not null' => TRUE,

        'default' => 'default',

        'description' => 'A module defined group of translations, see hook_locale().',

      ),

      'context' => array(

        'type' => 'varchar',

        'length' => 255,

        'not null' => TRUE,

        'default' => '',

        'description' => 'Full string ID for quick search: type:objectid:property.',

      ),

      'objectid' => array(

        'type' => 'varchar',

        'length' => 255,

        'not null' => TRUE,

        'default' => '',

        'description' => 'Object ID.',

      ),

      'type' => array(

        'type' => 'varchar',

        'length' => 255,

        'not null' => TRUE,

        'default' => '',

        'description' => 'Object type for this string.',

      ),

      'property' => array(

        'type' => 'varchar',

        'length' => 255,

        'not null' => TRUE,

        'default' => '',

        'description' => 'Object property for this string.',

      ),

      'objectindex' => array(

        'type' => 'int',

        'not null' => TRUE,

        'default' => 0,

        'description' => 'Integer value of Object ID.',

      ),

      'format' => array(

        'type' => 'varchar',

        'length' => 255,

        'not null' => FALSE,

        'description' => 'The {filter_format}.format of the string.',

      ),

    ),

    'primary key' => array('lid'),

    'indexes' => array(

      'group_context' => array('textgroup', 'context'),

    ),

  );

  return $schema;

}

/**

 * Implements hook_schema_alter().

 */

function i18n_string_schema_alter(&$schema) {

  // Add field for tracking whether translations need updating.

  $schema['locales_target']['fields']['i18n_status'] = array(

    'description' => 'A boolean indicating whether this translation needs to be updated.',

    'type' => 'int',

    'not null' => TRUE,

    'default' => 0,

  );

}

/**

 * Helper function to upate strings

 */

function i18n_string_install_update_string($string) {

  $string->context = $string->type . ':' . $string->objectid . ':' . $string->property;

  $string->location = $string->textgroup . ':' . $string->context;

  $string->objectindex = (int)$string->objectid;

  drupal_write_record('i18n_string', $string, 'lid');

  drupal_write_record('locales_source', $string, 'lid');

}

/**

 * Update context for strings.

 *

 * As some string locations depend on configurable values, the field needs sometimes to be updated

 * without losing existing translations. I.e:

 * - profile fields indexed by field name.

 * - content types indexted by low level content type name.

 *

 * Example:

 *  'profile:field:oldfield:*' -> 'profile:field:newfield:*'

 */

function i18n_string_install_update_context($oldname, $newname) {

  // Get context replacing '*' with empty string.

  $oldcontext = explode(':', $oldname);

  $newcontext = explode(':', $newname);

  /*

  i18n_string_context(str_replace('*', '', $oldname));

  $newcontext = i18n_string_context(str_replace('*', '', $newname));

  */

  // Get location with placeholders.

  foreach (array('textgroup', 'type', 'objectid', 'property') as $index => $field) {

    if ($oldcontext[$index] != $newcontext[$index]) {

      $replace[$field] = $newcontext[$index];

    }

  }

  // Query and replace if there are any fields. It is possible that under some circumstances fields are the same

  if (!empty($replace)) {

    $textgroup = array_shift($oldcontext);

    $context = str_replace('*', '%', implode(':', $oldcontext));

    $count = 0;

    $query = db_select('i18n_string', 's')

      ->fields('s')

      ->condition('s.textgroup', $textgroup)

      ->condition('s.context', $context, 'LIKE');

    foreach ($query->execute()->fetchAll() as $source) {

      foreach ($replace as $field => $value) {

        $source->$field = $value;

      }

      // Recalculate location, context, objectindex

      $source->context = $source->type . ':' . $source->objectid . ':' . $source->property;

      $source->location = $source->textgroup . ':' . $source->context;

      $source->objectindex = (int)$source->objectid;

      // Update source string.

      $update = array(

        'textgroup' => $source->textgroup,

        'context' => $source->context,

      );

      db_update('locales_source')

        ->fields($update + array('location' => $source->location))

        ->condition('lid', $source->lid)

        ->execute();

      // Update object data.

      db_update('i18n_string')

      ->fields($update + array(

        'type' => $source->type,

        'objectid' => $source->objectid,

        'property' => $source->property,

        'objectindex' => $source->objectindex,

      ))

      ->condition('lid', $source->lid)

      ->execute();

      $count++;

    }

    drupal_set_message(t('Updated @count string names from %oldname to %newname.', array('@count' => $count, '%oldname' => $oldname, '%newname' => $newname)));

  }

}

/**

 * Populate fields from old locale table (textgroup, location) and drop indexes from locales_source

 */

function i18n_string_update_7000() {

  // @todo Update from d6

  variable_del('i18nstrings_allowed_textgroups');

  // If we've got old table from D6, move data to new one

  if (db_table_exists('i18n_strings')) {

    // First of all clean up strings that don't have a locale source, see http://drupal.org/node/1186692

    db_query("DELETE FROM {i18n_strings} WHERE lid NOT IN (SELECT lid FROM {locales_source})");

    db_query("INSERT INTO {i18n_string}(lid, objectid, type, property, objectindex, format) SELECT lid, objectid, type, property, objectindex, format FROM {i18n_strings}");

    // Update and populate textgroup field

    db_query("UPDATE {i18n_string} s SET s.textgroup = (SELECT l.textgroup FROM {locales_source} l WHERE l.lid = s.lid)");

    // Populate context field. We could use CONCAT_WS but I guess this is more standard.

    db_query("UPDATE {i18n_string} SET context = CONCAT(type, ':', objectid, ':', property)");

    db_query("UPDATE {locales_source} s INNER JOIN {i18n_string} i ON s.lid = i.lid SET s.context = i.context");

  }

}

/**

 * Drop obsoleted i18n_strings table if exists

 */

function i18n_string_update_7001() {

  if (db_table_exists('i18n_strings')) {

    db_drop_table('i18n_strings');

  }

}

/**

 *  Create new index in {locales_source}, performance improvement in sites with i18n.

 */

function i18n_string_update_7002() {

  db_add_index('locales_source', 'textgroup_context', array('textgroup', 'context'));

}

/**

 * Notes for update script

 */

// Added fields: context, textgroup

//

// Drop all indexes from locales_source

// Update format field

// Update string names: profile, cck => field

// Update string names:

/**

 * Old strings to update. All these will be handled by i18n_field module

 *

 * 'cck:field:'. $content_type .'-'. $field_name .':widget_label'

 *  --> 'field:$field_name:$bundle:label' (though not used atm)

 * 'cck:field:'. $content_type .'-'. $field_name .':widget_description'

 *  --> 'field:$field_name:$bundle:description'

 * 'cck:fieldgroup:'. $content_type .'-'. $group_name .':display_description'

 * 'cck:fieldgroup:'. $content_type .'-'. $group_name .':form_description', $group['settings']['form']['description']);

 *

 * Profile:

 * profile:field:$field_name:title|explanation|options

 * "profile:category", $field->category

 *

 * Node type

 *  nodetype:type:[type]:[property] -> node:type:[type]:[property]

 *  Property names: title -> title_label

 */