<?php


/**
 * @file
 * Install hooks for Backup and Migrate.
 */


/**
 * Implementation of hook_requirements().
 */
function backup_migrate_requirements($phase) {
  $requirements = array();
  return $requirements;
}

/**
 * Implementation of hook_schema().
 */
function backup_migrate_schema() {
  $schema['backup_migrate_profiles'] = array(
    'fields' => array(
      'profile_id' => array(
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '0',
        'description' => t('The primary identifier for a profile.'),
      ),
      'name' => array(
        'description' => t('The name of the profile.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE
      ),
      'filename' => array(
        'description' => t('The base pattern (including unreplaced tokens) for the name of the backup file.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE
      ),
      'append_timestamp' => array(
        'description' => t('Append a timestamp to the filename.'),
        'type' => 'int',
        'size' => 'tiny',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0
      ),
      'timestamp_format' => array(
        'description' => t('The format of the timestamp.'),
        'type' => 'varchar',
        'length' => 14,
        'not null' => TRUE
      ),
      'filters' => array(
        'description' => t('The filter settings for the profile.'),
        'type' => 'text',
        'not null' => TRUE,
        'serialize' => TRUE,
        'serialized default' => 'a:0:{}',
      ),
    ),
    'primary key' => array('profile_id'),
  );
  $schema['backup_migrate_destinations'] = array(
    'fields' => array(
      'destination_id' => array(
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '0',
        'description' => t('The primary identifier for a profile.'),
      ),
      'name' => array(
        'description' => t('The name of the profile.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE
      ),
      'type' => array(
        'description' => t('The type of the destination.'),
        'type' => 'varchar',
        'length' => 32,
        'not null' => TRUE
      ),
      'location' => array(
        'description' => t('The the location string of the destination.'),
        'type' => 'text',
        'not null' => TRUE
      ),
      'settings' => array(
        'description' => t('Other settings for the destination.'),
        'type' => 'text',
        'not null' => TRUE,
        'serialize' => TRUE,
        'serialized default' => 'a:0:{}',
     ),
    ),
    'primary key' => array('destination_id'),
  );
  $schema['backup_migrate_schedules'] = array(
    'fields' => array(
      'schedule_id' => array(
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '0',
        'description' => t('The primary identifier for a profile.'),
      ),
      'name' => array(
        'description' => t('The name of the profile.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE
      ),
      'source_id' => array(
        'description' => t('The {backup_migrate_destination}.destination_id of the source to backup from.'),
        'type' => 'varchar',
        'length' => 255,
        'default' => 'db',
        'not null' => TRUE
      ),
      'destination_id' => array(
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '0',
        'description' => t('The {backup_migrate_destination}.destination_id of the destination to back up to.'),
      ),
      'profile_id' => array(
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '0',
        'description' => t('The primary identifier for a profile.'),
      ),
      'keep' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'description' => t('The number of backups to keep.'),
      ),
      'period' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'description' => t('The number of seconds between backups.'),
      ),
      'enabled' => array(
        'description' => t('Whether the schedule is enabled.'),
        'type' => 'int',
        'size' => 'tiny',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0
      ),
      'cron' => array(
        'description' => t('Whether the schedule should be run during cron.'),
        'type' => 'int',
        'size' => 'tiny',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0
      ),
    ),
    'primary key' => array('schedule_id'),
  );

  return $schema;
}

/**
 * Implementation of hook_install().
 */
function backup_migrate_install() {
  drupal_install_schema('backup_migrate');
  _backup_migrate_setup_database_defaults();
}

function _backup_migrate_setup_database_defaults() {
  require_once './'. drupal_get_path('module', 'backup_migrate') .'/backup_migrate.module';
  require_once './'. drupal_get_path('module', 'backup_migrate') .'/includes/crud.inc';
  require_once './'. drupal_get_path('module', 'backup_migrate') .'/includes/profiles.inc';
  require_once './'. drupal_get_path('module', 'backup_migrate') .'/includes/files.inc';

  if (variable_get("backup_migrate_file_name", NULL)) {
    $settings = array(
      'profile_id' => 'default',
      'filename' => variable_get("backup_migrate_file_name", _backup_migrate_default_filename()),
      'append_timestamp' => variable_get("backup_migrate_append_timestamp", FALSE) ? 1 : 0,
      'timestamp_format' => variable_get("backup_migrate_timestamp_format", 'Y-m-d\TH-i-s'),
      'filters' => array(
        'compression' => variable_get("backup_migrate_compression", "none"),
        'exclude_tables' => variable_get("backup_migrate_exclude_tables", array()),
        'nodata_tables' => variable_get("backup_migrate_nodata_tables", array()),
      ),
      'name' => t('Default Settings'),
    );
    $profile = backup_migrate_crud_create_item('profile', $settings);
    $profile->save();
    variable_set("backup_migrate_profile_id", 'default');

    // Set up the default schedules.
    if (variable_get("backup_migrate_schedule_backup_period", 0)) {
      require_once './'. drupal_get_path('module', 'backup_migrate') .'/includes/schedules.inc';
      $schedule = array(
        'name' => t('Default Schedule'),
        'profile_id' => $profile->get_id(),
        'enabled' => 1,
        'destination_id' => 'scheduled',
        'period' => array('number' => variable_get("backup_migrate_schedule_backup_period", 0), 'type' => 'hours'),
        'keep' => variable_get("backup_migrate_schedule_backup_keep", 0),
      );
      $schedule = backup_migrate_crud_create_item('schedule', $schedule);
      $schedule->save();
    }
  }
}

/**
 * Remove variables on uninstall.
 */
function backup_migrate_uninstall() {
  drupal_uninstall_schema('backup_migrate');

  db_query("DELETE FROM {variable} WHERE name LIKE 'backup_migrate_%'");
  cache_clear_all('variables', 'cache');
}

/**
 * Update from 1.x to 2.x.
 */
function backup_migrate_update_2000() {
  // Updating from version 1.x, need to populate the db.
  drupal_install_schema('backup_migrate');
  _backup_migrate_setup_database_defaults();
  return array();
}

/**
 * Adding filter field for dev release of 2009-01-28
 */
function backup_migrate_update_2001() {
  $ret = array();
  $schema = drupal_get_schema_unprocessed('backup_migrate', 'backup_migrate_profiles');

  // Add the filters field to the db.
  if (!db_column_exists('backup_migrate_profiles', 'filters')) {
    db_add_field($ret, 'backup_migrate_profiles', 'filters', array('description' => t('The filter settings for the profile.'),'type' => 'text', 'not null' => TRUE));
  }
  // Add the source field
  if (!db_column_exists('backup_migrate_profiles', 'source_id')) {
    db_add_field($ret, 'backup_migrate_profiles', 'source_id', array('description' => t('The {backup_migrate_destination}.destination_id of the source to backup from.'), 'type' => 'varchar', 'length' => 255, 'default' => 'db', 'not null' => TRUE));
  }
  // Remove the compression field.
  if (db_column_exists('backup_migrate_profiles', 'compression')) {
    db_drop_field($ret, 'backup_migrate_profiles', 'compression');
  }
  return $ret;
}

/**
 * Clearing the cache because there was a menu structure change in the dev of 2009-05-31
 */
function backup_migrate_update_2002() {
  // Cache should clear automatically. Nothing to do here.
  return array();
}

/**
 * Allowing non-int profile ids in schedules 2009-05-31
 */
function backup_migrate_update_2003() {
  $ret = array();
  $spec = array(
    'type' => 'varchar',
    'length' => 255,
    'not null' => TRUE,
    'default' => '0',
    'description' => t('The primary identifier for a profile.'),
  );

  db_change_field($ret, 'backup_migrate_schedules', 'profile_id', 'profile_id', $spec);
  return $ret;
}

/**
 * Allowing non-int profile ids 2009-07-01
 */
function backup_migrate_update_2004() {
  $ret = array();
  $spec = array(
    'type' => 'varchar',
    'length' => 255,
    'not null' => TRUE,
    'default' => '0',
  );

  $spec['description'] = t('The primary identifier for a destination.');
  db_change_field($ret, 'backup_migrate_destinations', 'destination_id', 'destination_id', $spec);

  $spec['description'] = t('The primary identifier for a profile.');
  db_change_field($ret, 'backup_migrate_profiles', 'profile_id', 'profile_id', $spec);

  $spec['description'] = t('The primary identifier for a schedule.');
  db_change_field($ret, 'backup_migrate_schedules', 'schedule_id', 'schedule_id', $spec);

  // Drop the user/pass fields as they weren't being used.
  if (db_column_exists('backup_migrate_destinations', 'username')) {
    db_drop_field($ret, 'backup_migrate_destinations', 'username');
  }
  if (db_column_exists('backup_migrate_destinations', 'password')) {  
    db_drop_field($ret, 'backup_migrate_destinations', 'password');
  }

  return $ret;
}

/**
 * Change the default database id to something friendlier 2009-08-08
 */
function backup_migrate_update_2005() {
  require_once './'. drupal_get_path('module', 'backup_migrate') .'/includes/crud.inc';
  require_once './'. drupal_get_path('module', 'backup_migrate') .'/includes/profiles.inc';

  $ret = array();
  // Change the destination ids of the defined database sources mostly to make using them with drush friendlier.

  // Change the db_url:default id to simply 'db'
  $ret[] = update_sql("UPDATE {backup_migrate_profiles} SET source_id = 'db' WHERE source_id = 'db_url:default'");
  $ret[] = update_sql("UPDATE {backup_migrate_schedules} SET destination_id = 'db' WHERE destination_id = 'db_url:default'");

  // Change the defined db keys from db_url:key to db:key.
  $ret[] = update_sql("UPDATE {backup_migrate_profiles} SET source_id = REPLACE(source_id, 'db_url:', 'db:')");
  $ret[] = update_sql("UPDATE {backup_migrate_schedules} SET destination_id = REPLACE(destination_id, 'db_url:', 'db:')");

  // Add the source field to the schedule
  if (!db_column_exists('backup_migrate_schedules', 'source_id')) {
    db_add_field($ret, 'backup_migrate_schedules', 'source_id', array('description' => t('The db source to backup from.'), 'type' => 'varchar', 'length' => 255, 'default' => 'db', 'not null' => TRUE));
  }

  // Copy source data from profiles to schedules.
  $result = db_query('SELECT p.source_id, s.schedule_id FROM {backup_migrate_schedules} s LEFT JOIN {backup_migrate_profiles} p ON s.profile_id = p.profile_id');
  while ($schedule = db_fetch_array($result)) {
    if (!$schedule['source_id']) {
      $schedule['source_id'] = 'db';
    }
    $ret[] = update_sql("UPDATE {backup_migrate_schedules} SET source_id = '". $schedule['source_id'] ."' WHERE schedule_id = '". $schedule['profile_id'] ."'");
  }

  if (db_column_exists('backup_migrate_profiles', 'source_id')) {
    db_drop_field($ret, 'backup_migrate_profiles', 'source_id');
  }

  // Copy the no-data and exclude tables settings into the 'filter' field.
  $result = db_query('SELECT * FROM {backup_migrate_profiles}');
  while ($item = db_fetch_array($result)) {
    if (isset($item['nodata_tables']) && isset($item['exclude_tables'])) {
      $profile = backup_migrate_get_profile($item['profile_id']);
      $profile->filters['nodata_tables'] = unserialize($item['nodata_tables']);
      $profile->filters['exclude_tables'] = unserialize($item['exclude_tables']);
      $profile->save();
    }
  }
  if (db_column_exists('backup_migrate_profiles', 'nodata_tables')) {
    db_drop_field($ret, 'backup_migrate_profiles', 'nodata_tables');
  }
  if (db_column_exists('backup_migrate_profiles', 'exclude_tables')) {
    db_drop_field($ret, 'backup_migrate_profiles', 'exclude_tables');
  }

  return $ret;
}

/**
 * Change the filename field to support 255 characters.
 */
function backup_migrate_update_2006() {
  $ret = array();
  db_change_field($ret, 'backup_migrate_profiles', 'filename', 'filename', array('type' => 'varchar', 'length' => 255, 'not null' => TRUE));
  return $ret;
}


/**
 * Update the schedule last run times to use variables instead of saving with the schedule.
 */
function backup_migrate_update_6200() {
  $ret = array();
  $result = db_query('SELECT * FROM {backup_migrate_schedules}', array());
  while ($item = db_fetch_array($result)) {
    if (isset($item['last_run'])) {
      variable_set('backup_migrate_schedule_last_run_' . $item['schedule_id'], $item['last_run']);
    }
  }
  if (db_column_exists('backup_migrate_schedules', 'last_run')) {
    db_drop_field($ret, 'backup_migrate_schedules', 'last_run');
  }
  return $ret;
}


/**
 * Disable the NodeSquirrel module if it's installed.
 */
function backup_migrate_update_6201() {
  if (module_exists('nodesquirrel')) {
    module_disable(array('nodesquirrel'));
    drupal_set_message(t("The NodeSquirrel module was disabled. NodeSquirrel support is now built into Backup and Migrate."));
  }
  return array();
}

/**
 * Increase the length of all ids to 255.
 */
function backup_migrate_update_6205() {
  $schema['backup_migrate_profiles'] = array(
    'fields' => array(
      'profile_id' => array(
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '0',
        'description' => t('The primary identifier for a profile.'),
      ),
      'filename' => array(
        'description' => t('The base pattern (including unreplaced tokens) for the name of the backup file.'),
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE
      ),
    ),
  );
  $schema['backup_migrate_destinations'] = array(
    'fields' => array(
      'destination_id' => array(
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '0',
        'description' => t('The primary identifier for a profile.'),
      ),
    ),
  );
  $schema['backup_migrate_schedules'] = array(
    'fields' => array(
      'schedule_id' => array(
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '0',
        'description' => t('The primary identifier for a profile.'),
      ),
      'source_id' => array(
        'description' => t('The {backup_migrate_destination}.destination_id of the source to backup from.'),
        'type' => 'varchar',
        'length' => 255,
        'default' => 'db',
        'not null' => TRUE
      ),
      'destination_id' => array(
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '0',
        'description' => t('The {backup_migrate_destination}.destination_id of the destination to back up to.'),
      ),
      'profile_id' => array(
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '0',
        'description' => t('The primary identifier for a profile.'),
      ),
    ),
  );

  $fields = array(
    'backup_migrate_profiles' => array('profile_id'),
    'backup_migrate_destinations' => array('destination_id'),
    'backup_migrate_schedules' => array('schedule_id', 'source_id', 'destination_id', 'profile_id'),
  );

  $ret = array();

  // Update the length of each of the ids
  foreach ($schema as $table => $ids) {
    foreach ($ids['fields'] as $field => $spec) {
      db_change_field($ret, $table, $field, $field, $spec);
    }
  }
  return $ret;
}