/*
* This file is part of PKM (Persistent Knowledge Monitor).
* Copyright (c) 2020 Capgemini Group, Commissariat à l'énergie atomique et aux énergies alternatives,
* OW2, Sysgo AG, Technikon, Tree Technology, Universitat Politècnica de València.
*
* PKM is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3 as published by
* the Free Software Foundation.
*
* PKM is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with PKM. If not, see <https://www.gnu.org/licenses/>.
*/
/**
* Drop all collections
*
* @memberof PKM
* @instance
* @param {string} dbName - database name
*
* @return {Promise} a promise
*/
function drop_all_collections(dbName)
{
return new Promise(function(resolve, reject)
{
const db = this.client.db(dbName);
var collection_cursor = db.listCollections();
var promises = [];
collection_cursor.each((err, result) =>
{
if(err)
{
reject(this.Error(err));
}
else if(result)
{
const collection_name = result.name;
promises.push(db.dropCollection(collection_name));
}
});
Promise.all(promises).then(() =>
{
resolve();
}).catch((err) =>
{
reject(this.Error(err));
});
}.bind(this));
}
exports.drop_all_collections = drop_all_collections;