var mongoose = require('mongoose');

mongoose.Promise = global.Promise;

mongoose.level = "";

mongoose.plugin(schema => {
  schema.options.usePushEach = true
});

mongoose.set('debug', false);

var options = {
  // user: process.env.UDB,
  // pass: process.env.PDB,
  useMongoClient: true,
  useNewUrlParser: true,
  promiseLibrary: require('bluebird')

  // useCreateIndex: true,
  // useFindAndModify: false,
  // autoIndex: false, // Don't build indexes
  // reconnectTries: Number.MAX_VALUE, // Never stop trying to reconnect
  // reconnectInterval: 500, // Reconnect every 500ms
  // poolSize: 10, // Maintain up to 10 socket connections
  // // If not connected, return errors immediately rather than waiting for reconnect
  // bufferMaxEntries: 0,
  // connectTimeoutMS: 10000, // Give up initial connection after 10 seconds
  // socketTimeoutMS: 45000, // Close sockets after 45 seconds of inactivity
  // family: 4 // Use IPv4, skip trying IPv6

  // keepAlive: true,                // keepAlive is true by default since mongoose 5.2.0
  // keepAliveInitialDelay: 300000   // keepAliveInitialDelay is the number of milliseconds to wait before initiating keepAlive on the socket.
};



// mongoose.connect(process.env.MONGODB_URI + '?authSource=admin', { options })
mongoose.connect(process.env.MONGODB_URI, options)
  .then(() =>
    console.log('connection succesful ' + process.env.MONGODB_URI + ' db: ' + process.env.DATABASE)
  )
  .catch((err) => console.error(err));

module.exports = {mongoose};