class MongoConnectionManager {
  public connected: boolean;

  public mongoConnectionString: string;

  private mongoose: any;

  private mongoConnectionStringInternal: string;

  constructor(mongoose: any, mongoConnectionString: string, username: string = '', password: string = '', dbName: string = '') {
    mongoose.set('strictQuery', false);
    const parsed = new URL(mongoConnectionString);

    if (username) parsed.username = username;
    if (password) parsed.password = password;
    parsed.pathname = `/${dbName}`;

    this.connected = false;
    this.mongoConnectionStringInternal = parsed.toString();

    // redact username/password from publicly available connection string
    parsed.username = '__user__';
    parsed.password = '__pass__';
    this.mongoConnectionString = parsed.toString();
    this.mongoose = mongoose;
  }

  public async connect(): Promise<boolean> {
    console.log(`Attempting to connect to Mongo DB address [${this.mongoConnectionString}]`);

    try {
      await this.mongoose.connect(this.mongoConnectionStringInternal, {
        useNewUrlParser: true,
      });
      console.log(`Connected to MongoDB: ${this.mongoConnectionString}`);
      return true;
    } catch (e) {
      console.error(`There was an error connecting to MongoDB: ${this.mongoConnectionString}`);
      console.error(e);
      console.error('Exiting...');
      process.exit(1);
      return false;
    }
  }
}

export default MongoConnectionManager;