import { type Connection, DynamoDBConnection } from "./connections";

export default class Config {
  private static __defaultConnection: Connection;

  public static get defaultConnection(): Connection {
    if (this.__defaultConnection == null) {
      let credentials:
        | { accessKeyId: string; secretAccessKey: string }
        | undefined;

      if (
        typeof process.env.DYNAMO_ACCESS_KEY_ID === "string" &&
        typeof process.env.DYNAMO_SECRET_ACCESS_KEY === "string"
      ) {
        credentials = {
          accessKeyId: process.env.DYNAMO_ACCESS_KEY_ID,
          secretAccessKey: process.env.DYNAMO_SECRET_ACCESS_KEY,
        };
      }

      this.__defaultConnection = new DynamoDBConnection({
        endpoint: process.env.DYNAMO_ENDPOINT,
        region: process.env.DYNAMO_REGION,
        enableAWSXray: process.env.ENABLE_XRAY === "true",
        credentials,
      });
    }
    return this.__defaultConnection;
  }

  public static set defaultConnection(connection: Connection) {
    this.__defaultConnection = connection;
  }

  // this is to avoid a type error, but we should probably convert this class to something else
  public useless: boolean;
}