// Import types
import CollectionProcedure from './CollectionProcedure';
import Id from '../types/Id';

/**
 * Interface for mutable, concurrent update patterns.
 * Pass in a closure which executes any number of methods on the collection.
 * @author Benedikt Arnarsson
 */
interface CoconutInterface<DocumentType> {
  /**
   * Given a function representing a set of operations on the collection and a set of ids to lock,
   * will run the function such that other collections cannot make modifications while the function runs.
   * For use in situations with multiple concurrent servers using the same database.
   * @author Benedikt Arnarsson
   * @param opts object containing all parameters
   * @param opts.idOrIdsToLock the one Id or list of Ids to lock for the procedure provided.
   * @param opts.procedure the procedure that is being wrapped in the lock-unlock calls
   * @returns the result of opts.procedure
   */
  runAtomicProcedure<Result>(
    opts: {
      idOrIdsToLock: Id | Id[],
      procedure: CollectionProcedure<DocumentType, Result>,
    },
  ): Promise<Result>;
}

export default CoconutInterface;