import * as mongoose from "mongoose";
import { IDocumentValidator } from "./IDocumentValidator";
import {
  DocumentValidator,
  IDocumentValidatorOptions
} from "./DocumentValidator";
import { HookNextFunction } from "mongoose";

export interface IValidatableOptions extends IDocumentValidatorOptions {
  validator?: IDocumentValidator;
}

/**
 * mongoose model plugin to create the pre validate hook that performs
 * the validates based on the models schema and extra logic.
 *
 * @param {mongoose.Schema} schema
 * @param {IValidatableOptions} options
 */
export function validatable(
  schema: mongoose.Schema,
  options: IValidatableOptions = {}
) {
  const validator = options.validator || new DocumentValidator(schema, options);

  schema.pre("validate", function(next: HookNextFunction) {
    validator
      .validate(this)
      .then(() => next())
      .catch((err: Error) => next(err));
  });
}

export * from "./config";
export * from "./DocumentValidator";
export * from "./IDocumentValidator";