/**
 * @fileoverview The instance of Ajv validator.
 * @author Evgeny Poberezkin
 */
'use strict';

//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------

const Ajv = require('ajv'),
  metaSchema = require('ajv/lib/refs/json-schema-draft-04.json');

//------------------------------------------------------------------------------
// Public Interface
//------------------------------------------------------------------------------

module.exports = (additionalOptions = {}) => {
  const ajv = new Ajv({
    meta: false,
    useDefaults: true,
    validateSchema: false,
    missingRefs: 'ignore',
    verbose: true,
    schemaId: 'auto',
    ...additionalOptions,
  });

  ajv.addMetaSchema(metaSchema);
  // eslint-disable-next-line no-underscore-dangle -- Ajv's API
  ajv._opts.defaultMeta = metaSchema.id;

  return ajv;
};