"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.addRegistries = addRegistries;
exports.register = register;
exports.registryFactory = registryFactory;
/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the Elastic License
 * 2.0 and the Server Side Public License, v 1; you may not use this file except
 * in compliance with, at your election, the Elastic License 2.0 or the Server
 * Side Public License, v 1.
 */

/**
 * Add a new set of registries to an existing set of registries.
 *
 * @param {*} registries - The existing set of registries
 * @param {*} newRegistries - The new set of registries
 */
function addRegistries(registries, newRegistries) {
  Object.keys(newRegistries).forEach(registryName => {
    if (registries[registryName]) {
      throw new Error(`There is already a registry named "${registryName}".`);
    }
    registries[registryName] = newRegistries[registryName];
  });
  return registries;
}

/**
 * Register a set of interpreter specs (functions, types, renderers, etc)
 *
 * @param {*} registries - The set of registries
 * @param {*} specs - The specs to be regsitered (e.g. { types: [], browserFunctions: [] })
 */
function register(registries, specs) {
  Object.keys(specs).forEach(registryName => {
    if (!registries[registryName]) {
      throw new Error(`There is no registry named "${registryName}".`);
    }
    if (!registries[registryName].register) {
      throw new Error(`Registry "${registryName}" must have a register function.`);
    }
    specs[registryName].forEach(f => registries[registryName].register(f));
  });
  return registries;
}

/**
 * A convenience function for exposing registries and register in a plugin-friendly way
 * as a global in the browser, and as server.plugins.interpreter.register | registries
 * on the server.
 *
 * @param {*} registries - The registries to wrap.
 */
function registryFactory(registries) {
  return {
    // This is a getter function. We can't make it a property or a proper
    // getter, because Kibana server will improperly clone it.
    registries() {
      return registries;
    },
    register(specs) {
      return register(registries, specs);
    }
  };
}