/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */
import * as Joi from 'joi';
import {isValidPathname} from '@docusaurus/utils';

export const PluginIdSchema = Joi.string()
  .regex(/^[a-zA-Z_\-]+$/)
  // duplicate core constant, otherwise cyclic dependency is created :(
  .default('default');

const MarkdownPluginsSchema = Joi.array()
  .items(
    Joi.array().ordered(Joi.function().required(), Joi.object().required()),
    Joi.function(),
    Joi.object(),
  )
  .default([]);

export const RemarkPluginsSchema = MarkdownPluginsSchema;
export const RehypePluginsSchema = MarkdownPluginsSchema;

export const AdmonitionsSchema = Joi.object().default({});

export const URISchema = Joi.alternatives(
  Joi.string().uri({allowRelative: true}),
  Joi.custom((val, helpers) => {
    try {
      const url = new URL(val);
      if (url) {
        return val;
      } else {
        return helpers.error('any.invalid');
      }
    } catch {
      return helpers.error('any.invalid');
    }
  }),
);

export const PathnameSchema = Joi.string()
  .custom((val) => {
    if (!isValidPathname(val)) {
      throw new Error();
    } else {
      return val;
    }
  })
  .message(
    '{{#label}} is not a valid pathname. Pathname should start with / and not contain any domain or query string',
  );