const Joi = require('joi');

const slugRE = new RegExp('^[a-z0-9-]+$');

const schema = Joi.object()
  .keys({
    blockLayout: Joi.valid(
      'challenge-list',
      'challenge-grid',
      'dialogue-grid',
      'link',
      'project-list',
      'legacy-challenge-list',
      'legacy-link',
      'legacy-challenge-grid'
    ).required(),
    blockLabel: Joi.valid(
      'workshop',
      'lab',
      'lecture',
      'review',
      'quiz',
      'exam',
      'warm-up',
      'learn',
      'practice'
    ),
    isUpcomingChange: Joi.boolean().required(),
    dashedName: Joi.string().regex(slugRE).required(),
    usesMultifileEditor: Joi.boolean(),
    hasEditableBoundaries: Joi.boolean(),
    disableLoopProtectTests: Joi.boolean(),
    disableLoopProtectPreview: Joi.boolean(),
    template: Joi.string(),
    required: Joi.array()
      .items(
        Joi.object().keys({
          link: Joi.string(),
          raw: Joi.bool(),
          src: Joi.string()
        })
      )
      .min(1)
      .message(
        `'required' must contain at least one item or not exist. Add an item or delete the property`
      ),
    challengeOrder: Joi.array()
      .items(
        Joi.object().keys({
          id: Joi.string().required(),
          title: Joi.string().required()
        })
      )
      .min(1)
      .required(),
    helpCategory: Joi.valid(
      'JavaScript',
      'HTML-CSS',
      'Python',
      'Backend Development',
      'C-Sharp',
      'English',
      'Odin',
      'Euler',
      'Rosetta',
      'Chinese Curriculum',
      'Spanish Curriculum',
      'General'
    ).required()
  })
  // this makes sure there is no unknown key in the object
  .unknown(false);

exports.validateMetaSchema = meta => {
  return schema.validate(meta, { abortEarly: false });
};