const Joi = require('joi'); const findIndex = require('lodash/findIndex'); Joi.objectId = require('joi-objectid')(Joi); const schema = Joi.objectId(); const duplicatedProjectIds = [ 'bd7158d8c442eddfaeb5bd18', '587d78af367417b2b2512b03', '587d78af367417b2b2512b04', '587d78b0367417b2b2512b05', 'bd7158d8c242eddfaeb5bd13' ]; class MongoIds { constructor() { this.knownIds = []; } check(id, title) { try { schema.validate(id); } catch { throw Error(`Expected a valid ObjectId for ${title}, but got ${id}`); } const idIndex = findIndex(this.knownIds, existing => id === existing); if (idIndex !== -1 && !duplicatedProjectIds.includes(id)) { throw Error(`The id for challenge ${title} appears more than once. With the exception of duplicatedProjectIds this should not happen. `); } this.knownIds = [...this.knownIds, id]; } } module.exports = MongoIds;