25 lines
576 B
JavaScript
25 lines
576 B
JavaScript
const _ = require('lodash');
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const { isMongoId } = require('validator');
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class MongoIds {
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constructor() {
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this.knownIds = [];
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}
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check(id, title) {
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if (!isMongoId(id)) {
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throw new Error(`Expected a valid ObjectId for ${title}, but got ${id}`);
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}
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const idIndex = _.findIndex(this.knownIds, existing => id === existing);
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if (idIndex !== -1) {
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throw new Error(`
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All challenges must have a unique id.
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The id for ${title} is already assigned
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`);
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}
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this.knownIds = [...this.knownIds, id];
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}
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}
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module.exports = MongoIds;
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