29 lines
777 B
JavaScript
29 lines
777 B
JavaScript
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const {slugify} = require('@tryghost/string');
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const ValueObject = require('../../shared/ValueObject');
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const InvalidOfferCode = require('../../errors').InvalidOfferCode;
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/** @extends ValueObject<string> */
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class OfferCode extends ValueObject {
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/** @param {unknown} code */
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static create(code) {
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if (!code || typeof code !== 'string') {
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throw new InvalidOfferCode({
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message: 'Offer `code` must be a string.'
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});
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}
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const slugged = slugify(code);
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if (slugged.length > 191) {
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throw new InvalidOfferCode({
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message: 'Offer `code` can be a maximum of 191 characters.'
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});
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}
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return new OfferCode(slugged);
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}
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}
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module.exports = OfferCode;
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