33 lines
859 B
JavaScript
33 lines
859 B
JavaScript
/* eslint-disable no-bitwise */
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// Simple hash function to convert UUID to an integer
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function hashUuid(uuid) {
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let hash = 0
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for (let i = 0; i < uuid.length; i++) {
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const char = uuid.charCodeAt(i)
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hash = (hash << 5) - hash + char
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hash &= hash // Convert to 32bit integer
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}
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return Math.abs(hash)
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}
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// Converts a hash number to a base-26 (alphabet) 3-letter code
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function hashTo3LetterCode(hash) {
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const alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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let code = ""
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for (let i = 0; i < 3; i++) {
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code += alphabet.charAt(hash % 26)
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hash = Math.floor(hash / 26)
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}
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return code
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}
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function uuidTo3LetterCode(uuid) {
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const hash = hashUuid(uuid)
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return hashTo3LetterCode(hash)
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}
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module.exports = uuidTo3LetterCode
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// const uuid = "123e4567-e89b-12d3-a456-426614174000"
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// const code = uuidTo3LetterCode(uuid)
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// console.log(code)
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