46 lines
1.6 KiB
JavaScript
46 lines
1.6 KiB
JavaScript
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const errorHandling = require('../../utils/errorHandling');
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const { requiredFields } = require('../../config/errors');
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const formatNumberResult = require('../secondary/formatNumberResult');
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/**
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* @description Calcule les counter premiers nombres de la suite de fibonacci.
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* @param {number} counter
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*/
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function fibonacci(counter, result = [], a = 0, b = 1) {
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if (counter === 0) {
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return result;
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}
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counter--;
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result.push(a);
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return fibonacci(counter, result, b, a + b);
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}
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/* OUTPUTS */
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module.exports = fibonacciOutput = ({ res, next }, argsObject) => {
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let { counter } = argsObject;
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// S'il n'y a pas les champs obligatoire
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if (!(counter)) {
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return errorHandling(next, requiredFields);
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}
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// Si ce n'est pas un nombre
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counter = parseInt(counter);
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if (isNaN(counter)) {
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return errorHandling(next, { message: "Veuillez rentré un nombre valide.", statusCode: 400 });
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}
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// Si le nombre dépasse LIMIT_COUNTER
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const LIMIT_COUNTER = 51;
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if (counter >= LIMIT_COUNTER) {
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return errorHandling(next, { message: `Par souci de performance, vous ne pouvez pas exécuter cette fonction avec un compteur dépassant ${LIMIT_COUNTER - 1}.`, statusCode: 400 });
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}
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const result = fibonacci(counter);
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const resultFormatted = result.map((number) => formatNumberResult(number));
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return res.status(200).json({
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result,
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resultFormatted,
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resultHTML: `<p>Les ${counter} premiers nombres de la suite de fibonacci :<br/> ${resultFormatted.join(', ')}</p>`
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});
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}
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