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89 lines
2.2 KiB
JavaScript
89 lines
2.2 KiB
JavaScript
// Calendar
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import { useEffect, useState } from 'preact/hooks'
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export const WEEK_DAYS = [
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'Domenica',
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'Lunedì',
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'Martedì',
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'Mercoledì',
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'Giovedì',
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'Venerdì',
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'Sabato',
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]
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// Hashing
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export function hashString(str, seed = 0) {
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let h1 = 0xdeadbeef ^ seed,
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h2 = 0x41c6ce57 ^ seed
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for (let i = 0, ch; i < str.length; i++) {
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ch = str.charCodeAt(i)
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h1 = Math.imul(h1 ^ ch, 2654435761)
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h2 = Math.imul(h2 ^ ch, 1597334677)
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}
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h1 = Math.imul(h1 ^ (h1 >>> 16), 2246822507) ^ Math.imul(h2 ^ (h2 >>> 13), 3266489909)
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h2 = Math.imul(h2 ^ (h2 >>> 16), 2246822507) ^ Math.imul(h1 ^ (h1 >>> 13), 3266489909)
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return 4294967296 * (2097151 & h2) + (h1 >>> 0)
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}
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// Courses
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export function prettyCourseName(name) {
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return name
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.split(' ')
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.map(word => word.toLowerCase())
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.map(word => {
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if (word.trim().length === 0) return word
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return /(^del|^nel|^di$|^dei$|^con$|^alla$|^per$|^e$|^la$)/.test(word)
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? word
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: word[0].toUpperCase() + word.slice(1)
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})
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.join(' ')
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.replaceAll('Ii', 'II')
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.replaceAll('IIi', 'III')
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.replaceAll('Iii', 'III')
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.replaceAll(/'(.)/g, ({}, letter) => "'" + letter.toUpperCase())
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}
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export function prettyAulaName(name) {
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return name
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.replace('FIB', 'Fib')
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.replace('RIUNIONI', 'Riunioni')
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.replace(/([A-Z0-9])\-LAB/, 'Lab $1')
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}
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export function prettyProfName(nome, cognome) {
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return (nome + ' ' + cognome)
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.split(/\b/)
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.map(word => _.capitalize(word))
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.join('')
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}
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// JSX
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export const withClasses = classes =>
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Array.isArray(classes)
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? classes.filter(e => !!e).join(' ')
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: Object.entries(classes)
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.filter(([, value]) => value)
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.map(([key]) => key)
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.join(' ')
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// Hooks
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export const usePersistentState = (key, initialValue) => {
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const previousValue = localStorage.getItem(key)
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const [value, setValue] = useState(
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previousValue !== null ? JSON.parse(previousValue) : initialValue
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)
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useEffect(() => {
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localStorage.setItem(key, JSON.stringify(value))
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}, [value])
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return [value, setValue]
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}
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