Facebook-Events-iCal-Converter/lib/utils.js

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JavaScript
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const dayjs = require('dayjs')
const path = require('path')
const checkValidURL = (url) => {
return checkURLFormat(url) ||
checkNumberURLParameter(url)
}
const checkURLFormat = (url) => {
return /^(http:\/\/www\.|https:\/\/www\.|http:\/\/|https:\/\/)?[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}(:[0-9]{1,5})?(\/.*)?$/.test(url)
}
const checkNumberURLParameter = (url) => {
return /^\d+$/.test(url)
}
const createParserError = () => {
const err = new Error('Unable to parse event data.')
err.statusCode = 422
return err
}
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// NOTE: Using mobile facebook URL because it usually
// contains stringified JSON with event information
const createMobileURL = (originalURL) => {
const urlWithProtocol = originalURL.includes('http') ?
originalURL :
`https://${originalURL}`
const url = new URL(urlWithProtocol)
return `${url.protocol}//mobile.facebook.com${url.port}${url.pathname}${url.hash}`
}
// NOTE: Detect whether URL parameter contains
// number or http address
const createURL = (param) => {
if (checkURLFormat(param)) {
return param
}
if (checkNumberURLParameter(param)) {
return `https://facebook.com/events/${param}`
}
return ''
}
const getNormalizedUrl = (URLparameter) => {
const fbURL = createURL(URLparameter)
const mobileUrl = createMobileURL(fbURL)
return mobileUrl
}
module.exports = {
checkValidURL,
checkURLFormat,
checkNumberURLParameter,
createParserError,
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createMobileURL,
createURL,
getNormalizedUrl,
}