teddit-reddit-frontend-alte.../inc/commons.js

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module.exports = function(request, fs) {
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const config = require('../config')
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this.downloadFile = (url) => {
return new Promise(resolve => {
request(url, { encoding: 'binary' }, (error, response, body) => {
if(!error && response.statusCode === 200) {
resolve({ success: true, data: body })
} else {
resolve({ success: false, data: null })
}
})
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}).catch((err) => {
console.log(`Downloading media file failed for unknown reason. Details:`, err)
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})
}
this.writeToDisk = (data, filename) => {
return new Promise(resolve => {
fs.writeFile(filename, data, 'binary', (error, result) => {
if(!error) {
resolve({ success: true })
} else {
resolve({ success: false })
}
})
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}).catch((err) => {
console.log(`Writing media file to disk failed for unknown reason. Details:`, err)
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})
}
this.logTimestamp = (date) => {
return date.toGMTString()
}
this.cleanUrl = (url) => {
return url.replace(/&/g, '&')
}
this.teddifyUrl = (url) => {
try {
let u = new URL(url)
if(u.host === 'www.reddit.com' || u.host === 'reddit.com') {
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url = url.replace(u.host, config.domain)
}
if(u.host === 'i.redd.it' || u.host === 'v.redd.it') {
let image_exts = ['png', 'jpg', 'jpeg']
let video_exts = ['mp4', 'gif', 'gifv']
let file_ext = getFileExtension(url)
if(image_exts.includes(file_ext))
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url = url.replace(`${u.host}/`, `${config.domain}/pics/w:null_`)
if(video_exts.includes(file_ext) || !image_exts.includes(file_ext))
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url = url.replace(u.host, `${config.domain}/vids`) + '.mp4'
}
} catch(e) { }
return url
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}
this.kFormatter = (num) => {
return Math.abs(num) > 999 ? Math.sign(num)*((Math.abs(num)/1000).toFixed(1)) + 'k' : Math.sign(num)*Math.abs(num)
}
this.timeDifference = (time) => {
time = parseInt(time) * 1000
let ms_per_minute = 60 * 1000
let ms_per_hour = ms_per_minute * 60
let ms_per_day = ms_per_hour * 24
let ms_per_month = ms_per_day * 30
let ms_per_year = ms_per_day * 365
let current = + new Date()
let elapsed = Math.abs(time - current)
let r = ''
let e
if(elapsed < ms_per_minute) {
e = Math.round(elapsed/1000)
r = `${e} seconds ago`
if(e === 1)
r = 'just now'
return r
}
else if(elapsed < ms_per_hour) {
e = Math.round(elapsed/ms_per_minute)
r = `${e} minutes ago`
if(r === 1)
r = 'a minute ago'
return r
}
else if(elapsed < ms_per_day ) {
e = Math.round(elapsed/ms_per_hour)
r = `${e} hours ago`
if(e === 1)
r = 'an hour ago'
return r
}
else if(elapsed < ms_per_month) {
e = Math.round(elapsed/ms_per_day)
r = `${e} days ago`
if(e === 1)
r = '1 day ago'
return r
}
else if(elapsed < ms_per_year) {
e = Math.round(elapsed/ms_per_month)
r = `${e} months ago`
if(e === 1)
r = '1 month ago'
return r
}
else {
e = Math.round(elapsed/ms_per_year)
r = `${e} years ago`
if(e === 1)
r = '1 year ago'
return r
}
}
this.toUTCString = (time) => {
let d = new Date();
d.setTime(time*1000);
return d.toUTCString();
}
this.unescape = (s) => {
if(s) {
var re = /&(?:amp|#38|lt|#60|gt|#62|apos|#39|quot|#34);/g;
var unescaped = {
'&amp;': '&',
'&#38;': '&',
'&lt;': '<',
'&#60;': '<',
'&gt;': '>',
'&#62;': '>',
'&apos;': "'",
'&#39;': "'",
'&quot;': '"',
'&#34;': '"'
}
return s.replace(re, (m) => {
return unescaped[m]
})
} else {
return ''
}
}
this.deleteFiles = (files, callback) => {
var i = files.length
files.forEach((filepath) => {
fs.unlink(filepath, (err) => {
i--
if(err) {
callback(err)
return
} else if(i <= 0) {
callback(null)
}
})
})
}
this.isGif = (url) => {
try {
url = new URL(url)
let pathname = url.pathname
let file_ext = pathname.substring(pathname.lastIndexOf('.') + 1)
if(file_ext === 'gif' || file_ext === 'gifv') {
return true
} else {
return false
}
} catch (error) {
console.error(`Invalid url supplied to isGif(). URL: ${url}`, error)
return false
}
}
this.getFileExtension = (url) => {
try {
url = new URL(url)
let pathname = url.pathname
let file_ext = pathname.substring(pathname.lastIndexOf('.') + 1)
if(file_ext) {
return file_ext
} else {
return ''
}
} catch (error) {
console.error(`Invalid url supplied to getFileExtension(). URL: ${url}`, error)
return ''
}
}
}