client/src/app/shared/misc/utils.ts

   1 // Thanks: https://stackoverflow.com/questions/901115/how-can-i-get-query-string-values-in-javascript
   2
   3 import { DatePipe } from '@angular/common'
   4 import { environment } from '../../../environments/environment'
   5 import { AuthService } from '../../core/auth'
   6
   7 function getParameterByName (name: string, url: string) {
   8   if (!url) url = window.location.href
   9   name = name.replace(/[\[\]]/g, '\\$&')
  10
  11   const regex = new RegExp('[?&]' + name + '(=([^&#]*)|&|#|$)')
  12   const results = regex.exec(url)
  13
  14   if (!results) return null
  15   if (!results[2]) return ''
  16
  17   return decodeURIComponent(results[2].replace(/\+/g, ' '))
  18 }
  19
  20 function populateAsyncUserVideoChannels (authService: AuthService, channel: { id: number, label: string, support: string }[]) {
  21   return new Promise(res => {
  22     authService.userInformationLoaded
  23       .subscribe(
  24         () => {
  25           const user = authService.getUser()
  26           if (!user) return
  27
  28           const videoChannels = user.videoChannels
  29           if (Array.isArray(videoChannels) === false) return
  30
  31           videoChannels.forEach(c => channel.push({ id: c.id, label: c.displayName, support: c.support }))
  32
  33           return res()
  34         }
  35       )
  36   })
  37 }
  38
  39 function getAbsoluteAPIUrl () {
  40   let absoluteAPIUrl = environment.apiUrl
  41   if (!absoluteAPIUrl) {
  42     // The API is on the same domain
  43     absoluteAPIUrl = window.location.origin
  44   }
  45
  46   return absoluteAPIUrl
  47 }
  48
  49 const datePipe = new DatePipe('en')
  50 function dateToHuman (date: string) {
  51   return datePipe.transform(date, 'medium')
  52 }
  53
  54 function immutableAssign <A, B> (target: A, source: B) {
  55   return Object.assign({}, target, source)
  56 }
  57
  58 function objectToUrlEncoded (obj: any) {
  59   const str: string[] = []
  60   for (const key of Object.keys(obj)) {
  61     str.push(encodeURIComponent(key) + '=' + encodeURIComponent(obj[key]))
  62   }
  63
  64   return str.join('&')
  65 }
  66
  67 // Thanks: https://gist.github.com/ghinda/8442a57f22099bdb2e34
  68 function objectToFormData (obj: any, form?: FormData, namespace?: string) {
  69   let fd = form || new FormData()
  70   let formKey
  71
  72   for (let key of Object.keys(obj)) {
  73     if (namespace) formKey = `${namespace}[${key}]`
  74     else formKey = key
  75
  76     if (obj[key] === undefined) continue
  77
  78     if (Array.isArray(obj[key]) && obj[key].length === 0) {
  79       fd.append(key, null)
  80       continue
  81     }
  82
  83     if (obj[key] !== null && typeof obj[ key ] === 'object' && !(obj[ key ] instanceof File)) {
  84       objectToFormData(obj[ key ], fd, key)
  85     } else {
  86       fd.append(formKey, obj[ key ])
  87     }
  88   }
  89
  90   return fd
  91 }
  92
  93 function lineFeedToHtml (obj: object, keyToNormalize: string) {
  94   return immutableAssign(obj, {
  95     [keyToNormalize]: obj[keyToNormalize].replace(/\r?\n|\r/g, '<br />')
  96   })
  97 }
  98
  99 export {
 100   objectToUrlEncoded,
 101   getParameterByName,
 102   populateAsyncUserVideoChannels,
 103   getAbsoluteAPIUrl,
 104   dateToHuman,
 105   immutableAssign,
 106   objectToFormData,
 107   lineFeedToHtml
 108 }