8 files changed, 272 insertions, 0 deletions

diff --git a/client/src/app/helpers/utils/channel.ts b/client/src/app/helpers/utils/channel.ts
new file mode 100644
index 000000000..93863a8af
--- /dev/null
+++ b/client/src/app/helpers/utils/channel.ts
@@ -0,0 +1,34 @@
+import { first, map } from 'rxjs/operators'
+import { SelectChannelItem } from 'src/types/select-options-item.model'
+import { AuthService } from '../../core/auth'
+
+function listUserChannels (authService: AuthService) {
+  return authService.userInformationLoaded
+    .pipe(
+      first(),
+      map(() => {
+        const user = authService.getUser()
+        if (!user) return undefined
+
+        const videoChannels = user.videoChannels
+        if (Array.isArray(videoChannels) === false) return undefined
+
+        return videoChannels
+          .sort((a, b) => {
+            if (a.updatedAt < b.updatedAt) return 1
+            if (a.updatedAt > b.updatedAt) return -1
+            return 0
+          })
+          .map(c => ({
+            id: c.id,
+            label: c.displayName,
+            support: c.support,
+            avatarPath: c.avatar?.path
+          }) as SelectChannelItem)
+      })
+    )
+}
+
+export {
+  listUserChannels
+}
diff --git a/client/src/app/helpers/utils/date.ts b/client/src/app/helpers/utils/date.ts
new file mode 100644
index 000000000..012b959ea
--- /dev/null
+++ b/client/src/app/helpers/utils/date.ts
@@ -0,0 +1,25 @@
+import { DatePipe } from '@angular/common'
+
+const datePipe = new DatePipe('en')
+function dateToHuman (date: string) {
+  return datePipe.transform(date, 'medium')
+}
+
+function durationToString (duration: number) {
+  const hours = Math.floor(duration / 3600)
+  const minutes = Math.floor((duration % 3600) / 60)
+  const seconds = duration % 60
+
+  const minutesPadding = minutes >= 10 ? '' : '0'
+  const secondsPadding = seconds >= 10 ? '' : '0'
+  const displayedHours = hours > 0 ? hours.toString() + ':' : ''
+
+  return (
+    displayedHours + minutesPadding + minutes.toString() + ':' + secondsPadding + seconds.toString()
+  ).replace(/^0/, '')
+}
+
+export {
+  durationToString,
+  dateToHuman
+}
diff --git a/client/src/app/helpers/utils/html.ts b/client/src/app/helpers/utils/html.ts
new file mode 100644
index 000000000..2d520aee9
--- /dev/null
+++ b/client/src/app/helpers/utils/html.ts
@@ -0,0 +1,18 @@
+import { immutableAssign } from './object'
+
+function objectLineFeedToHtml (obj: any, keyToNormalize: string) {
+  return immutableAssign(obj, {
+    [keyToNormalize]: lineFeedToHtml(obj[keyToNormalize])
+  })
+}
+
+function lineFeedToHtml (text: string) {
+  if (!text) return text
+
+  return text.replace(/\r?\n|\r/g, '<br />')
+}
+
+export {
+  objectLineFeedToHtml,
+  lineFeedToHtml
+}
diff --git a/client/src/app/helpers/utils/index.ts b/client/src/app/helpers/utils/index.ts
new file mode 100644
index 000000000..dc09c92ab
--- /dev/null
+++ b/client/src/app/helpers/utils/index.ts
@@ -0,0 +1,7 @@
+export * from './channel'
+export * from './date'
+export * from './html'
+export * from './object'
+export * from './ui'
+export * from './upload'
+export * from './url'
diff --git a/client/src/app/helpers/utils/object.ts b/client/src/app/helpers/utils/object.ts
new file mode 100644
index 000000000..1ca4a23ac
--- /dev/null
+++ b/client/src/app/helpers/utils/object.ts
@@ -0,0 +1,47 @@
+function immutableAssign <A, B> (target: A, source: B) {
+  return Object.assign({}, target, source)
+}
+
+function removeElementFromArray <T> (arr: T[], elem: T) {
+  const index = arr.indexOf(elem)
+  if (index !== -1) arr.splice(index, 1)
+}
+
+function sortBy (obj: any[], key1: string, key2?: string) {
+  return obj.sort((a, b) => {
+    const elem1 = key2 ? a[key1][key2] : a[key1]
+    const elem2 = key2 ? b[key1][key2] : b[key1]
+
+    if (elem1 < elem2) return -1
+    if (elem1 === elem2) return 0
+    return 1
+  })
+}
+
+function intoArray (value: any) {
+  if (!value) return undefined
+  if (Array.isArray(value)) return value
+
+  if (typeof value === 'string') return value.split(',')
+
+  return [ value ]
+}
+
+function toBoolean (value: any) {
+  if (!value) return undefined
+
+  if (typeof value === 'boolean') return value
+
+  if (value === 'true') return true
+  if (value === 'false') return false
+
+  return undefined
+}
+
+export {
+  sortBy,
+  immutableAssign,
+  removeElementFromArray,
+  intoArray,
+  toBoolean
+}
diff --git a/client/src/app/helpers/utils/ui.ts b/client/src/app/helpers/utils/ui.ts
new file mode 100644
index 000000000..ac8298926
--- /dev/null
+++ b/client/src/app/helpers/utils/ui.ts
@@ -0,0 +1,33 @@
+function scrollToTop (behavior: 'auto' | 'smooth' = 'auto') {
+  window.scrollTo({
+    left: 0,
+    top: 0,
+    behavior
+  })
+}
+
+function isInViewport (el: HTMLElement) {
+  const bounding = el.getBoundingClientRect()
+  return (
+    bounding.top >= 0 &&
+      bounding.left >= 0 &&
+      bounding.bottom <= (window.innerHeight || document.documentElement.clientHeight) &&
+      bounding.right <= (window.innerWidth || document.documentElement.clientWidth)
+  )
+}
+
+function isXPercentInViewport (el: HTMLElement, percentVisible: number) {
+  const rect = el.getBoundingClientRect()
+  const windowHeight = (window.innerHeight || document.documentElement.clientHeight)
+
+  return !(
+    Math.floor(100 - (((rect.top >= 0 ? 0 : rect.top) / +-(rect.height / 1)) * 100)) < percentVisible ||
+    Math.floor(100 - ((rect.bottom - windowHeight) / rect.height) * 100) < percentVisible
+  )
+}
+
+export {
+  scrollToTop,
+  isInViewport,
+  isXPercentInViewport
+}
diff --git a/client/src/app/helpers/utils/upload.ts b/client/src/app/helpers/utils/upload.ts
new file mode 100644
index 000000000..a3fce7fee
--- /dev/null
+++ b/client/src/app/helpers/utils/upload.ts
@@ -0,0 +1,37 @@
+import { HttpErrorResponse } from '@angular/common/http'
+import { Notifier } from '@app/core'
+import { HttpStatusCode } from '@shared/models'
+
+function genericUploadErrorHandler (parameters: {
+  err: Pick<HttpErrorResponse, 'message' | 'status' | 'headers'>
+  name: string
+  notifier: Notifier
+  sticky?: boolean
+}) {
+  const { err, name, notifier, sticky } = { sticky: false, ...parameters }
+  const title = $localize`The upload failed`
+  let message = err.message
+
+  if (err instanceof ErrorEvent) { // network error
+    message = $localize`The connection was interrupted`
+    notifier.error(message, title, null, sticky)
+  } else if (err.status === HttpStatusCode.INTERNAL_SERVER_ERROR_500) {
+    message = $localize`The server encountered an error`
+    notifier.error(message, title, null, sticky)
+  } else if (err.status === HttpStatusCode.REQUEST_TIMEOUT_408) {
+    message = $localize`Your ${name} file couldn't be transferred before the set timeout (usually 10min)`
+    notifier.error(message, title, null, sticky)
+  } else if (err.status === HttpStatusCode.PAYLOAD_TOO_LARGE_413) {
+    const maxFileSize = err.headers?.get('X-File-Maximum-Size') || '8G'
+    message = $localize`Your ${name} file was too large (max. size: ${maxFileSize})`
+    notifier.error(message, title, null, sticky)
+  } else {
+    notifier.error(err.message, title)
+  }
+
+  return message
+}
+
+export {
+  genericUploadErrorHandler
+}
diff --git a/client/src/app/helpers/utils/url.ts b/client/src/app/helpers/utils/url.ts
new file mode 100644
index 000000000..82d9cc11b
--- /dev/null
+++ b/client/src/app/helpers/utils/url.ts
@@ -0,0 +1,71 @@
+import { environment } from '../../../environments/environment'
+
+// Thanks: https://stackoverflow.com/questions/901115/how-can-i-get-query-string-values-in-javascript
+function getParameterByName (name: string, url: string) {
+  if (!url) url = window.location.href
+  name = name.replace(/[[\]]/g, '\\$&')
+
+  const regex = new RegExp('[?&]' + name + '(=([^&#]*)|&|#|$)')
+  const results = regex.exec(url)
+
+  if (!results) return null
+  if (!results[2]) return ''
+
+  return decodeURIComponent(results[2].replace(/\+/g, ' '))
+}
+
+function getAbsoluteAPIUrl () {
+  let absoluteAPIUrl = environment.hmr === true
+    ? 'http://localhost:9000'
+    : environment.apiUrl
+
+  if (!absoluteAPIUrl) {
+    // The API is on the same domain
+    absoluteAPIUrl = window.location.origin
+  }
+
+  return absoluteAPIUrl
+}
+
+function getAbsoluteEmbedUrl () {
+  let absoluteEmbedUrl = environment.originServerUrl
+  if (!absoluteEmbedUrl) {
+    // The Embed is on the same domain
+    absoluteEmbedUrl = window.location.origin
+  }
+
+  return absoluteEmbedUrl
+}
+
+// Thanks: https://gist.github.com/ghinda/8442a57f22099bdb2e34
+function objectToFormData (obj: any, form?: FormData, namespace?: string) {
+  const fd = form || new FormData()
+  let formKey
+
+  for (const key of Object.keys(obj)) {
+    if (namespace) formKey = `${namespace}[${key}]`
+    else formKey = key
+
+    if (obj[key] === undefined) continue
+
+    if (Array.isArray(obj[key]) && obj[key].length === 0) {
+      fd.append(key, null)
+      continue
+    }
+
+    if (obj[key] !== null && typeof obj[key] === 'object' && !(obj[key] instanceof File)) {
+      objectToFormData(obj[key], fd, formKey)
+    } else {
+      fd.append(formKey, obj[key])
+    }
+  }
+
+  return fd
+}
+
+export {
+  getParameterByName,
+  objectToFormData,
+  getAbsoluteAPIUrl,
+  getAbsoluteEmbedUrl
+}