peertube/client/src/app/+admin/config/edit-custom-config/edit-vod-transcoding.component.ts

import { SelectOptionsItem } from 'src/types/select-options-item.model'
import { Component, Input, OnChanges, OnInit, SimpleChanges } from '@angular/core'
import { FormGroup } from '@angular/forms'
import { HTMLServerConfig } from '@shared/models'
import { ConfigService } from '../shared/config.service'
import { EditConfigurationService, ResolutionOption } from './edit-configuration.service'

@Component({
  selector: 'my-edit-vod-transcoding',
  templateUrl: './edit-vod-transcoding.component.html',
  styleUrls: [ './edit-custom-config.component.scss' ]
})
export class EditVODTranscodingComponent implements OnInit, OnChanges {
  @Input() form: FormGroup
  @Input() formErrors: any
  @Input() serverConfig: HTMLServerConfig

  transcodingThreadOptions: SelectOptionsItem[] = []
  transcodingProfiles: SelectOptionsItem[] = []
  resolutions: ResolutionOption[] = []

  additionalVideoExtensions = ''

  constructor (
    private configService: ConfigService,
    private editConfigurationService: EditConfigurationService
  ) { }

  ngOnInit () {
    this.transcodingThreadOptions = this.configService.transcodingThreadOptions
    this.resolutions = this.editConfigurationService.getVODResolutions()

    this.checkTranscodingFields()
  }

  ngOnChanges (changes: SimpleChanges) {
    if (changes['serverConfig']) {
      this.transcodingProfiles = this.buildAvailableTranscodingProfile()

      this.additionalVideoExtensions = this.serverConfig.video.file.extensions.join(' ')
    }
  }

  buildAvailableTranscodingProfile () {
    const profiles = this.serverConfig.transcoding.availableProfiles

    return profiles.map(p => {
      const description = p === 'default'
        ? $localize`x264, targeting maximum device compatibility`
        : ''

      return { id: p, label: p, description }
    })
  }

  getResolutionKey (resolution: string) {
    return 'transcoding.resolutions.' + resolution
  }

  isTranscodingEnabled () {
    return this.editConfigurationService.isTranscodingEnabled(this.form)
  }

  getTranscodingDisabledClass () {
    return { 'disabled-checkbox-extra': !this.isTranscodingEnabled() }
  }

  getTotalTranscodingThreads () {
    return this.editConfigurationService.getTotalTranscodingThreads(this.form)
  }

  private checkTranscodingFields () {
    const transcodingControl = this.form.get('transcoding.enabled')
    const videoStudioControl = this.form.get('videoStudio.enabled')
    const hlsControl = this.form.get('transcoding.hls.enabled')
    const webtorrentControl = this.form.get('transcoding.webtorrent.enabled')

    webtorrentControl.valueChanges
                     .subscribe(newValue => {
                       if (newValue === false && !hlsControl.disabled) {
                         hlsControl.disable()
                       }

                       if (newValue === true && !hlsControl.enabled) {
                         hlsControl.enable()
                       }
                     })

    hlsControl.valueChanges
              .subscribe(newValue => {
                if (newValue === false && !webtorrentControl.disabled) {
                  webtorrentControl.disable()
                }

                if (newValue === true && !webtorrentControl.enabled) {
                  webtorrentControl.enable()
                }
              })

    transcodingControl.valueChanges
              .subscribe(newValue => {
                if (newValue === false) {
                  videoStudioControl.setValue(false)
                }
              })

    transcodingControl.updateValueAndValidity()
    webtorrentControl.updateValueAndValidity()
    videoStudioControl.updateValueAndValidity()
    hlsControl.updateValueAndValidity()
  }
}