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import { concat, forkJoin, merge } from 'rxjs'
import { Component, Input, OnChanges, OnInit } from '@angular/core'
import { AuthService, Notifier, RedirectService } from '@app/core'
import { Account, VideoChannel, VideoService } from '@app/shared/shared-main'
import { FeedFormat } from '@peertube/peertube-models'
import { UserSubscriptionService } from './user-subscription.service'
@Component({
selector: 'my-subscribe-button',
templateUrl: './subscribe-button.component.html',
styleUrls: [ './subscribe-button.component.scss' ]
})
export class SubscribeButtonComponent implements OnInit, OnChanges {
/**
* SubscribeButtonComponent can be used with a single VideoChannel passed as [VideoChannel],
* or with an account and a full list of that account's videoChannels. The latter is intended
* to allow mass un/subscription from an account's page, while keeping the channel-centric
* subscription model.
*/
@Input() account: Account
@Input() videoChannels: VideoChannel[]
@Input() displayFollowers = false
@Input() size: 'small' | 'normal' = 'normal'
subscribed = new Map<string, boolean>()
constructor (
private authService: AuthService,
private redirectService: RedirectService,
private notifier: Notifier,
private userSubscriptionService: UserSubscriptionService,
private videoService: VideoService
) { }
get handle () {
return this.account
? this.account.nameWithHost
: this.videoChannel.name + '@' + this.videoChannel.host
}
get channelHandle () {
return this.getChannelHandler(this.videoChannel)
}
get uri () {
return this.account
? this.account.url
: this.videoChannels[0].url
}
get rssUri () {
const rssFeed = this.account
? this.videoService
.getAccountFeedUrls(this.account.id)
.find(i => i.format === FeedFormat.RSS)
: this.videoService
.getVideoChannelFeedUrls(this.videoChannels[0].id)
.find(i => i.format === FeedFormat.RSS)
return rssFeed.url
}
get videoChannel () {
return this.videoChannels[0]
}
get isAllChannelsSubscribed () {
return this.subscribeStatus(true).length === this.videoChannels.length
}
get isAtLeastOneChannelSubscribed () {
return this.subscribeStatus(true).length > 0
}
get isBigButton () {
return this.isUserLoggedIn() && this.videoChannels.length > 1 && this.isAtLeastOneChannelSubscribed
}
ngOnInit () {
this.loadSubscribedStatus()
}
ngOnChanges () {
this.ngOnInit()
}
subscribe () {
if (this.isUserLoggedIn()) {
return this.localSubscribe()
}
return this.gotoLogin()
}
localSubscribe () {
const subscribedStatus = this.subscribeStatus(false)
const observableBatch = this.videoChannels
.map(videoChannel => this.getChannelHandler(videoChannel))
.filter(handle => subscribedStatus.includes(handle))
.map(handle => this.userSubscriptionService.addSubscription(handle))
forkJoin(observableBatch)
.subscribe({
next: () => {
this.notifier.success(
this.account
? $localize`Subscribed to all current channels of ${this.account.displayName}. You will be notified of all their new videos.`
: $localize`Subscribed to ${this.videoChannels[0].displayName}. You will be notified of all their new videos.`,
$localize`Subscribed`
)
},
error: err => this.notifier.error(err.message)
})
}
unsubscribe () {
if (this.isUserLoggedIn()) {
this.localUnsubscribe()
}
}
localUnsubscribe () {
const subscribeStatus = this.subscribeStatus(true)
const observableBatch = this.videoChannels
.map(videoChannel => this.getChannelHandler(videoChannel))
.filter(handle => subscribeStatus.includes(handle))
.map(handle => this.userSubscriptionService.deleteSubscription(handle))
concat(...observableBatch)
.subscribe({
complete: () => {
this.notifier.success(
this.account
? $localize`Unsubscribed from all channels of ${this.account.nameWithHost}`
: $localize`Unsubscribed from ${this.videoChannels[0].nameWithHost}`,
$localize`Unsubscribed`
)
},
error: err => this.notifier.error(err.message)
})
}
isUserLoggedIn () {
return this.authService.isLoggedIn()
}
gotoLogin () {
this.redirectService.redirectToLogin()
}
subscribeStatus (subscribed: boolean) {
const accumulator: string[] = []
for (const [ key, value ] of this.subscribed.entries()) {
if (value === subscribed) accumulator.push(key)
}
return accumulator
}
isSubscribedToAll () {
return Array.from(this.subscribed.values()).every(v => v === true)
}
isRemoteSubscribeAvailable () {
return !this.isUserLoggedIn()
}
private getChannelHandler (videoChannel: VideoChannel) {
return videoChannel.name + '@' + videoChannel.host
}
private loadSubscribedStatus () {
if (!this.isUserLoggedIn()) return
for (const videoChannel of this.videoChannels) {
const handle = this.getChannelHandler(videoChannel)
this.subscribed.set(handle, false)
merge(
this.userSubscriptionService.listenToSubscriptionCacheChange(handle),
this.userSubscriptionService.doesSubscriptionExist(handle)
).subscribe({
next: res => this.subscribed.set(handle, res),
error: err => this.notifier.error(err.message)
})
}
}
}
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