feature: initial syndication feeds support

Provides rss 2.0, atom 1.0 and json 1.0 feeds for videos (instance and account-wide) on listings and video-watch views.

* still lacks redis caching
* still lacks lastBuildDate support
* still lacks channel-wide support
* still lacks semantic annotation (for licenses, NSFW warnings, etc.)
* still lacks love ( ˘ ³˘)

* RSS: has MRSS support for torrent lists!
* RSS: includes the first torrent in an enclosure
* JSON: lists all torrents in the 'attachments' object
* ATOM: lacking torrent listing support

Advances #23
Partial implementation for the accountId generation in the client, which will need a hotfix to add a way to get the proper account id.

17 files changed, 188 insertions, 5 deletions

diff --git a/client/src/app/account/account-videos/account-videos.component.ts b/client/src/app/account/account-videos/account-videos.component.ts
index 2664d59d8..b9a3bea3f 100644
--- a/client/src/app/account/account-videos/account-videos.component.ts
+++ b/client/src/app/account/account-videos/account-videos.component.ts
@@ -27,6 +27,8 @@ export class AccountVideosComponent extends AbstractVideoList implements OnInit,
     totalItems: null
   }
 
+  syndicationItems = {}
+
   protected baseVideoWidth = -1
   protected baseVideoHeight = 155
 
@@ -61,6 +63,10 @@ export class AccountVideosComponent extends AbstractVideoList implements OnInit,
     return this.videoService.getMyVideos(newPagination, this.sort)
   }
 
+  generateSyndicationList () {
+    throw new Error('Method not implemented.')
+  }
+
   async deleteSelectedVideos () {
     const toDeleteVideosIds = Object.keys(this.checkedVideos)
       .filter(k => this.checkedVideos[k] === true)
diff --git a/client/src/app/shared/misc/object-length.pipe.ts b/client/src/app/shared/misc/object-length.pipe.ts
new file mode 100644
index 000000000..84d182052
--- /dev/null
+++ b/client/src/app/shared/misc/object-length.pipe.ts
@@ -0,0 +1,8 @@
+import { Pipe, PipeTransform } from '@angular/core'
+
+@Pipe({ name: 'myObjectLength' })
+export class ObjectLengthPipe implements PipeTransform {
+  transform (value: Object) {
+    return Object.keys(value).length
+  }
+}
diff --git a/client/src/app/shared/shared.module.ts b/client/src/app/shared/shared.module.ts
index eb50d45a9..74730e2aa 100644
--- a/client/src/app/shared/shared.module.ts
+++ b/client/src/app/shared/shared.module.ts
@@ -10,6 +10,7 @@ import { MarkdownService } from '@app/videos/shared'
 
 import { BsDropdownModule } from 'ngx-bootstrap/dropdown'
 import { ModalModule } from 'ngx-bootstrap/modal'
+import { PopoverModule } from 'ngx-bootstrap/popover'
 import { TabsModule } from 'ngx-bootstrap/tabs'
 import { TooltipModule } from 'ngx-bootstrap/tooltip'
 import { BytesPipe, KeysPipe, NgPipesModule } from 'ngx-pipes'
@@ -21,11 +22,13 @@ import { EditButtonComponent } from './misc/edit-button.component'
 import { FromNowPipe } from './misc/from-now.pipe'
 import { LoaderComponent } from './misc/loader.component'
 import { NumberFormatterPipe } from './misc/number-formatter.pipe'
+import { ObjectLengthPipe } from './misc/object-length.pipe'
 import { RestExtractor, RestService } from './rest'
 import { UserService } from './users'
 import { VideoAbuseService } from './video-abuse'
 import { VideoBlacklistService } from './video-blacklist'
 import { VideoMiniatureComponent } from './video/video-miniature.component'
+import { VideoFeedComponent } from './video/video-feed.component'
 import { VideoThumbnailComponent } from './video/video-thumbnail.component'
 import { VideoService } from './video/video.service'
 
@@ -39,6 +42,7 @@ import { VideoService } from './video/video.service'
 
     BsDropdownModule.forRoot(),
     ModalModule.forRoot(),
+    PopoverModule.forRoot(),
     TabsModule.forRoot(),
     TooltipModule.forRoot(),
 
@@ -50,9 +54,11 @@ import { VideoService } from './video/video.service'
     LoaderComponent,
     VideoThumbnailComponent,
     VideoMiniatureComponent,
+    VideoFeedComponent,
     DeleteButtonComponent,
     EditButtonComponent,
     NumberFormatterPipe,
+    ObjectLengthPipe,
     FromNowPipe,
     MarkdownTextareaComponent,
     InfiniteScrollerDirective,
@@ -68,6 +74,7 @@ import { VideoService } from './video/video.service'
 
     BsDropdownModule,
     ModalModule,
+    PopoverModule,
     TabsModule,
     TooltipModule,
     PrimeSharedModule,
@@ -77,6 +84,7 @@ import { VideoService } from './video/video.service'
     LoaderComponent,
     VideoThumbnailComponent,
     VideoMiniatureComponent,
+    VideoFeedComponent,
     DeleteButtonComponent,
     EditButtonComponent,
     MarkdownTextareaComponent,
@@ -84,6 +92,7 @@ import { VideoService } from './video/video.service'
     HelpComponent,
 
     NumberFormatterPipe,
+    ObjectLengthPipe,
     FromNowPipe
   ],
 
diff --git a/client/src/app/shared/video/abstract-video-list.html b/client/src/app/shared/video/abstract-video-list.html
index 94a38019d..cb04e07b4 100644
--- a/client/src/app/shared/video/abstract-video-list.html
+++ b/client/src/app/shared/video/abstract-video-list.html
@@ -2,9 +2,9 @@
   <div class="title-page title-page-single">
     {{ titlePage }}
   </div>
+  <my-video-feed [syndicationItems]="syndicationItems"></my-video-feed>
 
   <div *ngIf="pagination.totalItems === 0">No results.</div>
-
   <div
     myInfiniteScroller
     [pageHeight]="pageHeight"
diff --git a/client/src/app/shared/video/abstract-video-list.scss b/client/src/app/shared/video/abstract-video-list.scss
index 63538a089..b75907dc9 100644
--- a/client/src/app/shared/video/abstract-video-list.scss
+++ b/client/src/app/shared/video/abstract-video-list.scss
@@ -1,3 +1,5 @@
+@import '_mixins';
+
 .videos {
   text-align: center;
 
@@ -6,6 +8,11 @@
   }
 }
 
+my-video-feed {
+  display: inline-block;
+  margin-left: -45px;
+}
+
 @media screen and (max-width: 500px) {
   .videos {
     text-align: center;
diff --git a/client/src/app/shared/video/abstract-video-list.ts b/client/src/app/shared/video/abstract-video-list.ts
index 1b9a519bd..024834dfc 100644
--- a/client/src/app/shared/video/abstract-video-list.ts
+++ b/client/src/app/shared/video/abstract-video-list.ts
@@ -3,6 +3,7 @@ import { ActivatedRoute, Router } from '@angular/router'
 import { isInMobileView } from '@app/shared/misc/utils'
 import { InfiniteScrollerDirective } from '@app/shared/video/infinite-scroller.directive'
 import { NotificationsService } from 'angular2-notifications'
+import { PopoverModule } from 'ngx-bootstrap/popover'
 import 'rxjs/add/operator/debounceTime'
 import { Observable } from 'rxjs/Observable'
 import { fromEvent } from 'rxjs/observable/fromEvent'
@@ -11,6 +12,8 @@ import { AuthService } from '../../core/auth'
 import { ComponentPagination } from '../rest/component-pagination.model'
 import { SortField } from './sort-field.type'
 import { Video } from './video.model'
+import { FeedFormat } from '../../../../../shared'
+import { VideoFeedComponent } from '@app/shared/video/video-feed.component'
 
 export abstract class AbstractVideoList implements OnInit, OnDestroy {
   private static LINES_PER_PAGE = 4
@@ -25,6 +28,8 @@ export abstract class AbstractVideoList implements OnInit, OnDestroy {
   }
   sort: SortField = '-createdAt'
   defaultSort: SortField = '-createdAt'
+  syndicationItems = {}
+
   loadOnInit = true
   pageHeight: number
   videoWidth: number
@@ -47,6 +52,7 @@ export abstract class AbstractVideoList implements OnInit, OnDestroy {
   private resizeSubscription: Subscription
 
   abstract getVideosObservable (page: number): Observable<{ videos: Video[], totalVideos: number}>
+  abstract generateSyndicationList ()
 
   get user () {
     return this.authService.getUser()
diff --git a/client/src/app/shared/video/video-feed.component.html b/client/src/app/shared/video/video-feed.component.html
new file mode 100644
index 000000000..7733ef221
--- /dev/null
+++ b/client/src/app/shared/video/video-feed.component.html
@@ -0,0 +1,14 @@
+<div class="video-feed">
+  <span *ngIf="(syndicationItems | myObjectLength) >= 1" class="icon icon-syndication" 
+    [popover]="feedsList"
+    placement="bottom"
+    [outsideClick]="true">
+  </span>
+
+  <ng-template #feedsList>
+    <div *ngFor="let key of syndicationItems | keys">
+      <a [href]="syndicationItems[key]">{{ key }}</a>
+    </div>
+  </ng-template>
+</div>
+  
\ No newline at end of file
diff --git a/client/src/app/shared/video/video-feed.component.scss b/client/src/app/shared/video/video-feed.component.scss
new file mode 100644
index 000000000..2efeb405e
--- /dev/null
+++ b/client/src/app/shared/video/video-feed.component.scss
@@ -0,0 +1,19 @@
+@import '_mixins';
+
+.video-feed {
+  a {
+    @include disable-default-a-behaviour;
+
+    color: black;
+  }
+
+  .icon {
+    @include icon(12px);
+
+    &.icon-syndication {
+      position: relative;
+      top: -2px;
+      background-image: url('../../../assets/images/global/syndication.svg');
+    }
+  }
+}
\ No newline at end of file
diff --git a/client/src/app/shared/video/video-feed.component.ts b/client/src/app/shared/video/video-feed.component.ts
new file mode 100644
index 000000000..41257ca99
--- /dev/null
+++ b/client/src/app/shared/video/video-feed.component.ts
@@ -0,0 +1,14 @@
+import { Component, Input, OnChanges, SimpleChanges } from '@angular/core'
+
+@Component({
+  selector: 'my-video-feed',
+  styleUrls: [ './video-feed.component.scss' ],
+  templateUrl: './video-feed.component.html'
+})
+export class VideoFeedComponent implements OnChanges {
+  @Input() syndicationItems
+
+  ngOnChanges (changes: SimpleChanges) {
+    this.syndicationItems = changes.syndicationItems.currentValue
+  }
+}
diff --git a/client/src/app/shared/video/video.service.ts b/client/src/app/shared/video/video.service.ts
index 0a8894fd9..009155410 100644
--- a/client/src/app/shared/video/video.service.ts
+++ b/client/src/app/shared/video/video.service.ts
@@ -8,6 +8,7 @@ import { ResultList } from '../../../../../shared/models/result-list.model'
 import { UserVideoRateUpdate } from '../../../../../shared/models/videos/user-video-rate-update.model'
 import { UserVideoRate } from '../../../../../shared/models/videos/user-video-rate.model'
 import { VideoFilter } from '../../../../../shared/models/videos/video-query.type'
+import { FeedFormat } from '../../../../../shared/models/feeds/feed-format.enum'
 import { VideoRateType } from '../../../../../shared/models/videos/video-rate.type'
 import { VideoUpdate } from '../../../../../shared/models/videos/video-update.model'
 import { environment } from '../../../environments/environment'
@@ -24,6 +25,7 @@ import { objectToFormData } from '@app/shared/misc/utils'
 @Injectable()
 export class VideoService {
   private static BASE_VIDEO_URL = environment.apiUrl + '/api/v1/videos/'
+  private static BASE_FEEDS_URL = environment.apiUrl + '/feeds/videos.'
 
   constructor (
     private authHttp: HttpClient,
@@ -115,6 +117,47 @@ export class VideoService {
       .catch((res) => this.restExtractor.handleError(res))
   }
 
+  baseFeed () {
+    const feed = {}
+
+    for (let item in FeedFormat) {
+      feed[FeedFormat[item]] = VideoService.BASE_FEEDS_URL + item.toLowerCase()
+    }
+
+    return feed
+  }
+
+  getFeed (
+    filter?: VideoFilter
+  ) {
+    let params = this.restService.addRestGetParams(new HttpParams())
+    const feed = this.baseFeed()
+
+    if (filter) {
+      params = params.set('filter', filter)
+    }
+    for (let item in feed) {
+      feed[item] = feed[item] + ((params.toString().length === 0) ? '' : '?') + params.toString()
+    }
+
+    return feed
+  }
+
+  getAccountFeed (
+    accountId: number,
+    host?: string
+  ) {
+    let params = this.restService.addRestGetParams(new HttpParams())
+    const feed = this.baseFeed()
+
+    params = params.set('accountId', accountId.toString())
+    for (let item in feed) {
+      feed[item] = feed[item] + ((params.toString().length === 0) ? '' : '?') + params.toString()
+    }
+
+    return feed
+  }
+
   searchVideos (
     search: string,
     videoPagination: ComponentPagination,
diff --git a/client/src/app/videos/+video-watch/video-watch.component.html b/client/src/app/videos/+video-watch/video-watch.component.html
index 03f64bd12..52e3e429a 100644
--- a/client/src/app/videos/+video-watch/video-watch.component.html
+++ b/client/src/app/videos/+video-watch/video-watch.component.html
@@ -24,6 +24,7 @@
           <div class="video-info-by">
             By {{ video.by }}
             <img [src]="getAvatarPath()" alt="Account avatar" />
+            <my-video-feed [syndicationItems]="syndicationItems"></my-video-feed>
           </div>
         </div>
 
diff --git a/client/src/app/videos/+video-watch/video-watch.component.scss b/client/src/app/videos/+video-watch/video-watch.component.scss
index 03f960339..8a3e2584b 100644
--- a/client/src/app/videos/+video-watch/video-watch.component.scss
+++ b/client/src/app/videos/+video-watch/video-watch.component.scss
@@ -80,6 +80,11 @@
         }
       }
 
+      my-video-feed {
+        margin-left: 5px;
+        margin-top: 1px;
+      }
+
       .video-actions-rates {
         display: flex;
         flex-direction: column;
diff --git a/client/src/app/videos/+video-watch/video-watch.component.ts b/client/src/app/videos/+video-watch/video-watch.component.ts
index df5b8d02d..b3ebe3e4b 100644
--- a/client/src/app/videos/+video-watch/video-watch.component.ts
+++ b/client/src/app/videos/+video-watch/video-watch.component.ts
@@ -1,4 +1,4 @@
-import { Component, ElementRef, NgZone, OnDestroy, OnInit, ViewChild } from '@angular/core'
+import { Component, ElementRef, NgZone, OnDestroy, OnInit, ViewChild, OnChanges } from '@angular/core'
 import { ActivatedRoute, Router } from '@angular/router'
 import { RedirectService } from '@app/core/routing/redirect.service'
 import { peertubeLocalStorage } from '@app/shared/misc/peertube-local-storage'
@@ -9,18 +9,20 @@ import { Subscription } from 'rxjs/Subscription'
 import * as videojs from 'video.js'
 import 'videojs-hotkeys'
 import * as WebTorrent from 'webtorrent'
-import { UserVideoRateType, VideoRateType } from '../../../../../shared'
+import { UserVideoRateType, VideoRateType, FeedFormat } from '../../../../../shared'
 import '../../../assets/player/peertube-videojs-plugin'
 import { AuthService, ConfirmService } from '../../core'
 import { VideoBlacklistService } from '../../shared'
 import { Account } from '../../shared/account/account.model'
 import { VideoDetails } from '../../shared/video/video-details.model'
+import { VideoFeedComponent } from '../../shared/video/video-feed.component'
 import { Video } from '../../shared/video/video.model'
 import { VideoService } from '../../shared/video/video.service'
 import { MarkdownService } from '../shared'
 import { VideoDownloadComponent } from './modal/video-download.component'
 import { VideoReportComponent } from './modal/video-report.component'
 import { VideoShareComponent } from './modal/video-share.component'
+import { environment } from '../../../environments/environment'
 import { getVideojsOptions } from '../../../assets/player/peertube-player'
 
 @Component({
@@ -38,6 +40,8 @@ export class VideoWatchComponent implements OnInit, OnDestroy {
 
   otherVideosDisplayed: Video[] = []
 
+  syndicationItems = {}
+
   player: videojs.Player
   playerElement: HTMLVideoElement
   userRating: UserVideoRateType = null
@@ -98,14 +102,15 @@ export class VideoWatchComponent implements OnInit, OnDestroy {
       }
 
       const uuid = routeParams['uuid']
-      // Video did not changed
+      // Video did not change
       if (this.video && this.video.uuid === uuid) return
-
+      // Video did change
       this.videoService.getVideo(uuid).subscribe(
         video => {
           const startTime = this.route.snapshot.queryParams.start
           this.onVideoFetched(video, startTime)
             .catch(err => this.handleError(err))
+          this.generateSyndicationList()
         },
 
         error => {
@@ -242,6 +247,16 @@ export class VideoWatchComponent implements OnInit, OnDestroy {
     return this.video.tags.join(', ')
   }
 
+  generateSyndicationList () {
+    const feeds = this.videoService.getAccountFeed(
+      this.video.account.id,
+      (this.video.isLocal) ? environment.apiUrl : this.video.account.host
+    )
+    this.syndicationItems['rss 2.0'] = feeds[FeedFormat.RSS]
+    this.syndicationItems['atom 1.0'] = feeds[FeedFormat.ATOM]
+    this.syndicationItems['json 1.0'] = feeds[FeedFormat.JSON]
+  }
+
   isVideoRemovable () {
     return this.video.isRemovableBy(this.authService.getUser())
   }
diff --git a/client/src/app/videos/video-list/video-local.component.ts b/client/src/app/videos/video-list/video-local.component.ts
index 8f9d50a7b..9d626abd1 100644
--- a/client/src/app/videos/video-list/video-local.component.ts
+++ b/client/src/app/videos/video-list/video-local.component.ts
@@ -3,9 +3,12 @@ import { ActivatedRoute, Router } from '@angular/router'
 import { immutableAssign } from '@app/shared/misc/utils'
 import { NotificationsService } from 'angular2-notifications'
 import { AuthService } from '../../core/auth'
+import { PopoverModule } from 'ngx-bootstrap/popover'
 import { AbstractVideoList } from '../../shared/video/abstract-video-list'
 import { SortField } from '../../shared/video/sort-field.type'
 import { VideoService } from '../../shared/video/video.service'
+import { FeedFormat } from '../../../../../shared/models/feeds/feed-format.enum'
+import * as url from 'url'
 
 @Component({
   selector: 'my-videos-local',
@@ -27,6 +30,7 @@ export class VideoLocalComponent extends AbstractVideoList implements OnInit, On
 
   ngOnInit () {
     super.ngOnInit()
+    this.generateSyndicationList()
   }
 
   ngOnDestroy () {
@@ -38,4 +42,11 @@ export class VideoLocalComponent extends AbstractVideoList implements OnInit, On
 
     return this.videoService.getVideos(newPagination, this.sort, 'local')
   }
+
+  generateSyndicationList () {
+    const feeds = this.videoService.getFeed('local')
+    this.syndicationItems['rss 2.0'] = feeds[FeedFormat.RSS]
+    this.syndicationItems['atom 1.0'] = feeds[FeedFormat.ATOM]
+    this.syndicationItems['json 1.0'] = feeds[FeedFormat.JSON]
+  }
 }
diff --git a/client/src/app/videos/video-list/video-recently-added.component.ts b/client/src/app/videos/video-list/video-recently-added.component.ts
index 1cecd14a0..2bdc20d92 100644
--- a/client/src/app/videos/video-list/video-recently-added.component.ts
+++ b/client/src/app/videos/video-list/video-recently-added.component.ts
@@ -6,6 +6,8 @@ import { AuthService } from '../../core/auth'
 import { AbstractVideoList } from '../../shared/video/abstract-video-list'
 import { SortField } from '../../shared/video/sort-field.type'
 import { VideoService } from '../../shared/video/video.service'
+import { FeedFormat } from '../../../../../shared/models/feeds/feed-format.enum'
+import * as url from 'url'
 
 @Component({
   selector: 'my-videos-recently-added',
@@ -27,6 +29,7 @@ export class VideoRecentlyAddedComponent extends AbstractVideoList implements On
 
   ngOnInit () {
     super.ngOnInit()
+    this.generateSyndicationList()
   }
 
   ngOnDestroy () {
@@ -38,4 +41,11 @@ export class VideoRecentlyAddedComponent extends AbstractVideoList implements On
 
     return this.videoService.getVideos(newPagination, this.sort)
   }
+
+  generateSyndicationList () {
+    const feeds = this.videoService.getFeed('local')
+    this.syndicationItems['rss 2.0'] = feeds[FeedFormat.RSS]
+    this.syndicationItems['atom 1.0'] = feeds[FeedFormat.ATOM]
+    this.syndicationItems['json 1.0'] = feeds[FeedFormat.JSON]
+  }
 }
diff --git a/client/src/app/videos/video-list/video-search.component.ts b/client/src/app/videos/video-list/video-search.component.ts
index b94be8e11..ef9afa757 100644
--- a/client/src/app/videos/video-list/video-search.component.ts
+++ b/client/src/app/videos/video-list/video-search.component.ts
@@ -7,6 +7,7 @@ import { Subscription } from 'rxjs/Subscription'
 import { AuthService } from '../../core/auth'
 import { AbstractVideoList } from '../../shared/video/abstract-video-list'
 import { VideoService } from '../../shared/video/video.service'
+import { FeedFormat } from '../../../../../shared/models/feeds/feed-format.enum'
 
 @Component({
   selector: 'my-videos-search',
@@ -61,4 +62,8 @@ export class VideoSearchComponent extends AbstractVideoList implements OnInit, O
     const newPagination = immutableAssign(this.pagination, { currentPage: page })
     return this.videoService.searchVideos(this.otherRouteParams.search, newPagination, this.sort)
   }
+
+  generateSyndicationList () {
+    throw new Error('Method not implemented.')
+  }
 }
diff --git a/client/src/app/videos/video-list/video-trending.component.ts b/client/src/app/videos/video-list/video-trending.component.ts
index 1dd1ad23b..905c75ab0 100644
--- a/client/src/app/videos/video-list/video-trending.component.ts
+++ b/client/src/app/videos/video-list/video-trending.component.ts
@@ -6,6 +6,8 @@ import { AuthService } from '../../core/auth'
 import { AbstractVideoList } from '../../shared/video/abstract-video-list'
 import { SortField } from '../../shared/video/sort-field.type'
 import { VideoService } from '../../shared/video/video.service'
+import { FeedFormat } from '../../../../../shared/models/feeds/feed-format.enum'
+import * as url from 'url'
 
 @Component({
   selector: 'my-videos-trending',
@@ -27,6 +29,7 @@ export class VideoTrendingComponent extends AbstractVideoList implements OnInit,
 
   ngOnInit () {
     super.ngOnInit()
+    this.generateSyndicationList()
   }
 
   ngOnDestroy () {
@@ -37,4 +40,11 @@ export class VideoTrendingComponent extends AbstractVideoList implements OnInit,
     const newPagination = immutableAssign(this.pagination, { currentPage: page })
     return this.videoService.getVideos(newPagination, this.sort)
   }
+
+  generateSyndicationList () {
+    const feeds = this.videoService.getFeed('local')
+    this.syndicationItems['rss 2.0'] = feeds[FeedFormat.RSS]
+    this.syndicationItems['atom 1.0'] = feeds[FeedFormat.ATOM]
+    this.syndicationItems['json 1.0'] = feeds[FeedFormat.JSON]
+  }
 }