Add ability for an administrator to remove any video (#61)

* Add ability for an admin to remove every video on the pod.

* Server: add BlacklistedVideos relation.

* Server: Insert in BlacklistedVideos relation upon deletion of a video.

* Server: Modify BlacklistedVideos schema to add Pod id information.

* Server: Moving insertion of a blacklisted video from the `afterDestroy` hook into the process of deletion of a video.

To avoid inserting a video when it is removed on its origin pod.
When a video is removed on its origin pod, the `afterDestroy` hook is fire, but no request is made on the delete('/:videoId') interface.
Hence, we insert into `BlacklistedVideos` only on request on delete('/:videoId') (if requirements for insertion are met).

* Server: Add removeVideoFromBlacklist hook on deletion of a video.

We are going to proceed in another way :).
We will add a new route : /:videoId/blacklist to blacklist a video.
We do not blacklist a video upon its deletion now (to distinguish a video blacklist from a regular video delete)
When we blacklist a video, the video remains in the DB, so we don't have any concern about its update. It just doesn't appear in the video list.
When we remove a video, we then have to remove it from the blacklist too.
We could also remove a video from the blacklist to 'unremove' it and make it appear again in the video list (will be another feature).

* Server: Add handler for new route post(/:videoId/blacklist)

* Client: Add isBlacklistable method

* Client: Update isRemovableBy method.

* Client: Move 'Delete video' feature from the video-list to the video-watch module.

* Server: Exclude blacklisted videos from the video list

* Server: Use findAll() in BlacklistedVideos.list() method

* Server: Fix addVideoToBlacklist function.

* Client: Add blacklist feature.

* Server: Use JavaScript Standard Style.

* Server: In checkUserCanDeleteVideo, move the callback call inside the db callback function

* Server: Modify BlacklistVideo relation

* Server: Modifiy Videos methods.

* Server: Add checkVideoIsBlacklistable method

* Server: Rewrite addVideoToBlacklist method

* Server: Fix checkVideoIsBlacklistable method

* Server: Add return to addVideoToBlacklist method

2 files changed, 59 insertions, 0 deletions

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 19e9bd9ed..ed26b513e 100644
--- a/client/src/app/videos/video-watch/video-watch.component.html
+++ b/client/src/app/videos/video-watch/video-watch.component.html
@@ -96,6 +96,18 @@
               <span class="glyphicon glyphicon-alert"></span> Report
             </a>
           </li>
+
+          <li *ngIf="isVideoRemovable()" role="menuitem">
+            <a class="dropdown-item" title="Delete this video" href="#" (click)="removeVideo($event)">
+              <span class="glyphicon glyphicon-remove"></span> Delete
+            </a>
+          </li>
+
+          <li *ngIf="isVideoBlacklistable()" role="menuitem">
+            <a class="dropdown-item" title="Blacklist this video" href="#" (click)="blacklistVideo($event)">
+              <span class="glyphicon glyphicon-eye-close"></span> Blacklist
+            </a>
+          </li>
         </ul>
       </div>
     </div>
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 e04626a67..f582df45c 100644
--- a/client/src/app/videos/video-watch/video-watch.component.ts
+++ b/client/src/app/videos/video-watch/video-watch.component.ts
@@ -169,6 +169,45 @@ export class VideoWatchComponent implements OnInit, OnDestroy {
                      );
   }
 
+  removeVideo(event: Event) {
+    event.preventDefault();
+    this.confirmService.confirm('Do you really want to delete this video?', 'Delete').subscribe(
+      res => {
+        if (res === false) return;
+
+        this.videoService.removeVideo(this.video.id)
+                         .subscribe(
+                           status => {
+                             this.notificationsService.success('Success', `Video ${this.video.name} deleted.`)
+                             // Go back to the video-list.
+                             this.router.navigate(['/videos/list'])
+                           },
+
+                           error => this.notificationsService.error('Error', error.text)
+        );
+      }
+    );
+  }
+
+  blacklistVideo(event: Event) {
+    event.preventDefault()
+    this.confirmService.confirm('Do you really want to blacklist this video ?', 'Blacklist').subscribe(
+      res => {
+        if (res === false) return;
+
+        this.videoService.blacklistVideo(this.video.id)
+                         .subscribe(
+                           status => {
+                             this.notificationsService.success('Success', `Video ${this.video.name} had been blacklisted.`)
+                             this.router.navigate(['/videos/list'])
+                           },
+
+                           error => this.notificationsService.error('Error', error.text)
+        )
+      }
+    )
+  }
+
   showReportModal(event: Event) {
     event.preventDefault();
     this.videoReportModal.show();
@@ -192,6 +231,14 @@ export class VideoWatchComponent implements OnInit, OnDestroy {
            this.authService.getUser().username === this.video.author;
   }
 
+  isVideoRemovable() {
+    return this.video.isRemovableBy(this.authService.getUser());
+  }
+
+  isVideoBlacklistable() {
+    return this.video.isBlackistableBy(this.authService.getUser());
+  }
+
   private checkUserRating() {
     // Unlogged users do not have ratings
     if (this.isUserLoggedIn() === false) return;