From ac06f6b9225ad343443116c552e8019781e60388 Mon Sep 17 00:00:00 2001
From: Vijeinath Tissaveerasingham <vijeinath@gmx.ch>
Date: Wed, 17 Aug 2022 10:40:48 +0200
Subject: [PATCH] feat(video): add download button and overlay to video player
 (DEV-1151) (#798)

* feature(video): add menu and open url in tab

* feature(video): copy url to clipboard

* refactoring(video): commenting out mute function

* feature(video): downloading video

* refactor(video): moving replace file to menu

* feature(video): video overlay

* fix(video): eliminate console.log

* fix(video): adapt overlay

* fix(video): getting file url
---
 .../representation/video/video.component.html | 70 ++++++++++++-------
 .../representation/video/video.component.scss | 29 ++++++++
 .../representation/video/video.component.ts   | 62 +++++++++++++++-
 3 files changed, 133 insertions(+), 28 deletions(-)

diff --git a/src/app/workspace/resource/representation/video/video.component.html b/src/app/workspace/resource/representation/video/video.component.html
index f7090b71be..dcf9bdfc56 100644
--- a/src/app/workspace/resource/representation/video/video.component.html
+++ b/src/app/workspace/resource/representation/video/video.component.html
@@ -4,10 +4,20 @@
         <!-- in case of an error -->
         <app-status [status]="404" [url]="src.fileValue.fileUrl" [representation]="'video'" *ngIf="failedToLoad"></app-status>
 
-        <video class="video" #videoEle *ngIf="!fileHasChanged; else loading"  [src]="video" type="video/mp4" preload="auto" [muted]="muted"
-            (click)="togglePlay()" (timeupdate)="timeUpdate($event)" (loadedmetadata)="loadedMetadata()"
-            (canplaythrough)="loadedVideo()">
-        </video>
+        <div class="video-container">
+            <video class="video" #videoEle *ngIf="!fileHasChanged; else loading"  [src]="video" type="video/mp4" preload="auto" [muted]="muted"
+                (click)="togglePlay()" (timeupdate)="timeUpdate($event)" (loadedmetadata)="loadedMetadata()"
+                (canplaythrough)="loadedVideo()">
+            </video>
+
+            <div class="overlay">
+                <div>
+                    <mat-icon (click)="updateTimeFromButton(-10)">replay_10</mat-icon>
+                    <mat-icon (click)="togglePlay()">{{ reachedTheEnd ? "replay" : (play ? "pause" : "play_arrow") }}</mat-icon>
+                    <mat-icon (click)="updateTimeFromButton(10)">forward_10</mat-icon>
+                </div>
+            </div>
+        </div>
 
         <ng-template #loading>
             <app-progress-indicator></app-progress-indicator>
@@ -23,7 +33,6 @@
                     [fileHasChanged]="fileHasChanged"
                     (loaded)="displayPreview(!$event)">
                 </app-video-preview>
-
             </div>
         </div>
     </div>
@@ -37,6 +46,25 @@
         </mat-toolbar-row>
 
         <mat-toolbar-row class="action">
+            <!-- vertical more button with menu to open and copy url -->
+            <button mat-icon-button [matMenuTriggerFor]="more">
+                <mat-icon>more_vert</mat-icon>
+            </button>
+            <mat-menu #more="matMenu">
+                <button mat-menu-item (click)="openVideoInNewTab(this.src.fileValue.fileUrl)">
+                    Open file in new tab
+                </button>
+                <button mat-menu-item [cdkCopyToClipboard]="this.src.fileValue.fileUrl"
+                        (click)="openSnackBar('URL copied to clipboard!')">
+                    Copy URL to clipboard
+                </button>
+                <button mat-menu-item (click)="downloadVideo(this.src.fileValue.fileUrl)">
+                    Download file
+                </button>
+                <button mat-menu-item (click)="openReplaceFileDialog()">
+                    Replace file
+                </button>
+            </mat-menu>
             <button mat-icon-button (click)="goToStart()" [disabled]="currentTime === 0 || failedToLoad"
                 matTooltip="Stop and go to start" [matTooltipPosition]="matTooltipPos">
                 <mat-icon>skip_previous</mat-icon>
@@ -46,13 +74,9 @@
                 [disabled]="failedToLoad">
                 <mat-icon>{{ reachedTheEnd ? "replay" : (play ? "pause" : "play_arrow") }}</mat-icon>
             </button>
+
             <span class="empty-space"></span>
             <span class="fill-remaining-space"></span>
-            <button mat-icon-button (click)="updateTimeFromButton(-10)"
-                matTooltip="10 seconds backward" [matTooltipPosition]="matTooltipPos"
-                [disabled]="failedToLoad">
-                <mat-icon>replay_10</mat-icon>
-            </button>
 
             <div (wheel)="updateTimeFromScroll($event)">
                 <p class="mat-body-1 time" (click)="togglePlay()">
@@ -60,23 +84,17 @@
                     <span *ngIf="duration">/ {{ duration | appTime }}</span>
                 </p>
             </div>
-
-            <button mat-icon-button (click)="updateTimeFromButton(10)"
-                matTooltip="10 seconds forward" [matTooltipPosition]="matTooltipPos"
-                [disabled]="failedToLoad">
-                <mat-icon>forward_10</mat-icon>
-            </button>
+<!--            <button mat-icon-button (click)="muted = !muted" [matTooltip]="(muted ? 'Unmute' : 'Mute')"-->
+<!--                [matTooltipPosition]="matTooltipPos"-->
+<!--                [disabled]="failedToLoad">-->
+<!--                <mat-icon>-->
+<!--                    {{ muted ? "volume_mute" : "volume_up" }}-->
+<!--                </mat-icon>-->
+<!--            </button>-->
             <span class="fill-remaining-space"></span>
-            <button mat-icon-button (click)="muted = !muted" [matTooltip]="(muted ? 'Unmute' : 'Mute')"
-                [matTooltipPosition]="matTooltipPos"
-                [disabled]="failedToLoad">
-                <mat-icon>
-                    {{ muted ? "volume_mute" : "volume_up" }}
-                </mat-icon>
-            </button>
-            <button mat-icon-button (click)="openReplaceFileDialog()" class="replace-file" matTooltip="Replace video file" [matTooltipPosition]="matTooltipPos">
-                <mat-icon>cloud_upload</mat-icon>
-            </button>
+            <span class="empty-space"></span>
+            <span class="empty-space"></span>
+
             <button mat-icon-button (click)="toggleCinemaMode()" [disabled]="failedToLoad"
                 [matTooltip]="(cinemaMode ? 'Default view' : 'Cinema mode')" [matTooltipPosition]="matTooltipPos">
                 <mat-icon>{{cinemaMode ? "fullscreen_exit" : "fullscreen"}}</mat-icon>
diff --git a/src/app/workspace/resource/representation/video/video.component.scss b/src/app/workspace/resource/representation/video/video.component.scss
index 25a29efbab..39a67b7019 100644
--- a/src/app/workspace/resource/representation/video/video.component.scss
+++ b/src/app/workspace/resource/representation/video/video.component.scss
@@ -11,6 +11,31 @@
     position: relative;
     height: 450px;
 
+    .overlay {
+      opacity: 0;
+      background: rgba(0, 0, 0, 0.58);
+      z-index: 1;
+      height: 100%;
+      width: 100%;
+      position: absolute;
+      display: flex;
+      justify-content: center;
+      align-items: center;
+
+      mat-icon {
+        border-radius: 24px;
+        height:40px !important;
+        width:40px !important;
+        font-size:40px !important;
+        cursor: pointer;
+        padding: 4px;
+      }
+
+      mat-icon:hover {
+        background: rgba(0,0,0, 0.4);
+      }
+    }
+
     .video {
       position: absolute;
       display: block;
@@ -22,6 +47,10 @@
       height: 100%;
     }
 
+    .video-container:hover .overlay {
+      opacity: 1;
+    }
+
     .preview-line {
       width: 100%;
       width: calc(100% - 16px);
diff --git a/src/app/workspace/resource/representation/video/video.component.ts b/src/app/workspace/resource/representation/video/video.component.ts
index 83d148dae0..c4049972fa 100644
--- a/src/app/workspace/resource/representation/video/video.component.ts
+++ b/src/app/workspace/resource/representation/video/video.component.ts
@@ -1,6 +1,7 @@
 import { AfterViewInit, Component, ElementRef, EventEmitter, HostListener, Inject, Input, OnInit, Output, ViewChild } from '@angular/core';
 import { MatDialog, MatDialogConfig } from '@angular/material/dialog';
 import { DomSanitizer, SafeUrl } from '@angular/platform-browser';
+import { HttpClient, HttpHeaders } from '@angular/common/http';
 import {
     ApiResponseError,
     Constants,
@@ -21,6 +22,7 @@ import { EmitEvent, Events, UpdatedFileEventValue, ValueOperationEventService }
 import { PointerValue } from '../av-timeline/av-timeline.component';
 import { FileRepresentation } from '../file-representation';
 import { RepresentationService } from '../representation.service';
+import { NotificationService } from '../../../../main/services/notification.service';
 
 @Component({
     selector: 'app-video',
@@ -48,7 +50,7 @@ export class VideoComponent implements OnInit, AfterViewInit {
     @ViewChild('preview') preview: ElementRef;
 
     loading = true;
-
+    originalFilename: string;
     failedToLoad = false;
 
     // video file url
@@ -102,10 +104,12 @@ export class VideoComponent implements OnInit, AfterViewInit {
 
     constructor(
         @Inject(DspApiConnectionToken) private _dspApiConnection: KnoraApiConnection,
+        private readonly _http: HttpClient,
         private _dialog: MatDialog,
         private _sanitizer: DomSanitizer,
-        private _errorHandler: ErrorHandlerService,
         private _rs: RepresentationService,
+        private _errorHandler: ErrorHandlerService,
+        private _notification: NotificationService,
         private _valueOperationEventService: ValueOperationEventService
     ) { }
 
@@ -119,6 +123,7 @@ export class VideoComponent implements OnInit, AfterViewInit {
         this.video = this._sanitizer.bypassSecurityTrustUrl(this.src.fileValue.fileUrl);
         this.failedToLoad = !this._rs.doesFileExist(this.src.fileValue.fileUrl);
         this.fileHasChanged = false;
+        this._getOriginalFilename();
     }
 
     ngAfterViewInit() {
@@ -293,6 +298,39 @@ export class VideoComponent implements OnInit, AfterViewInit {
         this.preview.nativeElement.style.display = (status ? 'block' : 'none');
     }
 
+    /**
+     * display message to confirm the copy of the citation link (ARK URL)
+     */
+    openSnackBar(message: string) {
+        this._notification.openSnackBar(message);
+    }
+
+    async downloadVideo(url: string) {
+        try {
+            const res = await this._http.get(url, { responseType: 'blob' }).toPromise();
+            this.downloadFile(res);
+        } catch (e) {
+            this._errorHandler.showMessage(e);
+        }
+    }
+
+    downloadFile(data) {
+        const url = window.URL.createObjectURL(data);
+        const e = document.createElement('a');
+        e.href = url;
+
+        // set filename
+        if (this.originalFilename === undefined) {
+            e.download = url.substr(url.lastIndexOf('/') + 1);
+        } else {
+            e.download = this.originalFilename;
+        }
+
+        document.body.appendChild(e);
+        e.click();
+        document.body.removeChild(e);
+    }
+
     /**
      * opens replace file dialog
      *
@@ -321,6 +359,10 @@ export class VideoComponent implements OnInit, AfterViewInit {
         });
     }
 
+    openVideoInNewTab(url: string) {
+        window.open(url, '_blank');
+    }
+
     /**
      * general video navigation: Update current video time from position
      *
@@ -340,6 +382,22 @@ export class VideoComponent implements OnInit, AfterViewInit {
         this.previewTime = this.previewTime < 0 ? 0 : this.previewTime;
     }
 
+    private _getOriginalFilename() {
+        const requestOptions = {
+            headers: new HttpHeaders({ 'Content-Type': 'application/json' }),
+            withCredentials: true
+        };
+
+        const index = this.src.fileValue.fileUrl.indexOf(this.src.fileValue.filename);
+        const pathToJson = this.src.fileValue.fileUrl.substring(0, index + this.src.fileValue.filename.length) + '/knora.json';
+
+        this._http.get(pathToJson, requestOptions).subscribe(
+            res => {
+                this.originalFilename = res['originalFilename'];
+            }
+        );
+    }
+
     /**
      * replaces file
      * @param file