Add download link to downloaded file

This adds a simple download link that points to the downloaded file.

Note: This makes all files in the download directory (and its
sub-directory) available to any user.

Closes gh-26

app/main.py

@@ -108,6 +108,7 @@ if config.URL_PREFIX != '/':
         return web.HTTPFound(config.URL_PREFIX)
 
 routes.static(config.URL_PREFIX + 'favicon/', 'favicon')
+routes.static(config.URL_PREFIX + 'download/', config.DOWNLOAD_DIR)
 routes.static(config.URL_PREFIX, 'ui/dist/metube')
 app.add_routes(routes)
 

app/ytdl.py

@@ -30,6 +30,7 @@ class DownloadInfo:
         self.quality = quality
         self.format = format
         self.status = self.msg = self.percent = self.speed = self.eta = None
+        self.filename = None
 
 class Download:
     manager = None
@@ -60,6 +61,9 @@ class Download:
                     'speed',
                     'eta',
                 )})
+            def put_status_postprocessor(d):
+                if d['postprocessor'] == 'MoveFiles' and d['status'] == 'finished':
+                    self.status_queue.put({'status': 'finished', 'filename': d['info_dict']['filepath']})
             ret = yt_dlp.YoutubeDL(params={
                 'quiet': True,
                 'no_color': True,
@@ -69,6 +73,7 @@ class Download:
                 'cachedir': False,
                 'socket_timeout': 30,
                 'progress_hooks': [put_status],
+                'postprocessor_hooks': [put_status_postprocessor],
                 **self.ytdl_opts,
             }).download([self.info.url])
             self.status_queue.put({'status': 'finished' if ret == 0 else 'error'})
@@ -113,6 +118,8 @@ class Download:
             if status is None:
                 return
             self.tmpfilename = status.get('tmpfilename')
+            if 'filename' in status:
+                self.info.filename = os.path.relpath(status.get('filename'))
             self.info.status = status['status']
             self.info.msg = status.get('msg')
             if 'downloaded_bytes' in status:

ui/src/app/app.component.html

@@ -112,7 +112,8 @@
             <fa-icon *ngIf="download.value.status == 'finished'" [icon]="faCheckCircle" style="color: green;"></fa-icon>
             <fa-icon *ngIf="download.value.status == 'error'" [icon]="faTimesCircle" style="color: red;"></fa-icon>
           </div>
-          <span ngbTooltip="{{download.value.msg}}">{{ download.value.title }}</span>
+          <span ngbTooltip="{{download.value.msg}}"><a *ngIf="!!download.value.filename; else noDownloadLink" href="download/{{download.value.filename}}" target="_blank">{{ download.value.title }}</a></span>
+          <ng-template #noDownloadLink>{{ download.value.title }}</ng-template>
         </td>
         <td>
           <button *ngIf="download.value.status == 'error'" type="button" class="btn btn-link" (click)="retryDownload(download.key, download.value.quality)"><fa-icon [icon]="faRedoAlt"></fa-icon></button>

ui/src/app/downloads.service.ts

@@ -15,6 +15,7 @@ interface Download {
   url: string,
   status: string;
   msg: string;
+  filename: string;
   quality: string;
   percent: number;
   speed: number;