Export playlists to m3u using web interface

supysonic/frontend/playlist.py

@@ -7,7 +7,7 @@
 
 import uuid
 
-from flask import flash, redirect, render_template, request, url_for
+from flask import Response, flash, redirect, render_template, request, url_for
 from pony.orm import ObjectNotFound
 
 from ..db import Playlist
@@ -40,6 +40,27 @@ def playlist_details(uid):
 
     return render_template("playlist.html", playlist=playlist)
 
+@frontend.route("/playlist/<uid>/export")
+def playlist_export(uid):
+    try:
+        uid = uuid.UUID(uid)
+    except ValueError:
+        flash("Invalid playlist id")
+        return redirect(url_for("frontend.playlist_index"))
+
+    try:
+        playlist = Playlist[uid]
+    except ObjectNotFound:
+        flash("Unknown playlist")
+        return redirect(url_for("frontend.playlist_index"))
+
+    return Response(
+        render_template("playlist_export.m3u", playlist=playlist),
+        mimetype="audio/mpegurl",
+        headers={"Content-disposition": f"attachment; filename={playlist.name}.m3u"}
+        )
+
+
 
 @frontend.route("/playlist/<uid>", methods=["POST"])
 def playlist_update(uid):

supysonic/templates/playlist_export.m3u

@@ -0,0 +1,12 @@
+{#-
+ This file is part of Supysonic.
+ Supysonic is a Python implementation of the Subsonic server API.
+
+ Copyright (C) 2013-2018 Alban 'spl0k' Féron
+                    2017 Óscar García Amor
+
+ Distributed under terms of the GNU AGPLv3 license.
+-#}
+{% for t in playlist.get_tracks() %}
+{{ t.path }}
+{% endfor %}

supysonic/templates/playlists.html

@@ -21,7 +21,7 @@
 {% else %}
 <table class="table table-striped table-hover">
   <thead>
-    <tr><th>Playlist</th><th>Tracks</th><th>Public</th><th></th></tr>
+    <tr><th>Playlist</th><th>Tracks</th><th>Public</th><th>Export</th><th>Delete</th></tr>
   </thead>
   <tbody>
     {% for p in mine %}
@@ -32,6 +32,8 @@
                                  aria-label="Public playlist"></span>{% else %}<span
                                  class="glyphicon glyphicon-unchecked"
                                  aria-label="Private playlist"></span>{% endif %}</td>
+      <td><a href="{{ url_for('frontend.playlist_export', uid = p.id) }}">
+        <button class="btn btn-primary btn-xs"><span class="glyphicon glyphicon-arrow-down" title="Export playlist"></span></button></a></td>
       <td><button class="btn btn-danger btn-xs" data-href="{{ url_for('frontend.playlist_delete', uid = p.id) }}" data-toggle="modal" data-target="#confirm-delete" aria-label="Delete playlist">
         <span class="glyphicon glyphicon-remove-circle" aria-hidden="true" data-toggle="tooltip" data-placement="top" title="Delete playlist"></span></button></td>
     </tr>