stable - generate local playlists & add default options

LocalPLaylistGenerator.py

@@ -0,0 +1,50 @@
+
+from pathlib import Path
+
+def generate_playlists(local_library, library_path, remote_playlists, link_pattern, output_dir):
+    output_dir = Path(output_dir)
+    output_playlists = []
+
+    remote_to_local_map = {}
+
+    for local_id, links in link_pattern.items():
+        if len(links['items']):
+            remote_to_local_map[links['items'][0]] = local_id
+
+    for name, tracks in remote_playlists.items():
+        local_tracks = []
+
+        for track in tracks:
+            track = track["track"]
+            path = "error"
+            error = ""
+            if track is None:
+                error = f"error: track is none"
+            elif track["id"] in remote_to_local_map:
+                path = local_library[remote_to_local_map[track["id"]]]["path"]
+            else:
+                error = f"error: not_found - {track["name"]}"
+
+            if error != "":
+                local_tracks.append("# " + error)
+            else:
+                path = (output_dir / ".." ).resolve() / Path(path)
+                local_tracks.append(path)
+
+        pl = {
+            "name": name,
+            "tracks": local_tracks,
+        }
+
+        output_playlists.append(pl)
+
+
+    for pl in output_playlists:
+        output_dir.mkdir(parents=True, exist_ok=True)
+
+        playlist_path = Path(output_dir) / f"{pl['name']}.m3u"
+
+        with (playlist_path.open("w", encoding="utf-8") as f):
+            for track in pl["tracks"]:
+                f.write(str(track))
+                f.write("\n")