Prettify lastfm provider

my/lastfm/__init__.py

@@ -1,37 +1,59 @@
 #!/usr/bin/env python3
 from functools import lru_cache
-from typing import Dict, List, NamedTuple
+from typing import NamedTuple, Dict, Any
 from datetime import datetime
 from pathlib import Path
-import os
 import json
 
 import pytz
 
-_PATH = Path("/L/backups/lastfm")
+from my_configuration import paths
+
+# TODO Json type?
+# TODO memoised properties?
+# TODO lazy mode and eager mode?
+# lazy is a bit nicer in terms of more flexibility and less processing?
+# eager is a bit more explicit for error handling
 
 class Scrobble(NamedTuple):
-    dt: datetime
-    track: str
+    raw: Dict[str, Any]
+
+    @property
+    def dt(self) -> datetime:
+        ts = int(self.raw['date'])
+        return datetime.fromtimestamp(ts, tz=pytz.utc)
+
+    @property
+    def artist(self) -> str:
+        return self.raw['artist']
+
+    @property
+    def name(self) -> str:
+        return self.raw['name']
+
+    @property
+    def track(self) -> str:
+        return f'{self.artist} — {self.name}'
+
+
+    # TODO __repr__, __str__
+    # TODO could also be nice to make generic? maybe even depending on eagerness
 
 
 # TODO memoise...?
-
 # TODO watch out, if we keep the app running it might expire
 def _iter_scrobbles():
-    last = max(_PATH.glob('*.json'))
-    # TODO mm, no timezone? wonder if it's UTC...
+    last = max(Path(paths.lastfm.export_path).glob('*.json'))
+    # TODO mm, no timezone? hopefuly it's UTC
     j = json.loads(last.read_text())
 
-    for d in j:
-        ts = int(d['date'])
-        dt = datetime.fromtimestamp(ts, tz=pytz.utc)
-        track = f"{d['artist']} — {d['name']}"
-        yield Scrobble(dt, track)
+    for raw in j:
+        yield Scrobble(raw=raw)
 
 
 @lru_cache(1)
 def get_scrobbles():
+    # TODO assert sorted?
     return list(_iter_scrobbles())