scanner: Add release date to the track metadata parser

This gives us a datetime.date() structure filled in with the release
date of the track.

Signed-off-by: Anna Schumaker <Anna@NoWheyCreamery.com>

scanner/metadata.py

@@ -1,4 +1,5 @@
 # Copyright 2021 (c) Anna Schumaker.
+import datetime
 import mutagen
 import re
 
@@ -42,6 +43,14 @@ class Metadata:
     def length(self):
         return int(self.file.info.length)
 
+    def release(self):
+        date = self.file.get("date", [ "0" ])
+        date = self.file.get("originalyear", date)[0].split("-")
+        year = int(date[0]) if len(date) > 0 else 1
+        month = int(date[1]) if len(date) > 1 else 1
+        day = int(date[2]) if len(date) > 2 else 1
+        return datetime.date(max(year, 1), month, day)
+
     def title(self):
         return self.file.get("title", [ "" ])[0]
 

scanner/test_metadata.py

@@ -1,4 +1,5 @@
 # Copyright 2021 (c) Anna Schumaker.
+import datetime
 import pathlib
 import scanner
 import unittest
@@ -24,6 +25,7 @@ class TestMetadata(unittest.TestCase):
             self.assertEqual(mdf.discsubtitle(), None)
             self.assertEqual(mdf.genres(), [ "Test" ])
             self.assertEqual(mdf.length(), 10)
+            self.assertEqual(mdf.release(), datetime.date(2019, 2, 1))
             self.assertEqual(mdf.title(), "Test Track")
             self.assertEqual(mdf.tracknumber(), 1)
             self.assertEqual(mdf.year(), 2019)
@@ -34,6 +36,7 @@ class TestMetadata(unittest.TestCase):
             self.assertEqual(mdf.artistsort(), "Album Artist, Test")
             self.assertEqual(mdf.discsubtitle(), "Electric Boogaloo")
             self.assertEqual(mdf.genres(), [ "Test", "Genre", "List" ])
+            self.assertEqual(mdf.release(), datetime.date(2019, 1, 1))
             self.assertEqual(mdf.year(), 2019)
 
     def test_metadata_text_txt(self):