fix json fetching

zotify/track.py

@@ -92,7 +92,10 @@ def get_song_lyrics(song_id: str, file_save: str) -> None:
     raw, lyrics = Zotify.invoke_url(f'https://spclient.wg.spotify.com/color-lyrics/v2/track/{song_id}')
 
     if lyrics:
-        formatted_lyrics = lyrics['lyrics']['lines']
+        try:
+            formatted_lyrics = lyrics['lyrics']['lines']
+        except KeyError:
+            raise ValueError(f'Failed to fetch lyrics: {song_id}')
         if(lyrics['lyrics']['syncType'] == "UNSYNCED"):
             with open(file_save, 'w') as file:
                 for line in formatted_lyrics:
@@ -107,7 +110,7 @@ def get_song_lyrics(song_id: str, file_save: str) -> None:
                     ts_millis = str(math.floor(timestamp % 1000))[:2].zfill(2)
                     file.writelines(f'[{ts_minutes}:{ts_seconds}.{ts_millis}]' + line['words'] + '\n')
             return
-    raise ValueError(f'Filed to fetch lyrics: {song_id}')
+    raise ValueError(f'Failed to fetch lyrics: {song_id}')
 
 
 def get_song_duration(song_id: str) -> float:

zotify/zotify.py

@@ -1,3 +1,4 @@
+import json
 from pathlib import Path
 from pwinput import pwinput
 import time
@@ -88,10 +89,10 @@ class Zotify:
         responsetext = response.text
         try:
             responsejson = response.json()
-        except requests.exceptions.JSONDecodeError:
-            responsejson = {}
+        except json.decoder.JSONDecodeError:
+            responsejson = {"error": {"status": "unknown", "message": "received an empty response"}}
 
-        if 'error' in responsejson:
+        if not responsejson or 'error' in responsejson:
             if tryCount < (cls.CONFIG.get_retry_attempts() - 1):
                 Printer.print(PrintChannel.WARNINGS, f"Spotify API Error (try {tryCount + 1}) ({responsejson['error']['status']}): {responsejson['error']['message']}")
                 time.sleep(5)