Fix datetime error

Known kodi/python issue where datetime.strptime throws a Nonetype error
for no reason, after being used once.

resources/lib/librarysync.py

@@ -105,17 +105,17 @@ class LibrarySync(threading.Thread):
             lastSync = "2010-01-01T00:00:00Z"
         self.logMsg("Last sync run: %s" % lastSync, 1)
         
-        lastSyncTime = datetime.strptime(lastSync, "%Y-%m-%dT%H:%M:%SZ")
+        lastSyncTime = utils.convertdate(lastSync)
         self.logMsg("LastIncrementalSync : %s" % lastSyncTime, 1)
         
         # get server RetentionDateTime
         url = "{server}/Emby.Kodi.SyncQueue/GetServerDateTime?format=json"
         result = self.doUtils.downloadUrl(url)
         retention_time = "2010-01-01T00:00:00Z"
-        if result and result.get("RetentionDateTime"):
+        if result and result.get('RetentionDateTime'):
             self.logMsg("RetentionDateTime Found", 1)
             retention_time = result['RetentionDateTime']
-        retention_time = datetime.strptime(retention_time, "%Y-%m-%dT%H:%M:%SZ")
+        retention_time = utils.convertdate(retention_time)
         self.logMsg("RetentionDateTime : %s" % retention_time, 1)
 
         # if last sync before retention time do a full sync
@@ -155,7 +155,7 @@ class LibrarySync(threading.Thread):
         result = self.doUtils.downloadUrl(url)
         try: # datetime fails when used more than once, TypeError
             server_time = result['ServerDateTime']
-            server_time = datetime.strptime(server_time, "%Y-%m-%dT%H:%M:%SZ")
+            server_time = utils.convertdate(server_time)
         
         except Exception as e:
             # If the server plugin is not installed or an error happened.

resources/lib/utils.py

@@ -6,6 +6,7 @@ import cProfile
 import inspect
 import pstats
 import sqlite3
+from datetime import datetime, time
 import time
 import unicodedata
 import xml.etree.ElementTree as etree
@@ -238,6 +239,16 @@ def stopProfiling(pr, profileName):
                     "{0}".format(cumulative_time), func_name, filename))
     f.close()
 
+def convertdate(date):
+    try:
+        date = datetime.strptime(date, "%Y-%m-%dT%H:%M:%SZ")
+    except TypeError:
+        # TypeError: attribute of type 'NoneType' is not callable
+        # Known Kodi/python error
+        date = datetime(*(time.strptime(date, "%Y-%m-%dT%H:%M:%SZ")[0:6]))
+
+    return date
+
 def normalize_nodes(text):
     # For video nodes
     text = text.replace(":", "")