X-Git-Url: https://git.madduck.net/etc/taskwarrior.git/blobdiff_plain/092349699c57d6b36346e44a80220e941033d1ca..0695fd947f59e9e2ace9bdc445c96d9b3e0b68fd:/tasklib/serializing.py

diff --git a/tasklib/serializing.py b/tasklib/serializing.py
index 5d848ff..4594285 100644
--- a/tasklib/serializing.py
+++ b/tasklib/serializing.py
@@ -1,3 +1,17 @@
+import datetime
+import importlib
+import json
+import pytz
+import six
+import tzlocal
+
+
+from .lazy import LazyUUIDTaskSet
+
+DATE_FORMAT = '%Y%m%dT%H%M%SZ'
+local_zone = tzlocal.get_localzone()
+
+
 class SerializingObject(object):
     """
     Common ancestor for TaskResource & TaskWarriorFilter, since they both
@@ -25,8 +39,8 @@ class SerializingObject(object):
         to raise ValueError.
     """
 
-    def __init__(self, warrior):
-        self.warrior = warrior
+    def __init__(self, backend):
+        self.backend = backend
 
     def _deserialize(self, key, value):
         hydrate_func = getattr(self, 'deserialize_{0}'.format(key),
@@ -155,6 +169,8 @@ class SerializingObject(object):
         return serialized_annotations if serialized_annotations else ''
 
     def deserialize_annotations(self, data):
+        task_module = importlib.import_module('tasklib.task')
+        TaskAnnotation = getattr(task_module, 'TaskAnnotation')
         return [TaskAnnotation(self, d) for d in data] if data else []
 
     def serialize_tags(self, tags):
@@ -168,11 +184,18 @@ class SerializingObject(object):
     def serialize_depends(self, value):
         # Return the list of uuids
         value = value if value is not None else set()
-        return ','.join(task['uuid'] for task in value)
+
+        if isinstance(value, LazyUUIDTaskSet):
+            return ','.join(value._uuids)
+        else:
+            return ','.join(task['uuid'] for task in value)
 
     def deserialize_depends(self, raw_uuids):
         raw_uuids = raw_uuids or []  # Convert None to empty list
 
+        if not raw_uuids:
+            return set()
+
         # TW 2.4.4 encodes list of dependencies as a single string
         if type(raw_uuids) is not list:
             uuids = raw_uuids.split(',')
@@ -180,7 +203,7 @@ class SerializingObject(object):
         else:
             uuids = raw_uuids
 
-        return set(self.warrior.tasks.get(uuid=uuid) for uuid in uuids if uuid)
+        return LazyUUIDTaskSet(self.backend, uuids)
 
     def datetime_normalizer(self, value):
         """
@@ -192,8 +215,10 @@ class SerializingObject(object):
         localized datetime -> localized datetime (no conversion)
         """
 
-        if (isinstance(value, datetime.date)
-            and not isinstance(value, datetime.datetime)):
+        if (
+            isinstance(value, datetime.date)
+            and not isinstance(value, datetime.datetime)
+        ):
             # Convert to local midnight
             value_full = datetime.datetime.combine(value, datetime.time.min)
             localized = local_zone.localize(value_full)
@@ -205,14 +230,8 @@ class SerializingObject(object):
                 # If the value is already localized, there is no need to change
                 # time zone at this point. Also None is a valid value too.
                 localized = value
-        elif (isinstance(value, six.string_types)
-                and self.warrior.version >= VERSION_2_4_0):
-            # For strings, use 'task calc' to evaluate the string to datetime
-            # available since TW 2.4.0
-            args = value.split()
-            result = self.warrior.execute_command(['calc'] + args)
-            naive = datetime.datetime.strptime(result[0], DATE_FORMAT_CALC)
-            localized = local_zone.localize(naive)
+        elif isinstance(value, six.string_types):
+            localized = self.backend.convert_datetime_string(value)
         else:
             raise ValueError("Provided value could not be converted to "
                              "datetime, its type is not supported: {}"
@@ -227,5 +246,3 @@ class SerializingObject(object):
                              "not: {}".format(value))
 
         return value
-
-