+ # Refresh the status again, so that we have updated info stored
+ self.refresh(only_fields=['status'])
+
+ def save(self):
+ if self.saved and not self._is_modified:
+ return
+
+ args = [self['uuid'], 'modify'] if self.saved else ['add']
+ args.extend(self._get_modified_fields_as_args())
+ output = self.warrior.execute_command(args)
+
+ # Parse out the new ID, if the task is being added for the first time
+ if not self.saved:
+ id_lines = [l for l in output if l.startswith('Created task ')]
+
+ # Complain loudly if it seems that more tasks were created
+ # Should not happen
+ if len(id_lines) != 1 or len(id_lines[0].split(' ')) != 3:
+ raise TaskWarriorException("Unexpected output when creating "
+ "task: %s" % '\n'.join(id_lines))
+
+ # Circumvent the ID storage, since ID is considered read-only
+ self._data['id'] = int(id_lines[0].split(' ')[2].rstrip('.'))
+
+ self.refresh()
+
+ def add_annotation(self, annotation):
+ if not self.saved:
+ raise Task.NotSaved("Task needs to be saved to add annotation")
+
+ args = [self['uuid'], 'annotate', annotation]
+ self.warrior.execute_command(args)
+ self.refresh(only_fields=['annotations'])
+
+ def remove_annotation(self, annotation):
+ if not self.saved:
+ raise Task.NotSaved("Task needs to be saved to remove annotation")
+
+ if isinstance(annotation, TaskAnnotation):
+ annotation = annotation['description']
+ args = [self['uuid'], 'denotate', annotation]
+ self.warrior.execute_command(args)
+ self.refresh(only_fields=['annotations'])
+
+ def _get_modified_fields_as_args(self):
+ args = []
+
+ def add_field(field):
+ # Add the output of format_field method to args list (defaults to
+ # field:value)
+ serialized_value = self._serialize(field, self._data[field]) or ''
+ format_default = lambda: "{0}:{1}".format(
+ field,
+ "'{0}'".format(serialized_value) if serialized_value else ''
+ )
+ format_func = getattr(self, 'format_{0}'.format(field),
+ format_default)
+ args.append(format_func())
+
+ # If we're modifying saved task, simply pass on all modified fields
+ if self.saved:
+ for field in self._modified_fields:
+ add_field(field)
+ # For new tasks, pass all fields that make sense
+ else:
+ for field in self._data.keys():
+ if field in self.read_only_fields:
+ continue
+ add_field(field)
+
+ return args
+
+ def refresh(self, only_fields=[]):
+ # Raise error when trying to refresh a task that has not been saved
+ if not self.saved:
+ raise Task.NotSaved("Task needs to be saved to be refreshed")
+
+ # We need to use ID as backup for uuid here for the refreshes
+ # of newly saved tasks. Any other place in the code is fine
+ # with using UUID only.
+ args = [self['uuid'] or self['id'], 'export']
+ new_data = json.loads(self.warrior.execute_command(args)[0])
+ if only_fields:
+ to_update = dict(
+ [(k, new_data.get(k)) for k in only_fields])
+ self._update_data(to_update, update_original=True)
+ else:
+ self._load_data(new_data)
+
+
+class TaskFilter(SerializingObject):
+ """
+ A set of parameters to filter the task list with.
+ """
+
+ def __init__(self, filter_params=[]):
+ self.filter_params = filter_params
+
+ def add_filter(self, filter_str):
+ self.filter_params.append(filter_str)
+
+ def add_filter_param(self, key, value):
+ key = key.replace('__', '.')
+
+ # Replace the value with empty string, since that is the
+ # convention in TW for empty values
+ attribute_key = key.split('.')[0]
+ value = self._serialize(attribute_key, value)
+
+ # If we are filtering by uuid:, do not use uuid keyword
+ # due to TW-1452 bug
+ if key == 'uuid':
+ self.filter_params.insert(0, value)
+ else:
+ # Surround value with aphostrophes unless it's a empty string
+ value = "'%s'" % value if value else ''
+
+ # We enforce equality match by using 'is' (or 'none') modifier
+ # Without using this syntax, filter fails due to TW-1479
+ modifier = '.is' if value else '.none'
+ key = key + modifier if '.' not in key else key
+
+ self.filter_params.append("{0}:{1}".format(key, value))
+
+ def get_filter_params(self):
+ return [f for f in self.filter_params if f]
+
+ def clone(self):
+ c = self.__class__()
+ c.filter_params = list(self.filter_params)
+ return c
+
+
+class TaskQuerySet(object):
+ """
+ Represents a lazy lookup for a task objects.
+ """
+
+ def __init__(self, warrior=None, filter_obj=None):
+ self.warrior = warrior
+ self._result_cache = None
+ self.filter_obj = filter_obj or TaskFilter()
+
+ def __deepcopy__(self, memo):
+ """
+ Deep copy of a QuerySet doesn't populate the cache
+ """
+ obj = self.__class__()
+ for k, v in self.__dict__.items():
+ if k in ('_iter', '_result_cache'):
+ obj.__dict__[k] = None
+ else:
+ obj.__dict__[k] = copy.deepcopy(v, memo)
+ return obj
+
+ def __repr__(self):
+ data = list(self[:REPR_OUTPUT_SIZE + 1])
+ if len(data) > REPR_OUTPUT_SIZE:
+ data[-1] = "...(remaining elements truncated)..."
+ return repr(data)
+
+ def __len__(self):
+ if self._result_cache is None:
+ self._result_cache = list(self)
+ return len(self._result_cache)
+
+ def __iter__(self):
+ if self._result_cache is None:
+ self._result_cache = self._execute()
+ return iter(self._result_cache)
+
+ def __getitem__(self, k):
+ if self._result_cache is None:
+ self._result_cache = list(self)
+ return self._result_cache.__getitem__(k)
+
+ def __bool__(self):
+ if self._result_cache is not None:
+ return bool(self._result_cache)
+ try:
+ next(iter(self))
+ except StopIteration:
+ return False
+ return True