backends: Add refresh_task to the Backend interface

[etc/taskwarrior.git] / tasklib / task.py

diff --git a/tasklib/task.py b/tasklib/task.py
index d4fc9b2d2a941fa13dea8955158951d5feef18d7..3f53511416da4ec670689ecb34f3f4cfc0e646a4 100644 (file)
--- a/tasklib/task.py
+++ b/tasklib/task.py
@@ -9,7 +9,7 @@ import six
 import sys
 import tzlocal
 
-from backends import TaskWarrior
+from backends import TaskWarrior, TaskWarriorException
 
 DATE_FORMAT = '%Y%m%dT%H%M%SZ'
 DATE_FORMAT_CALC = '%Y-%m-%dT%H:%M:%S'
@@ -21,10 +21,6 @@ logger = logging.getLogger(__name__)
 local_zone = tzlocal.get_localzone()
 
 
-class TaskWarriorException(Exception):
-    pass
-
-
 class ReadOnlyDictView(object):
     """
     Provides simplified read-only view upon dict object.
@@ -590,7 +586,7 @@ class Task(TaskResource):
         if self.deleted:
             raise Task.DeletedTask("Task was already deleted")
 
-        self.warrior.execute_command([self['uuid'], 'delete'])
+        self.backend.delete_task(self)
 
         # Refresh the status again, so that we have updated info stored
         self.refresh(only_fields=['status', 'start', 'end'])
@@ -609,7 +605,7 @@ class Task(TaskResource):
         elif self.active:
             raise Task.ActiveTask("Task is already active")
 
-        self.warrior.execute_command([self['uuid'], 'start'])
+        self.backend.start_task(self)
 
         # Refresh the status again, so that we have updated info stored
         self.refresh(only_fields=['status', 'start'])
@@ -624,7 +620,7 @@ class Task(TaskResource):
         if not self.active:
             raise Task.InactiveTask("Cannot stop an inactive task")
 
-        self.warrior.execute_command([self['uuid'], 'stop'])
+        self.backend.stop_task(self)
 
         # Refresh the status again, so that we have updated info stored
         self.refresh(only_fields=['status', 'start'])
@@ -641,11 +637,7 @@ class Task(TaskResource):
         elif self.deleted:
             raise Task.DeletedTask("Deleted task cannot be completed")
 
-        # Older versions of TW do not stop active task at completion
-        if self.warrior.version < VERSION_2_4_0 and self.active:
-            self.stop()
-
-        self.warrior.execute_command([self['uuid'], 'done'])
+        self.backend.complete_task(self)
 
         # Refresh the status again, so that we have updated info stored
         self.refresh(only_fields=['status', 'start', 'end'])
@@ -654,33 +646,8 @@ class Task(TaskResource):
         if self.saved and not self.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
-            identifier = id_lines[0].split(' ')[2].rstrip('.')
-
-            # Identifier can be either ID or UUID for completed tasks
-            try:
-                self._data['id'] = int(identifier)
-            except ValueError:
-                self._data['uuid'] = identifier
-
-        # Refreshing is very important here, as not only modification time
-        # is updated, but arbitrary attribute may have changed due hooks
-        # altering the data before saving
-        self.refresh(after_save=True)
+        # All the actual work is done by the backend
+        self.backend.save_task(self)
 
     def add_annotation(self, annotation):
         if not self.saved: