Remove 'last-changed' from url-watches.json and always calculate from history index (#835)

changedetectionio/__init__.py

@@ -314,7 +314,7 @@ def changedetection_app(config=None, datastore_o=None):
                 watch['uuid'] = uuid
                 sorted_watches.append(watch)
 
-        sorted_watches.sort(key=lambda x: x['last_changed'], reverse=True)
+        sorted_watches.sort(key=lambda x: x.last_changed, reverse=False)
 
         fg = FeedGenerator()
         fg.title('changedetection.io')
@@ -333,7 +333,7 @@ def changedetection_app(config=None, datastore_o=None):
             if not watch.viewed:
                 # Re #239 - GUID needs to be individual for each event
                 # @todo In the future make this a configurable link back (see work on BASE_URL https://github.com/dgtlmoon/changedetection.io/pull/228)
-                guid = "{}/{}".format(watch['uuid'], watch['last_changed'])
+                guid = "{}/{}".format(watch['uuid'], watch.last_changed)
                 fe = fg.add_entry()
 
                 # Include a link to the diff page, they will have to login here to see if password protection is enabled.

changedetectionio/api/api_v1.py

@@ -113,7 +113,7 @@ class CreateWatch(Resource):
             list[k] = {'url': v['url'],
                        'title': v['title'],
                        'last_checked': v['last_checked'],
-                       'last_changed': v['last_changed'],
+                       'last_changed': v.last_changed,
                        'last_error': v['last_error']}
 
         if request.args.get('recheck_all'):

changedetectionio/changedetection.py

@@ -50,11 +50,6 @@ def main():
     create_datastore_dir = False
 
     for opt, arg in opts:
-        #        if opt == '--clear-all-history':
-        # Remove history, the actual files you need to delete manually.
-        #            for uuid, watch in datastore.data['watching'].items():
-        #                watch.update({'history': {}, 'last_checked': 0, 'last_changed': 0, 'previous_md5': None})
-
         if opt == '-s':
             ssl_mode = True
 

changedetectionio/model/Watch.py

@@ -19,7 +19,6 @@ class model(dict):
             'url': None,
             'tag': None,
             'last_checked': 0,
-            'last_changed': 0,
             'paused': False,
             'last_viewed': 0,  # history key value of the last viewed via the [diff] link
             #'newest_history_key': 0,
@@ -59,11 +58,11 @@ class model(dict):
     jitter_seconds = 0
 
     def __init__(self, *arg, **kw):
-        import uuid
+
         self.update(self.__base_config)
         self.__datastore_path = kw['datastore_path']
 
-        self['uuid'] = str(uuid.uuid4())
+        self['uuid'] = str(uuid_builder.uuid4())
 
         del kw['datastore_path']
 
@@ -71,7 +70,10 @@ class model(dict):
             self.update(kw['default'])
             del kw['default']
 
-        # goes at the end so we update the default object with the initialiser
+        # Be sure the cached timestamp is ready
+        bump = self.history
+
+        # Goes at the end so we update the default object with the initialiser
         super(model, self).__init__(*arg, **kw)
 
     @property
@@ -81,6 +83,15 @@ class model(dict):
 
         return False
 
+    @property
+    def last_changed(self):
+        # last_changed will be the newest snapshot, but when we have just one snapshot, it should be 0
+        if self.__history_n <= 1:
+            return 0
+        if self.__newest_history_key:
+            return int(self.__newest_history_key)
+        return 0
+
     @property
     def history_n(self):
         return self.__history_n

changedetectionio/store.py

@@ -254,7 +254,6 @@ class ChangeDetectionStore:
 
         self.__data['watching'][uuid].update(
             {'last_checked': 0,
-             'last_changed': 0,
              'last_viewed': 0,
              'previous_md5': False,
              'last_notification_error': False,
@@ -528,8 +527,5 @@ class ChangeDetectionStore:
 
     # We incorrectly stored last_changed when there was not a change, and then confused the output list table
     def update_3(self):
-        for uuid, watch in self.data['watching'].items():
-            # Be sure it's recalculated
-            p = watch.history
-            if watch.history_n < 2:
-                watch['last_changed'] = 0
+        # see https://github.com/dgtlmoon/changedetection.io/pull/835
+        return

changedetectionio/update_worker.py

@@ -264,8 +264,6 @@ class update_worker(threading.Thread):
 
                                 # Notifications should only trigger on the second time (first time, we gather the initial snapshot)
                                 if watch.history_n >= 2:
-                                    # Atleast 2, means there really was a change
-                                    self.datastore.update_watch(uuid=uuid, update_obj={'last_changed': round(now)})
                                     if not self.datastore.data['watching'][uuid].get('notification_muted'):
                                         self.send_content_changed_notification(self, watch_uuid=uuid)