Fix base definition of the watcher

backend/store.py

@@ -3,18 +3,35 @@ import uuid
 import validators
 
 
-# @TODO Have a var which is the base value, this is referred to even in the templating.. merge and append,not just append
 # Is there an existing library to ensure some data store (JSON etc) is in sync with CRUD methods?
 # Open a github issue if you know something :)
 # https://stackoverflow.com/questions/6190468/how-to-trigger-function-on-value-change
 class ChangeDetectionStore:
 
     def __init__(self):
+
+        # Base definition for all watchers
+        self.generic_definition = {
+            'url': None,
+            'tag': None,
+            'last_checked': 0,
+            'last_changed': 0,
+            'title': None,
+            'uuid': str(uuid.uuid4())
+        }
+
         try:
             with open('/datastore/url-watches.json') as json_file:
                 self.data = json.load(json_file)
-                for p in self.data['watching']:
-                    print("Watching:", p['url'])
+                # Reinitialise each `watching` with our generic_definition in the case that we add a new var in the future.
+                i = 0
+                while i < len(self.data['watching']):
+                    _blank = self.generic_definition.copy()
+                    _blank.update(self.data['watching'][i])
+                    self.data['watching'][i] = _blank
+
+                    print("Watching:", self.data['watching'][i]['url'])
+                    i += 1
 
         # First time ran, doesnt exist.
         except (FileNotFoundError, json.decoder.JSONDecodeError):
@@ -22,24 +39,28 @@ class ChangeDetectionStore:
 
             self.data = {}
             self.data['watching'] = []
-            self.data['watching'].append({
+            self._init_blank_data()
+            self.sync_to_json()
+
+    def _init_blank_data(self):
+
+        # Test site
+        _blank = self.generic_definition.copy()
+        _blank.update({
             'url': 'https://changedetection.io',
             'tag': 'general',
-                'last_checked': 0,
-                'last_changed' : 0,
             'uuid': str(uuid.uuid4())
         })
-            self.data['watching'].append({
+        self.data['watching'].append(_blank)
+
+        # Test site
+        _blank = self.generic_definition.copy()
+        _blank.update({
             'url': 'http://www.quotationspage.com/random.php',
             'tag': 'test',
-                'last_checked': 0,
-                'last_changed' : 0,
             'uuid': str(uuid.uuid4())
         })
-
-
-            with open('/datastore/url-watches.json', 'w') as json_file:
-                json.dump(self.data, json_file)
+        self.data['watching'].append(_blank)
 
     def update_watch(self, uuid, val, var):
         # Probably their should be dict...
@@ -49,7 +70,6 @@ class ChangeDetectionStore:
                 # print("Updated..", val)
                 self.sync_to_json()
 
-
     def url_exists(self, url):
 
         # Probably their should be dict...
@@ -74,13 +94,15 @@ class ChangeDetectionStore:
         validators.url(url)
 
         # @todo use a common generic version of this
-        self.data['watching'].append({
+
+        _blank = self.generic_definition.copy()
+        _blank.update({
             'url': url,
             'tag': tag,
-            'last_checked':0,
-            'last_changed': 0,
             'uuid': str(uuid.uuid4())
         })
+        self.data['watching'].append(_blank)
+
         self.sync_to_json()
         # @todo throw custom exception