added predicates

mobilizon_bots/publishers/__init__.py

@@ -1,25 +1,22 @@
 from typing import Iterable
 
-from . import abstract
-from . import telegram
-
-# WIP
-# from . import twitter
+from mobilizon_bots.publishers import abstract
 
 
 def run(publishers: Iterable[abstract.AbstractPublisher]) -> dict:
     invalid_credentials, invalid_event = [], []
     for p in publishers:
-        if not p.validate_credentials():
+        if not p.are_credetials_valid():
             invalid_credentials.append(p)
-        if not p.validate_event():
+        if not p.is_event_valid():
             invalid_event.append(p)
     if invalid_credentials or invalid_event:
+        # TODO: consider to use exceptions or data class if necessary
         return {
-            'status': 'fail',
-            'description': "Validation failed for at least 1 publisher",
-            'invalid_credentials': invalid_credentials,
-            'invalid_event': invalid_event,
+            "status": "fail",
+            "description": "Validation failed for at least 1 publisher",
+            "invalid_credentials": invalid_credentials,
+            "invalid_event": invalid_event,
         }
     failed_publishers, successful_publishers = [], []
     for p in publishers:
@@ -29,12 +26,12 @@ def run(publishers: Iterable[abstract.AbstractPublisher]) -> dict:
             failed_publishers.append(p)
     if failed_publishers:
         return {
-            'status': 'fail',
-            'description': "Posting failed for at least 1 publisher",
-            'failed_publishers': failed_publishers,
-            'successful_publishers': successful_publishers,
+            "status": "fail",
+            "description": "Posting failed for at least 1 publisher",
+            "failed_publishers": failed_publishers,
+            "successful_publishers": successful_publishers,
         }
     return {
-        'status': 'success',
-        'description': "https://www.youtube.com/watch?v=2lHgmC6PBBE",
+        "status": "success",
+        "description": "https://www.youtube.com/watch?v=2lHgmC6PBBE",
     }

mobilizon_bots/publishers/abstract.py

@@ -46,6 +46,21 @@ class AbstractPublisher(ABC):
         """
         raise NotImplementedError
 
+    @abstractmethod
+    def are_credetials_valid(self):
+        try:
+            self.validate_credentials()
+        except Exception:
+            return False
+        return True
+
+    def is_event_valid(self):
+        try:
+            self.validate_event()
+        except Exception:
+            return False
+        return True
+
     @abstractmethod
     def validate_event(self) -> bool:
         """