Work on provider manager and UI

app/YtManagerApp/providers/dummy_video_provider.py

@@ -20,6 +20,9 @@ class DummyVideoProvider(VideoProvider):
     def configure(self, configuration: Dict[str, Any]) -> None:
         print(configuration)
 
+    def unconfigure(self):
+        pass
+
     def validate_configuration(self, configuration: Dict[str, Any]):
         print("Validating...")
         if configuration["number_of_something"] >= 10:

app/YtManagerApp/providers/video_provider.py

@@ -1,4 +1,5 @@
 from abc import abstractmethod, ABC
+from enum import Enum
 from typing import Dict, Iterable, List, Any
 
 from django.forms import Field
@@ -6,6 +7,12 @@ from django.forms import Field
 from YtManagerApp.models import Subscription, Video
 
 
+class VideoProviderState(Enum):
+    NOT_CONFIGURED = 0
+    OK = 1
+    ERROR = 2
+
+
 class ProviderValidationError(ValueError):
     """
     Exception type thrown when validating configurations.
@@ -44,6 +51,9 @@ class VideoProvider(ABC):
     """
     settings: Dict[str, Field] = {}
 
+    def __init__(self):
+        self.state = VideoProviderState.NOT_CONFIGURED
+
     @abstractmethod
     def configure(self, configuration: Dict[str, Any]) -> None:
         """
@@ -53,6 +63,14 @@ class VideoProvider(ABC):
         """
         pass
 
+    @abstractmethod
+    def unconfigure(self) -> None:
+        """
+        Destroys video provider configuration
+        :return:
+        """
+        pass
+
     @abstractmethod
     def validate_configuration(self, configuration: Dict[str, Any]) -> None:
         """

app/YtManagerApp/providers/ytapi_video_provider.py

@@ -25,6 +25,10 @@ class YouTubeApiVideoProvider(VideoProvider):
         self.__api_key = configuration['api_key']
         self.__api = yt.YouTube(key=self.__api_key)
 
+    def unconfigure(self):
+        self.__api_key = None
+        self.__api = None
+
     def validate_configuration(self, configuration: Dict[str, Any]):
         # TODO: implement
         pass