doc and style: formatted the whole codebase to pep8 plus added documentation where necessary

app/View/components/general.kv

@@ -1,3 +1,3 @@
-# <MDLabel>:
-#     allow_copy:True
-#     allow_selection:True
+<MDLabel>:
+    allow_copy:True
+    allow_selection:True

app/View/components/media_card/components/media_popup.py

@@ -4,18 +4,29 @@ from kivy.animation import Animation
 from kivy.uix.modalview import ModalView
 
 from kivymd.theming import ThemableBehavior
-from kivymd.uix.behaviors import BackgroundColorBehavior,StencilBehavior,CommonElevationBehavior,HoverBehavior
+from kivymd.uix.behaviors import (
+    BackgroundColorBehavior,
+    StencilBehavior,
+    CommonElevationBehavior,
+    HoverBehavior,
+)
 
 
-class MediaPopup(ThemableBehavior,HoverBehavior,StencilBehavior,CommonElevationBehavior,BackgroundColorBehavior,ModalView):
+class MediaPopup(
+    ThemableBehavior,
+    HoverBehavior,
+    StencilBehavior,
+    CommonElevationBehavior,
+    BackgroundColorBehavior,
+    ModalView,
+):
     caller = ObjectProperty()
     player = ObjectProperty()
 
-    def __init__(self, caller,*args,**kwarg):
+    def __init__(self, caller, *args, **kwarg):
         self.caller = caller
-        super(MediaPopup,self).__init__(*args,**kwarg)
+        super(MediaPopup, self).__init__(*args, **kwarg)
 
-    
     def open(self, *_args, **kwargs):
         """Display the modal in the Window.
 
@@ -26,33 +37,32 @@ class MediaPopup(ThemableBehavior,HoverBehavior,StencilBehavior,CommonElevationB
 
         """
         from kivy.core.window import Window
+
         if self._is_open:
             return
         self._window = Window
         self._is_open = True
-        self.dispatch('on_pre_open')
+        self.dispatch("on_pre_open")
         Window.add_widget(self)
-        Window.bind(
-            on_resize=self._align_center,
-            on_keyboard=self._handle_keyboard)
+        Window.bind(on_resize=self._align_center, on_keyboard=self._handle_keyboard)
         self.center = self.caller.to_window(*self.caller.center)
-        self.fbind('center', self._align_center)
-        self.fbind('size', self._align_center)
-        if kwargs.get('animation', True):
-            ani = Animation(_anim_alpha=1., d=self._anim_duration)
-            ani.bind(on_complete=lambda *_args: self.dispatch('on_open'))
+        self.fbind("center", self._align_center)
+        self.fbind("size", self._align_center)
+        if kwargs.get("animation", True):
+            ani = Animation(_anim_alpha=1.0, d=self._anim_duration)
+            ani.bind(on_complete=lambda *_args: self.dispatch("on_open"))
             ani.start(self)
         else:
-            self._anim_alpha = 1.
-            self.dispatch('on_open')
+            self._anim_alpha = 1.0
+            self.dispatch("on_open")
 
     def _align_center(self, *_args):
         if self._is_open:
             self.center = self.caller.to_window(*self.caller.center)
 
-
-    def on_leave(self,*args):
+    def on_leave(self, *args):
         def _leave(dt):
             if not self.hovering:
                 self.dismiss()
-        Clock.schedule_once(_leave,2)
+
+        Clock.schedule_once(_leave, 2)

app/View/components/navrail.kv

@@ -1,8 +1,3 @@
-<CommonNavigationRailItem@MDNavigationRailItem>
-    icon:""
-    text:""
-
-
 <CommonNavigationRailItem>
     MDNavigationRailItemIcon:
         icon:root.icon