Code style upgrade

Handlers/RemoveHandler.py

@@ -0,0 +1,52 @@
+from typing import Union
+from discord.ext.commands import Context
+from discord import Client
+from Handlers.AbstractHandler import AbstractHandler
+from Handlers.HandlerResponse import HandlerResponse
+from Config.Exceptions import BadCommandUsage, VulkanError, ErrorRemoving, InvalidInput, NumberRequired
+
+
+class RemoveHandler(AbstractHandler):
+    def __init__(self, ctx: Context, bot: Client) -> None:
+        super().__init__(ctx, bot)
+
+    async def run(self, position: str) -> HandlerResponse:
+        if not self.player.playlist:
+            embed = self.embeds.NOT_PLAYING()
+            error = BadCommandUsage()
+            return HandlerResponse(self.ctx, embed, error)
+
+        error = self.__validate_input(position)
+        if error:
+            embed = self.embeds.ERROR_EMBED(error.message)
+            return HandlerResponse(self.ctx, embed, error)
+
+        position = self.__sanitize_input(position)
+        if not self.player.playlist.validate_position(position):
+            error = InvalidInput()
+            embed = self.embeds.PLAYLIST_RANGE_ERROR()
+            return HandlerResponse(self.ctx, embed, error)
+
+        try:
+            song = self.player.playlist.remove_song(position)
+            name = song.title if song.title else song.identifier
+
+            embed = self.embeds.SONG_REMOVED(name)
+            return HandlerResponse(self.ctx, embed)
+        except:
+            error = ErrorRemoving()
+            embed = self.embeds.ERROR_REMOVING()
+            return HandlerResponse(self.ctx, embed, error)
+
+    def __validate_input(self, position: str) -> Union[VulkanError, None]:
+        try:
+            position = int(position)
+        except:
+            return NumberRequired(self.messages.ERROR_NUMBER)
+
+    def __sanitize_input(self, position: str) -> int:
+        position = int(position)
+
+        if position == -1:
+            position = len(self.player.playlist)
+        return position