replace jellyfin utils with class method

jellyfin/models.py

@@ -1,6 +1,8 @@
 from pydantic import BaseModel
 from enum import Enum
 from typing import Optional, Union
+from discord.models import DiscordRPCUpdatePayload
+from pypresence.types import ActivityType
 
 
 class JellyfinMediaType(str, Enum):
@@ -32,3 +34,45 @@ class JellyfinMediaItem(BaseModel):
     metadata: Union[JellyfinMusicMediaMetadata,
                     JellyfinMovieMediaMetadata,
                     JellyfinEpisodeMediaMetadata]
+
+    def to_rpc_payload(self) -> DiscordRPCUpdatePayload:
+        """
+        Converts a JellyfinMediaItem to a DiscordRPCUpdatePayload.
+
+        Returns:
+            DiscordRPCUpdatePayload: The converted Discord RPC update payload.
+        """
+        if self.type == JellyfinMediaType.AUDIO:
+            return DiscordRPCUpdatePayload(
+                id=self.id,
+                title=f"Listening to {
+                    self.name}",
+                subtitle=f"by {
+                    self.metadata.artist}",
+                image_url=self.image_url,
+                details=self.metadata.album,
+                activity_type=ActivityType.LISTENING,
+                start=self.start,
+                end=self.end)
+        elif self.type == JellyfinMediaType.MOVIE:
+            return DiscordRPCUpdatePayload(
+                id=self.id,
+                title=f"Watching {self.name}",
+                subtitle=self.metadata.date,
+                image_url=self.image_url,
+                details=self.name,
+                activity_type=ActivityType.WATCHING,
+                start=self.start,
+                end=self.end
+            )
+        elif self.type == JellyfinMediaType.EPISODE:
+            return DiscordRPCUpdatePayload(
+                id=self.id,
+                title=f"Watching {self.name}",
+                subtitle=self.metadata.subtitle,
+                image_url=self.image_url,
+                details=self.name,
+                activity_type=ActivityType.WATCHING,
+                start=self.start,
+                end=self.end
+            )