How did I ever live without interfaces

src/app.d.ts

@@ -17,10 +17,8 @@ declare global {
         password?: string
     }
 
-    type ServiceType = 'jellyfin' | 'youtube-music'
-
     interface Service {
-        type: ServiceType
+        type: 'jellyfin' | 'youtube-music'
         userId: string
         urlOrigin: string
     }
@@ -32,6 +30,39 @@ declare global {
         accessToken: string
     }
 
+    interface MediaItem {
+        connection: Connection
+        id: string
+        name: string
+        duration: number
+        thumbnail?: string
+    }
+
+    interface Song extends MediaItem {
+        artists?: Artist[]
+        albumId?: string
+        audio: string
+        video?: string
+        releaseDate: string
+    }
+
+    interface Album extends MediaItem {
+        artists: Artist[]
+        songs: Song[]
+        releaseDate: string
+    }
+
+    interface Playlist extends MediaItem {
+        songs: Song[]
+        description?: string
+    }
+
+    interface Artist {
+        id: string
+        name: string
+        // Add more here in the future
+    }
+
     namespace Jellyfin {
         // The jellyfin API will not always return the data it says it will, for example /Users/AuthenticateByName says it will
         // retrun the ServerName, it wont. This must be fetched from /System/Info.
@@ -61,6 +92,50 @@ declare global {
         interface System {
             ServerName: string
         }
+
+        interface MediaItem {
+            Name: string
+            Id: string
+            RunTimeTicks: number
+            Type: 'Audio' | 'MusicAlbum' | 'Playlist'
+            ImageTags?: {
+                Primary?: string
+            }
+        }
+
+        interface Song extends Jellyfin.MediaItem {
+            ProductionYear: number
+            Type: 'Audio'
+            ArtistItems?: {
+                Name: string
+                Id: string
+            }[]
+            Album?: string
+            AlbumId?: string
+            AlbumPrimaryImageTag?: string
+            AlbumArtists?: {
+                Name: string
+                Id: string
+            }[]
+        }
+
+        interface Album extends Jellyfin.MediaItem {
+            ProductionYear: number
+            Type: 'MusicAlbum'
+            ArtistItems?: {
+                Name: string
+                Id: string
+            }[]
+            AlbumArtists?: {
+                Name: string
+                Id: string
+            }[]
+        }
+
+        interface Playlist extends Jellyfin.MediaItem {
+            Type: 'Playlist'
+            ChildCount: number
+        }
     }
 
     namespace YouTubeMusic {
@@ -73,53 +148,6 @@ declare global {
             service: YTService
         }
     }
-
-    interface MediaItem {
-        connectionId: string
-        serviceType: string
-        id: string
-        name: string
-        duration: number
-        thumbnail: string
-    }
-
-    interface Song extends MediaItem {
-        artists: {
-            id: string
-            name: string
-        }[]
-        album?: {
-            id: string
-            name: string
-            artists: {
-                id: string
-                name: string
-            }[]
-        }
-        audio: string
-        video?: string
-        releaseDate: string
-    }
-
-    interface Album extends MediaItem {
-        artists: {
-            id: string
-            name: string
-        }[]
-        songs: Song[]
-        releaseDate: string
-    }
-
-    interface Playlist extends MediaItem {
-        songs: Song[]
-        description?: string
-    }
-
-    interface Artist {
-        id: string
-        name: string
-        // Add more here in the future
-    }
 }
 
 export {}

src/lib/components/navbar/navTab.svelte

@@ -10,11 +10,8 @@
     export let disabled = false
     export let nav: NavTab
 
-    import { createEventDispatcher } from 'svelte'
     import { goto } from '$app/navigation'
 
-    const dispatch = createEventDispatcher()
-
     let button: HTMLButtonElement
 </script>
 

src/lib/components/navbar/playlistTab.svelte

@@ -33,7 +33,7 @@
 <button
     {disabled}
     bind:this={button}
-    class="relative aspect-square w-full rounded-lg bg-cover bg-center transition-all"
+    class="relative aspect-square w-full flex-shrink-0 rounded-lg bg-cover bg-center transition-all"
     style="background-image: url({playlist.thumbnail});"
     on:mouseenter={() => dispatch('mouseenter', { ...calculateCenter(button), content: playlist.name })}
     on:mouseleave={() => dispatch('mouseleave')}

src/lib/service-managers/jellyfin.ts

@@ -0,0 +1,42 @@
+export class Jellyfin {
+    static audioPresets = (userId: string) => {
+        return {
+            MaxStreamingBitrate: '999999999',
+            Container: 'opus,webm|opus,mp3,aac,m4a|aac,m4b|aac,flac,webma,webm|webma,wav,ogg',
+            TranscodingContainer: 'ts',
+            TranscodingProtocol: 'hls',
+            AudioCodec: 'aac',
+            userId,
+        }
+    }
+
+    static mediaItemFactory = (item: Jellyfin.MediaItem, connection: Connection): MediaItem => {}
+
+    static songFactory = (song: Jellyfin.Song, connection: Connection): Song => {
+        const { id, service } = connection
+
+        const artists: Artist[] | undefined = song.ArtistItems
+            ? Array.from(song.ArtistItems, (artist) => {
+                  return { name: artist.Name, id: artist.Id }
+              })
+            : undefined
+
+        const thumbnail = song.ImageTags?.Primary ? new URL(`Items/${song.Id}/Images/Primary`, service.urlOrigin).href : song.AlbumPrimaryImageTag ? new URL(`Items/${song.AlbumId}/Images/Primary`).href : undefined
+
+        const audoSearchParams = new URLSearchParams(this.audioPresets(service.userId))
+        const audioSource = new URL(`Audio/${song.Id}/universal?${audoSearchParams.toString()}`, service.urlOrigin).href
+
+        const factorySong: Song = {
+            connection,
+            id: song.Id,
+            name: song.Name,
+            duration: Math.floor(song.RunTimeTicks / 10000),
+            thumbnail,
+            artists,
+            albumId: song.AlbumId,
+            audio: audioSource,
+            releaseDate: String(song.ProductionYear),
+        }
+        return factorySong
+    }
+}

src/routes/api/users/[userId]/connections/+server.ts

@@ -7,7 +7,7 @@ export const GET: RequestHandler = async ({ params }) => {
     const userId = params.userId as string
 
     const connections = Connections.getUserConnections(userId)
-    return new Response(JSON.stringify(connections))
+    return Response.json(connections)
 }
 
 // This schema should be identical to the Connection Data Type but without the id and userId
@@ -30,7 +30,7 @@ export const POST: RequestHandler = async ({ params, request }) => {
 
     const { service, accessToken } = connection
     const newConnection = Connections.addConnection(userId, service, accessToken)
-    return new Response(JSON.stringify(newConnection))
+    return Response.json(newConnection)
 }
 
 export const DELETE: RequestHandler = async ({ request }) => {

src/routes/api/users/[userId]/recommendations/+server.ts

@@ -0,0 +1,34 @@
+import type { RequestHandler } from '@sveltejs/kit'
+import { SECRET_INTERNAL_API_KEY } from '$env/static/private'
+
+// This is temporary functionally for the sake of developing the app.
+// In the future will implement more robust algorith for offering recommendations
+export const GET: RequestHandler = async ({ params, fetch }) => {
+    const userId = params.userId as string
+
+    const connectionsResponse = await fetch(`/api/users/${userId}/connections`, { headers: { apikey: SECRET_INTERNAL_API_KEY } })
+    const userConnections: Connection[] = await connectionsResponse.json()
+
+    const recommendations = []
+
+    for (const connection of userConnections) {
+        const { service, accessToken } = connection
+
+        switch (service.type) {
+            case 'jellyfin':
+                const mostPlayedSongsSearchParams = new URLSearchParams({
+                    SortBy: 'PlayCount',
+                    SortOrder: 'Descending',
+                    IncludeItemTypes: 'Audio',
+                    Recursive: 'true',
+                    limit: '10',
+                })
+
+                const mostPlayedSongsURL = new URL(`/Users/${service.userId}/Items?${mostPlayedSongsSearchParams.toString()}`, service.urlOrigin).href
+                const requestHeaders = new Headers({ Authorization: `MediaBrowser Token="${accessToken}"` })
+
+                const mostPlayedResponse = await fetch(mostPlayedSongsURL, { headers: requestHeaders })
+                const mostPlayedData = await mostPlayedResponse.json()
+        }
+    }
+}

src/routes/settings/connections/+page.svelte

@@ -1,5 +1,4 @@
 <script lang="ts">
-    import { fly } from 'svelte/transition'
     import Services from '$lib/services.json'
     import JellyfinAuthBox from './jellyfinAuthBox.svelte'
     import { newestAlert } from '$lib/stores.js'
@@ -38,10 +37,9 @@
         }
 
         return async ({ result }) => {
-            switch (result.type) {
+            if (result.type === 'failure') {
-                case 'failure':
                 return ($newestAlert = ['warning', result.data?.message])
-                case 'success':
+            } else if (result.type === 'success') {
                 if (result.data?.newConnection) {
                     const newConnection: Connection = result.data.newConnection
                     connections = [newConnection, ...connections]
@@ -82,7 +80,9 @@
             <ConnectionProfile {connection} submitFunction={submitCredentials} />
         {/each}
     </div>
+    {#if newConnectionModal !== null}
         <svelte:component this={newConnectionModal} submitFunction={submitCredentials} on:close={() => (newConnectionModal = null)} />
+    {/if}
 </main>
 
 <style>

src/routes/settings/connections/jellyfinAuthBox.svelte

@@ -1,5 +1,6 @@
 <script lang="ts">
     import type { SubmitFunction } from '@sveltejs/kit'
+    import { scale } from 'svelte/transition'
     import { createEventDispatcher } from 'svelte'
     import { enhance } from '$app/forms'
 
@@ -8,7 +9,7 @@
     const dispatch = createEventDispatcher()
 </script>
 
-<form method="post" use:enhance={submitFunction} class="fixed left-1/2 top-1/2 -translate-x-1/2 -translate-y-1/2">
+<form method="post" use:enhance={submitFunction} class="fixed left-1/2 top-1/2 -translate-x-1/2 -translate-y-1/2" transition:scale>
     <div id="main-box" class="relative flex aspect-video w-screen max-w-2xl flex-col justify-center gap-9 rounded-xl bg-neutral-925 px-8">
         <h1 class="text-center text-4xl">Jellyfin Sign In</h1>
         <div class="flex w-full flex-col gap-5">