Playlists and channels in the sidebar

Model/Playlists.swift

@@ -0,0 +1,35 @@
+import Foundation
+import Siesta
+import SwiftUI
+
+final class Playlists: ObservableObject {
+    @Published var playlists = [Playlist]()
+
+    var resource: Resource {
+        InvidiousAPI.shared.playlists
+    }
+
+    init() {
+        load()
+    }
+
+    var all: [Playlist] {
+        playlists.sorted { $0.title.lowercased() < $1.title.lowercased() }
+    }
+
+    func find(id: Playlist.ID) -> Playlist? {
+        all.first { $0.id == id }
+    }
+
+    func reload() {
+        load()
+    }
+
+    fileprivate func load() {
+        resource.load().onSuccess { resource in
+            if let playlists: [Playlist] = resource.typedContent() {
+                self.playlists = playlists
+            }
+        }
+    }
+}