Add single file audio player, introduce blocks

CHDataManagement/Model/Settings/AudioPlayerSettings.swift

@@ -0,0 +1,49 @@
+import Foundation
+
+final class AudioPlayerSettings: ObservableObject {
+
+    @Published
+    var playlistCoverImageSize: Int
+
+    @Published
+    var smallCoverImageSize: Int
+
+    @Published
+    var audioPlayerJsFile: FileResource?
+
+    @Published
+    var audioPlayerCssFile: FileResource?
+
+    init(playlistCoverImageSize: Int,
+         smallCoverImageSize: Int,
+         audioPlayerJsFile: FileResource?,
+         audioPlayerCssFile: FileResource?) {
+        self.playlistCoverImageSize = playlistCoverImageSize
+        self.smallCoverImageSize = smallCoverImageSize
+        self.audioPlayerJsFile = audioPlayerJsFile
+        self.audioPlayerCssFile = audioPlayerCssFile
+    }
+
+    init(file: AudioPlayerSettingsFile, files: [String : FileResource]) {
+        self.playlistCoverImageSize = file.playlistCoverImageSize
+        self.smallCoverImageSize = file.smallCoverImageSize
+        self.audioPlayerJsFile = file.audioPlayerJsFile.map { files[$0] }
+        self.audioPlayerCssFile = file.audioPlayerCssFile.map { files[$0] }
+    }
+
+    var file: AudioPlayerSettingsFile {
+        .init(playlistCoverImageSize: playlistCoverImageSize,
+              smallCoverImageSize: smallCoverImageSize,
+              audioPlayerJsFile: audioPlayerJsFile?.id,
+              audioPlayerCssFile: audioPlayerCssFile?.id)
+    }
+}
+
+extension AudioPlayerSettings {
+
+    static let `default`: AudioPlayerSettings = .init(
+        playlistCoverImageSize: 280,
+        smallCoverImageSize: 78,
+        audioPlayerJsFile: nil,
+        audioPlayerCssFile: nil)
+}