Save automatically, improve mocks

CHDataManagement/Model/Settings/Settings.swift

@@ -1,6 +1,7 @@
 import Foundation
+import Combine
 
-final class Settings: ObservableObject {
+final class Settings: ChangeObservableItem {
 
     @Published
     var general: GeneralSettings
@@ -21,6 +22,10 @@ final class Settings: ObservableObject {
     @Published
     var audioPlayer: AudioPlayerSettings
 
+    weak var content: Content?
+
+    var cancellables: Set<AnyCancellable> = []
+
     init(general: GeneralSettings,
          paths: PathSettings,
          navigation: NavigationSettings,
@@ -40,6 +45,10 @@ final class Settings: ObservableObject {
         posts.remove(file)
         audioPlayer.remove(file)
     }
+
+    func needsSaving() {
+        content?.needsSave()
+    }
 }
 
 // MARK: Storage
@@ -54,6 +63,7 @@ extension Settings {
             posts: .init(context: context, data: data.posts),
             pages: .init(context: context, data: data.pages),
             audioPlayer: .init(context: context, data: data.audioPlayer))
+        content = context.content
     }
 
     func data(tagOverview: Tag?) -> Data {
@@ -67,7 +77,7 @@ extension Settings {
             tagOverview: tagOverview?.data)
     }
 
-    struct Data: Codable {
+    struct Data: Codable, Equatable {
         let general: GeneralSettings.Data
         let paths: PathSettings.Data
         let navigation: NavigationSettings.Data
@@ -76,6 +86,10 @@ extension Settings {
         let audioPlayer: AudioPlayerSettings.Data
         let tagOverview: Tag.Data?
     }
+
+    func saveToDisk(_ data: Data) -> Bool {
+        content?.storage.save(settings: data) ?? false
+    }
 }
 
 extension Settings {