Don't save preview data to keychain + get rid of shared controller instances

OpenHaystack/OpenHaystack/HaystackApp/AccessoryController.swift

@@ -10,18 +10,20 @@ import Foundation
 import SwiftUI
 
 class AccessoryController: ObservableObject {
-    static let shared = AccessoryController()
-
     @Published var accessories: [Accessory]
     var selfObserver: AnyCancellable?
     var listElementsObserver = [AnyCancellable]()
 
-    init() {
-        self.accessories = KeychainController.loadAccessoriesFromKeychain()
+    init(accessories: [Accessory]) {
+        self.accessories = accessories
         initAccessoryObserver()
         initObserver()
     }
 
+    convenience init() {
+        self.init(accessories: KeychainController.loadAccessoriesFromKeychain())
+    }
+
     func initAccessoryObserver() {
         self.selfObserver = self.objectWillChange.sink { _ in
             // objectWillChange is called before the values are actually changed,
@@ -45,19 +47,13 @@ class AccessoryController: ObservableObject {
         })
     }
 
-    init(accessories: [Accessory]) {
-        self.accessories = accessories
-        initAccessoryObserver()
-        initObserver()
-    }
-
     func save() throws {
         try KeychainController.storeInKeychain(accessories: self.accessories)
     }
 
     func updateWithDecryptedReports(devices: [FindMyDevice]) {
         // Assign last locations
-        for device in FindMyController.shared.devices {
+        for device in devices {
             if let idx = self.accessories.firstIndex(where: { $0.id == Int(device.deviceId) }) {
                 self.objectWillChange.send()
                 let accessory = self.accessories[idx]
@@ -91,3 +87,9 @@ class AccessoryController: ObservableObject {
         return accessory
     }
 }
+
+class AccessoryControllerPreview: AccessoryController {
+    override func save() {
+        // don't allow saving dummy data to keychain
+    }
+}

OpenHaystack/OpenHaystack/HaystackApp/Views/ManageAccessoriesView.swift

@@ -10,7 +10,7 @@ import SwiftUI
 
 struct ManageAccessoriesView: View {
 
-    @ObservedObject var accessoryController = AccessoryController.shared
+    @EnvironmentObject var accessoryController: AccessoryController
     var accessories: [Accessory] {
         return self.accessoryController.accessories
     }

OpenHaystack/OpenHaystack/HaystackApp/Views/OpenHaystackMainView.swift

@@ -12,7 +12,8 @@ import SwiftUI
 struct OpenHaystackMainView: View {
 
     @State var loading = false
-    @ObservedObject var accessoryController = AccessoryController.shared
+    @EnvironmentObject var accessoryController: AccessoryController
+    @EnvironmentObject var findMyController: FindMyController
     var accessories: [Accessory] {
         return self.accessoryController.accessories
     }
@@ -169,7 +170,7 @@ struct OpenHaystackMainView: View {
                 self.isLoading = true
             }
 
-            FindMyController.shared.fetchReports(for: accessories, with: tokenData) { result in
+            findMyController.fetchReports(for: accessories, with: tokenData) { result in
                 switch result {
                 case .failure(let error):
                     os_log(.error, "Downloading reports failed %@", error.localizedDescription)
@@ -365,12 +366,11 @@ struct OpenHaystackMainView: View {
 }
 
 struct OpenHaystackMainView_Previews: PreviewProvider {
-
-    static var accessories: [Accessory] = PreviewData.accessories
-
+    static var accessoryController = AccessoryControllerPreview(accessories: PreviewData.accessories) as AccessoryController
+    
     static var previews: some View {
-        OpenHaystackMainView(accessoryController: AccessoryController(accessories: accessories))
-            .frame(width: 800, height: 600, alignment: .center)
+        OpenHaystackMainView()
+            .environmentObject(accessoryController)
     }
 }