fix(previews): enable local currency SwiftUI previews

Author: jeanpierreroma

DashWallet.xcodeproj/xcshareddata/xcschemes/dashwallet.xcscheme

@@ -73,7 +73,7 @@
       </Testables>
    </TestAction>
    <LaunchAction
-      buildConfiguration = "Testflight"
+      buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       language = "en"

DashWallet/AppDelegate.m

@@ -81,6 +81,12 @@ - (void)registerForPushNotifications {
 #pragma mark - UIApplicationDelegate
 
 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(nullable NSDictionary *)launchOptions {
+#if DEBUG
+    if ([NSProcessInfo.processInfo.environment[@"XCODE_RUNNING_FOR_PREVIEWS"] isEqualToString:@"1"]) {
+        return YES;
+    }
+#endif /* DEBUG */
+
 #if FRESH_INSTALL
     [[NSUserDefaults standardUserDefaults] removePersistentDomainForName:[[NSBundle mainBundle] bundleIdentifier]];
     NSArray *secItemClasses = @[(__bridge id)kSecClassGenericPassword,

DashWallet/Sources/UI/Menu/Settings/LocalCurrency/LocalCurrencyView.swift

@@ -38,20 +38,9 @@ struct LocalCurrencyView: View {
         self.onBack = onBack
     }
 
-    /// Preview / testing init — accepts a pre-built ViewModel.
-    fileprivate init(
-        viewModel: LocalCurrencyViewModel,
-        onSelect: @escaping (String) -> Void,
-        onBack: (() -> Void)? = nil
-    ) {
-        self._viewModel = StateObject(wrappedValue: viewModel)
-        self.onSelect = onSelect
-        self.onBack = onBack
-    }
-
     var body: some View {
         ZStack(alignment: .top) {
-            // Background
+            background
 
             LocalCurrencyScrollContentView(
                 headerHeight: fullHeaderSize.height,
@@ -77,7 +66,10 @@ struct LocalCurrencyView: View {
                 }
             }
         }
-        .background(Color.primaryBackground)
+    }
+
+    private var background: some View {
+        Color.primaryBackground
     }
 }
 
@@ -179,6 +171,24 @@ private struct LocalCurrencyTopOverlayView: View {
 // MARK: - Preview
 
 #if DEBUG
+extension LocalCurrencyView {
+    fileprivate init(
+        viewModel: LocalCurrencyViewModel,
+        onSelect: @escaping (String) -> Void,
+        onBack: (() -> Void)? = nil
+    ) {
+        self._viewModel = StateObject(wrappedValue: viewModel)
+        self.onSelect = onSelect
+        self.onBack = onBack
+    }
+}
+
+extension LocalCurrencyViewModel {
+    convenience init(items: [CurrencyItem], selectedCode: String) {
+        self.init(allItems: items, selectedCurrencyCode: selectedCode)
+    }
+}
+
 #Preview {
     LocalCurrencyView(
         viewModel: LocalCurrencyViewModel(

DashWallet/Sources/UI/Menu/Settings/LocalCurrency/LocalCurrencyViewModel.swift

@@ -27,8 +27,14 @@ class LocalCurrencyViewModel: ObservableObject {
     @Published private(set) var filteredItems: [CurrencyItem] = []
     @Published var selectedCurrencyCode: String
 
-    /// Production init — loads currencies from CurrencyExchangerObjcWrapper.
-    init(currencyCode: String? = nil) {
+    init(allItems: [CurrencyItem], selectedCurrencyCode: String) {
+        self.allItems = allItems
+        self.selectedCurrencyCode = selectedCurrencyCode
+        self.filteredItems = allItems
+        setupSearch()
+    }
+
+    convenience init(currencyCode: String? = nil) {
         let formatter = NumberFormatter()
         formatter.maximumFractionDigits = 2
         formatter.minimumFractionDigits = 2
@@ -41,18 +47,7 @@ class LocalCurrencyViewModel: ObservableObject {
                 priceString: formatter.string(from: price.price)
             )
         }
-        self.allItems = items
-        self.selectedCurrencyCode = currencyCode ?? App.fiatCurrency
-        self.filteredItems = items
-        setupSearch()
-    }
-
-    /// Preview / testing init — accepts pre-built items without DashSync.
-    init(items: [CurrencyItem], selectedCode: String) {
-        self.allItems = items
-        self.selectedCurrencyCode = selectedCode
-        self.filteredItems = items
-        setupSearch()
+        self.init(allItems: items, selectedCurrencyCode: currencyCode ?? App.fiatCurrency)
     }
 
     func select(currencyCode: String) {
@@ -82,6 +77,8 @@ class LocalCurrencyViewModel: ObservableObject {
     }
 }
 
+
+
 // MARK: - Flag mapping
 
 extension LocalCurrencyViewModel {