feat: allow settings export/import (closes #4514)

resources/l10n/Localizable.strings

@@ -190,12 +190,18 @@
 /* No comment provided by engineer. */
 "End" = "End";
 
+/* No comment provided by engineer. */
+"Export…" = "Export…";
+
 /* No comment provided by engineer. */
 "Fade in animation of Preview" = "Fade in animation of Preview";
 
 /* No comment provided by engineer. */
 "Fade out animation of Switcher" = "Fade out animation of Switcher";
 
+/* No comment provided by engineer. */
+"Failed to import settings" = "Failed to import settings";
+
 /* No comment provided by engineer. */
 "Focus selected window" = "Focus selected window";
 
@@ -241,6 +247,9 @@
 /* No comment provided by engineer. */
 "Ignore shortcuts when active" = "Ignore shortcuts when active";
 
+/* No comment provided by engineer. */
+"Import…" = "Import…";
+
 /* No comment provided by engineer. */
 "Keep open" = "Keep open";
 
@@ -410,6 +419,9 @@
 /* Menubar option */
 "Send feedback…" = "Send feedback…";
 
+/* No comment provided by engineer. */
+"Settings imported" = "Settings imported";
+
 /* Menubar option */
 "Settings…" = "Settings…";
 
@@ -509,6 +521,9 @@
 /* No comment provided by engineer. */
 "System Default" = "System Default";
 
+/* No comment provided by engineer. */
+"The application needs to restart to apply the imported settings." = "The application needs to restart to apply the imported settings.";
+
 /* No comment provided by engineer. */
 "The application needs to restart to apply the language change." = "The application needs to restart to apply the language change.";
 

src/ui/settings-window/tabs/GeneralTab.swift

@@ -31,7 +31,12 @@ class GeneralTab {
         table.addRow(menubarIcon)
         table.addNewTable()
         table.addRow(language)
-        let view = TableGroupSetView(originalViews: [table], bottomPadding: 0)
+        let exportButton = NSButton(title: NSLocalizedString("Export…", comment: ""), target: nil, action: nil)
+        exportButton.onAction = { _ in exportSettings() }
+        let importButton = NSButton(title: NSLocalizedString("Import…", comment: ""), target: nil, action: nil)
+        importButton.onAction = { _ in importSettings() }
+        let tools = StackView([exportButton, importButton], .horizontal)
+        let view = TableGroupSetView(originalViews: [table, tools], bottomPadding: 0)
         return view
     }
 
@@ -64,6 +69,39 @@ class GeneralTab {
         }
     }
 
+    private static func exportSettings() {
+        let panel = NSSavePanel()
+        panel.nameFieldStringValue = "\(App.bundleIdentifier).plist"
+        panel.allowedFileTypes = ["plist"]
+        guard panel.runModal() == .OK, let url = panel.url else { return }
+        NSDictionary(dictionary: Preferences.all).write(to: url, atomically: true)
+    }
+
+    private static func importSettings() {
+        let panel = NSOpenPanel()
+        panel.allowedFileTypes = ["plist"]
+        panel.allowsMultipleSelection = false
+        guard panel.runModal() == .OK, let url = panel.url else { return }
+        guard let dict = NSDictionary(contentsOf: url) as? [String: Any] else {
+            let alert = NSAlert()
+            alert.alertStyle = .critical
+            alert.messageText = NSLocalizedString("Failed to import settings", comment: "")
+            alert.runModal()
+            return
+        }
+        UserDefaults.standard.setPersistentDomain(dict, forName: App.bundleIdentifier)
+        CachedUserDefaults.cache.withLock { $0.removeAll() }
+        let alert = NSAlert()
+        alert.alertStyle = .informational
+        alert.messageText = NSLocalizedString("Settings imported", comment: "")
+        alert.informativeText = NSLocalizedString("The application needs to restart to apply the imported settings.", comment: "")
+        alert.addButton(withTitle: NSLocalizedString("Restart Now", comment: ""))
+        alert.addButton(withTitle: NSLocalizedString("Later", comment: ""))
+        if alert.runModal() == .alertFirstButtonReturn {
+            App.app.restart()
+        }
+    }
+
     static func setLanguageCallback(_ sender: NSControl) {
         if Preferences.language == .systemDefault {
             UserDefaults.standard.removeObject(forKey: "AppleLanguages")