fix(sync): propagate connection group membership changes to other devices

Author: datlechin

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+
+- Moving a connection into or out of a group now syncs across devices, instead of leaving it ungrouped on your other Macs.
+
 ## [0.46.0] - 2026-05-28
 
 ### Added

TablePro/Core/Storage/GroupStorage.swift

@@ -104,15 +104,15 @@ final class GroupStorage {
 
         let storage = connectionStorageProvider()
         var connections = storage.loadConnections()
-        var changed = false
+        var changed: [DatabaseConnection] = []
         for i in connections.indices {
             if let gid = connections[i].groupId, allIdsToDelete.contains(gid) {
                 connections[i].groupId = nil
-                changed = true
+                changed.append(connections[i])
             }
         }
-        if changed {
-            if !storage.saveConnections(connections) {
+        if !changed.isEmpty {
+            if !storage.updateConnections(changed) {
                 Self.logger.error("Failed to clear groupId references after group deletion")
             }
         }

TablePro/ViewModels/WelcomeViewModel.swift

@@ -415,10 +415,12 @@ final class WelcomeViewModel {
 
     func moveConnections(_ targets: [DatabaseConnection], toGroup groupId: UUID) {
         let ids = Set(targets.map(\.id))
+        var updated: [DatabaseConnection] = []
         for i in connections.indices where ids.contains(connections[i].id) {
             connections[i].groupId = groupId
+            updated.append(connections[i])
         }
-        guard storage.saveConnections(connections) else {
+        guard storage.updateConnections(updated) else {
             connections = storage.loadConnections()
             rebuildTree()
             return
@@ -428,10 +430,12 @@ final class WelcomeViewModel {
 
     func removeFromGroup(_ targets: [DatabaseConnection]) {
         let ids = Set(targets.map(\.id))
+        var updated: [DatabaseConnection] = []
         for i in connections.indices where ids.contains(connections[i].id) {
             connections[i].groupId = nil
+            updated.append(connections[i])
         }
-        guard storage.saveConnections(connections) else {
+        guard storage.updateConnections(updated) else {
             connections = storage.loadConnections()
             rebuildTree()
             return

TableProTests/Core/Storage/GroupStorageTests.swift

@@ -14,6 +14,9 @@ final class GroupStorageTests: XCTestCase {
     private var syncDefaults: UserDefaults!
     private var syncSuiteName: String!
     private var storage: GroupStorage!
+    private var tracker: SyncChangeTracker!
+    private var connectionStorage: ConnectionStorage!
+    private var connectionFileURL: URL!
 
     override func setUp() {
         super.setUp()
@@ -23,18 +26,38 @@ final class GroupStorageTests: XCTestCase {
         syncSuiteName = "com.TablePro.tests.Sync.\(unique)"
         syncDefaults = UserDefaults(suiteName: syncSuiteName)!
         let metadata = SyncMetadataStorage(userDefaults: syncDefaults)
-        let tracker = SyncChangeTracker(metadataStorage: metadata)
-        storage = GroupStorage(userDefaults: defaults, syncTracker: tracker)
+        tracker = SyncChangeTracker(metadataStorage: metadata)
+        connectionFileURL = FileManager.default.temporaryDirectory
+            .appendingPathComponent("tablepro-tests")
+            .appendingPathComponent("group-connections_\(unique).json")
+        try? FileManager.default.createDirectory(
+            at: connectionFileURL.deletingLastPathComponent(),
+            withIntermediateDirectories: true
+        )
+        connectionStorage = ConnectionStorage(
+            fileURL: connectionFileURL,
+            userDefaults: defaults,
+            syncTracker: tracker
+        )
+        storage = GroupStorage(
+            userDefaults: defaults,
+            syncTracker: tracker,
+            connectionStorage: connectionStorage
+        )
     }
 
     override func tearDown() {
         defaults.removePersistentDomain(forName: suiteName)
         syncDefaults.removePersistentDomain(forName: syncSuiteName)
+        try? FileManager.default.removeItem(at: connectionFileURL)
         defaults = nil
         suiteName = nil
         syncDefaults = nil
         syncSuiteName = nil
         storage = nil
+        tracker = nil
+        connectionStorage = nil
+        connectionFileURL = nil
         super.tearDown()
     }
 
@@ -129,6 +152,22 @@ final class GroupStorageTests: XCTestCase {
         XCTAssertEqual(loaded[0].name, "Prod")
     }
 
+    func testDeleteGroupClearsMembershipAndMarksConnectionDirtyForSync() {
+        let group = ConnectionGroup(name: "Dev", color: .green)
+        storage.saveGroups([group])
+
+        let connection = DatabaseConnection(name: "Grouped", groupId: group.id)
+        connectionStorage.addConnection(connection)
+        tracker.clearAllDirty(.connection)
+
+        storage.deleteGroup(group)
+
+        let reloaded = connectionStorage.loadConnections()
+        XCTAssertEqual(reloaded.count, 1)
+        XCTAssertNil(reloaded[0].groupId)
+        XCTAssertTrue(tracker.dirtyRecords(for: .connection).contains(connection.id.uuidString))
+    }
+
     // MARK: - Lookup
 
     func testGroupForId() {