Show overlapping times

lib/data/models/task_model.dart

@@ -352,6 +352,35 @@ abstract class TaskEntity extends Object
     return isValid && countRunning <= 1;
   }
 
+  List get getInvalidTimeIndices {
+    final times = getTaskTimes();
+    DateTime lastDateTime = DateTime(2000);
+
+    final indices = <int>[];
+    int counter = 0;
+
+    times.forEach((time) {
+      final startDate = time.startDate;
+      final endDate = time.endDate;
+
+      if (time.isRunning) {
+        //
+      } else {
+        if (startDate.isBefore(lastDateTime) || startDate.isAfter(endDate)) {
+          indices.add(counter);
+        }
+        if (endDate.isBefore(startDate) || endDate.isBefore(lastDateTime)) {
+          indices.add(counter);
+        }
+        lastDateTime = lastDateTime.isAfter(endDate) ? lastDateTime : endDate;
+      }
+
+      counter++;
+    });
+
+    return indices;
+  }
+
   bool get isRunning {
     final taskTimes = getTaskTimes();
 

lib/ui/task/edit/task_edit_desktop.dart

@@ -123,10 +123,12 @@ class _TaskEditDesktopState extends State<TaskEditDesktop> {
     final client = state.clientState.get(task.clientId);
     final showEndDate = company.showTaskEndDate;
     final taskTimes = task.getTaskTimes(sort: false);
+
     if (!taskTimes.any((taskTime) => taskTime.isEmpty)) {
       taskTimes.add(TaskTime().rebuild((b) => b..startDate = null));
     }
 
+    final overlapping = task.getInvalidTimeIndices;
     final rateLabel = localization.rate +
         ' • ' +
         formatNumber(
@@ -413,8 +415,13 @@ class _TaskEditDesktopState extends State<TaskEditDesktop> {
                   Padding(
                     padding: const EdgeInsets.only(top: 4),
                     child: IconButton(
-                      icon: Icon(Icons.clear),
-                      tooltip: localization.remove,
+                      icon: Icon(
+                        Icons.clear,
+                        color: overlapping.contains(index) ? Colors.red : null,
+                      ),
+                      tooltip: overlapping.contains(index)
+                          ? localization.invalidTime
+                          : localization.remove,
                       onPressed: taskTimes[index].isEmpty
                           ? null
                           : () {

lib/ui/task/edit/task_edit_times.dart

@@ -52,6 +52,7 @@ class _TaskEditTimesState extends State<TaskEditTimes> {
     final viewModel = widget.viewModel;
     final task = viewModel.task;
     final taskTimes = task.getTaskTimes();
+    final invalidTimes = task.getInvalidTimeIndices;
     final taskTime = viewModel.taskTimeIndex != null &&
             taskTimes.length > viewModel.taskTimeIndex
         ? taskTimes[viewModel.taskTimeIndex]
@@ -68,15 +69,18 @@ class _TaskEditTimesState extends State<TaskEditTimes> {
       return HelpText(localization.clickPlusToAddTime);
     }
 
-    final taskTimeWidgets = task
-        .getTaskTimes()
-        .toList()
-        .reversed
-        .map<Widget>((taskTime) => TaskTimeListTile(
+    final sortedTaskTimes = task.getTaskTimes().toList().reversed.toList();
+    final taskTimeWidgets = <Widget>[];
+
+    for (var i = 0; i < sortedTaskTimes.length; i++) {
+      final taskTime = sortedTaskTimes[i];
+      taskTimeWidgets.add(TaskTimeListTile(
         task: task,
         taskTime: taskTime,
         onTap: (context) => _showTaskTimeEditor(taskTime, context),
+        isValid: !invalidTimes.contains(sortedTaskTimes.length - i - 1),
       ));
+    }
 
     return ScrollableListView(
       children: taskTimeWidgets.toList(),

lib/ui/task/task_time_view.dart

@@ -18,11 +18,13 @@ class TaskTimeListTile extends StatelessWidget {
     @required this.task,
     @required this.taskTime,
     @required this.onTap,
+    @required this.isValid,
   });
 
   final Function(BuildContext context) onTap;
   final TaskEntity task;
   final TaskTime taskTime;
+  final bool isValid;
 
   @override
   Widget build(BuildContext context) {
@@ -51,7 +53,9 @@ class TaskTimeListTile extends StatelessWidget {
             ],
           ),
           subtitle: Text(subtitle),
-          trailing: onTap != null ? Icon(Icons.navigate_next) : null,
+          trailing: onTap != null
+              ? Icon(isValid ? Icons.navigate_next : Icons.error)
+              : null,
         ),
         Divider(
           height: 1.0,

lib/ui/task/view/task_view_overview.dart

@@ -200,6 +200,7 @@ class _TaskOverviewState extends State<TaskOverview> {
             TaskTimeListTile(
               task: task,
               taskTime: taskTime,
+              isValid: true,
               onTap: (BuildContext context) =>
                   viewModel.state.userCompany.canEditEntity(task)
                       ? viewModel.onEditPressed(context, taskTime)

lib/utils/i18n.dart

@@ -16,6 +16,7 @@ mixin LocalizationsProvider on LocaleCodeAware {
   static final Map<String, Map<String, String>> _localizedValues = {
     'en': {
       // STARTER: lang key - do not remove comment
+      'invalid_time': 'Invalid Time',
       'client_shipping_state': 'Client Shipping State',
       'client_shipping_city': 'Client Shipping City',
       'client_shipping_postal_code': 'Client Shipping Postal Code',
@@ -74125,6 +74126,10 @@ mixin LocalizationsProvider on LocaleCodeAware {
       _localizedValues[localeCode]['client_shipping_country'] ??
       _localizedValues['en']['client_shipping_country'];
 
+  String get invalidTime =>
+      _localizedValues[localeCode]['invalid_time'] ??
+      _localizedValues['en']['invalid_time'];
+
   // STARTER: lang field - do not remove comment
 
   String lookup(String key) {