Changing datamodel to look similar to PowerSync App schema.

Author: Chriztiaan

demos/TodoSQLite/Data/TodoItemDatabase.cs

@@ -46,27 +46,30 @@ public async Task<int> SaveListAsync(TodoList list)
     public async Task<int> DeleteListAsync(TodoList list)
     {
         await Init();
+        string listId = list.ID.ToString();
         // First delete all todo items in this list
-        await database.Table<TodoItem>().Where(t => t.ListId == list.ID).DeleteAsync();
+        await database.Table<TodoItem>().Where(t => t.ListId == listId).DeleteAsync();
         return await database.DeleteAsync(list);
     }
 
     // Todo item operations
     public async Task<List<TodoItem>> GetItemsAsync(int listId)
     {
         await Init();
+        string listIdStr = listId.ToString();
         return await database.Table<TodoItem>()
-            .Where(t => t.ListId == listId)
-            .OrderByDescending(t => t.ID)
+            .Where(t => t.ListId == listIdStr)
+            .OrderByDescending(t => t.CreatedAt)
             .ToListAsync();
     }
 
     public async Task<List<TodoItem>> GetItemsNotDoneAsync(int listId)
     {
         await Init();
+        string listIdStr = listId.ToString();
         return await database.Table<TodoItem>()
-            .Where(t => t.ListId == listId && !t.Done)
-            .OrderByDescending(t => t.ID)
+            .Where(t => t.ListId == listIdStr && !t.Completed)
+            .OrderByDescending(t => t.CreatedAt)
             .ToListAsync();
     }
 

demos/TodoSQLite/Models/TodoItem.cs

@@ -6,7 +6,11 @@ public class TodoItem
 {
     [PrimaryKey, AutoIncrement]
     public int ID { get; set; }
-    public string Name { get; set; }
-    public bool Done { get; set; }
-    public int ListId { get; set; }
+    public string ListId { get; set; }
+    public string CreatedAt { get; set; } = DateTime.UtcNow.ToString("o");
+    public string CompletedAt { get; set; }
+    public string Description { get; set; }
+    public string CreatedBy { get; set; }
+    public string CompletedBy { get; set; }
+    public bool Completed { get; set; }
 }

demos/TodoSQLite/Models/TodoList.cs

@@ -6,6 +6,7 @@ public class TodoList
 {
     [PrimaryKey, AutoIncrement]
     public int ID { get; set; }
+    public string CreatedAt { get; set; } = DateTime.UtcNow.ToString("o");
     public string Name { get; set; }
-    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+    public string OwnerId { get; set; }
 } 

demos/TodoSQLite/Views/TodoListPage.xaml

@@ -20,13 +20,13 @@
                                Padding="10"
                                CornerRadius="5">
                             <Grid ColumnDefinitions="*,Auto">
-                                <Label Text="{Binding Name}"
+                                <Label Text="{Binding Description}"
                                        FontSize="16"
                                        VerticalOptions="Center"/>
                                 <HorizontalStackLayout Grid.Column="1" 
                                                      Spacing="10"
                                                      VerticalOptions="Center">
-                                    <CheckBox IsChecked="{Binding Done}"
+                                    <CheckBox IsChecked="{Binding Completed}"
                                              CheckedChanged="OnCheckBoxChanged"
                                              VerticalOptions="Center"/>
                                     <Button Text="Delete"

demos/TodoSQLite/Views/TodoListPage.xaml.cs

@@ -27,13 +27,14 @@ protected override async void OnAppearing()
 
     private async void OnAddClicked(object sender, EventArgs e)
     {
-        string name = await DisplayPromptAsync("New Todo", "Enter todo name:");
-        if (!string.IsNullOrWhiteSpace(name))
+        string description = await DisplayPromptAsync("New Todo", "Enter todo description:");
+        if (!string.IsNullOrWhiteSpace(description))
         {
             var todo = new TodoItem 
             { 
-                Name = name,
-                ListId = _list.ID
+                Description = description,
+                ListId = _list.ID.ToString(),
+                CreatedBy = "user" // TODO: Replace with actual user ID
             };
             await _database.SaveItemAsync(todo);
             TodoItemsCollection.ItemsSource = await _database.GetItemsAsync(_list.ID);
@@ -46,7 +47,7 @@ private async void OnDeleteClicked(object sender, EventArgs e)
         var todo = (TodoItem)button.CommandParameter;
 
         bool confirm = await DisplayAlert("Confirm Delete", 
-            $"Are you sure you want to delete '{todo.Name}'?", 
+            $"Are you sure you want to delete '{todo.Description}'?", 
             "Yes", "No");
 
         if (confirm)
@@ -61,7 +62,9 @@ private async void OnCheckBoxChanged(object sender, CheckedChangedEventArgs e)
         if (sender is CheckBox checkBox && 
             checkBox.Parent?.Parent?.BindingContext is TodoItem todo)
         {
-            todo.Done = e.Value;
+            todo.Completed = e.Value;
+            todo.CompletedAt = e.Value ? DateTime.UtcNow.ToString("o") : null;
+            todo.CompletedBy = e.Value ? "user" : null; // TODO: Replace with actual user ID
             await _database.SaveItemAsync(todo);
         }
     }
@@ -70,13 +73,13 @@ private async void OnItemSelected(object sender, SelectionChangedEventArgs e)
     {
         if (e.CurrentSelection.FirstOrDefault() is TodoItem selectedItem)
         {
-            string newName = await DisplayPromptAsync("Edit Todo", 
-                "Enter new name:", 
-                initialValue: selectedItem.Name);
+            string newDescription = await DisplayPromptAsync("Edit Todo", 
+                "Enter new description:", 
+                initialValue: selectedItem.Description);
 
-            if (!string.IsNullOrWhiteSpace(newName))
+            if (!string.IsNullOrWhiteSpace(newDescription))
             {
-                selectedItem.Name = newName;
+                selectedItem.Description = newDescription;
                 await _database.SaveItemAsync(selectedItem);
                 TodoItemsCollection.ItemsSource = await _database.GetItemsAsync(_list.ID);
             }