namespace App.UI.Models;

using Adw;
using System.Collections.ObjectModel;
using System.Collections.Specialized;

public class PasswordStoreShortcutCollection : ObservableCollection<PasswordStoreShortcut>  
{  
    private readonly PreferencesGroup shortcutsGroup;  
    private readonly Dictionary<PasswordStoreShortcut, ActionRow> itemToRowMap = new();  
  
    public PasswordStoreShortcutCollection(PreferencesGroup shortcutsGroup)  
    {  
        this.shortcutsGroup = shortcutsGroup;  
        CollectionChanged += OnCollectionChanged;  
    }  
  
    private void OnCollectionChanged(object? sender, NotifyCollectionChangedEventArgs e)  
    {  
        switch (e.Action)  
        {  
            case NotifyCollectionChangedAction.Add:  
                foreach (PasswordStoreShortcut item in e.NewItems)  
                {  
                    var row = CreateShortcutRow(item);  
                    itemToRowMap[item] = row;  
                    shortcutsGroup.Add(row);  
                      
                    // Subscribe to property changes for reactive updates  
                    item.PropertyChanged += (sender, args) => UpdateRowFromItem(item, ref row);  
                }  
                break;  
  
            case NotifyCollectionChangedAction.Remove:  
                foreach (PasswordStoreShortcut item in e.OldItems)  
                {  
                    if (itemToRowMap.TryGetValue(item, out var row))  
                    {  
                        shortcutsGroup.Remove(row);  
                        itemToRowMap.Remove(item);  
                    }  
                }  
                break;  
  
            case NotifyCollectionChangedAction.Reset:  
                foreach (var row in itemToRowMap.Values)  
                {  
                    shortcutsGroup.Remove(row);  
                }  
                itemToRowMap.Clear();  
                break;  
        }  
    }  
  
    private ActionRow CreateShortcutRow(PasswordStoreShortcut shortcut)  
    {  
        var row = new ActionRow();  
        UpdateRowFromItem(shortcut, ref row);  
          
        row.SetActivatable(true);  
        row.OnActivated += (sender, args) => {  
            Console.WriteLine($"[DEBUG] Opening: {shortcut.Path}");  
        };  
          
        return row;  
    }  
  
    private void UpdateRowFromItem(PasswordStoreShortcut shortcut, ref ActionRow row)  
    {  
        row.SetTitle(shortcut.DisplayName);  
        row.SetSubtitle(shortcut.Path);  

        //Update icon
        var existingIcon = row.GetFirstChild() as Gtk.Image;  
        if (existingIcon == null)  
        {  
            var icon = new Gtk.Image();  
            icon.SetFromIconName(shortcut.IconName);  
            row.AddPrefix(icon);  
        }  
        else  
        {  
            existingIcon.SetFromIconName(shortcut.IconName);  
        }  
    }  
}