// Based on Windows UI Library
// Copyright(c) Microsoft Corporation.All rights reserved.

// ReSharper disable once CheckNamespace
namespace WPFluent.Controls;

internal class NavigationCache
{
    private readonly Dictionary<Type, object?> _entires = [];

    public object? Remember(Type? entryType, NavigationCacheMode cacheMode, Func<object?> generate)
    {
        if(entryType == null)
        {
            return null;
        }

        if(cacheMode == NavigationCacheMode.Disabled)
        {
            System.Diagnostics.Debug
                .WriteLine($"Cache for {entryType} is disabled. Generating instance using action...");

            return generate.Invoke();
        }

        if(!_entires.TryGetValue(entryType, out var value))
        {
            System.Diagnostics.Debug.WriteLine($"{entryType} not found in cache, generating instance using action...");

            value = generate.Invoke();

            _entires.Add(entryType, value);
        }

        System.Diagnostics.Debug.WriteLine($"{entryType} found in cache.");

        return value;
    }
}