// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using Microsoft.AspNetCore.Mvc.Filters;
using Microsoft.AspNetCore.Mvc.ViewFeatures.Filters;
using Microsoft.AspNetCore.Mvc.ViewFeatures.Infrastructure;
 
namespace Microsoft.AspNetCore.Mvc.ApplicationModels;
 
internal sealed class TempDataFilterPageApplicationModelProvider : IPageApplicationModelProvider
{
    private readonly TempDataSerializer _tempDataSerializer;
 
    public TempDataFilterPageApplicationModelProvider(TempDataSerializer tempDataSerializer)
    {
        _tempDataSerializer = tempDataSerializer;
    }
 
    // The order is set to execute after the DefaultPageApplicationModelProvider.
    public int Order => -1000 + 10;
 
    public void OnProvidersExecuted(PageApplicationModelProviderContext context)
    {
    }
 
    public void OnProvidersExecuting(PageApplicationModelProviderContext context)
    {
        ArgumentNullException.ThrowIfNull(context);
 
        var pageApplicationModel = context.PageApplicationModel;
        var handlerType = pageApplicationModel.HandlerType.AsType();
 
        var tempDataProperties = SaveTempDataPropertyFilterBase.GetTempDataProperties(_tempDataSerializer, handlerType);
        if (tempDataProperties == null)
        {
            return;
        }
 
        var filter = new PageSaveTempDataPropertyFilterFactory(tempDataProperties);
        pageApplicationModel.Filters.Add(filter);
    }
}