// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
#nullable enable
 
using System.Globalization;
using Microsoft.Extensions.Primitives;
 
namespace Microsoft.AspNetCore.Mvc.ModelBinding;
 
/// <summary>
/// An <see cref="IValueProvider"/> for jQuery formatted form data.
/// </summary>
public class JQueryFormValueProvider : JQueryValueProvider
{
    private readonly HashSet<string?>? _invariantValueKeys;
 
    /// <summary>
    /// Initializes a new instance of the <see cref="JQueryFormValueProvider"/> class.
    /// </summary>
    /// <param name="bindingSource">The <see cref="BindingSource"/> of the data.</param>
    /// <param name="values">The values.</param>
    /// <param name="culture">The culture to return with ValueProviderResult instances.</param>
    public JQueryFormValueProvider(
        BindingSource bindingSource,
        IDictionary<string, StringValues> values,
        CultureInfo? culture)
        : base(bindingSource, values, culture)
    {
        if (values.TryGetValue(FormValueHelper.CultureInvariantFieldName, out var invariantKeys) && invariantKeys.Count > 0)
        {
            _invariantValueKeys = new(invariantKeys, StringComparer.OrdinalIgnoreCase);
        }
    }
 
    /// <inheritdoc/>
    public override ValueProviderResult GetValue(string key)
    {
        var result = base.GetValue(key);
 
        if (result.Length > 0 && _invariantValueKeys?.Contains(key) == true)
        {
            return new(result.Values, CultureInfo.InvariantCulture);
        }
 
        return result;
    }
}