// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

using System.Collections.Generic;
using System.Diagnostics;
using System.Diagnostics.CodeAnalysis;
using System.Text.Json.Serialization.Metadata;

namespace System.Text.Json.Serialization.Converters;

internal sealed class ImmutableSortedDictionaryOfTKeyTValueConverter<TDictionary, TKey, TValue>
    : DictionaryDefaultConverter<TDictionary, TKey, TValue>
    where TDictionary : IReadOnlyDictionary<TKey, TValue>
    where TKey : notnull
{
    protected override void Add(TKey key, in TValue value, JsonSerializerOptions options, ref ReadStack state)
    {
        SortedDictionary<TKey, TValue> dictionary = (SortedDictionary<TKey, TValue>)state.Current.ReturnValue!;

        if (options.AllowDuplicateProperties)
        {
            dictionary[key] = value;
        }
        else
        {
            if (!dictionary.TryAdd(key, value))
            {
                ThrowHelper.ThrowJsonException_DuplicatePropertyNotAllowed();
            }
        }
    }

    internal override bool CanHaveMetadata => false;

    internal override bool SupportsCreateObjectDelegate => false;
    protected override void CreateCollection(ref Utf8JsonReader reader, scoped ref ReadStack state)
    {
        state.Current.ReturnValue = new SortedDictionary<TKey, TValue>();
    }

    internal override bool IsConvertibleCollection => true;
    protected override void ConvertCollection(ref ReadStack state, JsonSerializerOptions options)
    {
        Func<IEnumerable<KeyValuePair<TKey, TValue>>, TDictionary>? creator =
            (Func<IEnumerable<KeyValuePair<TKey, TValue>>, TDictionary>?)state.Current.JsonTypeInfo.CreateObjectWithArgs;
        Debug.Assert(creator is not null);
        state.Current.ReturnValue = creator((SortedDictionary<TKey, TValue>)state.Current.ReturnValue!);
    }

    [RequiresUnreferencedCode(IEnumerableConverterFactoryHelpers.ImmutableConvertersUnreferencedCodeMessage)]
    [RequiresDynamicCode(IEnumerableConverterFactoryHelpers.ImmutableConvertersUnreferencedCodeMessage)]
    internal override void ConfigureJsonTypeInfoUsingReflection(JsonTypeInfo jsonTypeInfo, JsonSerializerOptions options)
    {
        jsonTypeInfo.CreateObjectWithArgs = DefaultJsonTypeInfoResolver.MemberAccessor.CreateImmutableDictionaryCreateRangeDelegate<TDictionary, TKey, TValue>();
    }
}