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

using System;
using System.Collections.ObjectModel;
using System.Diagnostics.CodeAnalysis;
using System.Reflection;
using System.Runtime.Serialization.DataContracts;

namespace System.Runtime.Serialization
{
    internal static class DataContractSurrogateCaller
    {
        [RequiresDynamicCode(DataContract.SerializerAOTWarning)]
        [RequiresUnreferencedCode(DataContract.SerializerTrimmerWarning)]
        internal static Type GetDataContractType(ISerializationSurrogateProvider surrogateProvider, Type type)
        {
            if (DataContract.GetBuiltInDataContract(type) != null)
                return type;
            return surrogateProvider.GetSurrogateType(type) ?? type;
        }

        [return: NotNullIfNotNull(nameof(obj))]
        [RequiresDynamicCode(DataContract.SerializerAOTWarning)]
        [RequiresUnreferencedCode(DataContract.SerializerTrimmerWarning)]
        internal static object? GetObjectToSerialize(ISerializationSurrogateProvider surrogateProvider, object? obj, Type objType, Type membertype)
        {
            if (obj == null)
                return null;
            if (DataContract.GetBuiltInDataContract(objType) != null)
                return obj;
            return surrogateProvider.GetObjectToSerialize(obj, membertype);
        }

        [return: NotNullIfNotNull(nameof(obj))]
        [RequiresDynamicCode(DataContract.SerializerAOTWarning)]
        [RequiresUnreferencedCode(DataContract.SerializerTrimmerWarning)]
        internal static object? GetDeserializedObject(ISerializationSurrogateProvider surrogateProvider, object? obj, Type objType, Type memberType)
        {
            if (obj == null)
                return null;
            if (DataContract.GetBuiltInDataContract(objType) != null)
                return obj;
            return surrogateProvider.GetDeserializedObject(obj, memberType);
        }

        internal static object? GetCustomDataToExport(ISerializationSurrogateProvider2 surrogateProvider, MemberInfo memberInfo, Type dataContractType)
        {
            return surrogateProvider.GetCustomDataToExport(memberInfo, dataContractType);
        }

        [RequiresDynamicCode(DataContract.SerializerAOTWarning)]
        [RequiresUnreferencedCode(DataContract.SerializerTrimmerWarning)]
        internal static object? GetCustomDataToExport(ISerializationSurrogateProvider2 surrogateProvider, Type clrType, Type dataContractType)
        {
            if (DataContract.GetBuiltInDataContract(clrType) != null)
                return null;
            return surrogateProvider.GetCustomDataToExport(clrType, dataContractType);
        }

        internal static void GetKnownCustomDataTypes(ISerializationSurrogateProvider2 surrogateProvider, Collection<Type> customDataTypes)
        {
            surrogateProvider.GetKnownCustomDataTypes(customDataTypes);
        }

        [RequiresDynamicCode(DataContract.SerializerAOTWarning)]
        [RequiresUnreferencedCode(DataContract.SerializerTrimmerWarning)]
        internal static Type? GetReferencedTypeOnImport(ISerializationSurrogateProvider2 surrogateProvider, string typeName, string typeNamespace, object? customData)
        {
            if (DataContract.GetBuiltInDataContract(typeName, typeNamespace) != null)
                return null;
            return surrogateProvider.GetReferencedTypeOnImport(typeName, typeNamespace, customData);
        }
    }
}