using System;

using System.Diagnostics.CodeAnalysis;

using System.Reflection;

using Npgsql.Internal.TypeHandling;

using NpgsqlTypes;

namespace Npgsql.TypeMapping;

abstract class TypeMapperBase : INpgsqlTypeMapper

{

public INpgsqlNameTranslator DefaultNameTranslator { get; }

protected TypeMapperBase(INpgsqlNameTranslator defaultNameTranslator)

{

if (defaultNameTranslator == null)

throw new ArgumentNullException(nameof(defaultNameTranslator));

DefaultNameTranslator = defaultNameTranslator;

}

#region Mapping management

/// <inheritdoc />

public abstract INpgsqlTypeMapper MapEnum<TEnum>(string? pgName = null, INpgsqlNameTranslator? nameTranslator = null)

where TEnum : struct, Enum;

/// <inheritdoc />

public abstract bool UnmapEnum<TEnum>(string? pgName = null, INpgsqlNameTranslator? nameTranslator = null)

where TEnum : struct, Enum;

/// <inheritdoc />

[RequiresUnreferencedCode("Composite type mapping currently isn't trimming-safe.")]

public abstract INpgsqlTypeMapper MapComposite<T>(string? pgName = null, INpgsqlNameTranslator? nameTranslator = null);

/// <inheritdoc />

[RequiresUnreferencedCode("Composite type mapping currently isn't trimming-safe.")]

public abstract INpgsqlTypeMapper MapComposite(Type clrType, string? pgName = null, INpgsqlNameTranslator? nameTranslator = null);

/// <inheritdoc />

public abstract bool UnmapComposite<T>(string? pgName = null, INpgsqlNameTranslator? nameTranslator = null);

/// <inheritdoc />

public abstract bool UnmapComposite(Type clrType, string? pgName = null, INpgsqlNameTranslator? nameTranslator = null);

/// <inheritdoc />

public abstract void AddTypeResolverFactory(TypeHandlerResolverFactory resolverFactory);

public abstract void Reset();

#endregion Composite mapping

#region Misc

private protected static string GetPgName(Type clrType, INpgsqlNameTranslator nameTranslator)

=> clrType.GetCustomAttribute<PgNameAttribute>()?.PgName

?? nameTranslator.TranslateTypeName(clrType.Name);

#endregion Misc

}