using RobotNet.VDA5050.Type;
using System.Reflection;
using System.Text.Json.Serialization;

namespace RobotNet.VDA5050;

public static class EnumHelper
{
    public static string ToJsonString(this VDA5050Topic enumValue)
    {
        var type = enumValue.GetType();
        var memberInfo = type.GetMember(enumValue.ToString()).FirstOrDefault();

        if (memberInfo == null) return enumValue.ToString();

        var attribute = memberInfo.GetCustomAttribute<JsonStringEnumMemberNameAttribute>();
        return attribute?.Name ?? enumValue.ToString();
    }

    public static string ToJsonString(this Enum enumValue)
    {
        var type = enumValue.GetType();
        var memberInfo = type.GetMember(enumValue.ToString()).FirstOrDefault();

        if (memberInfo == null) return enumValue.ToString();

        var attribute = memberInfo.GetCustomAttribute<JsonStringEnumMemberNameAttribute>();
        return attribute?.Name ?? enumValue.ToString();
    }

    private static readonly Dictionary<string, ActionType> Cache = BuildCache();

    private static Dictionary<string, ActionType> BuildCache()
    {
        var result = new Dictionary<string, ActionType>();

        foreach (ActionType value in Enum.GetValues<ActionType>())
        {
            var field = typeof(ActionType).GetField(value.ToString());
            var attribute = field?.GetCustomAttribute<JsonStringEnumMemberNameAttribute>();

            if (attribute != null)
            {
                result[attribute.Name] = value;
            }

            // Cũng thêm tên enum gốc để hỗ trợ cả hai
            result[value.ToString()] = value;
        }

        return result;
    }

    public static bool TryParse(string value, out ActionType result)
    {
        return Cache.TryGetValue(value, out result);
    }
}