using System.Reflection;

namespace EC.Util.Common;

public class ReflectUtil
{
    private static readonly BindingFlags bindingAttr = BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic;

    public static bool ContainProperty(object instance, string propertyName)
    {
        if (instance == null || string.IsNullOrEmpty(propertyName)) return false;
        PropertyInfo? property = instance.GetType()?.GetProperty(propertyName, bindingAttr);
        return property != null;
    }

    public static T? GetProperty<T>(object instance, string propertyName)
    {
        if (instance == null || string.IsNullOrEmpty(propertyName)) return default;
        PropertyInfo? property = instance.GetType()?.GetProperty(propertyName, bindingAttr);
        try
        {
            return (T?)property?.GetValue(instance, null);
        }
        catch (Exception)
        {
            return default;
        }
    }

    public static bool GetProperty<T>(object instance, string propertyName, out T? val)
    {
        val = GetProperty<T>(instance, propertyName);
        return val != null;
    }

    public static bool ContainField(object instance, string propertyName)
    {
        if (instance == null || string.IsNullOrEmpty(propertyName)) return false;
        FieldInfo? field = instance.GetType()?.GetField(propertyName, bindingAttr);
        return field != null;
    }

    public static T? GetField<T>(object instance, string propertyName)
    {
        if (instance == null || string.IsNullOrEmpty(propertyName)) return default;
        FieldInfo? field = instance.GetType()?.GetField(propertyName, bindingAttr);
        try
        {
            return (T?)field?.GetValue(instance);
        }
        catch (Exception)
        {
            return default;
        }
    }

    public static bool GetField<T>(object instance, string propertyName, out T? val)
    {
        val = GetField<T>(instance, propertyName);
        return val != null;
    }

    public static void SetField<T>(object instance, string propertyName, T? val)
    {
        if (instance == null || string.IsNullOrEmpty(propertyName)) return;
        FieldInfo? field = instance.GetType()?.GetField(propertyName, bindingAttr);
        try
        {
            field?.SetValue(instance, val);
        }
        catch (Exception)
        {
        }
    }

    public static MethodInfo? GetMethod(object instance, string name)
    {
        MethodInfo? method = instance.GetType().GetMethod(name);
        return method;
    }

    public static T? RunMethod<T>(object instance, string name, object?[]? parameters)
    {
        try
        {
            MethodInfo? method = instance.GetType().GetMethod(name);
            return (T?)method?.Invoke(instance, parameters);
        }
        catch (Exception)
        {
            return default;
        }
    }
}