using System;

namespace ShrinkEventBus
{
    public enum ShrinkSubscriberLifetime
    {
        Manual = 0,
        AwakeToDestroy = 1
    }

    [AttributeUsage(AttributeTargets.Class, Inherited = false, AllowMultiple = false)]
    public sealed class ShrinkEventSubscriberAttribute : Attribute
    {
        public string OwnerId { get; set; } = string.Empty;
        public string DefaultBus { get; set; } = string.Empty;
        public ShrinkSubscriberLifetime Lifetime { get; set; } = ShrinkSubscriberLifetime.Manual;
    }

    [AttributeUsage(AttributeTargets.Method, Inherited = false, AllowMultiple = false)]
    public sealed class ShrinkSubscribeAttribute : Attribute
    {
        public string Bus { get; set; } = string.Empty;
        public ShrinkEventPriority Priority { get; set; } = ShrinkEventPriority.Normal;
        public int NumericPriority { get; set; }
        public bool ReceiveCanceled { get; set; }

        public ShrinkSubscribeAttribute() { }

        public ShrinkSubscribeAttribute(ShrinkEventPriority priority, bool receiveCanceled = false)
        {
            Priority = priority;
            ReceiveCanceled = receiveCanceled;
        }

        public ShrinkSubscribeAttribute(int priority)
        {
            NumericPriority = priority;
            Priority = priority switch
            {
                >= 100 => ShrinkEventPriority.Highest,
                >= 50 => ShrinkEventPriority.High,
                >= 0 => ShrinkEventPriority.Normal,
                >= -50 => ShrinkEventPriority.Low,
                _ => ShrinkEventPriority.Lowest
            };
        }
    }

    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Struct, Inherited = false)]
    public sealed class ShrinkEventAttribute : Attribute
    {
        public ShrinkDispatchMode Dispatch { get; set; } = ShrinkDispatchMode.Ordered;
    }
}