using System.Collections.Immutable;
using System.Reflection;
using Femto.Common.Attributes;
using MediatR;

namespace Femto.Modules.Blog.Contracts;

public static class Module
{
    public static IDictionary<string, Type> GetIntegrationEventTypes()
    {
        var mapping = new Dictionary<string, Type>();
        
        var types = typeof(Module).Assembly.GetTypes();

        foreach (var type in types)
        {
            if (!typeof(INotification).IsAssignableFrom(type) || type.IsAbstract || type.IsInterface)
                continue;

            var attribute = type.GetCustomAttribute<EventTypeAttribute>();
            if (attribute == null)
                continue;

            var eventName = attribute.Name;
            if (!string.IsNullOrWhiteSpace(eventName))
            {
                mapping.TryAdd(eventName, type);
            }
        }

        return mapping;
    }
}