using System.Net.Mail;
using System.Reflection;
using NejCommon.Emails;

namespace NejCommon.Services.Email;

public interface IEmailService
{
    Task SendEmailAsync(string recipient, string subject, string message, List<Attachment>? attachments = null);

    async Task SendDocumentAsync<T, T2>(string recipient, T2 data, List<Attachment>? attachments = null) where T : EmailBase<T, T2>
    {
        var func = typeof(T).GetMethod("GetHTML", BindingFlags.Static | BindingFlags.FlattenHierarchy | BindingFlags.Public);
        var obj = Activator.CreateInstance<T>();
        obj.Data = data;
        var subject = obj.GetSubject();
        var atts = obj.GetAttachments();

        //invoke the GetHTML function asynchronously and wait for the result
        var html = await (Task<string>)func.Invoke(null, new object[] { data });

        await SendEmailAsync(recipient, subject, html, attachments == null ? atts : atts.Concat(attachments).ToList());
    }
}