using System.Text;
using ExpenseTracker.Application.Common.Interfaces.Services;
using MailKit.Net.Smtp;
using MailKit.Security;
using Microsoft.Extensions.Configuration;
using MimeKit;

namespace ExpenseTracker.Infrastructure.Email;

public class EmailSenderService : IEmailSenderService
{
    private readonly IConfiguration _configuration;

    public EmailSenderService(IConfiguration configuration)
    {
        _configuration = configuration;
    }

    public async Task SendAsync(
        ICollection<string> recipientAddresses,
        string subject,
        string message,
        CancellationToken cancellationToken)
    {
        var smtpClientHost = _configuration.GetSection("Email").GetValue<string>("Host");
        var smtpClientPort = _configuration.GetSection("Email").GetValue<int>("Port"); 

        var smtpClientUsername = _configuration.GetSection("Email").GetValue<string>("Username");
        var smtpClientPassword = _configuration.GetSection("Email").GetValue<string>("Password");

        var fromAddres = _configuration.GetSection("Email").GetValue<string>("SenderAddress");;
        var fromName = _configuration.GetSection("Email").GetValue<string>("SenderName");;

        var subj = subject;
        var body = message;


        var msg = new MimeMessage();

        msg.From.Add(new MailboxAddress(fromName, fromAddres));

        foreach (var address in recipientAddresses)
        {
            msg.To.Add(new MailboxAddress("", address));
        }

        msg.Subject = subj;

        msg.Body = new TextPart("plain")
        {
            Text = body
        };


        using (var client = new SmtpClient())
        {
            await client.ConnectAsync(smtpClientHost, smtpClientPort, SecureSocketOptions.SslOnConnect, cancellationToken);
            await client.AuthenticateAsync(smtpClientUsername, smtpClientPassword, cancellationToken);
            await client.SendAsync(msg, cancellationToken);
            await client.DisconnectAsync(true, cancellationToken);
        }
    }
}