using DigitalData.MessagingService.Application.EmailSending.Commands;
using MediatR;
using Microsoft.AspNetCore.Mvc;

namespace DigitalData.MessagingService.API.Controllers;

/// <summary>
/// Email sending API controller
/// Enqueues outgoing emails to RabbitMQ for async processing
/// </summary>
[ApiController]
[Route("api/[controller]")]
public class EmailsController(IMediator mediator) : ControllerBase
{
    /// <summary>
    /// Send email (enqueue to RabbitMQ for background processing)
    /// </summary>
    /// <param name="command">Send email command</param>
    /// <param name="cancellationToken">Cancellation token</param>
    /// <returns>HTTP 202 Accepted (queued for processing)</returns>
    [HttpPost("send")]
    [ProducesResponseType(StatusCodes.Status202Accepted)]
    [ProducesResponseType(StatusCodes.Status400BadRequest)]
    public async Task<IActionResult> SendEmail([FromBody] SendEmailCommand command, CancellationToken cancellationToken)
    {
        var outgoingEmailEvent = await mediator.Send(command, cancellationToken);

        return Accepted(new
        {
            CommandId = outgoingEmailEvent.Id,
            To = outgoingEmailEvent.Recipient,
            outgoingEmailEvent.Subject,
            outgoingEmailEvent.QueuedAt
        });
    }
}