using System.Threading.Tasks;
using HN.Application;
using MediatR;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;

namespace Api.Controllers
{
  [ApiController]
  [Route("api/[controller]")]
  public sealed class LinksController : ControllerBase
  {
    private readonly IMediator _bus;

    public LinksController(IMediator bus)
    {
      _bus = bus;
    }

    /// <summary>
    /// Retrieve all links already posted.
    /// </summary>
    /// <returns></returns>
    [ProducesResponseType(typeof(LinkDto[]), StatusCodes.Status200OK)]
    [ProducesResponseType(StatusCodes.Status400BadRequest)]
    public async Task<IActionResult> GetLinks()
    {
      return Ok(await _bus.Send(new ListLinksQuery()));
    }

    /// <summary>
    /// Post a new link.
    /// </summary>
    /// <param name="command"></param>
    /// <returns></returns>
    [HttpPost]
    public async Task<IActionResult> CreateLink(AddLinkCommand command)
    {
      var result = await _bus.Send(command);

      return Created("blabla", result);
    }
  }
}