using HN.Application;
using Website.Models;
using Microsoft.AspNetCore.Mvc;
using MediatR;
using System.Threading.Tasks;
using HN.Domain;
using System;

namespace Website.Controllers
{
  public sealed class CommentsController : BaseController
  {
    private readonly IMediator _bus;

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

    [ValidateAntiForgeryToken]
    [HttpPost]
    public async Task<IActionResult> Create(CommentLinkCommand command)
    {
      if (!ModelState.IsValid)
      {
        var link = await _bus.Send(new GetLinkQuery(command.LinkId));
        var comments = await _bus.Send(new GetLinkCommentsQuery(command.LinkId));
        return View("../Links/Show", new ShowLinkViewModel(link, command, comments));
      }

      await _bus.Send(command);

      SetFlash("Comment added!");

      return RedirectToAction(nameof(LinksController.Show), "Links", new { id = command.LinkId });
    }

    [HttpPost("{controller}/{id:guid}/vote")]
    [ValidateAntiForgeryToken]
    public async Task<IActionResult> Vote(Guid id, VoteType type, string redirectTo)
    {
      await _bus.Send(new VoteForCommentCommand(id, type));

      SetFlash($"Comment {type} added!");

      return Redirect(redirectTo);
    }
  }
}