using System.ComponentModel.DataAnnotations;
using HackerNet.Application;
using HackerNet.Infrastructure.AspNet.Filters;
using Microsoft.AspNetCore.Mvc;

namespace HackerNet.Api.Controllers;

[ApiController]
[Route("/api/links")]
public class LinksController : ControllerBase
{
  private readonly LinkService _linkService;

  public LinksController(LinkService linkService)
  {
    _linkService = linkService;
  }

  /// <summary>
  /// Retourne les derniers liens publiés de la plateforme.
  /// </summary>
  /// <returns></returns>
  [HttpGet]
  public ActionResult<LinkHomePage[]> GetLinks()
  {
    return _linkService.GetPublishedLinks();
  }

  /// <summary>
  /// Récupère un lien par son identifiant.
  /// </summary>
  /// <param name="id"></param>
  /// <returns></returns>
  [HttpGet("{id:guid}")] // https://docs.microsoft.com/fr-fr/aspnet/core/fundamentals/routing?view=aspnetcore-6.0#route-constraint-reference
  [CustomExceptionFilter]
  [ProducesResponseType(StatusCodes.Status404NotFound)]
  [ProducesResponseType(StatusCodes.Status200OK)]
  public ActionResult<LinkHomePage> GetLinkDetail(Guid id)
  {
    return _linkService.GetLinkDetail(id);
  }

  /// <summary>
  /// Récupère les commentaires associés au lien.
  /// </summary>
  /// <param name="id"></param>
  /// <returns></returns>
  [HttpGet("{id:guid}/comments")]
  public ActionResult<LinkComment[]> GetLinkComments(Guid id)
  {
    return _linkService.GetLinkComments(id);
  }

  [HttpPost("{id:guid}/comments")]
  [ProducesResponseType(StatusCodes.Status201Created)]
  [ProducesResponseType(StatusCodes.Status400BadRequest)]
  public ActionResult PublishComment(Guid id, PublishCommentBody cmd)
  {
    var commentId = _linkService.PublishComment(new PublishCommentCommand
    {
      LinkId = id,
      Content = cmd.Content
    });

    return CreatedAtAction(
      nameof(CommentsController.GetById),
      "Comments",
      new { id = commentId },
      null
    );
  }

  /// <summary>
  /// Publie un nouveau lien sur la plateforme
  /// </summary>
  /// <param name="cmd"></param>
  /// <returns></returns>
  [HttpPost]
  [ProducesResponseType(StatusCodes.Status400BadRequest)]
  [ProducesResponseType(StatusCodes.Status201Created)]
  public ActionResult PublishLink(PublishLinkCommand cmd)
  {
    var id = _linkService.PublishLink(cmd);

    return CreatedAtAction(nameof(GetLinkDetail), new { id = id }, null);
  }
}

public class PublishCommentBody
{
  [Required]
  public string Content { get; set; }
}