using HackerNet.Application;
using HackerNet.Domain;

namespace HackerNet.Infrastructure.Repositories.Memory;



public class MemoryLinkRepository : ILinkRepository, IReadStore
{
  private List<Link> _links;

  public MemoryLinkRepository(params Link[] links)
  {
    _links = links.ToList();
  }

  public void Add(Link link)
  {
    _links.Add(link);
  }

  public LinkHomePage GetLinkDetail(Guid id)
    => GetLinks(id).Single();

  public LinkHomePage[] GetPublishedLinks()
  {
    // return (from l in _links
    //         orderby l.CreatedAt descending
    //         select new LinkHomePage
    //         {
    //           Id = l.Id,
    //           Url = l.Url,
    //           Description = l.Description,
    //           CommentsCount = 0,
    //         }).ToArray();

    return GetLinks().ToArray();
  }

  private IEnumerable<LinkHomePage> GetLinks(Guid? id = null)
  {
    return _links
      .Where(l => !id.HasValue || l.Id == id)
      .OrderByDescending(l => l.CreatedAt)
      .Select(l => new LinkHomePage
      {
        Id = l.Id,
        Url = l.Url,
        Description = l.Description,
        CommentsCount = 0,
      });
  }
}