/// <summary>
///
/// </summary>
/// <param name="openLibraryId"></param>
/// <returns></returns>
public async Task <OpenLibraryBook?> GetBook(string openLibraryId)
{
return(await this.cache.GetOrCreateAsync($"OL-BOOK-{openLibraryId}", async (_) =>
{
try
{
openLibraryId = openLibraryId.Replace("/works/", "");
using HttpClient client = this.clientFactory.CreateClient();
HttpResponseMessage response = await client.GetAsync($"{baseUrl}/works/{openLibraryId}.json");
if (!response.IsSuccessStatusCode)
{
return null;
}
string responseString = await response.Content.ReadAsStringAsync();
OpenLibraryBook book = JsonConvert.DeserializeObject <OpenLibraryBook>(responseString);
book.Authors = (await book.AuthorsKeys.SelectAsync(async(author) => await this.GetAuthor(author.Author.Key)))
.Where(a => a != null)
.ToList() !;
return book;
}
catch
{
return null;
}
}));
}
/// <summary>
/// Creates a post from a model
/// </summary>
/// <param name="postModel">The model for creation</param>
/// <returns>
/// The newly created post as a PostModel
/// </returns>
public async Task <PostModel> CreatePost(AuthUserModel authUser, PostModel postModel, OpenLibraryService openLibraryService)
{
// Get the information
OpenLibraryBook opBook = await openLibraryService.GetBookInformation(postModel.ISBN);
// Determine how to handle author
string author = null;
if (opBook == null)
{
throw new ArgumentException("This is an invalid ISBN, please try again using a correct number");
}
else
{
if (opBook.by_statement == null && opBook.authors != null)
{
// Get the author statement
OpenLibraryAuthor opauthor = await openLibraryService.GetAuthorInformation(opBook.authors.FirstOrDefault().key);
if (opauthor != null)
{
author = opauthor.name;
}
}
else
{
author = opBook.by_statement;
}
Post post = new Post
{
Title = postModel.Title,
Body = postModel.Body,
Posted_At = DateTime.Now,
Posted_ById = authUser.Id,
ISBN = postModel.ISBN,
BookTitle = opBook.title,
WorksId = opBook.works.FirstOrDefault()?.key.Replace("/works/", ""),
Author = author
};
context.Posts.Add(post);
context.SaveChanges();
return(this.GetPost(post.Id, null));
}
}
