public async Task <IActionResult> CreatePost([FromForm] string caption,
[FromForm] IList <IFormFile> uploads,
[FromRoute] string username)
{
if (uploads.Count <= 0)
{
return(BadRequest(new { Err = "Cannot create a post without any photo!" }));
}
// validate user
var user = await DbContext.Users.SingleOrDefaultAsync(u => u.Username == username);
if (user is null)
{
return(BadRequest(new { Err = "Unauthorized user!" }));
}
var transaction = DbContext.Database.BeginTransaction();
// create post content
var post = new Post()
{
Caption = caption,
UserId = user.Id,
Created = DateTimeOffset.UtcNow
};
DbContext.Add(post);
await DbContext.SaveChangesAsync();
post = await DbContext.Posts
.Include(p => p.User).ThenInclude(u => u.AvatarPhoto)
.Where(p => p.Id == post.Id)
.FirstOrDefaultAsync();
// create file uploads
var uploadedFiles = uploads.Select(async upload => await PhotoUtils.UploadPhotoAsync(upload, PhotoServingPath))
.Select(task => task.Result)
.Select(fileName => new Photo()
{
PostId = post.Id,
FileName = fileName
});
DbContext.AddRange(uploadedFiles);
await DbContext.SaveChangesAsync();
await transaction.CommitAsync();
return(Created(Url.Action("GetPostById", "Post", new { id = post.Id }), ResponseModelFactory.Create(post)));
}