public async Task <JsonNetResult> ByVideo(GetVideoCommentsViewModel model)
{
VideoComments result = await _comments.GetVideoComments(new GetVideoComments
{
VideoId = model.VideoId,
PageSize = model.PageSize,
FirstCommentIdOnPage = model.FirstCommentIdOnPage
});
// For the ViewModel, we also want to include the information about a user who made the comments on the video, so
// get the user profile information for the comments and then use a LINQ to Objects Join to merge the two together
// (this should be OK since the dataset should be small)
IEnumerable <UserProfile> userProfiles = await _userManagement.GetUserProfiles(result.Comments.Select(c => c.UserId).ToHashSet());
var returnModel = new VideoCommentsViewModel
{
VideoId = result.VideoId,
Comments = result.Comments.Join(userProfiles, c => c.UserId, up => up.UserId, (c, up) => new VideoCommentViewModel
{
CommentId = c.CommentId,
Comment = c.Comment,
CommentTimestamp = c.CommentTimestamp,
UserProfileUrl = Url.Action("Info", "Account", new { userId = c.UserId }),
UserFirstName = up.FirstName,
UserLastName = up.LastName,
UserGravatarImageUrl = GravatarHasher.GetImageUrlForEmailAddress(up.EmailAddress)
}).ToList()
};
return(JsonSuccess(returnModel));
}
public async Task <JsonNetResult> Add(AddCommentViewModel model)
{
// Shouldn't throw because of the Authorize attribute
Guid userId = User.GetCurrentUserId().Value;
var commentTimestamp = DateTimeOffset.UtcNow;
// Add the new comment
var commentOnVideo = new CommentOnVideo
{
UserId = userId,
VideoId = model.VideoId,
CommentId = TimeUuid.NewId(commentTimestamp),
Comment = model.Comment
};
await _comments.CommentOnVideo(commentOnVideo);
// Lookup the current user's information to include in the return data
UserProfile userInfo = await _userManagement.GetUserProfile(userId);
return(JsonSuccess(new VideoCommentViewModel
{
CommentId = commentOnVideo.CommentId,
Comment = commentOnVideo.Comment,
CommentTimestamp = commentTimestamp,
UserProfileUrl = Url.Action("Info", "Account", new { userId }),
UserFirstName = userInfo.FirstName,
UserLastName = userInfo.LastName,
UserGravatarImageUrl = GravatarHasher.GetImageUrlForEmailAddress(userInfo.EmailAddress)
}));
}
/// <summary>
/// Creates a ViewModel instance from the common user profile model returned from the data layer.
/// </summary>
public static UserProfileViewModel FromDataModel(UserProfile data)
{
if (data == null)
{
return(null);
}
return(new UserProfileViewModel
{
UserId = data.UserId,
EmailAddress = data.EmailAddress,
FirstName = data.FirstName,
LastName = data.LastName,
ProfileImageUrl = GravatarHasher.GetImageUrlForEmailAddress(data.EmailAddress)
});
}
