protected async Task <int> GetTotalPages(
PostsQuery request,
int?userId = default,
CancellationToken cancellationToken = default)
{
var postSpecification = this.GetPostSpecification(request);
var userSpecification = this.GetUserSpecification(request, userId);
var totalPosts = await this.postRepository.Total(
postSpecification,
userSpecification,
cancellationToken);
return((int)Math.Ceiling((double)totalPosts / PostsPerPage));
}
protected async Task <IEnumerable <TOutputModel> > GetPostListings <TOutputModel>(
PostsQuery request,
int?userId = default,
CancellationToken cancellationToken = default)
{
var postSpecification = this.GetPostSpecification(request);
var userSpecification = this.GetUserSpecification(request, userId);
var searchOrder = new PostsSortOrder(request.SortBy, request.Order);
var skip = (request.Page - 1) * PostsPerPage;
return(await this.postRepository.GetPostListings <TOutputModel>(
postSpecification,
userSpecification,
searchOrder,
skip,
take : PostsPerPage,
cancellationToken));
}
private Specification <Post> GetPostSpecification(PostsQuery request) => new PostByCategorySpecification(request.Category) .And(new PostByCreatedOnSpecification(request.StartDate, request.EndDate));
private Specification <PublicUser> GetUserSpecification(PostsQuery request, int?userId) => new PublicUserByIdSpecification(userId) .And(new PublicUserByUserNameSpecification(request.User));
