/// <summary>
/// Get all images
/// </summary>
/// <param name="page">current page</param>
/// <param name="pageSize">number of items to show</param>
/// <param name="searchQuery">search items by this criteria</param>
/// <returns>IPaginationModel Instance</returns>
public virtual async Task <IPaginationModel <Image> > GetImagesAsync(int?page, int pageSize, string searchQuery)
{
//Check for unwanted values
int currentPage = page ?? 1;
searchQuery = searchQuery ?? string.Empty;
//Count number of iamge instances in repository
int totalRecords = await imageRepo.CountAsync();
//Check if variable currentPage valid
currentPage = page ?? pgMaker.CheckPageLimits(currentPage, totalRecords, pageSize);
//Get instances
int skip = pgMaker.Skip(currentPage, pageSize);
var instances = await imageRepo.ListPaginationAsync(skip, pageSize);
//Prepare pagination model
var pgOptions = new PaginationOptions(currentPage, totalRecords, pageSize);
return(pgMaker.PreparePaginationModel(instances, pgOptions));
}
/// <summary>
/// Categories pagination
/// </summary>
/// <param name="page">current page</param>
/// <param name="searchQuery">search query</param>
/// <param name="pageSize">pageSize parametar is fixed(user cant change it)
/// in this case so we dont need to check if pagesize is negative</param>
/// <returns>Instnace of IPaginationModel</returns>
public virtual async Task <IPaginationModel <Category> > GetCategoriesAsync(int?page, string searchQuery, int pageSize)
{
//Validate input
int currentPage = page ?? 1;
string search = searchQuery ?? string.Empty;
//Get number of instances from database that containts specific text
var firstSpecification = new CategorySpecification(search);
var numberOfCategories = await repository.CountAsync(firstSpecification);
//Is requested page valid ?
currentPage = maker.CheckPageLimits(currentPage, numberOfCategories, pageSize);
//Get required instances from database
int skip = maker.Skip(currentPage, pageSize);
int take = pageSize;
var secondSpecification = new CategorySpecification(skip, take, search);
var listOfCategories = await repository.ListAsync(secondSpecification);
//Return instance of IPaginationModel
var pgOptions = new PaginationOptions(currentPage, numberOfCategories, pageSize);
return(maker.PreparePaginationModel(listOfCategories, pgOptions));
}