public async Task <IEnumerable <ArticleForListContract> > Handle(QueryArticlesContract contract)
{
Validate(contract);
var articlesInStorage = await _articleService.GetArticles(contract.FiledToSort, contract.Desc, contract.Offset, contract.Limit);
var articles = articlesInStorage?.Select(a =>
new ArticleForListContract
{
Id = a.Id,
Title = a.Title,
Timestamp = a.Timestamp,
});
return(articles);
}
private void Validate(QueryArticlesContract contract)
{
string normalizedFiledToSort = contract.FiledToSort?.ToLowerInvariant();
if (normalizedFiledToSort != "id" &&
normalizedFiledToSort != "title" &&
normalizedFiledToSort != "body" &&
normalizedFiledToSort != "timestamp")
{
throw new ArgumentException("Unknown FieldToSort");
}
if (contract.Limit < 0)
{
throw new ArgumentException("Limit must be greater than or equal to zero");
}
if (contract.Offset < 0)
{
throw new ArgumentException("Offset must be greater than or equal to zero");
}
}
public async Task <IEnumerable <ArticleForListContract> > GetAsync([FromBody] QueryArticlesContract contract)
{
return(await _getListArticlesRequestHandler.Handle(contract));
}
