public async Task <IEnumerable <string> > GetUrlsFromCsv(Stream stream)
{
var urls = new List <string>();
using (var streamReader = new StreamReader(stream))
using (var csvReader = new CsvReader(streamReader, CultureInfo.CurrentUICulture))
{
var checkingHeader = true;
while (await csvReader.ReadAsync())
{
var url = csvReader.GetField <string>(0);
if (checkingHeader)
{
checkingHeader = false;
var isHeaderRow = _urlAdapter.TryGetUrlHash(url) == null;
if (isHeaderRow)
{
continue;
}
}
urls.Add(url);
}
}
return(urls);
}
private async Task <IEnumerable <HomeUrlMappingViewModel> > TryCreateShortUrls(string websiteUrl, IEnumerable <string> urls)
{
var mappings = new List <(string url, string urlHash)>();
foreach (var url in urls)
{
var urlWithProtocol = _urlUtil.GetUrlWithProtocol(url);
var urlHash = _urlAdapter.TryGetUrlHash(urlWithProtocol);
if (urlHash != null)
{
mappings.Add((urlWithProtocol, urlHash));
}
}
if (await _urlRepository.TryCreateShortUrls(mappings))
{
var viewModels = mappings.Select(m => new HomeUrlMappingViewModel(websiteUrl, m.url, m.urlHash));
return(viewModels);
}
return(null);
}
public void UrlAdapterStringToHex_TryGetUrlHash_ShouldReturnNullFor_InvalidUrl(string input)
{
Assert.Null(_urlAdapter.TryGetUrlHash(input));
}