public static string[] GetWebLinkVariations(string originalUrl, WebLinkVariationTypes variationTypes)
{
var trimmed = originalUrl?.Trim();
if (string.IsNullOrEmpty(trimmed))
{
return(new string[0]);
}
var variations = Enumerable.Repeat(trimmed, 1);
if (variationTypes.HasFlag(WebLinkVariationTypes.IgnoreScheme))
{
variations = GetSchemeAgnostic(trimmed);
}
if (variationTypes.HasFlag(WebLinkVariationTypes.IgnoreTrailingSlash))
{
variations = variations.SelectMany(v => GetSlashAgnostic(v));
}
return(variations.ToArray());
}
/// <summary>
/// Matches weblink by URL, including all scheme variations (no scheme, http, https).
/// </summary>
/// <remarks>
/// If link is https://www.nicovideo.jp/user/9979822, this matches
/// www.nicovideo.jp/user/9979822 (no scheme)
/// https://www.nicovideo.jp/user/9979822 (https)
/// http://www.nicovideo.jp/user/9979822 (http)
/// </remarks>
public static IQueryable <TLink> WhereUrlIs <TLink>(this IQueryable <TLink> query, string url, WebLinkVariationTypes variationTypes)
where TLink : class, IWebLink
{
var variations = WebLinkVariationsFactory.GetWebLinkVariations(url, variationTypes);
return(query.Where(w => variations.Contains(w.Url)));
}
public static IQueryable <T> WhereHasLink <T, TLink>(this IQueryable <T> query, string url, WebLinkVariationTypes variationTypes)
where T : IEntryWithLinks <TLink> where TLink : WebLink
{
var variations = WebLinkVariationsFactory.GetWebLinkVariations(url, variationTypes);
return(query.Where(e => e.WebLinks.Any(w => variations.Contains(w.Url))));
}