/// <summary>
/// Appends a culture cookie to the HTTP response, when appropriate, to store the client's culture preference
/// </summary>
/// <remarks>
/// <para>If the current request does not already contain a culture cookie, a new one will be appended to the response.</para>
/// <para>If the request contains a culture cookie but it is different from the current culture, a new cookie will be appended.</para>
/// </remarks>
public Task Invoke(HttpContext context)
{
var request = context.Request;
var path = request.Path;
var excludedRoutes = _routeCultureOptions.Value.ExcludedRoutes ?? new List <string>();
if (ExcludedRouteProvider.IsExcludedRoute(excludedRoutes, path))
{
return(_next(context));
}
var locale = CultureInfo.CurrentCulture.Name;
var cookie = context.Request.Cookies[CookieRequestCultureProvider.DefaultCookieName];
var cookieValue = CookieRequestCultureProvider.ParseCookieValue(cookie);
if (!string.IsNullOrWhiteSpace(cookie) && cookieValue.Cultures.Contains(locale))
{
return(_next(context));
}
context.Response.Cookies.Append(
CookieRequestCultureProvider.DefaultCookieName,
CookieRequestCultureProvider.MakeCookieValue(new RequestCulture(culture: locale, uiCulture: locale)),
new CookieOptions {
Expires = _cookieExpires, IsEssential = _cookieIsEssential
}
);
_logger.LogLocalizationCookieAppended(request.Path);
return(_next(context));
}
/// <summary>
/// Tests the request culture against supported application cultures and non-culture values. Throws a <see cref="CultureNotFoundException"/> if request culture is not supported.
/// </summary>
public Task Invoke(HttpContext context)
{
var path = context.Request.Path;
var parameters = context.Request.Path.Value.Split('/');
if (parameters is null || parameters.Length <= 1)
{
return(_next(context));
}
var culture = parameters[_routeCultureOptions.Value.CultureParameterIndex];
var excludedRoutes = _routeCultureOptions.Value.ExcludedRoutes ?? new List <string>();
if (ExcludedRouteProvider.IsExcludedRoute(excludedRoutes, path))
{
return(_next(context));
}
else if (IsSupportedCulture(culture))
{
return(_next(context));
}
else
{
throw new CultureNotFoundException();
}
}