static async Task <byte[]> GetGravatarAsync(string email, int size, float scale, DefaultGravatar defaultGravatar)
{
var requestUri = GetGravatarUri(email, size, scale, defaultGravatar);
using var response = await lazyHttp.Value.GetAsync(requestUri);
if (!response.IsSuccessStatusCode)
{
return(Array.Empty <byte>());
}
return(await response.Content.ReadAsByteArrayAsync());
}
static string DefaultGravatarName(DefaultGravatar defaultGravatar)
=> defaultGravatar switch
{
static string GetGravatarUri(string email, int size, float scale, DefaultGravatar defaultGravatar) => string.Format(requestUriFormat, GetMd5Hash(email), size * scale, DefaultGravatarName(defaultGravatar));
/// <summary>
/// Gets a Gravatar Url as string.
/// </summary>
/// <param name="email">Email to generate Gravatar for.</param>
/// <param name="size">The size in pixels, between 1 and 512.</param>
/// <param name="defaultImage">A default Gravatar generation policy. See <see cref="Gravatar.DefaultGravatar"/> for details.</param>
/// <param name="rating">Image rating to display for. See <see cref="Gravatar.GravatarRating"/> for details.</param>
/// <returns>A Gravatar Url</returns>
public static string Generate(string email, int size, DefaultGravatar defaultImage, GravatarRating rating)
{
GravatarGenerator gravatar = new GravatarGenerator(email, false)
.Size(size)
.Rating(rating)
.DefaultImage(defaultImage);
return gravatar.Url;
}
/// <summary>
/// How to generate a default image if no gravatar exists for the email. See <see cref="Gravatar.DefaultGravatar"/> for details.
/// </summary>
/// <param name="defaultImage">What type of default image to generate.</param>
public GravatarGenerator DefaultImage(DefaultGravatar defaultImage)
{
this._DefaultDisplay = defaultImage;
return this;
}
/// <summary>
/// Gets a Gravatar Url as string.
/// </summary>
/// <param name="helper">UrlHelper object.</param>
/// <param name="email">Email to generate Gravatar for.</param>
/// <param name="size">The size in pixels, between 1 and 512.</param>
/// <param name="defaultImage">A default Gravatar generation policy. See <see cref="Gravatar.DefaultGravatar"/> for details.</param>
/// <returns>A Gravatar Url</returns>
public static string Gravatar(this UrlHelper helper, string email, int size, DefaultGravatar defaultImage)
{
GravatarGenerator gravatar = new GravatarGenerator(email, helper.RequestContext.HttpContext.Request.IsSecureConnection)
.Size(size)
.DefaultImage(defaultImage);
return gravatar.Url;
}
