/// <summary>
/// Add a relationship to other user by their id.
/// </summary>
/// <param name="userId">The user id.</param>
/// <param name="relations">The relations.</param>
/// <returns>The <see cref="Task"/>.</returns>
public async Task AddById(long userId, Relation[] relations)
{
var query = GetRelationsQueryParams(userId, relations);
var url = this.GetFinalUrl(string.Format("{0}.json", Endpoints.Relationships), query);
await this.Client.PostAsync(url);
}
/// <summary>
/// Get the relations query params.
/// </summary>
/// <param name="userId">The user id.</param>
/// <param name="relations">The relations.</param>
/// <returns>The <see cref="string"/>.</returns>
private static string GetRelationsQueryParams(long? userId, Relation[] relations)
{
var queryParams = string.Empty;
var relationsStringArray = relations.Select(x => string.Format("{0}={1}", x.Relationship.ToString().ToLowerInvariant(), x.UserId)).ToArray();
var relationsQueryParams = string.Join("&", relationsStringArray);
if (userId != null)
{
queryParams = string.Format(
"{0}&{1}",
new RelationshipQuery(userId, null).SerializeQueryString(),
relationsQueryParams);
}
else
{
queryParams = relationsQueryParams;
}
return queryParams;
}
