/// <summary>
/// Finds 5 followers per username per run. I.e: if runs is set to 1 finds 5 users that follow the initial username.
/// If runs is set to 2, finds 5 users that follow the inital username and then 5 users that follow each of those users' usernames.
/// </summary>
/// <param name="username"> username that all followers stem from </param>
/// <param name="runs"> One-indexed value for how deep the runs go (max 3 required by project) </param>
/// <returns> A list of users that follow the username, sometimes indirectly (following followers of the username) </returns>
public async Task <IEnumerable <User> > FindFollowersByUsername(string username, int runs)
{
var followers = new List <User>();
var loginsToSearch = new List <string> {
username
}; // initalize with the given githubId
for (int i = 0; i < runs; i++)
{
var followersFound = new List <User>();
foreach (var login in loginsToSearch)
{
followersFound.AddRange(await _api.FindFiveFollowersByUsername(login));
}
followers.AddRange(followersFound);
loginsToSearch = followersFound.Select(x => x.Login).ToList();
}
return(followers);
}