public async Task <string> CreateTeamSiteCollectionAsync(TeamSiteCollectionRequest request)
{
var X509Cert = GetX509Certificate2();
var accessToken = await graphClientApi.AcquireTokenAsync(X509Cert);
using var authmanager = new AuthenticationManager();
using var context = authmanager.GetAzureADAppOnlyAuthenticatedContext(
AppConfigurations.SpoUrlAdmin,
AppConfigurations.ClientID,
AppConfigurations.TenantID,
X509Cert);
var teamSiteCollection = new TeamSiteCollectionCreationInformation
{
Alias = request.Alias,
DisplayName = request.DisplayName,
Description = request.Description,
Lcid = (uint)request.Language,
Owners = request.Owners == null || request.Owners.Length == 0
? new[] { AppConfigurations.SpoUserAdmin }
: request.Owners
};
await SiteCollection.CreateTeamSiteViaGraphAsync(context, teamSiteCollection, noWait : true, graphAccessToken : accessToken);
return($"{AppConfigurations.SpoUrl}/sites/{request.Alias}");
}