/// <summary>
/// Checks if this site collection has a Teams team linked
/// </summary>
/// <param name="site">Site collection</param>
/// <param name="accessToken">Graph access token (groups.read.all) </param>
/// <returns>True if there's a team</returns>
public static bool HasTeamsTeam(this Site site, string accessToken)
{
bool result = false;
site.EnsureProperties(s => s.RootWeb, s => s.GroupId);
// A site without a group cannot have been teamified
if (site.GroupId == Guid.Empty)
{
return(false);
}
// fall back to Graph untill we've a SharePoint approach that works
result = UnifiedGroupsUtility.HasTeamsTeam(site.GroupId.ToString(), accessToken);
// Problem is that this folder property is not always set
/*
* site.EnsureProperties(s => s.RootWeb, s => s.GroupId);
* List defaultDocumentLibrary = site.RootWeb.DefaultDocumentLibrary();
* site.RootWeb.Context.Load(defaultDocumentLibrary, f=>f.RootFolder);
* site.RootWeb.Context.ExecuteQueryRetry();
*
* if (defaultDocumentLibrary.RootFolder.FolderExists("General"))
* {
* // Load folder properties
* var generalFolder = defaultDocumentLibrary.RootFolder.EnsureFolder("General", p => p.Properties);
* site.RootWeb.Context.Load(generalFolder);
* site.RootWeb.Context.ExecuteQueryRetry();
*
* // Do we have the Teams channel entry ?
* string Vti_TeamChannelUrl = "vti_teamchannelurl";
*
* if (generalFolder.Properties.FieldValues.ContainsKey(Vti_TeamChannelUrl))
* {
* var teamChannelUrl = generalFolder.Properties.FieldValues[Vti_TeamChannelUrl]?.ToString();
* if (!string.IsNullOrEmpty(teamChannelUrl))
* {
* // Sample teams url: https://teams.microsoft.com/l/channel/19%3A0000866a32964362b5db23f21f81704c%40thread.skype/General?groupId=c1430c5f-c423-44b8-b083-bd81ca3f09d0&tenantId=ad20b775-5d3b-40f5-b144-c5c2c772b73e
* // Just verify the url has a reference to the site's group id
* if (teamChannelUrl.ToLower().Contains(site.GroupId.ToString().ToLower()))
* {
* return true;
* }
* }
* }
* }
*/
return(result);
}