IObservable <Unit> DoCheckout(object unused)
{
IObservable <Unit> operation = null;
switch (CheckoutMode)
{
case CheckoutMode.NeedsPull:
operation = pullRequestsService.Pull(repository);
break;
case CheckoutMode.Fetch:
operation = pullRequestsService
.GetDefaultLocalBranchName(repository, Model.Number, Model.Title)
.SelectMany(x => pullRequestsService.FetchAndCheckout(repository, Model.Number, x));
break;
case CheckoutMode.Switch:
operation = pullRequestsService.SwitchToBranch(repository, Model);
break;
case CheckoutMode.InvalidState:
operation = pullRequestsService
.UnmarkLocalBranch(repository)
.SelectMany(_ => pullRequestsService.GetDefaultLocalBranchName(repository, Model.Number, Model.Title))
.SelectMany(x => pullRequestsService.FetchAndCheckout(repository, Model.Number, x));
break;
default:
Debug.Fail("Invalid CheckoutMode in PullRequestDetailViewModel.DoCheckout.");
operation = Observable.Empty <Unit>();
break;
}
return(operation.Catch <Unit, Exception>(ex =>
{
CheckoutError = ex.Message;
return Observable.Empty <Unit>();
}));
}