IObservable <Unit> DoCheckout()
{
OperationError = null;
return(Observable.Defer(async() =>
{
var localBranches = await pullRequestsService.GetLocalBranches(LocalRepository, Model).ToList();
if (localBranches.Count > 0)
{
return pullRequestsService.SwitchToBranch(LocalRepository, Model);
}
else
{
return pullRequestsService
.GetDefaultLocalBranchName(LocalRepository, Model.Number, Model.Title)
.SelectMany(x => pullRequestsService.Checkout(LocalRepository, Model, x));
}
}).Do(_ =>
{
if (IsFromFork)
{
usageTracker.IncrementCounter(x => x.NumberOfForkPullRequestsCheckedOut).Forget();
}
else
{
usageTracker.IncrementCounter(x => x.NumberOfLocalPullRequestsCheckedOut).Forget();
}
}));
}
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>();
}));
}