using System.Threading.Tasks;

namespace SourceGit.ViewModels
{
    public class FetchInto : Popup
    {
        public Models.Branch Local
        {
            get;
        }

        public Models.Branch Upstream
        {
            get;
        }

        public FetchInto(Repository repo, Models.Branch local, Models.Branch upstream)
        {
            _repo = repo;
            Local = local;
            Upstream = upstream;
        }

        public override async Task<bool> Sure()
        {
            using var lockWatcher = _repo.LockWatcher();
            ProgressDescription = "Fast-Forward ...";

            var log = _repo.CreateLog($"Fetch Into '{Local.FriendlyName}'");
            Use(log);

            await new Commands.Fetch(_repo.FullPath, Local, Upstream)
                .Use(log)
                .RunAsync();

            log.Complete();

            if (_repo.SelectedViewIndex == 0)
            {
                var newHead = await new Commands.QueryRevisionByRefName(_repo.FullPath, Local.Name).GetResultAsync();
                _repo.NavigateToCommit(newHead, true);
            }

            return true;
        }

        private readonly Repository _repo = null;
    }
}