using System;
using System.IO;

namespace SourceGit.Commands {
    public class LFS {
        class PruneCmd : Command {
            public PruneCmd(string repo, Action<string> onProgress) {
                WorkingDirectory = repo;
                Context = repo;
                Args = "lfs prune";
                TraitErrorAsOutput = true;
                _outputHandler = onProgress;
            }

            protected override void OnReadline(string line) {
                _outputHandler?.Invoke(line);
            }

            private Action<string> _outputHandler;
        }

        public LFS(string repo) {
            _repo = repo;
        }

        public bool IsEnabled() {
            var path = Path.Combine(_repo, ".git", "hooks", "pre-push");
            if (!File.Exists(path)) return false;

            var content = File.ReadAllText(path);
            return content.Contains("git lfs pre-push");
        }

        public void Prune(Action<string> outputHandler) {
            new PruneCmd(_repo, outputHandler).Exec();
        }

        private string _repo;
    }
}