using Avalonia.Threading;
using CommunityToolkit.Mvvm.ComponentModel;
using System.Collections.Generic;
using System.Threading.Tasks;

namespace SourceGit.ViewModels {
    public class FileHistories : ObservableObject {
        public string File {
            get => _file;
        }

        public bool IsLoading {
            get => _isLoading;
            private set => SetProperty(ref _isLoading, value);
        }

        public List<Models.Commit> Commits {
            get => _commits;
            set => SetProperty(ref _commits, value);
        }

        public Models.Commit SelectedCommit {
            get => _selectedCommit;
            set {
                if (SetProperty(ref _selectedCommit, value)) {
                    if (value == null) {
                        DiffContext = null;
                    } else {
                        DiffContext = new DiffContext(_repo, new Models.DiffOption(value, _file));
                    }
                }
            }
        }

        public DiffContext DiffContext {
            get => _diffContext;
            set => SetProperty(ref _diffContext, value);
        }

        public FileHistories(string repo, string file) {
            _repo = repo;
            _file = file;

            Task.Run(() => {
                var commits = new Commands.QueryCommits(_repo, $"-n 10000 -- \"{file}\"").Result();
                Dispatcher.UIThread.Invoke(() => {
                    IsLoading = false;
                    Commits = commits;
                    if (commits.Count > 0) SelectedCommit = commits[0];
                });
            });
        }

        public void NavigateToCommit(string commitSHA) {
            var repo = Preference.FindRepository(_repo);
            if (repo != null) repo.NavigateToCommit(commitSHA);
        }

        private string _repo = string.Empty;
        private string _file = string.Empty;
        private bool _isLoading = true;
        private List<Models.Commit> _commits = null;
        private Models.Commit _selectedCommit = null;
        private DiffContext _diffContext = null;
    }
}