//
// Copyright 2014 Perforce Software Inc.
//

using Perforce.Helper;
using System;
using System.Collections.Generic;
using System.Threading;
using System.Windows;
using System.Windows.Controls;

namespace Perforce.View {
    /// <summary>
    /// Interaction logic for FolderHistory.xaml
    /// </summary>
    public partial class FolderHistory : UserControl {

        private string _depotPath;

        public FolderHistory(string depotPath) {
            InitializeComponent();
            var history = new List<FolderHistoryItem>();
            var helper = Utility.GetPerforceHelper();
            var changes = helper.ListChanges(depotPath);
            _depotPath = depotPath;
            if (changes != null) {
                foreach (var c in changes) {
                    history.Add(new FolderHistoryItem { Path = depotPath, Id = c.Id, ModifiedDate = c.ModifiedDate, Description = c.Description, User = c.OwnerName, Client = c.ClientId });
                }
            }
            RevisionList.ItemsSource = history;
        }

        private void Rollback_Button_Click(object sender, RoutedEventArgs e) {
            var item = RevisionList.SelectedItem as FolderHistoryItem;
            var message = string.Format("Are you sure you want to rollback\n{0}\nto changelist @{1}?", item.Path, item.Id); 
            var main = App.Current.MainWindow as MainWindow;
            var dialog = main.DialogManager.CreateMessageDialog(message, Technewlogic.WpfDialogManagement.DialogMode.OkCancel);
            dialog.VerticalDialogAlignment = VerticalAlignment.Top;
            dialog.Ok = () => { DoRollback(item); };
            dialog.Cancel = RollbackCancelled;
            dialog.Show();
        }

        private void DoRollback(FolderHistoryItem item) {
            Utility.StopBackgroundProcesses();
            var helper = Utility.GetPerforceHelper();
            var main = App.Current.MainWindow as MainWindow;
            var dialog = main.DialogManager.CreateWaitDialog("Rolling back...", "Rollback complete", Technewlogic.WpfDialogManagement.DialogMode.Ok);
            dialog.VerticalDialogAlignment = System.Windows.VerticalAlignment.Top;
            dialog.CanOk = false;
            dialog.Show(() => {
                string resultsMessage = string.Empty;
                try {
                    var results = helper.RollbackFolderToChangelist(item.Path, item.Id);
                    if (results != null) {
                        resultsMessage = string.Format("{0}\nrolled back to changelist @{1}", item.Path, item.Id);
                    } else {
                        resultsMessage = string.Format("{0}\nNOT ROLLED BACK -- NO CHANGES", item.Path);
                    }
                } catch (ApplicationException ae) {
                    resultsMessage = ae.Message;
                }
                dialog.ReadyMessage = resultsMessage;
                dialog.CanOk = true;
                Utility.StartBackgroundProcesses();
            });
        }

        private void RollbackCancelled() {
            UIHelper.ShowTimedMessage("Rollback cancelled", 0.5);
        }

        private void ShowFiles_Button_Click(object sender, RoutedEventArgs e) {
            var item = RevisionList.SelectedItem as FolderHistoryItem;
            var helper = Utility.GetPerforceHelper();
            var change = helper.GetChangelist(item.Id);
            if (change != null) {
                var details = new ChangelistDetails(change);
                details.ShowDialog();
            }
        }
    }

    public class FolderHistoryItem {
        public string Path { get; set; }
        public int Id { get; set; }
        public DateTime ModifiedDate { get; set; }
        public string Description { get; set; }
        public string User { get; set; }
        public string Client { get; set; }
    }
}