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

using Perforce.Helper;
using Perforce.Model;
using Perforce.P4;
using System;
using System.Collections.Generic;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;

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

        private string _filePath;
        private FileMetaData _headMetaData;

        public VersionInfo(string filePath) {
            InitializeComponent();
            _filePath = filePath;
            var helper = Utility.GetPerforceHelper();
            var fileHistory = helper.GetFileHistory(filePath);
            var versionItems = new List<VersionItem>();
            if (fileHistory != null) {
                foreach (var h in fileHistory) {                    
                    var md = helper.RunFstat(h.DepotPath.Path, h.Revision);
                    versionItems.Add(new VersionItem { History = h, MetaData = md });
                }
            }
            RevisionList.ItemsSource = versionItems;
            _headMetaData = helper.RunFstat(filePath);
        }

        private void VersionInfo_Loaded(object sender, RoutedEventArgs e) {
            UIHelper.ScrollToRight();
        }

        private void ReadOnly_Button_Click(object sender, RoutedEventArgs e) {
            var item = RevisionList.SelectedItem as VersionItem;
            CommandHelper.OpenFileFromServer(item.MetaData.DepotPath.Path, item.Revision);
        }

        private bool CanRollback {
            get {
                return MetadataHelper.CanEdit(_headMetaData);
            }
        }

        private void Rollback_Button_Click(object sender, RoutedEventArgs e) {
            var item = RevisionList.SelectedItem as VersionItem;
            var message = string.Format("Are you sure you want to rollback\n{0}\nto revision {1}?", item.MetaData.DepotPath, item.Revision);
            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(VersionItem item) {
            Utility.StopBackgroundProcesses();

            var helper = Utility.GetPerforceHelper();
            var results = helper.RollbackFileToRevision(item.MetaData.DepotPath.Path, item.Revision);
            if (results != null) {
                RevisionList.ItemsSource = helper.GetFileHistory(_filePath);
                var message = string.Format("{0}\nrolled back to revision {1}", item.MetaData.DepotPath, item.Revision);
                UIHelper.ShowTimedMessage(message, 0.5);
            }

            Utility.StartBackgroundProcesses();
        }

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

    public class TruncateTextConverter : IValueConverter {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) {
            var original = value.ToString().Trim();
            var truncated = original;
            if (original.Length > 20) {
                truncated = string.Format("{0}...", original.Substring(0, 20));
            }
            return truncated;
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) {
            return null;
        }
    }
}