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using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using Tango.Core;
using Tango.Core.Commands;
using Tango.Logging;
using Tango.Synchronization.Local;
namespace Tango.Synchronization.UI.ViewModels
{
public class MainViewVM : ExtendedObject
{
private String _masterDBFile;
private String _slaveDBFile;
private LocalDBComparer _comparer;
#region Properties
private bool _isBusy;
/// <summary>
/// Gets or sets a value indicating whether an operation is in progress.
/// </summary>
public bool IsBusy
{
get { return _isBusy; }
set { _isBusy = value; RaisePropertyChanged(nameof(IsBusy)); }
}
private String _status;
/// <summary>
/// Gets or sets the current operation status.
/// </summary>
public String Status
{
get { return _status; }
set { _status = value; RaisePropertyChanged(nameof(Status)); }
}
private String _log;
/// <summary>
/// Gets or sets the current application log text.
/// </summary>
public String Log
{
get { return _log; }
set { _log = value; RaisePropertyChanged(nameof(Log)); }
}
private ObservableCollection<Diff> _differences;
/// <summary>
/// Gets or sets the differences.
/// </summary>
public ObservableCollection<Diff> Differences
{
get { return _differences; }
set { _differences = value; RaisePropertyChanged(nameof(Differences)); }
}
private Diff _selectedDifference;
/// <summary>
/// Gets or sets the selected difference.
/// </summary>
public Diff SelectedDifference
{
get { return _selectedDifference; }
set { _selectedDifference = value; RaisePropertyChanged(nameof(SelectedDifference)); InvalidateRelayCommands(); }
}
private String _masterDBName;
/// <summary>
/// Gets or sets the name of the master database.
/// </summary>
public String MasterDBName
{
get { return _masterDBName; }
set { _masterDBName = value; RaisePropertyChanged(nameof(MasterDBName)); }
}
private String _slaveDBName;
/// <summary>
/// Gets or sets the name of the slave database.
/// </summary>
public String SlaveDBName
{
get { return _slaveDBName; }
set { _slaveDBName = value; RaisePropertyChanged(nameof(SlaveDBName)); }
}
#endregion
#region Commands
/// <summary>
/// Gets or sets the browse master database command.
/// </summary>
public RelayCommand BrowseMasterDBCommand { get; set; }
/// <summary>
/// Gets or sets the browse slave database command.
/// </summary>
public RelayCommand BrowseSlaveDBCommand { get; set; }
/// <summary>
/// Gets or sets the compare command.
/// </summary>
public RelayCommand CompareCommand { get; set; }
/// <summary>
/// Gets or sets the commit command.
/// </summary>
public RelayCommand CommitCommand { get; set; }
/// <summary>
/// Gets or sets the commit all command.
/// </summary>
public RelayCommand CommitAllCommand { get; set; }
#endregion
#region Constructors
/// <summary>
/// Initializes a new instance of the <see cref="MainViewVM"/> class.
/// </summary>
public MainViewVM()
{
SimpleStringLogger logger = new SimpleStringLogger(LogCategory.Critical, LogCategory.Error, LogCategory.General, LogCategory.Warning);
logger.LogReceived += (sender,log) =>
{
Log += log.ToString() + Environment.NewLine;
};
LogManager.RegisterLogger(logger);
LogManager.Log("DB Synchronizer Started!");
Differences = new ObservableCollection<Diff>();
BrowseMasterDBCommand = new RelayCommand(BrowseMasterDB);
BrowseSlaveDBCommand = new RelayCommand(BrowseSlaveDB);
CompareCommand = new RelayCommand(Compare, (x) => _masterDBFile != null && _slaveDBFile != null);
CommitCommand = new RelayCommand(Commit, (x) => SelectedDifference != null);
CommitAllCommand = new RelayCommand(CommitAll, (x) => Differences.Count > 0);
Task.Factory.StartNew(() =>
{
OpenStatus("Loading components, please wait...");
Thread.Sleep(1000);
CloseStatus();
});
}
#endregion
#region Private Methods
private void Compare()
{
_comparer = new LocalDBComparer(new SQLiteDataBase(_masterDBFile), new SQLiteDataBase(_slaveDBFile));
OpenStatus("Comparing DataBase...");
Task.Factory.StartNew(() =>
{
try
{
Thread.Sleep(1500);
var diffs = _comparer.Compare();
Differences = new ObservableCollection<Diff>(diffs);
}
catch (Exception ex)
{
ShowError(ex.Message);
}
finally
{
SelectedDifference = null;
InvalidateRelayCommands();
CloseStatus();
}
});
}
private void Commit()
{
OpenStatus("Committing difference...");
Task.Factory.StartNew(() =>
{
try
{
Thread.Sleep(1500);
SelectedDifference.Commit();
InvokeUINow(() => Differences.Remove(SelectedDifference));
}
catch (Exception ex)
{
ShowError(ex.Message);
}
finally
{
SelectedDifference = null;
InvalidateRelayCommands();
CloseStatus();
}
});
}
private void CommitAll()
{
OpenStatus("Committing all differences...");
Task.Factory.StartNew(() =>
{
try
{
Thread.Sleep(1500);
for (int i = 0; i < Differences.Count; i++)
{
var diff = Differences[i];
OpenStatus("Committing difference " + (Differences.IndexOf(diff) + 1) + "...");
diff.Commit();
InvokeUINow(() => Differences.Remove(diff));
i--;
}
}
catch (Exception ex)
{
ShowError(ex.Message);
}
finally
{
SelectedDifference = null;
InvalidateRelayCommands();
CloseStatus();
}
});
}
private void BrowseSlaveDB()
{
String file = BrowseForFilePath();
if (file != null)
{
_slaveDBFile = file;
SlaveDBName = Path.GetFileName(file);
InvalidateRelayCommands();
}
}
private void BrowseMasterDB()
{
String file = BrowseForFilePath();
if (file != null)
{
_masterDBFile = file;
MasterDBName = Path.GetFileName(file);
InvalidateRelayCommands();
}
}
private String BrowseForFilePath()
{
OpenFileDialog dlg = new OpenFileDialog();
dlg.Title = "Select SQLite DataBase File";
dlg.Filter = "SQLite DataBase|*.db";
if (dlg.ShowDialog().Value)
{
return dlg.FileName;
}
return null;
}
private void OpenStatus(String status)
{
IsBusy = true;
Status = status;
}
private void CloseStatus()
{
IsBusy = false;
}
private void ShowError(String message)
{
MessageBox.Show(message, "Tango", MessageBoxButton.OK, MessageBoxImage.Error, MessageBoxResult.No, MessageBoxOptions.DefaultDesktopOnly);
}
private void ShowInfo(String message)
{
MessageBox.Show(message, "Tango", MessageBoxButton.OK, MessageBoxImage.Information, MessageBoxResult.No, MessageBoxOptions.DefaultDesktopOnly);
}
#endregion
}
}
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