using H.Pipes;
using InABox.Configuration;
using InABox.Core;
using InABox.DynamicGrid;
using InABox.Wpf.Editors;
using InABox.WPF;
using PRSServices;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;
using System.Timers;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace PRSLicensing;

/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class Console : Window, INotifyPropertyChanged
{
    private LicensingConfiguration Settings { get; set; }

    private Timer timer;

    public event PropertyChangedEventHandler? PropertyChanged;

    private bool _isRunning = false;
    public bool IsRunning
    {
        get => _isRunning;
        set
        {
            _isRunning = value;
            OnPropertyChanged();
            OnPropertyChanged(nameof(IsNotRunning));
        }
    }
    public bool IsNotRunning => !_isRunning;

    private bool _isInstalled = false;
    public bool IsInstalled
    {
        get => _isInstalled;
        set
        {
            _isInstalled = value;
            OnPropertyChanged();
        }
    }

    private PipeClient<string>? _client;
    private Timer? RefreshTimer;

    public Console()
    {
        InitializeComponent();
        LoadSettings();

        Progress.DisplayImage = PRSLicensing.Resources.splash_small.AsBitmapImage();

        timer = new Timer(2000);
        timer.Elapsed += Timer_Elapsed;
        timer.AutoReset = true;
        timer.Start();
    }

    private void Window_Loaded(object sender, RoutedEventArgs e)
    {
        RefreshStatus();
    }

    private void Timer_Elapsed(object? sender, ElapsedEventArgs e)
    {
        RefreshStatus();
    }

    protected override void OnClosing(CancelEventArgs e)
    {
        base.OnClosing(e);

        _client?.DisposeAsync().AsTask().Wait();
        _client = null;
        RefreshTimer?.Stop();
    }

    private void RefreshStatus()
    {
        IsRunning = PRSServiceInstaller.IsRunning(Settings.GetServiceName());
        IsInstalled = PRSServiceInstaller.IsInstalled(Settings.GetServiceName());

        if(_client is null)
        {
            if (IsRunning)
            {
                CreateClient();
            }
        }
        else if(_client.PipeName != GetPipeName())
        {
            _client.DisposeAsync().AsTask().Wait();
            _client = null;
            CreateClient();
        }
        
    }

    private bool _creatingClient = false;

    private void CreateClient()
    {
        if (_creatingClient) return;

        _creatingClient = true;

        var client = new PipeClient<string>(GetPipeName(), ".");
        client.MessageReceived += (o, args) =>
        {
            Dispatcher.BeginInvoke(() =>
            {
                ConsoleControl.LoadLogEntry(args.Message ?? "");
            });
        };
        client.Connected += (o, args) =>
        {
            Dispatcher.BeginInvoke(() =>
            {
                ConsoleControl.Enabled = true;
            });
        };
        client.Disconnected += (o, args) =>
        {
            Dispatcher.BeginInvoke(() =>
            {
                ConsoleControl.Enabled = false;
            });

            if (RefreshTimer == null)
            {
                RefreshTimer = new Timer(1000);
                RefreshTimer.Elapsed += RefreshTimer_Elapsed;
            }
            RefreshTimer.Start();
        };
        client.ExceptionOccurred += (o, args) =>
        {

        };
        if (!client.IsConnecting)
        {
            client.ConnectAsync();
        }
        _client = client;

        _creatingClient = false;
    }
    private void RefreshTimer_Elapsed(object? sender, ElapsedEventArgs e)
    {
        if (_client is null) return;

        if (!_client.IsConnected)
        {
            if (!_client.IsConnecting)
            {
                _client.ConnectAsync();
            }
        }
        else
        {
            RefreshTimer?.Stop();
        }
    }

    private string GetPipeName()
    {
        return Settings.GetServiceName();
    }

    private void LoadSettings()
    {
        Settings = PRSLicensingService.GetConfiguration().Load();
        ServiceName.Text = Settings.ServiceName;
    }

    private void SaveSettings()
    {
        PRSLicensingService.GetConfiguration().Save(Settings);
    }

    private void Install()
    {
        var username = GetProperties().Username;
        string? password = null;
        if (!string.IsNullOrWhiteSpace(username))
        {
            var passwordEditor = new PasswordDialog(string.Format("Enter password for {0}", username));
            if(passwordEditor.ShowDialog() == true)
            {
                password = passwordEditor.Password;
            }
            else
            {
                password = null;
            }
        }
        else
        {
            username = null;
        }
        PRSServiceInstaller.InstallService(
            Settings.GetServiceName(),
            "PRS Licensing Service",
            Settings.ServiceName,
            username,
            password);
    }

    private void InstallButton_Click(object sender, RoutedEventArgs e)
    {
        if (PRSServiceInstaller.IsInstalled(Settings.GetServiceName()))
        {
            Progress.ShowModal("Uninstalling Service", (progress) =>
            {
                PRSServiceInstaller.UninstallService(Settings.GetServiceName());
            });
        }
        else
        {
            Progress.ShowModal("Installing Service", (progress) =>
            {
                Install();
            });
        }
        RefreshStatus();
    }

    private void StartButton_Click(object sender, RoutedEventArgs e)
    {
        if (PRSServiceInstaller.IsRunning(Settings.GetServiceName()))
        {
            Progress.ShowModal("Stopping Service", (progress) =>
            {
                PRSServiceInstaller.StopService(Settings.GetServiceName());
            });
        }
        else
        {
            Progress.ShowModal("Starting Service", (progress) =>
            {
                PRSServiceInstaller.StartService(Settings.GetServiceName());
            });
        }
        RefreshStatus();
    }

    private LicensingEngineProperties GetProperties()
    {
        var properties = Serialization.Deserialize<LicensingEngineProperties>(Settings.Properties) ?? new LicensingEngineProperties();
        properties.Name = Settings.ServiceName;
        return properties;
    }

    private void EditButton_Click(object sender, RoutedEventArgs e)
    {
        var grid = new DynamicItemsListGrid<LicensingEngineProperties>();
        Settings.CommitChanges();
        var properties = GetProperties();
        if(grid.EditItems(new LicensingEngineProperties[] { properties }))
        {
            Settings.Properties = Serialization.Serialize(properties);
            Settings.ServiceName = properties.Name;

            if (Settings.IsChanged())
            {
                if(Settings.HasOriginalValue(x => x.ServiceName) || properties.HasOriginalValue(x => x.Username))
                {
                    var oldService = LicensingConfiguration.GetServiceName(Settings.GetOriginalValue(x => x.ServiceName));
                    if (PRSServiceInstaller.IsInstalled(oldService))
                    {
                        Progress.ShowModal("Modifying Service", (progress) =>
                        {
                            PRSServiceInstaller.UninstallService(oldService);
                            Install();
                        });
                    }
                }
                SaveSettings();
                ServiceName.Text = Settings.ServiceName;
                RefreshStatus();
            }
        }
    }

    protected void OnPropertyChanged([CallerMemberName] string? propertyName = null)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
}