using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Threading.Tasks;
using System.Windows;
using InABox.Clients;
using InABox.Core;
using InABox.DynamicGrid;
using InABox.Rpc;
using PRSServices;

namespace PRSServer
{

    public class ServiceStatusEntry : BaseObject
    {
        [TextBoxEditor(Visible=Visible.Default)]
        [EditorSequence(1)]
        public String Domain { get; set; }
        
        [TextBoxEditor(Visible=Visible.Default)]
        [EditorSequence(2)]
        public String IPAddress { get; set; }
        
        [NullEditor]
        public String Port { get; set; }
        
        [EnumLookupEditor(typeof(PortType))]
        public PortType Type { get; set; }
        
        [EnumLookupEditor(typeof(PortState))]
        public PortState State { get; set; }
    }
    
    public class StatusGrid : DynamicItemsListGrid<ServiceStatusEntry>
    {
        public IEnumerable<Server> Servers { get; set; }

        public StatusGrid()
        {
            HeaderHeight = 125;
        }
        
        protected override DynamicGridColumns LoadColumns()
        {
            ActionColumns.Clear();
            foreach (var server in Servers)
                ActionColumns.Add(new DynamicTextColumn(ServerStatus) { HeaderText = $"{server.Name} ({server.Type})", VerticalHeader = true, Width = 40});
            return base.LoadColumns();
        }

        private string? ServerStatus(CoreRow? arg)
        {
            return "???";
        }
    }
    
    public partial class ServiceStatus : Window
    {

        private List<RpcClientPipeTransport> _pipes = new List<RpcClientPipeTransport>();
        
        private String[] _domains;
        private Server[] _servers;

        private List<ServiceStatusEntry> _statuses = new List<ServiceStatusEntry>();
        
        public ServiceStatus(IEnumerable<String> domains, IEnumerable<Server> servers)
        {
            _domains = domains.ToArray();
            _servers = servers.ToArray();
            InitializeComponent();
            StatusGrid.Servers = _servers;
            CheckDomains();
            StatusGrid.Items = _statuses;
            StatusGrid.Refresh(true, true);
            GetPorts(servers);
        }

        private void CheckDomains()
        {
            foreach (var domain in _domains)
            {
                IPAddress[] addresses;

                try
                {
                    Messages.Items.Add($"Resolving {domain}!");
                    addresses = Dns.GetHostAddresses(domain, AddressFamily.InterNetwork);
                    if (addresses.Length > 0)
                    {
                        foreach (var address in addresses)
                            _statuses.Add(new ServiceStatusEntry() { Domain = domain, IPAddress = address.ToString() });
                        Messages.Items.Add($"{domain} resolves to {String.Join(", ", addresses.Select(x => x.ToString()))}");
                    }
                    else
                    {
                        _statuses.Add(new ServiceStatusEntry() { Domain = domain, IPAddress = "No Address Found" });
                        Messages.Items.Add($"{domain} canot be resolved!");
                    }
                }
                catch (Exception e)
                {
                    _statuses.Add(new ServiceStatusEntry() { Domain = domain, IPAddress = "DNS Resolution Failure" });
                    Messages.Items.Add($"Exception while resolving {domain} -> {e.Message}");
                }
            }
        }

        bool CheckDatabase(string domain, int port)
        {
            return new RestClient<User>($"{domain}:{port}").Ping();
        }

        private void GetPorts(IEnumerable<Server> servers)
        {
            foreach (var server in servers)
            {
                var manager = new RpcClientPipeTransport($"{server.Key}M");
                manager.OnOpen += (o,e) => Task.Run(() =>
                {
                    Dispatcher.Invoke(() => { Messages.Items.Add("Connected to Server"); });
                    //while (!manager.Disconnected)
                    //{
                        try
                        {
                            var result = manager.Send<PortStatusCommand, PortStatusParameters, PortStatusResult>(new PortStatusParameters());
                            foreach (var port in result.Ports)
                            {
                                Dispatcher.Invoke(() =>
                                {
                                    Messages.Items.Add($"{server.Key}: {port.Type}({port.Port}) -> {port.State}");
                                    
                                    foreach (var domain in _domains)
                                    {
                                        if (port.Type == PortType.Database)
                                            Messages.Items.Add($"Database {domain}:{port.Port} -> {CheckDatabase(domain,port.Port)}");
                                    }
                                });
                            }
                        }
                        catch (Exception err)
                        {
                            Dispatcher.Invoke(() => { Messages.Items.Add(err.Message); });
                        }

                    //    Thread.Sleep(1000);
                    //}
                });
                _pipes.Add(manager);
            }
        }

        private void ServiceStatus_OnClosing(object? sender, CancelEventArgs e)
        {
            while (_pipes.Count > 0)
            {
                _pipes[0].Dispose();
                _pipes.RemoveAt(0);
            }
        }
    }
}