using System;
using System.Collections.Generic;
using System.IO.Ports;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using Comal.Classes;
using InABox.Clients;
using InABox.Core;
using InABox.Wpf;

namespace PRSDesktop
{
    /// <summary>
    ///     Interaction logic for DigitalKeyForm.xaml
    /// </summary>
    public partial class DigitalKeyForm : ThemableWindow
    {
        private readonly DigitalKey _key;
        private string _macaddress = "";
        private string _service = "";
        private string _characteristic = "";

        private readonly string[] otherkeys = { };

        private SerialPort port;

        public DigitalKeyForm(DigitalKey key)
        {
            _key = key;

            otherkeys = new Client<DigitalKey>().Query(
                new Filter<DigitalKey>(x => x.ID).IsNotEqualTo(_key.ID),
                new Columns<DigitalKey>(x => x.MacAddress)
            ).Rows.Select(r => r.Get<DigitalKey, string>(c => c.MacAddress)).ToArray();

            InitializeComponent();
            var names = new List<string> { "" };
            names.AddRange(SerialPort.GetPortNames());
            Ports.ItemsSource = names;
            if (names.Count == 2)
                Ports.SelectedIndex = 1;
        }

        private void DisposeSerialPort()
        {
            if (port != null)
            {
                port.Close();
                port.Dispose();
                port = null;
            }
        }

        private void CreateSerialPort(string name)
        {
            if (string.IsNullOrWhiteSpace(name))
                return;

            DisposeSerialPort();
            port = new SerialPort
            {
                PortName = name,
                BaudRate = 9600,
                Parity = Parity.None,
                DataBits = 8,
                StopBits = StopBits.One,
                ReadTimeout = 1000
            };
            try
            {
                port.Open();
            }
            catch (Exception e)
            {
                MessageBox.Show(string.Format("Unable to Open {0}\n\n{1}", name, e.Message));
                DisposeSerialPort();
            }
        }

        private void Ports_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            CreateSerialPort(Ports.SelectedValue.ToString());
            if (port == null)
            {
                Duplicate.Visibility = Visibility.Collapsed;
                OK.Visibility = Visibility.Collapsed;
                Connect.Content = "Select a valid Serial Port!";
                return;
            }

            port.WriteLine("");
            var junk = port.ReadLine();
            port.WriteLine("MODEL");
            var model = port.ReadLine().Replace("\r", "").Replace("\n", "");
            Model.Text = model;
            port.WriteLine("ADDRESS");
            _macaddress = port.ReadLine().Replace("\r", "").Replace("\n", "").ToUpper();
            MacAddress.Text = _macaddress;
            port.WriteLine("SERVICE");
            _service = port.ReadLine().Replace("\r", "").Replace("\n", "").ToUpper();
            port.WriteLine("CHARACTERISTIC");
            _characteristic = port.ReadLine().Replace("\r", "").Replace("\n", "").ToUpper();

            Duplicate.Visibility = otherkeys.Contains(_macaddress) ? Visibility.Visible : Visibility.Collapsed;
            OK.Visibility = otherkeys.Contains(_macaddress) ? Visibility.Collapsed : Visibility.Visible;
            Connect.IsEnabled = !otherkeys.Contains(_macaddress);
            Connect.Content = otherkeys.Contains(_macaddress) ? "Key Already Exists!" : "Connect";
        }

        private void Connect_Click(object sender, RoutedEventArgs e)
        {
            var key = Guid.NewGuid().ToString();
            port.WriteLine(string.Format("PRIVATE {0}", key));
            var confirm = port.ReadLine().Replace("\r", "").Replace("\n", "");
            if (string.Equals(confirm, "OK"))
            {
                _key.Model = Model.Text;
                _key.MacAddress = _macaddress;
                _key.Service = _service;
                _key.Characteristic = _characteristic;
                _key.Key = key;

                DisposeSerialPort();
                DialogResult = true;
            }
        }
    }
}