using Dfs.WayneChina.IMisPlus.Models;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Xml.Linq;

namespace Dfs.WayneChina.IMisPlus
{
    /// <summary>
    /// Manages the xml settings part of the legacy iFuel forecourt configuration.
    /// </summary>
    public class ForecourtXml
    {
        #region Fields

        private XDocument xdoc;

        #endregion

        #region Properties

        public ForecourtConfig ForecourtConfig { get; set; }

        #endregion

        public bool Load(string fileName)
        {
            xdoc = XDocument.Load(fileName);
            return ParseConfig();
        }

        public bool Parse(string xml)
        {
            xdoc = XDocument.Parse(xml);
            return ParseConfig();
        }

        private bool ParseConfig()
        {
            var configRoot = xdoc.Document.Element("ForecourtConfig");

            //Parse <ForecourtConfig/>
            ForecourtConfig = new ForecourtConfig();
            ForecourtConfig.CurrentVersion = configRoot.Attribute("Version").Value;

            Console.WriteLine(configRoot.Attribute("Version").Value);

            //Parse <TerminalConfig/>
            var terminalConfig = configRoot.Descendants("TerminalConfig").First();
            var terminals = from term in terminalConfig.Descendants("Terminal")
                            select new Terminal
                            {
                                Id = Convert.ToByte(term.Attribute("Id").Value),
                                PayMode = Convert.ToByte(term.Attribute("PayMode").Value),
                                ProtocolType = Convert.ToByte(term.Attribute("ProtocolType").Value),
                                Address = term.Attribute("Address").Value
                            };

            ForecourtConfig.Terminals = terminals.ToList();

            foreach (var item in ForecourtConfig.Terminals)
            {
                Console.WriteLine("Terminal Id: {0}, Pay mode: {1}, Protocol type: {2}, Address: {3}",
                    item.Id, item.PayMode, item.ProtocolType, item.Address);
            }


            //Parse <DispenserConfig/>
            var dispenserConfig = configRoot.Descendants("DispenserConfig").First();
            var disps = from disp in dispenserConfig.Descendants("Dispenser")
                        select new Dispenser
                        {
                            DispNo = disp.Attribute("DispNo").Value,
                            DispType = disp.Attribute("DispType").Value,
                            Manufacturer = disp.Attribute("Manufacturer").Value,
                            ProtocolType = Convert.ToByte(disp.Attribute("Protocol").Value),
                            Address = disp.Attribute("Address").Value,
                            Life = Convert.ToUInt16(disp.Attribute("Life").Value),
                            State = disp.Attribute("State").Value,
                            ManufacturingNo = disp.Attribute("ManufacturingNo").Value,
                            DateOfManufacture = GetFormattedDate(disp.Attribute("DateOfManufacture").Value)
                        };

            ForecourtConfig.Dispensers = disps.ToList();

            foreach (var item in ForecourtConfig.Dispensers)
            {
                Console.WriteLine("Dispenser number: {0}, type: {1}, manufacturer: {2}, protocol type: {3}, address: {4}, life: {5}, state: {6}, date of manufacture: {7} nozzle count: {8}",
                    item.DispNo, item.DispType, item.Manufacturer, item.ProtocolType, item.Address, item.Life, item.State, item.DateOfManufacture, item.NozzleCount);
            }

            //Parse <PumpConfig/>
            var pumpConfig = configRoot.Descendants("PumpConfig").First();
            var pumps = from pump in pumpConfig.Descendants("Pump")
                        select new Pump
                        {
                            Id = Convert.ToByte(pump.Attribute("Id").Value),
                            PosId = Convert.ToByte(pump.Attribute("PosId").Value),
                            DispType = Convert.ToByte(pump.Attribute("DispType").Value),
                            DispTypeName = pump.Attribute("DispTypeName").Value,
                            TankId = Convert.ToByte(pump.Attribute("TankId").Value),
                            AppProtocol = Convert.ToUInt16(pump.Attribute("AppProtocol").Value),
                            ProtocolType = Convert.ToByte(pump.Attribute("ProtocolType").Value),
                            Port = pump.Attribute("Port").Value,
                            SerialPort = Convert.ToUInt16(pump.Attribute("SerialPort").Value),
                            Node = Convert.ToUInt16(pump.Attribute("Node").Value),
                            SubAddress = Convert.ToByte(pump.Attribute("SubAddress").Value),
                            Mode = Convert.ToByte(pump.Attribute("Mode").Value),
                            PayStackSize = Convert.ToByte(pump.Attribute("PayStack").Value),
                            CheckOutMode = Convert.ToByte(pump.Attribute("CheckOutMode").Value),
                            MaxAmount = Convert.ToUInt32(pump.Attribute("MaxAmount").Value),
                            MaxVolume = Convert.ToUInt32(pump.Attribute("MaxVolume").Value),
                            Nozzles = (from noz in pump.Descendants("Nozzle")
                                       select new Nozzle
                                       {
                                           Id = Convert.ToByte(noz.Attribute("Id").Value),
                                           PhysicalId = Convert.ToByte(noz.Attribute("PhysicalId").Value),
                                           DispNo = noz.Attribute("DispNo").Value,
                                           SiteNozzleNo = Convert.ToUInt16(noz.Attribute("SiteNozzleNo").Value),
                                           TankId = Convert.ToByte(noz.Attribute("TankId").Value),
                                           ProductCode = noz.Attribute("ProductCode").Value,
                                           State = noz.Attribute("State").Value,
                                           VehicleIdReaderAddress = noz.Attribute("VehicleIdReaderAddress").Value
                                       }).ToList()
                        };

            ForecourtConfig.Pumps = pumps.ToList();

            foreach (var p in ForecourtConfig.Pumps)
            {
                Console.WriteLine("Pump Id: {0}", p.Id);

                foreach (var n in p.Nozzles)
                {
                    Console.WriteLine("Nozzle Id: {0}", n.Id);
                }
            }

            //Parse <TankConfig/>
            var tankConfig = configRoot.Descendants("TankConfig").First();
            var tanks = from tank in tankConfig.Descendants("Tank")
                        select new Tank
                        {
                            Id = Convert.ToByte(tank.Attribute("TankId")),
                        };

            foreach (var t in tanks)
            {
                Console.WriteLine("Tank Id: {0}, Serial number: {1}", t.Id, "");
            }

            //Parse <FuelConfig/>
            var fuelConfig = configRoot.Descendants("FuelConfig").First();
            var fuels = from fuel in fuelConfig.Descendants("Fuel")
                        select new Fuel
                        {
                            Id = Convert.ToInt32(fuel.Attribute("Id").Value),
                            ProductCode = fuel.Attribute("ProductCode").Value,
                            ClassNo = fuel.Attribute("ClassNo").Value,
                            Name = fuel.Attribute("Name").Value,
                            Price = Convert.ToInt32(fuel.Attribute("Price").Value),
                            OldPrice = Convert.ToInt32(fuel.Attribute("OldPrice").Value),
                            UnitMeasure = fuel.Attribute("UnitMeasure").Value,
                            Storage = Convert.ToInt32(fuel.Attribute("Storage").Value),
                            TaxPer = Convert.ToInt32(fuel.Attribute("TaxPer").Value),
                            Density = fuel.Attribute("Density").Value
                        };

            ForecourtConfig.Fuels = fuels.ToList();

            return true;
        }

        public bool AddNozzle(Nozzle nozzle)
        {
            return true;
        }

        public bool AddPump(Pump pump)
        {
            if (pump == null)
                return false;

            if (ForecourtConfig.Pumps.Any(p => p.Id == pump.Id))
                return false;

            ForecourtConfig.Pumps.Add(pump);

            return true;
        }

        private DateTime GetFormattedDate(string dateString)
        {
            DateTime dateOfManufacture;
            string format = "yyyy-MM-dd";

            bool result =
                DateTime.TryParseExact(dateString, format, CultureInfo.InvariantCulture, DateTimeStyles.None, out dateOfManufacture);

            return result ? dateOfManufacture : DateTime.MinValue;
        }
    }
}