using Step.Model.ConfigModels;
using Step.Utils;
using static Step.Utils.SupportFunctions;
using System;
using System.Globalization;
using System.Linq;
using System.Xml.Linq;
using System.Xml.Schema;
using static Step.Config.ServerConfig;
using static Step.Model.Constants;

namespace Step.Config
{
    public static class ServerConfigController
    {
        public static void ReadStartupConfig()
        {
            try
            {
                ReadServerConfig();
                ReadAreaConfig();
                ReadMaintenancesConfig();
                ReadSoftKeysConfig();
                ReadAlarmsConfig();
                ReadHeadsConfig();
            }
            catch (Exception ex)
            {
                ExceptionManager.Manage(ex);
            }
        }

        private static XDocument GetXmlHandlerWithValidator(string configSchemaFilePath, string configFilePath)
        {
            // Create new instance
            XmlSchemaSet readerSettings = new XmlSchemaSet();
            // Add Schema
            readerSettings.Add(null, BASE_PATH + "\\" + configSchemaFilePath);

            // Open file reader
            XDocument xmlConfigFile = XDocument.Load(BASE_PATH + "\\" + configFilePath);
            // Validate file
            xmlConfigFile.Validate(readerSettings, ValidationHandler);

            return xmlConfigFile;
        }

        private static void SetAreaValueByName(XElement element)
        {
            // Choose which area to be set
            switch (element.Name.ToString())
            {
                case AREAS.PRODUCTION_KEY:
                    SetAreaValue(ref ProductionConfig, element);
                    break;

                case AREAS.TOOLING_KEY:
                    SetAreaValue(ref ToolingConfig, element);
                    break;

                case AREAS.REPORT_KEY:
                    SetAreaValue(ref ReportConfig, element);
                    break;

                case AREAS.ALARMS_KEY:
                    SetAreaValue(ref AlarmsConfig, element);
                    break;

                case AREAS.MAINTENANCE_KEY:
                    SetAreaValue(ref MaintenanceConfig, element);
                    break;

                case AREAS.UTILITIES_KEY:
                    SetAreaValue(ref UtilitiesConfig, element);
                    break;

                case AREAS.SCADA_KEY:
                    SetAreaValue(ref ScadaConfig, element);
                    break;
            }
        }

        private static void SetAreaValue(ref AreasConfigModel areasConfig, XElement element)
        {
            // Set area model with xml data
            areasConfig = new AreasConfigModel()
            {
                Name = element.Name.ToString(),
                Enabled = Convert.ToBoolean(element.Element("enabled").Value),
                AllowExternalBrowser = Convert.ToBoolean(element.Element("allowExternalBrowser").Value),
                NcNeeded = Convert.ToBoolean(element.Element("ncNeeded").Value)
            };
        }

        private static void ValidationHandler(object sender, ValidationEventArgs e)
        {
            if (e.Severity == XmlSeverityType.Warning)
            {
                ExceptionManager.Manage(ERROR_LEVEL.WARNING, e.Message);
            }
            else if (e.Severity == XmlSeverityType.Error)
            {
                ExceptionManager.Manage(ERROR_LEVEL.FATAL, e.Message);
            }
        }

        public static bool CheckAreaStatus(string areaName)
        {   // Get Area status ( enabled field) by name
            switch (areaName)
            {
                case AREAS.PRODUCTION_KEY:
                    return ProductionConfig.Enabled;

                case AREAS.TOOLING_KEY:
                    return ToolingConfig.Enabled;

                case AREAS.REPORT_KEY:
                    return ProductionConfig.Enabled;

                case AREAS.ALARMS_KEY:
                    return AlarmsConfig.Enabled;

                case AREAS.MAINTENANCE_KEY:
                    return MaintenanceConfig.Enabled;

                case AREAS.UTILITIES_KEY:
                    return UtilitiesConfig.Enabled;

                case AREAS.SCADA_KEY:
                    return ScadaConfig.Enabled;

                case AREAS.GENERAL_KEY:
                case AREAS.UNDER_HOOD:
                    return true;

                default:
                    return false;
            }
        }

        #region Read config from file

        public static void ReadServerConfig()
        {
            // Get server file handler
            XDocument xmlConfigFile = GetXmlHandlerWithValidator(SERVER_CONFIG_SCHEMA_PATH, SERVER_CONFIG_PATH);

            // Read nc Config with LINQ
            NcConfig = xmlConfigFile
                .Descendants(NC_CONFIG_KEY)
                .Select(x => new NcConfigModel()
                {
                    NcVendor = x.Element("ncVendor").Value,
                    showNcHMI = Convert.ToBoolean(x.Element("showNcHMI").Value),
                    NcIpAddress = x.Element("ncIpAddress").Value,
                    NcPort = Convert.ToUInt16(x.Element("ncPort").Value),
                    NcName = x.Element("machineModel").Value
                }).FirstOrDefault();

            // Read server config with LINQ and save into static config
            ServerStartupConfig = xmlConfigFile
                .Descendants(SERVER_CONFIG_KEY)
                .Select(x => new ServerConfigModel()
                {   // Set server config model data
                    Language = CultureInfo.CreateSpecificCulture(x.Element("language").Value),
                    ServerAddress = x.Element("serverAddress").Value,
                    ServerPort = Convert.ToInt32(x.Element("serverPort").Value),
                    EnableDirectoryBrowsing = Convert.ToBoolean(x.Element("enableDirectoryBrowsing").Value),
                    DatabaseAddress = x.Element("databaseAddress").Value
                }).FirstOrDefault();
        }

        private static void ReadAreaConfig()
        {
            // Get Areas file handler
            XDocument xmlConfigFile = GetXmlHandlerWithValidator(AREAS_CONFIG_SCHEMA_PATH, AREAS_CONFIG_PATH);

            // Read areas config with LINQ
            xmlConfigFile
                .Descendants(AREAS_CONFIG_KEY) // Get areas config node
                .Elements()
                .ToList()
                .ForEach(x => SetAreaValueByName(x)); // Loop through elements
        }

        public static void ReadMaintenancesConfig()
        {
            // Get Maintenances file handler
            XDocument xmlConfigFile = GetXmlHandlerWithValidator(MAINTENANCES_CONFIG_SCHEMA_PATH, MAINTENANCES_CONFIG_PATH);

            MaintenancesConfig = xmlConfigFile
                 .Root
                 .Elements()
                 .ToList()
                 .Select(x =>
                    new MaintenanceConfigModel()
                    {
                        Id = Convert.ToInt32(x.Element("id").Value),
                        LocalizedNames = x.Element("localizedNames").Elements().ToDictionary( // Read names list
                           y => y.Attribute("langKey").Value, y => y.Value
                        ),
                        Intervall = TimeSpan.FromMinutes(Convert.ToDouble(x.Element("interval").Value)),
                        Deadline = DateTime.Parse(x.Element("deadline").Value),
                        Type = x.Element("type").Value,
                        CouterId = Convert.ToInt32(x.Element("counterId").Value)
                    }
                    )
                    .ToList();
        }

        private static void ReadSoftKeysConfig()
        {
            // Get Softkeys
            XDocument xmlConfigFile = GetXmlHandlerWithValidator(SOFTKEYS_CONFIG_SCHEMA_PATH, SOFTKEYS_CONFIG_PATH);
            int id = 1;
            // Read softkey configuration from XML with LINQ
            SoftKeysConfig = xmlConfigFile
                 .Root
                 .Elements()
                 .Where(x => Convert.ToBoolean(x.Element("active").Value) == true) // Only active softkey
                 .Select(x => new SoftKeyConfigModel()
                 {
                     Id = id++, // autoincrement Id
                     PlcId = Convert.ToInt32(x.Element("plcId")?.Value), // If exists
                     IsActive = Convert.ToBoolean(x.Element("active").Value),
                     Category = Convert.ToInt32(x.Element("category").Value),
                     LocalizedNames = x.Element("localizedNames").Elements().ToDictionary( // Read localized names and convert into a dictionary
                           y => y.Attribute("langKey").Value, y => y.Value
                        ),

                     SubKeys = x.Element("subKeys")?.Elements().Select(y => new SubKeysModel() // Populate subkeys if exist
                     {
                         Id = id++,
                         PlcId = Convert.ToInt32(y.Attribute("plcId").Value),
                         Text = y.Value
                     }).ToList(),
                     Type = GetSoftKeyType(x.Name.ToString()),
                     OperatorConfirmationNeeded = Convert.ToBoolean(x.Element("operatorConfirmationNeeded").Value)
                 })
                 .ToList();
        }

        private static void ReadAlarmsConfig()
        {
            XDocument xmlConfigFile = GetXmlHandlerWithValidator(ALARMS_CONFIG_SCHEMA_PATH, ALARMS_CONFIG_PATH);
            // Read alarms config from XML file
            InitialAlarmsConfig = xmlConfigFile
                .Root
                .Elements()
                .Select(x => new AlarmsConfigModel()
                {
                    AlarmId = Convert.ToInt32(x.Element("alarmId").Value),
                    PlcId = Convert.ToInt32(x.Element("plcId").Value),
                    RestoreIsActive = Convert.ToBoolean(x.Element("restoreIsActive").Value)
                })
                .ToList();
        }

        private static void ReadHeadsConfig()
        {
            XDocument xmlConfigFile = GetXmlHandlerWithValidator(HEADS_CONFIG_SCHEMA_PATH, HEADS_CONFIG_PATH);

            int i = 0;
            // Read head config from XML file
            HeadsConfig = xmlConfigFile
                .Root
                .Elements()
                .Select(x => new HeadsConfigModel()
                {
                    Id = i++, // Autoincrement Id
                    Name = x.Element("name").Value,
                    Type = GetHeadType(x.Element("type").Value),
                    WarningLimit = Convert.ToInt16(x.Element("warningLimit").Value),
                    AlarmLimit = Convert.ToInt16(x.Element("alarmLimit").Value),
                })
                .ToList();
        }

        #endregion Read config from file


    }
}