using CMS_CORE_Library.Models;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Web.Http;
using Thermo.Active.Model.DTOModels;
using Thermo.Active.NC;
using static Thermo.Active.Config.ServerConfig;
using static Thermo.Active.Model.Constants;
using static Thermo.Active.Utils.LanguageController;

namespace Thermo.Active.Controllers.WebApi
{
    [RoutePrefix("api/language")]
    public class LanguageController : ApiController
    {
        /// <summary>
        /// Oggetto adapter condiviso da WebAPI
        /// </summary>
        protected static NcAdapter ncAdapter = new NcAdapter();

        [Route("languages"), HttpGet]
        public IHttpActionResult GetLanguageList()
        {
            List<DTOLanguageModel> availableLanguages = GetLanguageListFromDirectory();
            if (availableLanguages == null)
                return NotFound();

            ICollection<CultureInfo> cultureInfos = new List<CultureInfo>();

            // Get nc available language 
            CmsError libraryError = ncAdapter.numericalControl.NC_GetAvailableLanguages(ref cultureInfos);
            if (libraryError.IsError())
                return BadRequest(libraryError.localizationKey);
            // Filter available language with
            availableLanguages = availableLanguages.Where(x => cultureInfos.Any(y => y.TwoLetterISOLanguageName == x.IsoId)).ToList();

            return Ok(availableLanguages);
        }

        [Route("{language}"), HttpGet()]
        public IHttpActionResult GetTranslations(string language)
        {
            if (!IsValidLanguage(language))
                return BadRequest("Language not exists");

            if (!LanguageIsAvailable(language))
                return NotFound();

            Dictionary<string, string> translations = GetTranslationsFromFile(language);

            // Get Maintenance, Softkey, Plc Alarm translations
            Dictionary<string, string> maintenanceNames = GetLocalizeMaintenanceName(language);
            Dictionary<string, string> softKeysNames = GetLocalizedSoftKeysNames(language);
            Dictionary<string, string> alarmsNames = GetPlcAlarmsTranslations(language);
            Dictionary<string, string> headsNames = GetLocalizedHeadsNames(language);


            Dictionary<string, string> scadaTranslations = GetScadaTranslations(language);

            // Concat maintenances dictionary with translations dictionary
            translations = translations.Concat(maintenanceNames).ToDictionary(x => x.Key, x => x.Value);
            // Softkeys
            translations = translations.Concat(softKeysNames).ToDictionary(x => x.Key, x => x.Value);
            // Alarms
            translations = translations.Concat(alarmsNames).ToDictionary(x => x.Key, x => x.Value);
            // Heads
            translations = translations.Concat(headsNames).ToDictionary(x => x.Key, x => x.Value);
            // Scada
            translations = translations.Concat(scadaTranslations).ToDictionary(x => x.Key, x => x.Value);

            if (translations == null)
                return InternalServerError();

            return Ok(translations);
        }

        private static Dictionary<string, string> GetLocalizeMaintenanceName(string language)
        {
            Dictionary<string, string> localizedStrings = new Dictionary<string, string>();

            // Get localized name
            localizedStrings = MaintenancesConfig
                .ToDictionary(
                x => MAINTENANCE_PREFIX_ID + x.Id.ToString(), // Prefix + maintenance id
                x => GetValueFromLocalizationList(x.LocalizedName, language, "Maintenance_" + x.Id)
                );

            // Get localized description
            localizedStrings = localizedStrings.Concat(MaintenancesConfig
                .ToDictionary(
                x => MAINTENANCE_DESC_PREFIX_ID + x.Id.ToString(), // Description Prefix + maintenance id
                x => GetValueFromLocalizationList(x.LocalizedDescription, language, "Maintenance_" + x.Id)
                )).ToDictionary(x => x.Key, x => x.Value);

            return localizedStrings;
        }

        private static Dictionary<string, string> GetLocalizedSoftKeysNames(string language)
        {
            return SoftKeysConfig
                .ToDictionary(
                x => SOFTKEY_PREFIX_ID + x.Id.ToString(), // PREFIX + softkey Id
                x => GetValueFromLocalizationList(x.LocalizedNames, language, "SoftKey_" + x.Id)
                );
        }


        private static Dictionary<string, string> GetLocalizedHeadsNames(string language)
        {
            return HeadsConfig
                .ToDictionary(
                x => SOFTKEY_HEAD_ID + x.Id.ToString(), // PREFIX + softkey Id
                x => GetValueFromLocalizationList(x.LocalizedNames, language, "Head_" + x.Id)
                );
        }


        private static string GetValueFromLocalizationList(Dictionary<string, string> localizedNames, string language, string defaultString)
        {
            // Find text from names by language id
            var value = localizedNames.Where(y => y.Key == language).FirstOrDefault();
            // Set default value
            if (value.Key == null)
                return defaultString;
            else
                return value.Value;
        }

        public static Dictionary<string, string> GetPlcAlarmsTranslations(string language)
        {
            Dictionary<string, string> returnValue = new Dictionary<string, string>();

            Dictionary<int, string> messages = new Dictionary<int, string>();
            // Read data from CN
            ncAdapter.numericalControl.NC_GetTranslatedPlcMessages(language, ref messages); // Avoid checking error because in the worst case "messages" is empty

            // Id start from 1
            for (int i = 1; i <= 1024; i++)
            {
                // Get configurated alarms
                var tmpAlarmConfig = InitialAlarmsConfig.Where(x => x.PlcId == i).FirstOrDefault();
                // Default string
                string message = string.Format(NOT_CONFIGURATED_ALARM_MESSAGE, i);
                // If is configurated
                if (tmpAlarmConfig != null)
                {
                    // Find translated string
                    message = messages.Where(x => x.Key == tmpAlarmConfig.AlarmId).FirstOrDefault().Value;
                    if (message == null)
                        message = string.Format(NOT_FOUND_ALARM_MESSAGE, i);
                }
                // Add to dictionary
                returnValue.Add(
                        ALARM_PREFIX + i,
                        message
                        );
            }
            return returnValue;
        }

        private static Dictionary<string, string> GetScadaTranslations(string language)
        {
            Dictionary<string, string> translatedNames = new Dictionary<string, string>();

            // Loop throught labels Scada -> Layers -> Labels
            foreach (var scada in ProductionScadaSchema.Concat(ConfiguredScadaSchema))
            {
                foreach (var layer in scada.Layers)
                {
                    foreach (var label in layer.Labels)
                    {
                        // Find selected language
                        var translatedValue = label.Label.TextContents?.Where(y => y.LangKey == language).FirstOrDefault();
                        if (translatedValue != null)
                            translatedNames.Add("scada_label_" + label.Id, translatedValue.TextContent);
                        else
                            // default value
                            translatedNames.Add("scada_label_" + label.Id, "scada_label_" + label.Id);
                    }

                    foreach (var button in layer.Buttons)
                    {
                        // Find selected language
                        var translatedValue = button.Label.TextContents.Where(y => y.LangKey == language).FirstOrDefault();
                        if (translatedValue != null)
                            translatedNames.Add("scada_button_" + button.Id, translatedValue.TextContent);
                        else
                            // default value
                            translatedNames.Add("scada_button_" + button.Id, "scada_button_" + button.Id);
                    }
                }
            }

            return translatedNames;
        }
    }
}