using Microsoft.Extensions.Logging;
using PARR.DAL.Contracts;
using PARR.EsppTemplateSync.Domain;
using PARR.EsppTemplateSync.Settings;
using System.Globalization;

namespace PARR.EsppTemplateSync.Services
{
    internal class ParserService : IParserService
    {
        private readonly ILogger<ParserService> logger;
        private readonly GlobalSettings globalSettings;
        private readonly SettingsFromDb settingsFromDb;

        public ParserService(
            ILogger<ParserService> logger,
            GlobalSettings globalSettings,
            SettingsFromDb settingsFromDb
            )
        {
            this.logger = logger;
            this.globalSettings = globalSettings;
            this.settingsFromDb = settingsFromDb;
        }
        public async Task<bool> ParseFileAsync(string path)
        {
            //TODO: 

            bool isSuccess = true;


            return isSuccess;
        }

        public EsppTemplate? ParseString(string str)
        {
            // TODO: а если формат нет тот? Все будет ок?
            var splittedContent = str.Split(globalSettings.ParsingSeparator);
            if (splittedContent.Length != 17)
            {
                return null;
            }

            //var name = splittedContent[0].Trim().Substring(1, splittedContent[0].Length - 2);
            var name = splittedContent[0].Trim();

            CultureInfo currentCulture = Thread.CurrentThread.CurrentCulture;
            if (!string.IsNullOrEmpty(settingsFromDb.TemplatePrefixName)
                && !name.StartsWith(settingsFromDb.TemplatePrefixName, true, currentCulture)
                )
            {
                logger.LogWarning($"Имя шаблона не соответствует обязательному префиксу({settingsFromDb.TemplatePrefixName}). Шаблон {name} игнорирован");
                return null;

            }

            if (!bool.TryParse(splittedContent[1].Trim(), out var isActive))
                isActive = false;
            var workGroup = splittedContent[2].Trim();
            var shortDescription = splittedContent[3].Trim();
            var category = splittedContent[4].Trim();
            var responseArea = splittedContent[5].Trim();
            var duration = splittedContent[6].Trim();
            var ek = splittedContent[7].Trim();
            var initiator = splittedContent[8].Trim();

            var fullDescription = splittedContent[9].Trim();
            var closingCode = splittedContent[10].Trim();
            var solution = splittedContent[11].Trim();
            var process = splittedContent[12].Trim();
            var subProcess = splittedContent[13].Trim();
            var tnk = splittedContent[14].Trim();
            var work = splittedContent[15].Trim();
            var worker = splittedContent[16].Trim();

            var template = new EsppTemplate
            {
                Name = name,
                IsActive = isActive,
                WorkGroup = workGroup,
                ShortDescription = shortDescription,
                //Category = category,
                ResponseArea = responseArea,
                Duration = duration,
                EK = ek,
                //Initiator = initiator,
                FullDescription = fullDescription,
                //ClosingCode = closingCode,
                Solution = solution,
                Process = process,
                SubProcess = subProcess,
                TNK = tnk,
                Work = work,
                //Worker = worker

            };

            return template;
        }



        private DateTimeOffset? ConvertDateFromStr(string dateString)
        {
            var format = "dd/MM/yy HH:mm:ss";
            var provider = CultureInfo.CurrentCulture;
            try
            {
                var result = DateTimeOffset.ParseExact(dateString, format, provider).ToOffset(new TimeSpan(0));
                logger.LogInformation($"{dateString} было преобразовано в {result.ToString()}.");
                return result;
            }
            catch (FormatException)
            {
                logger.LogWarning($"{dateString} имеет некоррктный формат для преобразование в DateTimeOffset");
            }
            return null;
        }
    }


    // dll

    //public delegate Dt CustomParserHandlerDelegate<Dt>(string str);

    //public class Converter
    //{
    //    public T ParseString<T>(string str, CustomParserHandlerDelegate<T> customParser)
    //    {
    //        var obj = customParser(str);

    //        return obj;
    //    }
    //}

    //public class RunConverter
    //{
    //   public void Run<T>(CustomParserHandlerDelegate<T> customParser)
    //    {
    //        var conv = new Converter();
    //        //var obj = conv.ParseString("sdfsdfsdf", SuperParser);
    //        var obj = conv.ParseString("sdfsdfsdf", customParser);
    //    }
    //}


    ////---
    //public class Xxx
    //{
    //    void Test()
    //    {
    //        var rc = new RunConverter();
    //        rc.Run(SuperParser);
    //    }


    //    Model1 SuperParser(string str)
    //    {
    //        // custom logic

    //        return new Model1 { Field = str };
    //    }
    //}


    //public class Model1
    //{
    //    public string Field { get; set; } = "111";
    //}
}