using Microsoft.Extensions.Logging;
using PARR.DAL.Models;
using System.Globalization;

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

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

            bool isSuccess = true;


            return isSuccess;
        }

        public Template? ParseString(string str)
        {
            //TODO: а если формат нет тот? Все будет ок?

            //TODO: 
            var splittedContent = str.Split(";");
            if (splittedContent.Length != 8) return null;

            var ek = splittedContent[0].Trim().Substring(1, splittedContent[0].Length - 2);
            var isActive = splittedContent[1].Trim().Substring(1, splittedContent[1].Length - 2);
            var workGroup = splittedContent[2].Trim().Substring(1, splittedContent[2].Length - 2);
            var shortDescription = splittedContent[3].Trim().Substring(1, splittedContent[3].Length - 2);
            var category = splittedContent[4].Trim().Substring(1, splittedContent[4].Length - 2);
            var ekDateCreatedStr = splittedContent[5].Trim().Substring(1, splittedContent[5].Length - 2);
            var process = splittedContent[6].Trim().Substring(1, splittedContent[6].Length - 2);
            var subProcess = splittedContent[7].Trim().Substring(1, splittedContent[7].Length - 2);

            //logger.LogInformation($"Получено сообщение: {ek}");
            var template = new Template
            {
                Id = Guid.NewGuid(),
                DateCreated = DateTime.UtcNow,
                EK = ek,
                isActive = bool.Parse(isActive),
                WorkGroup = workGroup,
                ShortDescription = shortDescription,
                Category = category,
                //todo: EKDateCreated
                EKDateCreated = ConvertDateFromStr(ekDateCreatedStr),
                //EKDateCreated = null,
                Process = process,
                SubProcess = subProcess,
                Status = "Checking"
            };

            //bool isSuccess = true;


            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;
        }
    }
}