using System;
using System.Collections.Generic;
using System.Data;
using System.Globalization;
using System.IO;
using CsvHelper;
using CsvHelper.Configuration;

namespace PriorBankParser
{
    public class SectionParser
    {
        public enum SectionType
        {
            AccountInfo,
            StatementDetails,
            ContractOperations,
            ContractLocked,
            ContractTotal,
            StatementTotal
        }

        public SectionParseResultDto Parse(string filePath)
        {
            var result = new SectionParseResultDto();
            var transactions = new List<TransactionInfoDto>();
            result.Transactions = transactions;

            using var reader = new StreamReader(filePath);
            using var csv = new CsvReader(reader, CultureInfo.InvariantCulture);
            csv.Configuration.HasHeaderRecord = false;
            csv.Configuration.RegisterClassMap<TransactionInfoDtoMap>();
            //csv.Configuration.

            var currentSection = SectionType.AccountInfo;
            var contractName = string.Empty;

            while (csv.Read())
            {
                var field = csv.GetField(0);
                if (field.Equals(Constants.SectionNames.OperationSectionPrefix))
                {
                    currentSection = SectionType.StatementTotal;
                    contractName = field.Replace(Constants.SectionNames.OperationSectionPrefix, string.Empty);
                    continue;
                }

                //switch (currentSection)
                //{
                //    case "FooId":
                //        fooRecords.Add(csv.GetRecord<Foo>());
                //        break;
                //    case "BarId":
                //        barRecords.Add(csv.GetRecord<Bar>());
                //        break;
                //    default:
                //        throw new InvalidOperationException("Unknown record type.");
                //}
            }

            return result;
        }


    }

    public sealed class TransactionInfoDtoMap : ClassMap<TransactionInfoDto>
    {
        public TransactionInfoDtoMap()
        {
            Map(m => m.TransactionDate).Name("Дата транзакции");
            Map(m => m.OperationName).Name("Операция");
            Map(m => m.Amount).Name("Сумма");
            Map(m => m.Currency).Name("Валюта");
            Map(m => m.OperationDate).Name("Дата операции по счету");
            Map(m => m.Commission).Name("Комиссия/Money-back");
            Map(m => m.AccountTurnover).Name("Обороты по счету");
            Map(m => m.DigitalCard).Name("Цифровая карта");
            Map(m => m.OperationCategory).Name("Категория операции");
        }
    }

}