DD.WellWorkover.Cloud/AsbCloudInfrastructure/Services/WellOperationImportService.cs

using System;
using System.IO;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using ClosedXML.Excel;
using AsbCloudApp.Data;

namespace AsbCloudInfrastructure.Services
{
    public class WellOperationImportService
    {
        private const string sheetNamePlan = "План";
        private const string sheetNameFact = "Факт";

        public IEnumerable<WellOperationDto> ParseFile(string excelFilePath)
        {
            if (!File.Exists(excelFilePath))
                throw new FileNotFoundException($"Файл {excelFilePath} не найден.");

            using var sourceExcelWorkbook = new XLWorkbook(excelFilePath, XLEventTracking.Disabled);
            
            var sheetPlan = sourceExcelWorkbook.Worksheets.FirstOrDefault(ws => ws.Name == sheetNamePlan);
            if (sheetPlan is null)
                throw new FileFormatException($"Файл {excelFilePath} не не содержит листа {sheetNamePlan}.");
            
            var sheetFact = sourceExcelWorkbook.Worksheets.FirstOrDefault(ws => ws.Name == sheetNameFact);
            if (sheetFact is null)
                throw new FileFormatException($"Файл {excelFilePath} не не содержит листа {sheetNameFact}.");

            var wellOperations = new List<WellOperationDto>();

            return wellOperations;
        }
    }
}