using System.Globalization;
using CsvHelper;
using CsvHelper.Configuration;
using RhSolutions.SkuParser.Models;

namespace RhSolutions.SkuParser.Services;

/// <summary>
/// Парсер артикулов и их количества из файлов *.csv 
/// </summary>
public class CsvParser : ISkuParser
{
	public async Task<IEnumerable<ProductQuantity>> ParseProducts(IFormFile file)
	{
		using MemoryStream memoryStream = new(new byte[file.Length]);
		await file.CopyToAsync(memoryStream);
		memoryStream.Position = 0;
		using StreamReader reader = new(memoryStream);

		var config = new CsvConfiguration(CultureInfo.GetCultureInfo("ru-RU"))
		{
			HasHeaderRecord = false,
		};
		using CsvReader csvReader = new(reader, config);
		
		return csvReader.GetRecords<ProductQuantity>().ToList();
	}
}