using CsvHelper;
using CsvHelper.Configuration;
using Microsoft.EntityFrameworkCore.Metadata.Internal;
using System.Formats.Asn1;
using System.Globalization;
using System.Text;
using WebAPI.Models;

namespace WebAPI.dataParsers
{
    public class csvParser
    {
        public List<Record> parse(IFormFile file)
        {
            var info = CultureInfo.CurrentCulture;

            List<Record> records = new List<Record>();

            var stream = new StreamReader(file.OpenReadStream());
            string content = stream.ReadToEnd();

            List<string> lines = content.Split("\n").ToList();
            List<List<string>> data = new List<List<string>>();
            foreach (string line in lines)
            {
                data.Add(line.Split(";").ToList());
            }

            for (int i = 1; i < data[0].Count; i++)
            {
                for (int j = 1; j < data.Count; j++) {
                    if (data[j][0].Length > 0)
                    {
                        double value = double.Parse(data[j][i], CultureInfo.GetCultureInfo("pl-PL"));
                        if (value > 0)
                        {
                            Record record = new Record();
                            record.Id = Guid.NewGuid();
                            record.Code = data[0][i];
                            record.Desc1 = data[j][0];
                            record.Value1 = value;
                            record.CreatedAt = DateTime.UtcNow;
                            record.ModifiedAt= DateTime.UtcNow;
                            records.Add(record);
                        }
                    }
                };
            }

            return records;
        }
    }
}