using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.IO;
using System.Linq;
using System.Threading.Tasks;

namespace IOB_UT_NEXT
{
    public  class DataExport
    {

        /// <summary>
        /// Effettua salvataggio in file di un generico oggetto in formato CSV
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="reportData"></param>
        /// <param name="path"></param>
        /// <param name="separator">Separatore da impiegare (default ";")</param>
        /// <returns></returns>
        public static async Task SaveToCsv<T>(List<T> reportData, string path, char separator=';')
        {
            var lines = new List<string>();
            IEnumerable<PropertyDescriptor> props = TypeDescriptor.GetProperties(typeof(T)).OfType<PropertyDescriptor>();
            var header = string.Join($"{separator}", props.ToList().Select(x => x.Name));
            lines.Add(header);
            var valueLines = reportData.Select(row => string.Join($"{separator}", header.Split(separator).Select(a => row.GetType().GetProperty(a).GetValue(row, null))));
            //var valueLines = reportData.Select(row => string.Join(";", header.Split(';').Select(a => row.GetType().GetProperty(a).GetValue(row, null))));
            lines.AddRange(valueLines);
            await Task.Run(() => File.WriteAllLines(path, lines.ToArray()));
        }
    }
}