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

namespace MP.Data
{
    public class Utils
    {
        #region Public Properties

        public static string redKeyArtUsed
        {
            get => RedHash($"CACHE:CheckArtUsed");
        }

        public static string redKeyTabCheckArt
        {
            get => RedHash($"CACHE:TabCheckArt");
        }

        #endregion Public Properties

        #region Public Methods

        public static string ConvMinToTime(double minutes)
        {
            // FIXME TODO: da rendere parametrico da appsettings.json...
            var ts = TimeSpan.FromMinutes(minutes);
            string answ = $"{ts.Hours:00}:{ts.Minutes:00}:{ts.Seconds:00}"; //.{ts.Milliseconds}
            return answ;
        }

        public static string ConvMsecToTime(long milliseconds)
        {
            // FIXME TODO: da rendere parametrico da appsettings.json...
            var ts = TimeSpan.FromMilliseconds(milliseconds);
            string answ = $"{ts.Hours:00}:{ts.Minutes:00}:{ts.Seconds:00}"; //.{ts.Milliseconds}
            return answ;
        }

        /// <summary>
        /// Nome della variabile HASH da utilizzare (dato CodModulo / Server / DB impiegato da
        /// funzionalita' DbConfig) + keyName richiesto...
        /// </summary>
        public static string RedHash(string keyName)
        {
            string answ = keyName;
            try
            {
                answ = $"MP:Data:{keyName}";
            }
            catch
            { }
            return answ;
        }

        public static async Task SaveToCsv<T>(List<T> reportData, string path)
        {
            var lines = new List<string>();
            IEnumerable<PropertyDescriptor> props = TypeDescriptor.GetProperties(typeof(T)).OfType<PropertyDescriptor>();
            var header = string.Join(";", props.ToList().Select(x => x.Name));
            lines.Add(header);
            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()));
        }

        #endregion Public Methods
    }
}