using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Extensions.Logging;

namespace BlackRockReportFunction.Helpers
{
    public static class Formaters
    {
        public static string getSumOfRecordTimes(List<TimeOnly> recordTimes)
        {
            int totalHours = 0;
            int totalMinutes = 0;
            int totalSeconds = 0;

            // Calculate Seconds
            int totalRecordsSeconds = recordTimes.Sum(record => record.Second);
            totalSeconds = totalRecordsSeconds % 60;
            totalMinutes += totalRecordsSeconds / 60;

            // Calculate Minutes
            int totalRecordsMinutes = recordTimes.Sum(record => record.Minute);

            totalMinutes = totalMinutes + (totalRecordsMinutes % 60);
            totalHours += totalRecordsMinutes / 60;

            // Calculate Hours
            int totalRecordHours = recordTimes.Sum(record => record.Hour);
            totalHours += totalRecordHours;

            return string.Format("{0}:{1}:{2}", 
                totalHours > 9 ? totalHours : string.Format("0{0}", totalHours),
                totalMinutes > 9 ? totalMinutes : string.Format("0{0}", totalMinutes),
                totalSeconds > 9 ? totalSeconds : string.Format("0{0}", totalSeconds));
        }

        public static string getDecimalHours(string recordHoursSum)
        {
            var components = recordHoursSum.Split(':').ToList();

            var hours = (components[0].Length == 2 && components[0].First() == '0') 
                ? components[0].ToCharArray()[1].ToString() 
                : components[0];

            var totalMinutes = Convert.ToDecimal(components[1]) + (Convert.ToDecimal(components[2]) / 60);

            var minutesPercent = Convert.ToInt32(Math.Floor(totalMinutes * 100 / 60)).ToString();
            if (minutesPercent.Length == 1)
            {
                minutesPercent = string.Format("0{0}", minutesPercent);
            }

            return string.Format("{0}:{1}", hours, minutesPercent);
        }

        public static string getDecimalHours(TimeOnly recordTime)
        {
            return getDecimalHours(string.Format("{0}:{1}:{2}", recordTime.Hour, recordTime.Minute, recordTime.Second));
        }

        public static string getRecordTime(TimeOnly recordTime)
        {
            return string.Format("{0}:{1}:{2}", recordTime.Hour, recordTime.Minute, recordTime.Second);
        }

        public static string getTotalSum(List<string> personsSums)
        {
            var totalHours = 0;
            var totalMinutes = 0;
            var totalSeconds = 0;

            foreach(var personSum in personsSums)
            {
                var components = personSum.Split(':').Select(Int32.Parse).ToList();

                //add new person time
                totalSeconds += components[2] % 60;
                totalMinutes += components[2] / 60;

                //clean up new sum
                totalMinutes += totalSeconds / 60;
                totalSeconds = totalSeconds % 60;

                //add new person time
                totalMinutes += components[1] % 60;
                totalHours += components[1] / 60;

                //clean up new time
                totalHours += totalMinutes / 60;
                totalMinutes = totalMinutes % 60;

                //add new person time
                totalHours += components[0];
            }

            return string.Format("{0}:{1}:{2}",
                totalHours > 9 ? totalHours : string.Format("0{0}", totalHours),
                totalMinutes > 9 ? totalMinutes : string.Format("0{0}", totalMinutes),
                totalSeconds > 9 ? totalSeconds : string.Format("0{0}", totalSeconds));
        }

        public static string getTotalDecimalHours(List<string> usersDecimalHours)
        {
            var minutesPercent = 0;
            var hours = 0;
            foreach(var userDecimalHours in usersDecimalHours)
            {
                var components = userDecimalHours.Split(':');
                minutesPercent += Convert.ToInt32(components[1]);
                hours += Convert.ToInt32(components[0]);
            }

            hours += minutesPercent / 100;
            minutesPercent = minutesPercent % 100;

            return string.Format("{0}:{1}", hours, minutesPercent);
        }
    }
}