using System;
using InABox.Core;

namespace Comal.Classes
{
    public class JobStageCalendarLink : EntityLink<JobStageCalendar>
    {
        [LookupEditor(typeof(JobStageCalendar))]
        public override Guid ID { get; set; }

        [TextBoxEditor(Editable = Editable.Hidden)]
        public string Name { get; set; }

        [DecimalEditor(Editable = Editable.Hidden)]
        public decimal Monday { get; set; }

        [DecimalEditor(Editable = Editable.Hidden)]
        public decimal Tuesday { get; set; }

        [DecimalEditor(Editable = Editable.Hidden)]
        public decimal Wednesday { get; set; }

        [DecimalEditor(Editable = Editable.Hidden)]
        public decimal Thursday { get; set; }

        [DecimalEditor(Editable = Editable.Hidden)]
        public decimal Friday { get; set; }

        [DecimalEditor(Editable = Editable.Hidden)]
        public decimal Saturday { get; set; }

        [DecimalEditor(Editable = Editable.Hidden)]
        public decimal Sunday { get; set; }

        private decimal WorkHours(DateTime date)
        {
            if (date.DayOfWeek.Equals(DayOfWeek.Sunday))
                return ID.Equals(Guid.Empty) ? 0 : Sunday;
            if (date.DayOfWeek.Equals(DayOfWeek.Monday))
                return ID.Equals(Guid.Empty) ? 8 : Monday;
            if (date.DayOfWeek.Equals(DayOfWeek.Tuesday))
                return ID.Equals(Guid.Empty) ? 8 : Tuesday;
            if (date.DayOfWeek.Equals(DayOfWeek.Wednesday))
                return ID.Equals(Guid.Empty) ? 8 : Wednesday;
            if (date.DayOfWeek.Equals(DayOfWeek.Thursday))
                return ID.Equals(Guid.Empty) ? 8 : Thursday;
            if (date.DayOfWeek.Equals(DayOfWeek.Friday))
                return ID.Equals(Guid.Empty) ? 8 : Friday;
            if (date.DayOfWeek.Equals(DayOfWeek.Saturday))
                return ID.Equals(Guid.Empty) ? 0 : Saturday;
            return 0;
        }

        public int CalculateWorkDays(DateTime start, DateTime finish)
        {
            var result = 0;
            for (var date = start; date <= finish; date = date.AddDays(1))
                if (WorkHours(date) > 0)
                    result++;
            return result;
        }

        public DateTime CalculateEndDate(DateTime start, int days)
        {
            var result = start.AddDays(-1);

            var curdays = days;
            while (curdays > 0)
            {
                result = result.AddDays(1);
                var hours = WorkHours(result);
                if (hours > 0)
                    curdays--;
            }

            return result;
        }

        public decimal CalculateHours(DateTime start, DateTime end, decimal ratio)
        {
            var result = 0.0m;

            for (var date = start; date <= end; date = date.AddDays(1))
                result += WorkHours(date) * ratio;
            return result;
        }

        public decimal CalculateWorkers(DateTime start, DateTime end, decimal hours)
        {
            if (hours == default)
                return default;

            var hoursperworker = 0.0m;
            for (var date = start; date <= end; date = date.AddDays(1))
                hoursperworker += WorkHours(date);

            if (hoursperworker == default)
                return default;

            return hours / hoursperworker;
        }
    }

    [UserTracking(typeof(JobStage))]
    public class JobStageCalendar : Entity, IRemotable, IPersistent, ILicense<ProjectManagementLicense>
    {
        public string Name { get; set; }

        public decimal Monday { get; set; } = 8;
        public decimal Tuesday { get; set; } = 8;
        public decimal Wednesday { get; set; } = 8;
        public decimal Thursday { get; set; } = 8;
        public decimal Friday { get; set; } = 8;
        public decimal Saturday { get; set; } = 0;
        public decimal Sunday { get; set; } = 0;
    }
}