using System;
using System.Collections.Generic;
using System.Linq;
using InABox.Core;

namespace Comal.Classes
{
    public class EmployeeRosterItem : BaseObject, IImportable, IExportable
    {
        private static readonly Dictionary<string, Func<EmployeeRosterItem, TimeSpan>> times = new  Dictionary<string, Func<EmployeeRosterItem, TimeSpan>>()
        {
            { "Start", x => x.Start },
            { "Finish", x => x.Finish },
            { "Break", x => x.Break },
            { "Start2", x => x.Start2 },
            { "Finish2", x => x.Finish2 },
            { "Break2", x => x.Break2 }
        };
        
        [IntegerEditor(Alignment = Alignment.MiddleCenter, Editable = Editable.Disabled)]
        [EditorSequence(1)]
        [Caption("Day")]
        public int Day { get; set; }

        [TextBoxEditor(Editable = Editable.Disabled)]
        [EditorSequence(2)]
        public string Description { get; set; }

        [CheckBoxEditor]
        [EditorSequence(3)]
        [Caption("Rostered On?")]
        public bool Enabled { get; set; }

        [TimeOfDayEditor(Format = "hh:mm", Width = 70)]
        [EditorSequence(4)]
        public TimeSpan Start { get; set; }

        [TimeOfDayEditor(Format = "hh:mm", Width = 70)]
        [EditorSequence(5)]
        public TimeSpan Finish { get; set; }

        [DurationEditor(Format = "hh:mm", Visible = Visible.Default, Editable = Editable.Enabled, Width = 70)]
        [EditorSequence(6)]
        public TimeSpan Break { get; set; }

        [CheckBoxEditor]
        [EditorSequence(7)]
        [Caption("Split")]
        public bool SplitShift { get; set; }

        [TimeOfDayEditor(Format = "hh:mm", Width = 70)]
        [EditorSequence(8)]
        [Caption("Start 2")]
        public TimeSpan Start2 { get; set; }

        [TimeOfDayEditor(Format = "hh:mm", Width = 70)]
        [EditorSequence(9)]
        [Caption("Finish 2")]
        public TimeSpan Finish2 { get; set; }

        [DurationEditor(Format = "hh:mm", Visible = Visible.Default, Editable = Editable.Enabled, Width = 70)]
        [EditorSequence(10)]
        [Caption("Break 2")]
        public TimeSpan Break2 { get; set; }
        
        [DoubleEditor(Format = "F2", Visible = Visible.Default, Editable = Editable.Disabled, Summary = Summary.Sum, Width = 70,
            Alignment = Alignment.MiddleCenter)]
        [EditorSequence(12)]
        [Caption("Total")]
        public double Duration { get; set; }
        
        protected override void DoPropertyChanged(string name, object before, object after)
        {
            base.DoPropertyChanged(name, before, after);
            if (times.ContainsKey(name))
                Duration = RecalculateTimes(name, (TimeSpan)after);
        }

        private double RecalculateTimes(string name, TimeSpan after)
        {
            double result = 0.0F;
            result = GetTime("Finish", name, after) - (GetTime("Start", name, after) + GetTime("Break", name, after));
            result = result + GetTime("Finish2", name, after) - (GetTime("Start2", name, after) + GetTime("Break2", name, after));
            return result;
        }

        private double GetTime(string column, string name, TimeSpan after)
        {
            if (string.Equals(column, name))
                return after.TotalHours;
            return times[column].Invoke(this).TotalHours;
        }

        public static EmployeeRosterItem[] FromJSON(String? json)
        {
            return !String.IsNullOrWhiteSpace(json)
                ? Serialization.Deserialize<List<EmployeeRosterItem>>(json)?.OrderBy(x => x.Day).ToArray() 
                  ?? new EmployeeRosterItem[] { }
                : new EmployeeRosterItem[] { };
        }

        public static String ToJSON(EmployeeRosterItem[] items)
        {
            return Serialization.Serialize(items);
        }
    }
}