using System;
using System.Collections.Generic;

using BeWo.Data.Entities;
using BeWo.Data.Access;
using System.Linq;
using BS.Shared.DataContracts;
using BS.Shared.DataContracts.Compact;

namespace BeWo.Report.ReportObjects
{
    public class AbsenceRO : AbstractBeWoReportObject<AbsenceRO>
    {
        public AbsenceOverviewFilterDC ReportFilter { get; set; }
        public List<AbsenceReportRow> AbsenceReportRows { get; set; }
        public List<CompactTeamDC> Teams { get; set; }
        public List<int> Feiertage { get; set; }

        public static AbsenceRO Create(List<EmployeeDC> employees, AbsenceOverviewFilterDC filter, List<CompactTeamDC> teams, List<int> feiertage)
        {
            var res = new AbsenceRO() { ReportFilter = filter, AbsenceReportRows = new List<AbsenceReportRow>() };
            var dt = new DateTime(filter.Year, filter.Month, 1);
            res.Teams = teams;
            res.Feiertage = feiertage;

            foreach (var emp in employees)
            {
                var row = new AbsenceReportRow
                {
                    Employee = emp.LastNameFirstName
                };

                var absenceTimes = emp.AbsenceTimes
                                              .OrderByDescending(x => x.End ?? DateTime.MaxValue)
                                              .OrderBy(x => x.Start)
                                              .ToArray();

                int dayInMonth = 0;
                int absNum = 0;

                if (absenceTimes != null && absenceTimes.Length > 0)
                {
                    var abs = absenceTimes[0];

                    while (dayInMonth < DateTime.DaysInMonth(filter.Year, filter.Month))
                    {
                        if (abs.Start.Value > dt.AddDays(dayInMonth))
                        {
                            dayInMonth++;
                            continue;
                        }

                        if ((abs.End ?? DateTime.MaxValue) < dt.AddDays(dayInMonth))
                        {
                            absNum++;

                            if (absNum >= absenceTimes.Length)
                                break;

                            abs = absenceTimes[absNum];
                            continue;
                        }

                        row.Days[dayInMonth++] = new CellValue()
                        {
                            Value = abs.Reason.Description.Substring(0, 3),
                            Color = abs.Reason.Color
                            //Color = "#FFFFFF00"
                        };
                    }
                }

                res.AbsenceReportRows.Add(row);
            }

            return res;
        }
    }

    public class AbsenceReportRow
    {
        public AbsenceReportRow()
        {
            Days = new CellValue[31];
        }

        public string Employee { get; set; }

        public int Position { get; set; }

        public CellValue[] Days { get; private set; }

        public CellValue Day1 => Days[0];

        public CellValue Day2 => Days[1];

        public CellValue Day3 => Days[2];

        public CellValue Day4 => Days[3];

        public CellValue Day5 => Days[4];

        public CellValue Day6 => Days[5];

        public CellValue Day7 => Days[6];

        public CellValue Day8 => Days[7];

        public CellValue Day9 => Days[8];

        public CellValue Day10 => Days[9];

        public CellValue Day11 => Days[10];

        public CellValue Day12 => Days[11];

        public CellValue Day13 => Days[12];

        public CellValue Day14 => Days[13];

        public CellValue Day15 => Days[14];

        public CellValue Day16 => Days[15];

        public CellValue Day17 => Days[16];

        public CellValue Day18 => Days[17];

        public CellValue Day19 => Days[18];

        public CellValue Day20 => Days[19];

        public CellValue Day21 => Days[20];

        public CellValue Day22 => Days[21];

        public CellValue Day23 => Days[22];

        public CellValue Day24 => Days[23];

        public CellValue Day25 => Days[24];

        public CellValue Day26 => Days[25];

        public CellValue Day27 => Days[26];

        public CellValue Day28 => Days[27];

        public CellValue Day29 => Days[28];

        public CellValue Day30 => Days[29];

        public CellValue Day31 => Days[30];
    }

    public class CellValue
    {
        public string Value { get; set; }

        public string Color { get; set; }

        public override string ToString()
        {
            return Value;
        }
    }
}