using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using EnVisage.Code;
using EnVisage.Code.Cache;
using EnVisage.Models;
using Microsoft.AspNet.Identity;

namespace EnVisage.Controllers
{
    public class WhatIfCalendarController : BaseController
    {
        public enum GraphType{
            Gebneral = 0,
            Probability =1
        }
        
        const string CG = "CG";
        const string EFX = "EFX";

        // GET: /ShowRollUp/
        [AreaSecurityAttribute(area = Areas.Reports, level = AccessLevel.Read)]
        public ActionResult Index()
        {
            var model = new WhatIfCalendarModel();
            model.FormScenarioReport(DbContext);
            model.FormСhartListElements(DbContext);
            var l = new List<Guid>();
            foreach (var s in model.Scenarios)
            {
                l.Add(s.Id);
            }
            model.SelectedScenarios = "[" + string.Join(",", l.Select(x=>"\"" + x.ToString() + "\"").ToArray()) + "]";
            var user = new UsersCache().Value.FirstOrDefault(x => x.Id == new Guid(HttpContext.User.Identity.GetID()));
            if (user != null)
                ViewBag.IsUOMHours = !user.PreferredResourceAllocation;
            return View(model);
        }

        [HttpPost]
        [AreaSecurityAttribute(area = Areas.Reports, level = AccessLevel.Read)]
        public ActionResult Index(WhatIfCalendarModel model)
        {
            ModelState.Clear();
            model.FormScenarioReport(DbContext);
            model.FormСhartListElements(DbContext);
            var l = new List<Guid>();

            foreach (var s in model.Scenarios)
            {
                l.Add(s.Id);
            }
            model.SelectedScenarios = "[" + string.Join(",", l.Select(x => "\"" + x.ToString() + "\"").ToArray()) + "]";
            return View(model);
        }

        [HttpPost]
        [AreaSecurityAttribute(area = Areas.Reports, level = AccessLevel.Read)]
        public ActionResult Filter(WhatIfCalendarModel model)
        {
            model.FormScenarioReport(DbContext);
            model.FormСhartListElements(DbContext);
            return View(model);

        }

        [HttpPost]
        [AreaSecurityAttribute(area = Areas.Reports, level = AccessLevel.Read)]
        public JsonResult GetGraphData(DateTime? StartDate, DateTime? EndDate, bool cost, List<Guid> selectedScenarios,
            GraphType graphType, ScenarioType type, Guid? groupId, bool? isUOMHours)
        {
            if (selectedScenarios == null)
                selectedScenarios = new List<Guid>();

            WhatIfCalendarDataModel result = new WhatIfCalendarDataModel();
            StartDate = StartDate ?? DateTime.Now.AddMonths(-6);
            EndDate = EndDate ?? DateTime.Now.AddMonths(6);

            var model = new WhatIfCalendarModel()
            {
                StartDate = StartDate.Value,
                EndDate = EndDate.Value,
                SelectedScenarios = "[" + string.Join(",", selectedScenarios.Select(x=>x.ToString()).ToArray()) + "]",
                SelectedScenarioType= type,
                GroupId = groupId,
                UOMSwitcherMode = isUOMHours
            };

            model.FormScenarioReport(DbContext);
            model.FormСhartListElements(DbContext);

			var days = EndDate.Value.Subtract(StartDate.Value).TotalDays;
			var periodType = (int)FiscalCalendarModel.FiscalYearType.Week;

			if (days > 400)
				periodType = (int)FiscalCalendarModel.FiscalYearType.Month;

            var weeks = DbContext.FiscalCalendars
                         .Where(t => t.Type == periodType &&
                                     t.EndDate <= EndDate && t.EndDate >= StartDate && t.AdjustingPeriod == false)
                         .OrderBy(t => t.EndDate)
                         .ToArray();

            var gridHeaders = weeks.Select(t => t.EndDate).ToList();

            //long _awardedCost = 0, _likelyAwardedCost = 0, _trainingCost = 0, _vacationCost = 0, _capacityCost = 0;
            var vacationRow = new WhatIfCalendarDataModel.WhatIfCalendarDataRow()
            {
                ScenarioName = "Vacation",
                QuantityValues = new List<long>(),
                ScenarioType = ScenarioType.Vacation.ToDisplayValue()
            };

            var trainingRow = new WhatIfCalendarDataModel.WhatIfCalendarDataRow()
            {
                ScenarioName = "Training",
                QuantityValues = new List<long>(),
                ScenarioType = ScenarioType.Training.ToDisplayValue()
            };

            foreach (var s in model.Scenarios.Where(t => selectedScenarios.Contains(t.Id)))
            {
                result.WhatIfCalendar.Add(new WhatIfCalendarDataModel.WhatIfCalendarDataRow()
                {
                    ScenarioName = s.Name,
                    QuantityValues = new List<long>(),
                    ScenarioType = s.Type.ToDisplayValue()
                });
            }
            result.WhatIfCalendar.Add(trainingRow);
            result.WhatIfCalendar.Add(vacationRow);
            
            for (int i = 0; i < weeks.Count(); i++)
            {
                var endDate = weeks[i].EndDate;
                foreach (var s in model.Scenarios.Where(t => selectedScenarios.Contains(t.Id)))
                {
                    long val = 0;
                    if (model.ChartData.ContainsKey(s.Name))
                    {
                        var scenario = model.ChartData[s.Name];
                        var chartVal = scenario.FirstOrDefault(t => t.WeekEndingDate.HasValue && endDate.ToShortDateString().Equals(t.WeekEndingDate.Value.ToShortDateString()));
                        if (chartVal != null)
                        {
                            if (((chartVal.ScenarioType == (int?)ScenarioType.Actuals && model.IncludeActuals == YesNoType.Yes)
                                    || (chartVal.ScenarioType != (int?)ScenarioType.Actuals && model.IncludeActuals == YesNoType.No)) &&
                                (((EFX.Equals(chartVal.CGEFX.Trim()) || CG.Equals(chartVal.CGEFX.Trim())) && model.LaborMaterials == LaborMaterialsType.LaborMaterials) ||
                                    (CG.Equals(chartVal.CGEFX.Trim()) && model.LaborMaterials == LaborMaterialsType.Labor) ||
                                    (EFX.Equals(chartVal.CGEFX.Trim()) && model.LaborMaterials == LaborMaterialsType.Materials)))
                            {
                                val = cost ? (long)chartVal.Cost : (long)(chartVal.Quantity);
                                if (graphType == GraphType.Probability && CG.Equals(chartVal.CGEFX.Trim()))
                                {
                                    val = Convert.ToInt64(Math.Round(val * chartVal.Probability));
                                }
                            }
                        }
                    }
                    var item = result.WhatIfCalendar.FirstOrDefault(x => x.ScenarioName.Equals(s.Name));
                    item.QuantityValues.Add(val);
                }
                #region Vacations

                if (model.ChartData.ContainsKey("Vacation"))
                {
                    var chartVal = model.ChartData["Vacation"].FirstOrDefault(t =>
                            t.WeekEndingDate.HasValue &&
                            endDate.ToShortDateString().Equals(t.WeekEndingDate.Value.ToShortDateString()));
                    long val = 0;
                    if (chartVal != null)
                    {
                        val = cost ? (long)chartVal.Cost : (long)(chartVal.Quantity);
                        if (graphType == GraphType.Probability && CG.Equals(chartVal.CGEFX.Trim()))
                        {
                            val = Convert.ToInt64(Math.Round(val * chartVal.Probability));
                        }
                    }
                    vacationRow.QuantityValues.Add(val);
                }

                #endregion

                #region Trainings

                if (model.ChartData.ContainsKey("Training"))
                {
                    var chartVal = model.ChartData["Training"].FirstOrDefault(t =>
                            t.WeekEndingDate.HasValue &&
                            endDate.ToShortDateString().Equals(t.WeekEndingDate.Value.ToShortDateString()));
                    long val = 0;
                    if (chartVal != null)
                    {
                        val = cost ? (long)chartVal.Cost : (long)(chartVal.Quantity);
                        if (graphType == GraphType.Probability && CG.Equals(chartVal.CGEFX.Trim()))
                        {
                            val = Convert.ToInt64(Math.Round(val * chartVal.Probability));
                        }
                    }
                    trainingRow.QuantityValues.Add(val);
                }

                #endregion
            }

            result.FiscalCalendarRecordHeaders = gridHeaders.Select(t=>t.ToShortDateString()).ToList();
            result.FiscalCalendarRecordMilliseconds = gridHeaders.Select(t => (long)t.Subtract(Constants.UnixEpochDate).TotalMilliseconds).ToList();

            //JavaScriptSerializer js = new JavaScriptSerializer();
            //string strJSON = js.Serialize(result);
            //return strJSON;

            return Json(result, JsonRequestBehavior.AllowGet);
        }
    }
}