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 SingleResQtiesOrCostByTimeController : BaseController
    {
        public enum GraphType{
            General = 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 SingleResQtiesOrCostByTimeModel();
            model.ExpenditureItems = GetExpenditureCategories();
            model.SelectedExpenditureItems = "[" + string.Join(",", model.ExpenditureItems.Select(x => "\"" + x.Id.ToString() + "\"").ToArray()) + "]";

            model.FormScenarioReport(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()) + "]";

            //model.SelectedCapacityId = Guid.Parse("{B04238F5-32A6-4EA2-A4E7-22D64439229A}");

            model.FormСhartListElements(DbContext);
            var user = new UsersCache().Value.FirstOrDefault(x => x.Id == new Guid(HttpContext.User.Identity.GetUserId()));
            if (user != null)
                ViewBag.IsUOMHours = !user.PreferredResourceAllocation;
            return View(model);
        }

        [HttpPost]
        [AreaSecurityAttribute(area = Areas.Reports, level = AccessLevel.Read)]
        public ActionResult Index(SingleResQtiesOrCostByTimeModel model)
        {
            ModelState.Clear();
            //model.SelectedCapacityId = Guid.Parse("{B04238F5-32A6-4EA2-A4E7-22D64439229A}");
            model.FormScenarioReport(DbContext);
            model.FormСhartListElements(DbContext);
            model.ExpenditureItems = GetExpenditureCategories();

            //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);
            return PartialView("_filter", model);
        }

        [HttpPost]
        [AreaSecurityAttribute(area = Areas.Reports, level = AccessLevel.Read)]
        public ActionResult Filter(SingleResQtiesOrCostByTimeModel model)
        {
            //model.SelectedCapacityId = Guid.Parse("{B04238F5-32A6-4EA2-A4E7-22D64439229A}");
            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, List<Guid> selectedExpenditureItems,
            GraphType graphType, ScenarioType type, Guid? groupId, string SystemAttributeOne, string SystemAttributeTwo, Guid? selectedCapacity, bool? isUOMHours)
        {
            if (selectedScenarios == null)
                selectedScenarios = new List<Guid>();

            if (selectedExpenditureItems == null)
                selectedExpenditureItems = new List<Guid>();

            SingleResQtiesOrCostByTimeDataModel result = new SingleResQtiesOrCostByTimeDataModel();
            StartDate = StartDate ?? DateTime.Now.AddMonths(-6);
            EndDate = EndDate ?? DateTime.Now.AddMonths(6);
            
            var model = new SingleResQtiesOrCostByTimeModel()
            {
                StartDate = StartDate.Value,
                EndDate = EndDate.Value,
                
                SelectedExpenditureItems = "[" + string.Join(",", selectedExpenditureItems.Select(x => x.ToString()).ToArray()) + "]",
                SelectedScenarioType= type,
                GroupId = groupId,
                SystemAttribute1 = SystemAttributeOne,
                SystemAttribute2 = SystemAttributeTwo,
                SelectedCapacity = selectedCapacity.Value,
                UOMSwitcherMode = isUOMHours
            };
            model.FormScenarioReport(DbContext);
            
            selectedScenarios.RemoveAll(x => !model.Scenarios.Select(s => s.Id).Contains(x));
            model.SelectedScenarios = "[" + string.Join(",", selectedScenarios.Select(x => x.ToString()).ToArray()) + "]";
            
            //model.SelectedCapacityId  = Guid.Parse("{B04238F5-32A6-4EA2-A4E7-22D64439229A}");

            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)
                         .OrderBy(t => t.EndDate)
                         .ToArray();

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

            List<ScenarioType> ScenarioTypes = new List<ScenarioType>(){
                ScenarioType.Capacity, 
                ScenarioType.LoanOut, 
                ScenarioType.Training, 
                ScenarioType.Vacation
            };

            foreach (var s in model.Scenarios.Where(t => selectedScenarios.Contains(t.Id)))
            {
                result.SingleResQtiesOrCostByTime.Add(new SingleResQtiesOrCostByTimeDataModel.SingleResQtiesOrCostByTimeDataRow()
                {
                    ScenarioName = s.Name,
                    QuantityValues = new List<decimal>(),
                    CostValues = new List<decimal>()
                });
            }

            foreach (var s in ScenarioTypes)
            {
                result.SingleResQtiesOrCostByTime.Add(new SingleResQtiesOrCostByTimeDataModel.SingleResQtiesOrCostByTimeDataRow()
                {
                    ScenarioName = s.ToDisplayValue(),
                    QuantityValues = new List<decimal>(),
                    CostValues = new List<decimal>()
                });
            }

            for (int i = 0; i < weeks.Count(); i++)
            {
                var endDate = weeks[i].EndDate;
                var scenarioName = string.Empty;

                foreach (var s in ScenarioTypes)
                {
                    decimal qty_val = 0;
                    decimal cost_val = 0;
                    if (model.ChartData.ContainsKey(s.ToDisplayValue()))
                    {
                        var scenario = model.ChartData[s.ToDisplayValue()];
                        var chartVals = new List<SingleResQtiesOrCostByTimeModel.СhartListElement>();
                        if (ScenarioType.Vacation.GetHashCode().Equals(scenario.FirstOrDefault().ScenarioType) ||
                            ScenarioType.Training.GetHashCode().Equals(scenario.FirstOrDefault().ScenarioType))
                            chartVals = scenario.Where(t => endDate >= t.WeekEndingDate && t.WeekEndingDate >= endDate.AddDays(-6)).ToList();
                        else
                            chartVals = scenario.Where(t => endDate.ToShortDateString().Equals(t.WeekEndingDate.ToShortDateString())).ToList();
                        
                        qty_val = (decimal)chartVals.Select(x=>x.Quantity).Sum();
                        if (graphType == GraphType.Probability) // && CG.Equals(chartVal.CGEFX.Trim()))
                        {
                            //qty_val = Convert.ToDecimal(qty_val * chartVal.Probability);
                            qty_val = Convert.ToDecimal(Math.Round((decimal)chartVals.Where(chartVal => CG.Equals(chartVal.CGEFX.Trim())).
                                Select(chartVal => chartVal.Quantity * chartVal.Probability).Sum(), 2));
                        }

                        cost_val = Math.Round((decimal)chartVals.Select(x => x.Cost).Sum(), 2);
                        if (graphType == GraphType.Probability) // && CG.Equals(chartVal.CGEFX.Trim()))
                        {
                            cost_val = Convert.ToDecimal(Math.Round((decimal)chartVals.Where(chartVal=>CG.Equals(chartVal.CGEFX.Trim())).
                                Select(chartVal => chartVal.Cost * chartVal.Probability).Sum(), 2));
                        }
                        scenarioName = scenario.FirstOrDefault().ScenarioDispalyName;
                    }
                    var item = result.SingleResQtiesOrCostByTime.FirstOrDefault(x => x.ScenarioName.Equals(s.ToDisplayValue()));
                    item.QuantityValues.Add(qty_val);
                    //if (s == ScenarioType.Capacity)
                    item.ScenarioDisplayName = scenarioName;
                    item.ScenarioType = s.ToDisplayValue();
                    item.CostValues.Add(cost_val);
                }

                foreach (var s in model.Scenarios.Where(t => selectedScenarios.Contains(t.Id)))
                {
                    decimal qty_val = 0;
                    decimal cost_val = 0;
                    if (model.ChartData.ContainsKey(s.Name))
                    {
                        var scenario = model.ChartData[s.Name];
                        var chartVals = scenario.Where(t => endDate.ToShortDateString().Equals(t.WeekEndingDate.ToShortDateString())).ToList();
                        qty_val = (decimal)chartVals.Select(x => x.Quantity).Sum();
                        if (graphType == GraphType.Probability) // && CG.Equals(chartVal.CGEFX.Trim()))
                        {
                            //qty_val = Convert.ToDecimal(qty_val * chartVal.Probability);
                            qty_val = Convert.ToDecimal(Math.Round((decimal)chartVals.Where(chartVal => CG.Equals(chartVal.CGEFX.Trim())).
                                Select(chartVal => chartVal.Quantity * chartVal.Probability).Sum(), 2));
                        }

                        cost_val = Math.Round((decimal)chartVals.Select(x => x.Cost).Sum(), 2);
                        if (graphType == GraphType.Probability) // && CG.Equals(chartVal.CGEFX.Trim()))
                        {
                            cost_val = Convert.ToDecimal(Math.Round((decimal)chartVals.Where(chartVal => CG.Equals(chartVal.CGEFX.Trim())).
                                Select(chartVal => chartVal.Cost * chartVal.Probability).Sum(), 2));
                        }
                    }
                    var items = result.SingleResQtiesOrCostByTime.Where(x => x.ScenarioName.Equals(s.Name)).ToList();
                    items.ForEach(x => x.QuantityValues.Add(qty_val));
                    items.ForEach(x => x.CostValues.Add(cost_val));
                    items.ForEach(x => x.ProjectName = s.ProjectName);

                    //item.QuantityValues.Add(qty_val);
                    //item.CostValues.Add(cost_val);
                    //item.ProjectName = s.ProjectName;
                }
            }

            result.FiscalCalendarRecordHeaders = gridHeaders.Select(t=>t.ToShortDateString()).ToList();
            result.FiscalCalendarRecordMilliseconds = gridHeaders.Select(t => (long)t.Subtract(new DateTime(1970, 1, 1)).TotalMilliseconds).ToList();

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

            return Json(result, JsonRequestBehavior.AllowGet);
        }

        public IList<SingleResQtiesOrCostByTimeModel.ExpenditureItem> GetExpenditureCategories()
        {
            //if (templateId == null || templateId == Guid.Empty)
            //    return new ScenarioModel.ExpenditureItem[0];

            var list = new List<SingleResQtiesOrCostByTimeModel.ExpenditureItem>();
            var categories = DbContext.VW_ExpCategoriesInScenario.ToArray();
            var lstIds = categories.Select(t => t.Id).ToList();
            var arrCalculatedIds = categories.Where(t => t.UseType == (int)ExpenditureCategoryModel.UseTypes.Calculated).Select(t => t.Id).ToArray();
           
            if (arrCalculatedIds.Length > 0)
            {
                foreach (var item in DbContext.VW_Expenditure2Calculation.Where(t => arrCalculatedIds.Contains(t.ParentId)))
                {
                    if (!item.ExpenditureCategoryID.HasValue)
                        continue;
                    if (!lstIds.Contains(item.ExpenditureCategoryID.Value))
                        lstIds.Add(item.ExpenditureCategoryID.Value);
                }
            }
            // add not checked expenditure categories for Labor/Materials/Usage types
            list.AddRange(DbContext.VW_Expenditure2Category.Where(t => !lstIds.Contains(t.Id))
                                   .OrderBy(t => t.Type)
                                   .ThenBy(t => t.ExpenditureName)
                                   .Select(t => new
                                   {
                                       t.Id,
                                       t.ExpenditureName,
                                       t.Type
                                   }).ToArray()
                                   .Select(t => new SingleResQtiesOrCostByTimeModel.ExpenditureItem
                                   {
                                       Id = t.Id,
                                       Group = ((ExpenditureCategoryModel.CategoryTypes)(t.Type ?? 0)).ToDisplayValue(),
                                       Name = t.ExpenditureName,
                                       Checked = false
                                   }));
            // add checked expenditure categories from template
            list.AddRange(DbContext.VW_Expenditure2Category.Where(t => lstIds.Contains(t.Id))
                                   .OrderBy(t => t.ExpenditureName)
                                   .Select(t => new SingleResQtiesOrCostByTimeModel.ExpenditureItem
                                   {
                                       Id = t.Id,
                                       Group = Constants.EXPENDITURE_INTEMPLATE_TITLE,
                                       Name = t.ExpenditureName,
                                       Checked = true
                                   }).ToArray());
            return list;
        }
    }
}