using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Web.Mvc;
using BeWo.Report;
using BeWo.Service.Plugins;
using BeWo.View.Navigation.Filter;
using BeWoPlanerMobil.Models;
using BeWoPlanerMobil.Service;
using BeWoPlanerMobil.Util;
using BS.Shared;
using BS.Shared.DataContracts;
using BS.Shared.DataContracts.Compact;

namespace BeWoPlanerMobil.Controllers
{
    public class ReportViewerController : ReportBaseController
    {
        private ReportViewerModel _Model;

        public ReportViewerModel Model
        {
            get
            {
                if(!MobileSessionFacade.IsUserLoggedIn())
                {
                    RedirectToActionPermanent("Index", "Login");
                    return null;
                }

                if(((ReportViewerModel)Session[ModelSessionConstants.ReportViewerModelKey])?.Employee is null)
                {
                    _Model = new ReportViewerModel { Employee = MobileSessionFacade.LoggedInEmployee, ReportCreator = GetReportCreator() };
                    Session[ModelSessionConstants.ReportViewerModelKey] = _Model;
                }
                else
                {
                    _Model = (ReportViewerModel)Session[ModelSessionConstants.ReportViewerModelKey];
                }

                return _Model;
            }
        }

        [Authorize]
        public ActionResult ReportViewer()
        {
            if(Model is null)
            {
                TempData[TempDataConstants.DoLogoutKey] = true;
                return Logout();
            }

            Model.Report = null;

            var month = DateTime.Today.Month;
            var year = DateTime.Today.Year;
            var first = new DateTime(year, month, 1).AddMonths(-1);

            Model.SelectedYear = Model.SelectedYear ?? first.Year;
            Model.SelectedMonth = Model.SelectedMonth ?? first.Month;

            Model.AllEmployees = AbstractModel.HasRightMitarbeiterstundenkontoViewAll 
                ? EmployeeService.GetAllActiveEmployeesCompact() 
                : new List<CompactEmployeeDC> { MobileSessionFacade.LoggedInCompactEmployee };

            // Alle Teams darf man nur sehen, wenn man das Recht "HasRightMitarbeiterstundenkontoViewAll" hat.
            // Hat man weder das Recht "HasRightMitarbeiterstundenkontoViewAll" noch "HasRightMitarbeiterstundenkontoViewTeams", sieht man die Teams gar nicht.
            // Hat man das Recht "HasRightMitarbeiterstundenkontoViewTeams", aber nicht das Recht "HasRightMitarbeiterstundenkontoViewAll", sieht man nur die Teams, deren Teamleiter man ist.

            Model.AllTeams = AbstractModel.HasRightMitarbeiterstundenkontoViewAll
                ? EmployeeService.GetAllActiveCompactTeamsForEmployee(MobileSessionFacade.LoggedInEmployee.EmployeeOid) 
                : EmployeeService.FindLeadingCompactTeamsOfEmployee(MobileSessionFacade.LoggedInCompactEmployee.EmployeeOid);

            if(!AbstractModel.HasRightMitarbeiterstundenkontoViewAll)
            {
                Model.SelectedEmployeeOid = MobileSessionFacade.LoggedInCompactEmployee.EmployeeOid;
            }

            Model.ReportTypes = new List<SelectListItem>();

#if DEBUG
            //if(AbstractModel.HasRightToViewReports)
            //{
            //    Model.ReportTypes.Add(new SelectListItem
            //    {
            //        Text = "Berichte",
            //        Value = "0"
            //    });
            //}
#endif

            if(AbstractModel.HasRightToViewMitarbeiterstundenkonto)
            {
                Model.ReportTypes.Add(new SelectListItem
                {
                    Text = "Mitarbeiterstundenkonto",
                    Value = "1"
                });
            }

            Model.SelectedReportType = ReportType.Mitarbeiterstundenkonto;

#if DEBUG
            //Model.SelectedReportType = ReportType.Berichte;
#endif

            Model.Queries = QueryService.GetAllQueriesOfType(QueryType.Public);

            if(Model.Employee?.EmployeeOid.HasValue ?? false)
            {
                Model.SupportConcepts = EmployeeService.GetActiveSupportConceptsForEmployee(Model.Employee.EmployeeOid, CustomerFilterEnum.All);
            }
            else
            {
                Model.SupportConcepts = new List<SupportConceptDC>();
            }

            if(Model.SelectedCostBearer2SupportConceptRelListObject is null)
            {
                Model.SelectedCostBearer2SupportConceptRelListObject = Model.CostBearer2SupportConceptRelListObjects.FirstOrDefault(f => f.CostBearer2SupportConceptOid == "-1") ?? Model.CostBearer2SupportConceptRelListObjects.First();
            }

            if(Model.SelectedMonthForBericht is null)
            {
                Model.SelectedMonthForBericht = Model.Months.FirstOrDefault(m => m.Value.Equals(DateTime.Today.Month.ToString()));
            }

            if(Model.SelectedYearForBericht is null || Model.SelectedYearForBericht.Value < DateTime.Today.AddYears(-10).Year)
            {
                Model.SelectedYearForBericht = DateTime.Today.Year;
            }

            return View(Model);
        }

        [Authorize]
        public ActionResult DocumentWebViewerPartial()
        {
            if(Model is null)
            {
                TempData[TempDataConstants.DoLogoutKey] = true;
            }

            return PartialView("BeWoReportPartial", Model);
        }

        [Authorize]
        public ActionResult LoadCustomReport(long? reportOid)
        {
            try
            {
                if(Model?.Employee?.EmployeeOid is null || reportOid is null)
                {
                    TempData[TempDataConstants.DoLogoutKey] = true;
                    return PartialView("BeWoReportPartial");
                }

                var selectedQuery = Model.Queries.FirstOrDefault(query => query.Oid.Equals(reportOid.Value));

                if(selectedQuery is null)
                {
                    Model.Report = null;
                    return PartialView("BeWoReportPartial", Model);
                }

                Model.SelectedQuery = selectedQuery;

                var dcid = $"{MobileSessionFacade.Tenant}queryeoid{Model.Employee.EmployeeOid.Value}";

                var queryResult = QueryService.ExecuteQuery(selectedQuery.Oid, null);
                
                if(queryResult is null)
                {
                    return PartialView("BeWoReportPartial", Model);
                }

                QueryService.PrepareQueryReport(queryResult, dcid);
                var queryReport = Model.ReportCreator.CreateQueryReport(selectedQuery.Oid, dcid);

                Model.Report = queryReport;
                Model.ReportName = selectedQuery.Title;
            }
            catch(Exception e)
            {
                Log.Error(e);
                if(Model != null)
                {
                    Model.ReportName = "Fehler";
                }
                TempData[TempDataConstants.ReportErrorMessageKey] = e.Message;
            }

            return PartialView("BeWoReportPartial", Model);
        }

        [Authorize]
        public ActionResult LoadBerichteForm(long? reportOid)
        {
            try
            {
                if(Model?.Employee?.EmployeeOid is null || reportOid is null)
                {
                    TempData[TempDataConstants.DoLogoutKey] = true;
                    return PartialView("BerichteFormPartialView");
                }

                var selectedQuery = Model.Queries.FirstOrDefault(query => query.Oid.Equals(reportOid.Value));

                Model.SelectedQuery = selectedQuery;

                return PartialView("BerichteFormPartialView", Model);
            }
            catch(Exception exception)
            {
                Log.Error(exception);
                TempData[TempDataConstants.ReportErrorMessageKey] = exception.Message;
            }

            return PartialView("BerichteFormPartialView", Model);
        }

        //[Authorize]
        //private string GetQueryReportUrl(QueryDC query)
        //{
        //    var url = Request?.Url;
            
        //    if(Model?.Employee?.EmployeeOid is null || url is null || query is null)
        //    {
        //        return null;
        //    }

        //    //DEBUG:   http://localhost:3777/service
        //    //RELEASE: https://app4.bewoplaner.de/service
        //    // http://localhost:3777/Host/ReportView.aspx?dcid=demoqueryeoid372&qoid=1304&type=QueryReport

        //    var urlSuffix = $"/ReportView.aspx?dcid={MobileSessionFacade.Tenant}queryeoid{Model.Employee.EmployeeOid.Value}&qoid={query.Oid}&type={Utils.EnumName(ReportTypes.QueryReport)}";

        //    return GetSiteOfOrigin() + urlSuffix;
        //}

        private string GetSiteOfOrigin()
        {
            if(Model?.Employee?.EmployeeOid is null)
            {
                return null;
            }

            var url = Request?.Url;

#if DEBUG
            return "http://localhost:3777/Host";
#endif

            return $"{url.Scheme}://{url.Host}/service";
        }

        [Authorize]
        public ActionResult LoadViewerForm(string reportType)
        {
            if(Model is null)
            {
                TempData[TempDataConstants.DoLogoutKey] = true;
                return PartialView("ReportViewerFormPartial");
            }

            Model.SelectedReportType = reportType == "0" ? ReportType.Berichte : ReportType.Mitarbeiterstundenkonto;
            
            return PartialView("ReportViewerFormPartial", Model);
        }

        [Authorize]
        public ActionResult LoadMitarbeiterstundenkonto(string parameters)
        {
            if(Model?.Employee?.EmployeeOid is null)
            {
                TempData[TempDataConstants.DoLogoutKey] = true;
                return PartialView("BeWoReportPartial");
            }

            if(!string.IsNullOrWhiteSpace(parameters))
            {
                var splitParameters = parameters.Split(';');

                if(splitParameters.Length == 6)
                {
                    var month = int.Parse(splitParameters[0]);
                    var year = int.Parse(splitParameters[1]);
                    var isEmployee = bool.Parse(splitParameters[2]);
                    var all = bool.Parse(splitParameters[3]);
                    long? employeeOid = null;
                    List<long> teamOids = null;
                    long? oid = null;

                    if(long.TryParse(splitParameters[4], out var oOid))
                    {
                        oid = oOid;
                    }

                    var ansicht = int.Parse(splitParameters[5]);

                    if(isEmployee)
                    {
                        employeeOid = oid;

                        if(all || !AbstractModel.HasRightMitarbeiterstundenkontoViewAll)
                        {
                            employeeOid = null;
                        }

                        if(!(employeeOid is null))
                        {
                            employeeOid = oid;
                        }

                        if(!AbstractModel.HasRightMitarbeiterstundenkontoViewAll)
                        {
                            employeeOid = Model.Employee.EmployeeOid;
                        }
                    }
                    else
                    {
                        teamOids = new List<long>();

                        var teamOid = oid;

                        if(all || (!AbstractModel.HasRightMitarbeiterstundenkontoViewAll && !AbstractModel.HasRightMitarbeiterstundenkontoViewTeams))
                        {
                            teamOid = null;
                        }

                        if(!(teamOid is null))
                        {
                            teamOid = oid;
                        }

                        if(teamOid > 0 && !all)
                        {
                            teamOids.Add(teamOid.Value);
                        }
                        else if(all)
                        {
                            teamOids.AddRange(Model.AllTeams.Select(team => team.TeamOid));
                        }
                    }

                    var start = new DateTime(year, month, 1);
                    var end = start.AddMonths(1);
                    var report = Model.ReportCreator.CreateEmployeeHourReport(employeeOid, teamOids, start, end, ansicht);
                    Model.Report = report;
                }
            }
            
            return PartialView("BeWoReportPartial", Model);
        }

        private static AbstractReportCreator GetReportCreator()
        {
            AbstractReportCreator creator = PluginLoader.FindClass<DefaultReportCreator>() ?? new DefaultReportCreator();

            var mobileBaseDirectory = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, @"..\Host\");
#if DEBUG
            creator.TempPath = BS.Shared.Core.Utils.CreateSavePath(mobileBaseDirectory, @"demo\temp");
#else
			creator.TempPath = BS.Shared.Core.Utils.CreateSavePath(mobileBaseDirectory, PluginLoader.Tenant + @"\temp");
#endif
            return creator;
        }

        [Authorize]
        public override string ResetReport()
        {
            if(Model is null)
            {
                TempData[TempDataConstants.DoLogoutKey] = true;
                return LeerzeichenFuerGetMethoden;
            }

            Model.Report = null;
            Model.ReportName = null;

            return LeerzeichenFuerGetMethoden;
        }

        // ToDo: Parameter hinzufügen
        [Authorize]
        public ActionResult CreateBerichtWithParameters()
        {
            if(Model?.SelectedQuery is null)
            {
                TempData[TempDataConstants.DoLogoutKey] = true;
                return PartialView("BeWoReportPartial");
            }



            return PartialView("BeWoReportPartial", Model);
        }

        [Authorize]
        public ActionResult SelectCostBearer2SupportConceptRel(long? relOid)
        {
            if(Model?.SelectedQuery is null)
            {
                TempData[TempDataConstants.DoLogoutKey] = true;
                return PartialView("BerichteFormPartialView", Model);
            }

            if(relOid != null)
            {
                Model.SelectedCostBearer2SupportConceptRelListObject = Model.CostBearer2SupportConceptRelListObjects.FirstOrDefault(f => f.CostBearer2SupportConceptOid != null && f.CostBearer2SupportConceptOid.Equals(relOid.Value.ToString()));
            }

            return PartialView("BerichteFormPartialView", Model);
        }

        [Authorize]
        public ActionResult SelectMonth(string selectedMonth)
        {
            if(Model?.SelectedQuery is null)
            {
                TempData[TempDataConstants.DoLogoutKey] = true;
                return PartialView("BerichteFormPartialView");
            }

            var month = Model.Months.FirstOrDefault(f => f.Value.Equals(selectedMonth));

            if(month != null)
            {
                Model.SelectedMonthForBericht = month;
            }

            return PartialView("BerichteFormPartialView", Model);
        }

        [Authorize]
        public ActionResult SelectYear(string selectedYear)
        {
            if(Model?.SelectedQuery is null)
            {
                TempData[TempDataConstants.DoLogoutKey] = true;
                return PartialView("BerichteFormPartialView");
            }

            if(int.TryParse(selectedYear, out var year))
            {
                Model.SelectedYearForBericht = year;
            }

            return PartialView("BerichteFormPartialView", Model);
        }
    }
}