const Moment = require('moment');
const MomentRange = require('moment-range');
const moment = MomentRange.extendMoment(Moment);
const { mongo} = require('mongoose');

let WorkingTime = require('../models/workingtime');
let Work=require('../models/works');
let WorkReport = require('../models/workReportModel');
let Employee = require('../models/employee');

const munkaszunet=['2021.01.01','2021.03.15','2021.04.02','2021.04.05','2021.05.24','2021.08.20','2021.11.01','2021.12.24','2021.12.26',
                    '2022.01.01','2022.03.14','2022.03.15','2022.04.15','2022.04.18','2022.06.06',
                  '2023.01.01','2023.03.15','2023.04.07','2023.04.09','2023.04.10','2023.05.29','2023.10.23','2023.11.01','2023.12.25','2023.12.26',
                '2024.01.01','2024.03.15','2024.03.29','2024.04.01','2024.05.01','2024.05.20','2024.08.20','2024.10.23','2024.11.01','2024.12.24','2024.12.25','2024.12.26','2024.12.27',
              '2025.01.01','2025.04.18','2025.04.21','2025.05.01','2025.05.02','2025.06.09','2025.08.20','2025.10.23','2025.10.24','2024.12.25','2025.12.26'];

// Munkaszüneti napok
const _getMunkaszunet=function (cmonth)
{
  var t=[];
  munkaszunet.forEach(function(a){
    if (moment(a,'YYYY.MM.DD').isSame(moment(cmonth,'YYYY.MM'), 'month')) //true if dates are in the same month
    {
 	    t.push(moment(a,'YYYY.MM.DD').format('YYYY.MM.DD.'));
    }
})
 //{date: '2021.01.06', isHoliday: true}
//console.log(t);
return t;
}

function getDateRangeSickPay(startDate, endDate,mindate, dateFormat) {
  var dates = [],
      //selectedMonth=moment(mindate,'YYYY.DD').month();
      start=moment(startDate,'DD.MM.YYYY')
      end = moment(endDate,'DD.MM.YYYY');

      diff = end.diff(start, 'days')+1;


  if(!start.isValid() || !end.isValid() || diff <= 0) {
      return;
  }

  for(var i = 0; i < diff; i++) {

     if (moment(start).format('YYYY.MM')===mindate)
     {
  //workDays.push({date:element.date,isWeekend:isWeekend,location:element.location,notes:element.notes,locations:[{arriveLoc:element.location,getawayLoc:element.locationStop}],startStop:[{start:element.timeArrive,stop:element.timeGetaway}],fullHours:element.workHours,hours:0,overTime:0});
      dates.push({date:start.format(dateFormat),isSickpay:true})
     }
      start.add(1,'d');
  }

  return dates;
};

function getDateRange(startDate, endDate,mindate, dateFormat) {
  var dates = [],
      //selectedMonth=moment(mindate,'YYYY.DD').month();
      start=moment(startDate,'DD.MM.YYYY')
      end = moment(endDate,'DD.MM.YYYY');

      diff = end.diff(start, 'days')+1;


  if(!start.isValid() || !end.isValid() || diff <= 0) {
      return;
  }

  for(var i = 0; i < diff; i++) {

     if (moment(start).format('YYYY.MM')===mindate)
     {
  //workDays.push({date:element.date,isWeekend:isWeekend,location:element.location,notes:element.notes,locations:[{arriveLoc:element.location,getawayLoc:element.locationStop}],startStop:[{start:element.timeArrive,stop:element.timeGetaway}],fullHours:element.workHours,hours:0,overTime:0});
      dates.push({date:start.format(dateFormat),isHoliday:true})
     }
      start.add(1,'d');
  }

  return dates;
};

var _oneDayCalculate=function (fullTime)
{
  const lunchtime=1*60
  const expectedWorkHours=8*60
  const overHourThreshold=1*60  
  //var fullTime=moment(stop,"YYYY.MM.DD. HH.mm").diff(moment(start,"YYYY.MM.DD. HH.mm"),"minutes")
  const fl=fullTime-lunchtime; // Teljes idő - ebéd idő
  
  const oh=fl-expectedWorkHours;
  const wh=fl-(fl-expectedWorkHours);
  var overHours=0;
  if (oh>overHourThreshold) overHours=oh; else overHours=0;
  const workHours=fl>=expectedWorkHours?wh:fl  
  return {workHours:workHours,overHours:overHours,lunchtime:lunchtime}
}

// Szabadság szűrés egy munkavállalóra dátum vég alapján.
var _getHolidayListById=async function (employeeId,dateEndsWith,mindate)//,callback)
{
  
  var results = await Employee.aggregate([
    { $match: {_id: mongo.ObjectId(employeeId)}},
    { $unwind: '$holidayData'},
    { $match: {$or:[{'holidayData.start_date': {$regex: dateEndsWith, $options:'/g/'}},{'holidayData.end_date': {$regex: dateEndsWith, $options:'/g/'}}]}},
    //{ $group: {_id: '$_id', list: {$push: {'start_date':'$holidayData.start_date', 'end_date':'$holidayData.end_date'}}}}
    { $group: {_id: '$_id', list: {$push: '$holidayData'}}}
  ] 
  )
  var days=[];
  if (results.length>0)
  {
  console.log(results);
  results[0].list.forEach(element=>{
    var subDay=getDateRange(element.start_date,element.end_date,mindate,'YYYY.MM.DD');
    days.push.apply(days,subDay);
    
  })
}
  return days
}

// Táppénz szűrés egy munkavállalóra dátum vég alapján.
var _getSickpayListById=async function (employeeId,dateEndsWith,mindate)//,callback)
{
  
  var results =await Employee.aggregate([
    { $match: {_id: mongo.ObjectId(employeeId)}},
    { $unwind: '$sickpayData'},
    { $match: {$or:[{'sickpayData.start_date': {$regex: dateEndsWith, $options:'/g/'}},{'sickpayData.end_date': {$regex: dateEndsWith, $options:'/g/'}}]}},
    { $group: {_id: '$_id', list: {$push: '$sickpayData'}}}
  ])
  var days=[];
  if (results.length>0)
  {
  console.log(results);
  results[0].list.forEach(element=>{
    var subDay=getDateRangeSickPay(element.start_date,element.end_date,mindate,'YYYY.MM.DD');
    days.push.apply(days,subDay);
    
  })  
  }
  return days

}

// workReport By User lekérdezés
async function getWorkReportById(employeeId,mindate){

  var dr_firstDay= moment(mindate,"YYYY.MM").startOf('month').toDate();
  var dr_lastDay = moment(mindate,"YYYY.MM").endOf('month').toDate();
  
   const result= await WorkReport.aggregate([
    {$match: {"date":{$gte: dr_firstDay, $lte: dr_lastDay}}},
    //{$match: {"workId": mongo.ObjectId("6715f6ca6908a157c7d1f468")}},
       {
    
            $unwind: "$workFlow"
    
        },
         { "$unwind": "$workFlow.employeeList" },
      {$match: {"workFlow.employeeList.employeeId": mongo.ObjectId(employeeId)}},   
    
             {$group: { _id:{
                'wf': '$employeeList.workFlow',
                 'wid':  '$_id',
                'name': '$workFlow.employeeList.name',
             },
              'id':{$first:  '$_id'},
             'date':{$first:'$date'},
             'name': {$first:'$workFlow.employeeList.name'},
                'wf':{$first: '$workFlow.Title'},
                'wt':{$first: '$workTitle'}
             //'nm':{$push: {name:'$employee.name', wf:'$employeeList.workFlow'}}
             },
             },
         {
        // cleanup
        $project: {
          _id: false,
        }
      }
    
    
    ])
      if (result.length){
        return result
      }
      else
      {
        return []
      }
    
    
    
}

// Munkaidő lekérdezés
function getWorkTimeListById(employeeId,mindate,callback)
{
  var date = new Date();
  var query={};

// Ehavi esedékes

   var firstDay= moment(mindate,"YYYY.MM").startOf('month').format("YYYY.MM.DD.");
   var lastDay = moment(mindate,"YYYY.MM").endOf('month').format("YYYY.MM.DD.");
   var dr_firstDay= moment(mindate,"YYYY.MM").startOf('month').format("YYYY.MM.DD");
   var dr_lastDay = moment(mindate,"YYYY.MM").endOf('month').format("YYYY.MM.DD");
    //query={$and:[{'state':'ENDED','date': {$gte : firstDay,$lte: lastDay},'employeeId': employeeId}]};
    query={$and:[{'date': {$gte : firstDay,$lte: lastDay},'employeeId': employeeId}]};

    WorkingTime.find(query,null,function(err, wt){
      if (err)
      {
        callback(err);
      }
      else {
        Work.aggregate([
          {$unwind: '$dailyReport'},
          {
              "$match":{ 
                  "dailyReport.employeeList": mongo.ObjectId(employeeId)
                  },
              
           },    
                    
             {"$match": {"dailyReport.date": {$gte: dr_firstDay, $lte: dr_lastDay} }},
                 {$group: { _id: '$dailyReport._id','name': {$first: '$title'},'wid': {$first: '$_id'},'date': {$first: '$dailyReport.date'}}},
         ], function(err,dr){
          if (err)
          {
            callback(err);
          }else
          {
            wt.rd=dr;
           // wt.wr=workReport // WorkReport Lekérése.;
            callback(null,wt);
          }
         })
      
      }
    });  
}

// Egy havi munkaidő összegzés
var _sumOfMonth=async function(employee_id,mindate,callback)
{
  var msz=_getMunkaszunet(mindate);

  workReport=await getWorkReportById(employee_id,mindate)//.then(workReport=>{ // WorkReport Lekérése.
  getWorkTimeListById(employee_id,mindate,function(err,wt){
    if (err)
    {
      console.log(err);
      callback(err);
    }
    else {
      var workDays=[];
        //wt.forEach(function(element)
        for (var element of wt)
        {
          var isMunkaszunet=false;//hoursToday=0;
          var drName='';
          var dwr=''
          var day = moment(element.date,'YYYY.MM.DD.').day();
          var drDate = moment(element.date,'YYYY.MM.DD.').format('YYYY.MM.DD');
          var isWeekend = (day === 6) || (day === 0);    // 6 = Saturday, 0 = Sunday
          var latS=element.latitudeS;
          var lonS=element.longitudeS;
          var latE=element.latitudeE;
          var lonE=element.longitudeE;
          var workOnMunkaszunet=false;
          
          
          //var cNotes="";
          //var notes="";
          
          var wr={}
          if (workReport.length){
          //  wr=workReport.find(wrelement => wrelement.date===new Date(drDate))
            workReport.forEach(function(wrelement){
              ///console.log(`Itemdate: ${wrelement.date} CurrDate: ${new Date(drDate)}`)
              if (new Date(wrelement.date).getTime()===new Date(drDate).getTime())
              {
               // console.log("Egyenlő!\n")
                wr=wrelement;
              }
            })
            
           // if (wr!={})
          //  console.log(wr.date)
          }
          var dr=wt.rd.filter(element => element.date==drDate)
            if (typeof element.latitudeS==='undefined') latS='N/A'
            if (typeof element.longitudeS==='undefined') lonS='N/A'
            if (typeof element.latitudeE==='undefined') latE='N/A'
            if (typeof element.longitudeE==='undefined') lonE='N/A'

            // Ha hétköznap
            var wdays=workDays.find(e=>e.date===element.date);
            if (wdays)
            { // Már van ilyen nap
              
              wdays.startStop.push({id:element._id,start:element.timeArrive,stop:element.timeGetaway});
              wdays.locations.push({
                arriveLoc:element.location,
                getawayLoc:element.locationStop,
                arriveCoords:{lat:latS,lon:lonS},
                getavayCoords:{lat:latE,lon:lonE}
              });
              wdays.notes.push({userNote:element.notes, companyNote: element.company_notes});
              
              wdays.fullHours+=element.workHours;
              }
            else
            {
              
              if (typeof wr==='undefined') 
              {
                dwr='';
              }
              else
              {
                dwr=wr;
              }
              if (typeof dr==='undefined') 
              {
                drName='';
              }
              else
              {
                drName=dr;
              }
              // Még nincs ilyen nap, hozzáadjuk
              const idxmsz=msz.indexOf(element.date);
              if (idxmsz!==-1)
              {
                isMunkaszunet=true;
                element.company_notes="Ünnep"
                workOnMunkaszunet=true;
                element.isMunkaszunet=true
                msz.splice(idxmsz, 1);
              }
              workDays.push({
                date:element.date,
                isMunkaszunet:isMunkaszunet,
                workOnMunkaszunet:element.workOnMunkaszunet,
                isHoliday:false,
                isSickpay:false,
                isWeekend:isWeekend,
                state:element.state,
                location:element.location,
                notes:[{
                  userNote: element.notes,
                  companyNote: element.company_notes ?? "-"
                }],
                companyNotes: element.company_notes ?? "",
                locations:[{
                  arriveLoc:element.location,
                  getawayLoc:element.locationStop,
                  arriveCoords:{lat:element.latitudeS,lon:element.longitudeS},
                  getavayCoords:{lat:element.latitudeE,lon:element.longitudeE}                  
                }],
                startStop:[{
                  id:element._id,
                  start:element.timeArrive,
                  stop:element.timeGetaway
                }],
                fullHours:element.workHours,
                hours:0,
                overTime:0,
                dailyReport:drName,
                workReport:dwr
              });
            }
            
                 
        }
        msz.forEach(function(munkaszunet){
          workDays.push({date:munkaszunet,isMunkaszunet:true,hours:480,overTime:0,Surrogate:0,fullHours:0,startStop:[],locations:[],notes:[{userNote:'', companyNote: 'Ünnep'}]})
        })
        callback(null,workDays);
      }
    })//})
  
}

var _getAccessDetails=async function(id,mindate,callback) {

    var holidaysArray=await _getHolidayListById(id,moment(mindate,'YYYY.MM').format('MM.YYYY'),mindate)//,function(err,holidaysArray){
    var sickpaysArray=await _getSickpayListById(id,moment(mindate,'YYYY.MM').format('MM.YYYY'),mindate)


    _sumOfMonth(id,mindate,function(err,som){
      if (err)
      {
        console.log(err);
        callback(err);
      }
      else {
        var month={overTime:0,workHours:0,fullWorkHours:0,sickPays:0,holidays:0};
        //var weekend={overTime:0,workHours:0,fullWorkHours:0,days:0};
        var weekend={
            Saturday:{overTime:0,workHours:0,fullWorkHours:0,days:0,Surrogate:0},
            Sunday:{overTime:0,workHours:0,fullWorkHours:0,days:0,Surrogate:0}
        }      
        //var monthOverTime=0;
        //var monthWorkHours=0;
          //som.forEach(function(element)
          for (var element of som)
          {
            var hoursToday=0;
            var day = moment(element.date,'YYYY.MM.DD.').day();
            
            if (element.state=="ENDED")//element.startStop[element.startStop.length-1].stop!='-')
            {
              // Napi idő kiszámítása
              var dayWorkHours=_oneDayCalculate(element.fullHours);
    
              element.lunchtime=dayWorkHours.lunchtime;     
              if (element.isWeekend)
              {

                if (day===6) // Szombat
                {
                  element.hours=(dayWorkHours.workHours);
                  element.overTime=(dayWorkHours.overHours);  
                  element.Surrogate=Math.ceil((element.hours+element.overTime)*0.5);
                  weekend.Saturday.workHours+=(element.hours*1.5);
                  weekend.Saturday.overTime+=(element.overTime*1.5);
                  weekend.Saturday.fullWorkHours+=((element.hours+element.overTime)*1.5);
                  weekend.Saturday.days+=1; 
                  weekend.Saturday.Surrogate+=element.Surrogate; 
                  
                }
                if (day===0) // Vasárnap
                {
                  element.hours=dayWorkHours.workHours;
                  element.overTime=dayWorkHours.overHours;  
                  element.Surrogate=(element.hours+element.overTime)
                  weekend.Sunday.workHours+=element.hours;
                  weekend.Sunday.overTime+=element.overTime;
                  weekend.Sunday.fullWorkHours+=(element.hours+element.overTime);
                  weekend.Sunday.days+=1; 
                  weekend.Sunday.Surrogate+=element.Surrogate;
                }
            
              }
              else
              {
                // Ha hétköznap
                element.hours=dayWorkHours.workHours;//element.hours=540;
                element.overTime=dayWorkHours.overHours;//element.fullHours-element.hours
                element.Surrogate=0;
                month.workHours+=element.hours;
                month.overTime+=element.overTime;
                month.fullWorkHours+=(element.hours+element.overTime);

              }    // is Weekend
            }    
            else
            {
              element.lunchtime=60;
              element.Surrogate=0;
            }
      
          }
          var ja;
          var msz=_getMunkaszunet(mindate);
    
          if (som.length>0) {
            ja = som.concat(holidaysArray);
            ja=ja.concat(sickpaysArray);
          }
          else
          { 
            ja=holidaysArray;
          }
          ja.sort(function(a, b) {
            return moment(a.date,'YYYY.MM.DD') - moment(b.date,'YYYY.MM.DD');
          });
          month.sickPays=sickpaysArray.length;
          month.holidays=holidaysArray.length;
        //callback(null,som,month,weekend);
        callback(null,ja,month,weekend);
      }
    });
  };

  module.exports={
    getMunkaszunet:_getMunkaszunet,
    sumOfMonth: _sumOfMonth,
    getAccessDetails: _getAccessDetails,
    getHolidayListById: _getHolidayListById,
    getSickpayListById: _getSickpayListById,
    oneDayCalculate: _oneDayCalculate,
  }