const express = require('express');
const router = express.Router();
const moment = require('moment');

const { mongo, Mongoose } = require('mongoose');
let Work=require('../models/works');
let Employee = require('../models/employee');
var utils = require('../js/utils');
const { default: mongoose } = require('mongoose');

// Add Devices ToRoute
router.get('/', utils.ensureAuthenticated,async function (req,res)  {
  const employees=await  Employee.find({'konyvelesre':'on','isSubcontractor':{$ne:'on'}},null,{sort: {name: 1}} );
  await employees.forEach(element => {

    const color = generateColorHsl(element.name, saturationRange, lightnessRange);
    const c=HSLToRGB(color.h,color.s,color.l);
    element.color=c;
    })
        res.render('gantt_holiday', {
                title: 'Szabadságok',
                employees:employees
              });            

   });

   router.get('/getcolors', utils.ensureAuthenticated,async function (req,res)  {
    const employees=await  Employee.find({'konyvelesre':'on'},null,{sort: {name: 1}} );
    var colors=[];
    await employees.forEach(element => {
  
      const color = generateColorHsl(element.name, saturationRange, lightnessRange);
      const c=HSLToRGB(color.h,color.s,color.l);
      colors.push(c);
      })
      res.send(colors);            
  
     });

const getHashOfString = (str) => {
    let hash = 0;
    for (let i = 0; i < str.length; i++) {
      // tslint:disable-next-line: no-bitwise
      hash = str.charCodeAt(i) + ((hash << 5) - hash);
    }
    hash = Math.abs(hash);
    return hash;
  };

  const normalizeHash = (hash, min, max) => {
    return Math.floor((hash % (max - min)) + min);
  };

  const generateHSL = (name, saturationRange, lightnessRange) => {
    const hash = getHashOfString(name);
    const h = normalizeHash(hash, 0, 360);
    const s = normalizeHash(hash, saturationRange[0], saturationRange[1]);
    const l = normalizeHash(hash, lightnessRange[0], lightnessRange[1]);
    return [h, s, l];
  };

  const HSLtoString = (hsl) => {
   // return `hsl(${hsl[0]}, ${hsl[1]}%, ${hsl[2]}%)`;
   return {'h':hsl[0],'s':hsl[1],'l':hsl[2]}
  };
  
const generateColorHsl = (id, saturationRange, lightnessRange) => {
    return HSLtoString(generateHSL(id, saturationRange, lightnessRange));
  };
  
  const getInitials = (user) => {
      return `${user.name.first[0]}${user.name.last[0]}`
  }
  
  const setValue = (functionFor) => {
      return (e) => {
        const value = parseInt(e.target.value);
      functionFor(value);
    }
  };
  
  const getRange = (value, range) => {
      return [Math.max(0, value-range), Math.min(value+range, 100)];
  }

  const saturation = 50;
  const lightness = 50;
  const range = 10;
  const saturationRange = getRange(saturation, range);
  const lightnessRange = getRange(lightness, range);
  	
  function HSLToRGB(h,s,l) {
  // Must be fractions of 1
  s /= 100;
  l /= 100;

  let c = (1 - Math.abs(2 * l - 1)) * s,
      x = c * (1 - Math.abs((h / 60) % 2 - 1)),
      m = l - c/2,
      r = 0,
      g = 0,
      b = 0;
  
    if (0 <= h && h < 60) {
      r = c; g = x; b = 0;  
    } else if (60 <= h && h < 120) {
      r = x; g = c; b = 0;
    } else if (120 <= h && h < 180) {
      r = 0; g = c; b = x;
    } else if (180 <= h && h < 240) {
      r = 0; g = x; b = c;
    } else if (240 <= h && h < 300) {
      r = x; g = 0; b = c;
    } else if (300 <= h && h < 360) {
      r = c; g = 0; b = x;
    }
    r = Math.round((r + m) * 255);
    g = Math.round((g + m) * 255);
    b = Math.round((b + m) * 255);
  
    //return {'r':r,'g':g,'b':b};
   return "rgb(" + r + "," + g + "," + b + ")";
  }

router.get("/data/:display/:year", async function(req, res){
    console.log('GANTT2');
    var data=[];
    moment.locale('HU');
    const display=req.params.display
    const year=req.params.year
    const employees=await  Employee.find({'konyvelesre':'on','isSubcontractor':{$ne:'on'}},null,{sort: {name: 1}} );

            await employees.forEach(element => {

                const color = generateColorHsl(element.name, saturationRange, lightnessRange);
                const c=HSLToRGB(color.h,color.s,color.l);
                if (element.konyvelesre=='on')
                {
                  element.holidayData.forEach(hd=>{
                      if (moment(hd.start_date,'DD.MM.YYYY').format('YYYY')==year || moment(hd.end_date,'DD.MM.YYYY').format('YYYY')==year)
                      {
                        var task={
                            id:hd._id,
                            
                            start:moment(hd.start_date,'DD.MM.YYYY').startOf('day').format('YYYY-MM-DD HH:mm:SS'),
                            end:moment(hd.end_date,'DD.MM.YYYY').add(1, 'days').toDate(),//.endOf('day').toDate(),
                            title:element.name,
                            allDay:true,
                            eventBackgroundColor: '#378006',//rgb(c.r,c.g,c.b), 
                            color: c,//'#378006',
                            display:display,
                            extendedProps: {
                              employeeId:element._id,
                            },
                        }
                        data.push(task);
                      }
                  })
                }
            });
            res.send(data);            

});

module.exports = router;