<?php

namespace Biukop;

class XeroOauth2Timesheet
{
    private $oauth2 ;
    private $apiPayrollAu ;
    private $start_date;
    private $end_date;
    private $remote_timesheets;
    private $local_timesheets =[];
    private $buddy_timesheets =[];
    private $warning_timesheets =[];
    public function __construct($oauth2, $end_date){
        $this->oauth2 = $oauth2;
        $this->apiPayrollAu = $this->oauth2->get_payroll_au_instance();
        $this->end_date = $end_date;
        $this->start_date = $this->cal_start(); //set start_date;
        $this->get_remote_timesheets();
    }


    private function cal_start(){
        $d = new \DateTime($this->end_date);
        $d->modify("-13 days");
        return  $d->format("Y-m-d");
    }

    public function refresh_remote(){
        $this->get_remote_timesheets();
    }

    private function get_remote_timesheets()
    {
        $api = $this->oauth2->get_payroll_au_instance();
        $where = 'EndDate==DateTime.Parse("'. $this->end_date .'")';
        $result = $api->getTimeSheets($this->oauth2->getTenantId(), null, $where, null, null);
        $this->remote_timesheets =$result->getTimeSheets();
    }

    public function get_xero_timesheet()
    {
        return $this->remote_timesheets;
    }

    public function get_local_timesheet()
    {
        return $this->local_timesheets;
    }

    public function set_local_timesheet($lines)
    {

        $this->local_timesheets = [];
        //convert $val to Timesheet format;
        foreach ($lines as $staff_login => $rateshours){
            $ts = "";
            if (array_key_exists($staff_login, $this->local_timesheets)){
                $ts = $this->local_timesheets[$staff_login];
            }else{
                $ts = new \XeroAPI\XeroPHP\Models\PayrollAu\Timesheet;
                $ts->setEmployeeID($staff_login);
                $ts->setTimeSheetID($this->get_timesheet_id_by_employee_id($staff_login));
                $ts->setStartDate($this->start_date);
                $ts->setEndDate($this->end_date);
                $ts->setStatus(\XeroAPI\XeroPHP\Models\PayrollAu\TimesheetStatus::DRAFT);
            }
            //adding lines
	    $tsLines=[];
            foreach ($rateshours as $rateId => $hours)
            {
                $ts_line = new \XeroAPI\XeroPHP\Models\PayrollAu\TimesheetLine;
                $ts_line->setEarningsRateID($rateId);
                $numOfUnits =[];
                for ($i=0; $i<14; $i++){
                    $numOfUnits[]=$hours[$i];
                }
                $ts_line->setNumberOfUnits($numOfUnits);
                $tsLines[] = $ts_line;
                $ts->setTimesheetLines($tsLines);
            }
            //update this timesheet;
            $this->local_timesheets[$staff_login] = $ts;
        }
    }
    private function get_timesheet_id_by_employee_id($id)
    {
        foreach ($this->remote_timesheets as $ts)
        {
            $staff_login = $ts->getEmployeeID();
            if($staff_login == $id){
                return $ts->getTimesheetID();
            }
        }
        return NULL;
    }

    public function save_to_xero()
    {
        $to_create=[];
        $to_save=[];
        foreach ( $this->local_timesheets as $t){
            $buddy = $this->get_buddy_timesheet_by_ts($t);
            if ($buddy != NULL && $buddy->getStatus() != "DRAFT"){
                continue;//we encountered approved timesheet;
            }
            if ( trim($t->getTimeSheetId() ) != "" ){
                $to_save[]=$t;
            }else{
                $to_save[] = $t; // TODO: maybe update will work for new timesheet
                // $to_create[]= $t;
            }
        }
        //empty remote timesheet which are not available in local
        //
        //some of buddy timesheets might be removed from local already
        //we cannot delete it but we can set it to 0 hours
        //
        foreach ($this->remote_timesheets as $ts)
        {
            $staff_login = $ts->getEmployeeID();
            if (!array_key_exists($staff_login, $this->local_timesheets)){//not found
                //we create empty timesheets for him/her
                $empty = new \XeroAPI\XeroPHP\Models\PayrollAu\Timesheet;
                $empty->setEmployeeID($staff_login);
                $empty->setTimeSheetID($ts->getTimesheetID());
                $empty->setStartDate($this->start_date);
                $empty->setEndDate($this->end_date);
                $empty->setStatus(\XeroAPI\XeroPHP\Models\PayrollAu\TimesheetStatus::DRAFT);

                foreach($ts->getTimesheetLines() as $line){
                    $eid = $line->getEarningsRateID();
                    $zeroline= $this->create_empty_timesheet_lines($eid);
                    $zerolines[] = $zeroline;
                    $empty->setTimesheetLines($zerolines);
                }

                if ( $ts->getStatus() == "DRAFT" ){//good, we can save it;
                    $to_save[] = $empty;//add it to save
                }else{
                    $staff_name = \Biukop\AcareOffice::get_user_name_by_login($staff_login);
                    $msg = sprintf("%s : %s is APPROVED, but needs to be empty it",
                        $staff_name,
                        $ts->getTimeSheetID());
                    \Biukop\AcareOffice::log($msg);
                }
            }
        }
        $this->apiPayrollAu->createTimesheet($this->oauth2->getTenantId(),$to_save);
    }

    public function approve_all(){
        $to_save=[];
        foreach ( $this->remote_timesheets as $t){
            if($t->getStatus() == 'DRAFT'){
                $to_save[]=$t;
            }
        }
        $this->apiPayrollAu->createTimesheet($this->oauth2->getTenantId(), false);
    }

    private function get_buddy_timesheet_by_ts($t)
    {
        $employee_id = $t->getEmployeeID();
        $start  = $t->getStartDate();
        $end  = $t->getEndDate();
        return $this->get_buddy_timesheets($employee_id, $start, $end);
    }

    public function get_buddy_timesheets($employee_id, $start, $end)
    {
        foreach ($this->remote_timesheets as $t){
            if ( $t->getEmployeeID() == $employee_id &&
                $t->getStartDateAsDate()->format('Y-m-d') ==  $start &&
                $t->getEndDateAsDate()->format('Y-m-d') == $end )
            {
                return  $t;
            }
        }
        return NULL; //not found;
    }

    private function create_empty_timesheet_lines($EarningsRateID)
    {
        $unit = [];
        for ($i=0; $i<14; $i++)
            $unit[] = 0;

        $line = new \XeroAPI\XeroPHP\Models\PayrollAu\TimesheetLine;
        $line->setEarningsRateID($EarningsRateID);
        $line->setNumberOfUnits($unit);
        return $line;
    }
}