<?php
if (!function_exists('generate_po_number')) {
    function generate_po_number($last_pono)
    {
        $currentYear = date("Y");
        $shortenFinYear =  get_shorten_financial_year();// Get it From - DateTime Helper refer it.
            
        // if(here have to check fin year if there is a change means both are same means ){
        //     $counter = $counter + 1;
        // }else{
        //     $counter = 1;
        // }

        $result = explode('/', $last_pono);
        $requestedFinYear = $result[1];
        $leftPad = "RIPL";
        $digit = 5;

        if($requestedFinYear == $shortenFinYear){
            $number = ((int)$result[2])+1;
            $PoNo = $leftPad . '/' . $shortenFinYear . '/' . str_pad($number, $digit, '0', STR_PAD_LEFT);
        }else{
            $counter = 1;
            $PoNo = $leftPad . '/' . $shortenFinYear . '/' . str_pad($counter, $digit, '0', STR_PAD_LEFT);
        }
        return $PoNo;
    }
}

if (!function_exists('generate_igr_number')) {
    function generate_igr_number($last_igrno)
    {
        $shortenFinYear =  get_shorten_financial_year();

        if (preg_match('/^\w+\/\d+-\d+\/\d+$/', $last_igrno)) {
            // echo $last_igrno;
            $type = 1; // IGRNO/25-26/00001 // 2025 april onwards karthick asked to changed this type. 
        } elseif (preg_match('/^\w+-\d+$/', $last_igrno)) {
            // echo $last_igrno;
            $type = 2; // IGRNO-0001  // karthick asked to checked this type 2023- 2025 april
        } else {
            // echo $last_igrno;
            $type = 3; // IGRNO00001 // very first time we followed this type
        }

        if ($type == 1) {
            $result = explode('/', $last_igrno);
            $requestedFinYear = $result[1];
            $leftPad = "IGR";
            $digit = 4;

                if($requestedFinYear == $shortenFinYear){ // here i am comparing the shoren fin year
                    $number = ((int)$result[2])+1;
                    $IgrNo = $leftPad . '/' . $shortenFinYear . '/' . str_pad($number, $digit, '0', STR_PAD_LEFT);
                }else{
                    // here not same means ressetted type 1 format 
                    $counter = 1;
                    $IgrNo = $leftPad . '/' . $shortenFinYear . '/' . str_pad($counter, $digit, '0', STR_PAD_LEFT);
                }
                return $IgrNo;
        }else{
            // type 2 and type 3 is converted into type 1 format
            $leftPad = "IGR";
            $digit = 5;
            $counter = 1;
            $IgrNo = $leftPad . '/' . $shortenFinYear . '/' . str_pad($counter, $digit, '0', STR_PAD_LEFT);
            return $IgrNo;
        }
    }
}

if (!function_exists('generate_non_igr_number')) {
    function generate_non_igr_number($last_non_igr)
    {
            $shortenFinYear =  get_shorten_financial_year();// Get it From 

            $result = explode('/', $last_non_igr);
            $requestedFinYear = $result[1];
            $leftPad = "NonIGR";
            $digit = 3;

            if($requestedFinYear == $shortenFinYear){
                $number = ((int)$result[2])+1;
                $NonIgrNo = $leftPad . '/' . $shortenFinYear . '/' . str_pad($number, $digit, '0', STR_PAD_LEFT);
            }else{
                $counter = 1;
                $NonIgrNo = $leftPad . '/' . $shortenFinYear . '/' . str_pad($counter, $digit, '0', STR_PAD_LEFT);
            }
            return $NonIgrNo;
    }
}

function generate_amendment_po_number($PoNo, $increment = 1) {
 if (strpos($PoNo, '.') !== false) {
   list($base, $decimal) = explode('.', $PoNo);
   preg_match('/^0*(\d+)$/', $decimal, $matches);
   $numeric_part = isset($matches[1]) ? $matches[1] : '';
   $new_numeric_part = intval($numeric_part) + $increment;
         
   // Determine the number of leading zeros based on the original numeric part length
   $new_decimal_length = strlen($numeric_part) > 1 ? strlen($numeric_part) : 2;
   $new_decimal = str_pad($new_numeric_part, $new_decimal_length, '0', STR_PAD_LEFT);
         
   return $base . '.' . $new_decimal;
 } else {
    return $PoNo . '.01';
 }
}
?>