nhance_partner_be/app/Controllers/PolicyReportController.php

<?php

namespace App\Controllers;

use CodeIgniter\Controller;
use PhpOffice\PhpSpreadsheet\Spreadsheet;
use PhpOffice\PhpSpreadsheet\Writer\Xlsx;
use DateTime;

class PolicyReportController extends Controller
{
    public function downloadExcel()
    {
        $db = \Config\Database::connect();

        // -----------------------------
        // REQUEST PARAMS
        // -----------------------------
        $managerId = $this->request->getGet('manager_id');
        $fromDate  = $this->request->getGet('from_date');
        $toDate    = $this->request->getGet('to_date');
        $fromDate = DateTime::createFromFormat('d-m-Y', $fromDate)->format('Y-m-d 00:00:00');
        $toDate   = DateTime::createFromFormat('d-m-Y', $toDate)->format('Y-m-d 23:59:59');

        if (!$managerId || !$fromDate || !$toDate) {
            return $this->response->setJSON([
                'status'  => 'failed',
                'message' => 'manager_id, from_date and to_date are required'
            ]);
        }

        // -----------------------------
        // QUERY (100% Excel-aligned)
        // -----------------------------
        $data = $db->query("
            SELECT
                pos.pos_code                                   AS pos_code,
                pos.name                                       AS pos_name,
                pa.agent_code                                  AS ref_code,
                pp.created_on                                  AS inward_date,
                pa.name                                        AS partner_name,
                ins.short_name                                 AS insurer,
                pp.policy_number,
                pp.insured_name,
                pq.insurance_plan_type_id                      AS plan_type,
                pp.vehicle_type                                AS product,

                pp.od                                          AS od,
                pp.tp                                          AS tp,
                (IFNULL(pp.od,0) + IFNULL(pp.tp,0))            AS net_amount,

                (IFNULL(pp.cgst,0) + IFNULL(pp.sgst,0) + IFNULL(pp.igst,0)) AS service_tax,

                (IFNULL(pp.od,0) + IFNULL(pp.tp,0)
                 + IFNULL(pp.cgst,0) + IFNULL(pp.sgst,0) + IFNULL(pp.igst,0)
                ) AS total_amount,

                pm.value                                      AS payment_mode,
                CONCAT(pp.rto_state_code,'-',pp.rto_city_code) AS rto_loc,
                NULL                                          AS ncb_percent,
                pp.end_date                                   AS expire_date,

                pb.short_name                                 AS broker_code,
                ps.name                                       AS assigned_to,
                pp.manager_id                                 AS sales_manager,
                pa.name                                       AS sales_executive,
                pa.mobile                                     AS contact_no,
                pos.address,
                pos.pincode,

                pe.status                                     AS booking_status,
                pe.created_on                                 AS booking_date,
                pe.id                                         AS booking_ref_no,

                pp.agent_retention_rate                       AS grid_percent,
                pp.commission_amount                          AS grid_amount,
                pe.remarks                                    AS remark
            FROM partner_policy pp
            LEFT JOIN partner_agent pa ON pa.id = pp.agent_id
            LEFT JOIN partner_pos pos ON pos.id = pa.pos_id
            LEFT JOIN partner_quotation pq ON pq.id = pp.quotation_id
            LEFT JOIN insurers ins ON ins.id = pq.insurer_id
            LEFT JOIN partner_payment_mode_master pm ON pm.id = pq.payment_mode_id
            LEFT JOIN partner_enquiry pe ON pe.id = pp.enquiry_id
            LEFT JOIN partner_staff ps ON ps.id = pe.assigned_to
            LEFT JOIN partner_brokers pb ON pb.id = pe.broker_id
            WHERE pp.manager_id = ?
              AND pp.issued_date BETWEEN ? AND ?
            ORDER BY pp.created_on DESC
        ", [$managerId, $fromDate, $toDate])->getResultArray();

        // -----------------------------
        // EXCEL GENERATION
        // -----------------------------
        $spreadsheet = new Spreadsheet();
        $sheet = $spreadsheet->getActiveSheet();

        // EXACT HEADER FROM YOUR EXCEL
        $headers = [
            'POS CODE','POS NAME','REFF CODE','Inward Date','PARTNER NAME',
            'Insurer','Policy No','Issured Name','PLAN TYPE','Product',
            'A (OD)','B (TP)','A+B (NET)','S.TAX','TOTAL',
            'PAYMENT MODE','RTO LOC.','NCB %','Expire Date','BROKER CODE',
            'Assigned To','SALES MANAGER','SALES EXECUTIVE','CONTACT NO',
            'ADDRESS','PIN CODE','BOOKING STATUS','DATE OF BOOKING',
            'BOOKING REF NO','GRID %','GRID AMT','REMARK'
        ];

        // Header row
        $col = 'A';
        foreach ($headers as $header) {
            $sheet->setCellValue($col.'1', $header);
            $sheet->getColumnDimension($col)->setAutoSize(true);
            $col++;
        }

        // Data rows
        $row = 2;
        foreach ($data as $d) {
            $sheet->fromArray([
                $d['pos_code'],
                $d['pos_name'],
                $d['ref_code'],
                $d['inward_date'],
                $d['partner_name'],
                $d['insurer'],
                $d['policy_number'],
                $d['insured_name'],
                $d['plan_type'],
                $d['product'],
                $d['od'],
                $d['tp'],
                $d['net_amount'],
                $d['service_tax'],
                $d['total_amount'],
                $d['payment_mode'],
                $d['rto_loc'],
                $d['ncb_percent'],
                $d['expire_date'],
                $d['broker_code'],
                $d['assigned_to'],
                $d['sales_manager'],
                $d['sales_executive'],
                $d['contact_no'],
                $d['address'],
                $d['pincode'],
                $d['booking_status'],
                $d['booking_date'],
                $d['booking_ref_no'],
                $d['grid_percent'],
                $d['grid_amount'],
                $d['remark']
            ], null, "A$row");

            $row++;
        }

        // -----------------------------
        // DOWNLOAD RESPONSE
        // -----------------------------
        $fileName = 'Policy_Report_' . date('YmdHis') . '.xlsx';

        $response = $this->response;
        $response->setHeader('Content-Type', 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
        $response->setHeader('Content-Disposition', 'attachment; filename="'.$fileName.'"');
        $response->setHeader('Cache-Control', 'max-age=0');

        $writer = new Xlsx($spreadsheet);
        ob_start();
        $writer->save('php://output');
        $excelOutput = ob_get_clean();

        return $response->setBody($excelOutput);
    }
}