<?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)  // Old Query Don't Delete It. Any Doubt ask MG Bhai
        // -----------------------------
        // $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();

        // New Query 
        // This query is copied from enquiryList() in EnquiryController
        // to  refer this API URI = enquiry/enquiryList?manager_id=1&only_policy_data=true&from_date=18-12-2025&to_date=02-01-2026&staff_id=

        $sql = "SELECT 
                            pos.pos_code                                   AS pos_code,
                            pos.name                                       AS pos_name,
                            pa.agent_code                                  AS ref_code,
                            CASE 
                                WHEN pp.created_on IS NULL 
                                    OR pp.created_on = '0000-00-00 00:00:00'
                                THEN 'N/A'
                                ELSE DATE_FORMAT(pp.created_on, '%d-%m-%Y %h:%i %p')
                            END AS inward_date,
                            pa.name                                        AS partner_name,
                            ins.short_name                                 AS insurer, 
                            pp.policy_number,
                            pp.insured_name,
                            iptm.insurance_plan_type                       AS plan_type,
                            pp.vehicle_type                                AS product,
                            pp.product                                     AS product_type,
                            CASE 
                                WHEN pp.od IS NULL OR pp.od = '' THEN 0
                                ELSE pp.od
                            END AS od,
                            CASE 
                                WHEN pp.tp IS NULL OR pp.tp = '' THEN 0
                                ELSE pp.tp
                            END 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,
                            CASE 
                                WHEN pp.end_date IS NULL 
                                    OR pp.end_date = '0000-00-00 00:00:00'
                                THEN 'N/A'
                                ELSE DATE_FORMAT(pp.end_date, '%d-%m-%Y %h:%i %p')
                            END AS expire_date,
                            NULL                                           AS ncb_percent,
                            pb.short_name                                  AS broker_code,
                            ps.name                                        AS assigned_to,
                            ps2.name                                       AS sales_manager,
                            pse.name                                       AS sales_executive,
                            pse.mobile                                     AS contact_no,
                            pos.address,
                            pos.pincode,
                            pe.status                                      AS booking_status,
                            pe.id                                          AS enquiry_id,
                            pe.reg_no,
                            CASE 
                                WHEN pe.created_on IS NULL 
                                    OR pe.created_on = '0000-00-00 00:00:00'
                                THEN 'N/A'
                                ELSE DATE_FORMAT(pe.created_on, '%d-%m-%Y %h:%i %p')
                            END AS booking_date,
                            pe.id                                          AS booking_ref_no,
                            pp.agent_retention_rate                        AS grid_percent,
                            pp.commission_amount                           AS grid_amount,
                            pp.year_of_manufacture,
                            pp.weight                                      AS vehicle_weight,
                            pe.remarks                                     AS remark
                FROM partner_enquiry pe
                LEFT JOIN partner_agent pa ON pa.id = pe.agent_id
                LEFT JOIN partner_staff ps ON ps.id = pe.assigned_to
                LEFT JOIN partner_quotation pq ON pq.enquiry_id = pe.id AND pq.status = 'Accepted'
                LEFT JOIN insurers ins ON ins.id = pe.insurer_id
                LEFT JOIN partner_policy pp ON pp.quotation_id = pq.id
                LEFT JOIN partner_payment_mode_master pm ON pm.id = pq.payment_mode_id
                LEFT JOIN partner_pos pos ON pos.id = pa.pos_id
                LEFT JOIN partner_sales_executive pse ON pse.id = pa.sales_executive_id
                LEFT JOIN partner_staff ps2 ON ps2.id = pse.manager_id
                LEFT JOIN partner_brokers pb ON pb.id = pe.broker_id
                LEFT JOIN partner_insurance_plan_type_master iptm ON pq.insurance_plan_type_id = iptm.id
                WHERE pe.is_active = 1
                AND pe.is_quick_quote = 0
                AND pp.id IS NOT NULL
                AND pp.created_on BETWEEN ? AND ?
                AND pe.manager_id = ?";

            $bindings = [$fromDate, $toDate, $managerId];

            $search = $this->request->getGet('search');

            if (!empty($search)) {

                $searchTerm = '%' . strtolower(trim($search)) . '%';

                $sql .= " AND (
                    LOWER(ps.name) LIKE ?
                    OR LOWER(pa.name) LIKE ?
                    OR LOWER(ins.short_name) LIKE ?
                    OR LOWER(pe.reg_no) LIKE ?
                    OR LOWER(pp.insured_name) LIKE ?
                    OR CAST(pp.premium_amount AS CHAR) LIKE ?
                    OR LOWER(pm.value) LIKE ?
                    OR LOWER(pp.policy_number) LIKE ?
                )";

                // Bind search term 8 times
                for ($i = 0; $i < 8; $i++) {
                    $bindings[] = $searchTerm;
                }

                // YES / NO search support
                if (strtolower($search) === 'yes') {
                    $sql .= " OR pp.is_bds_pushed = 1";
                } elseif (strtolower($search) === 'no') {
                    $sql .= " OR pp.is_bds_pushed = 0";
                }
            }

            // ORDER BY must be LAST
            $sql .= " ORDER BY pe.created_on DESC";

            $query = $db->query($sql, $bindings);

            $data = $query->getResultArray();

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

        // enquiry_id,reg_no,year_of_manufacture

        // EXACT HEADER FROM YOUR EXCEL
        $headers = [
            'ENQUIRY ID','POS CODE','POS NAME','REFF CODE','PARTNER NAME','INWARD DATE',
            'INSURER','POLICY NO','REG NO','ISSURED NAME','PLAN TYPE','PRODUCT','PRODUCT TYPE','YEAR OF MFG','WEIGHT',
            'A (OD)','B (TP)','A+B (NET)','S.TAX','TOTAL',
            'PAYMENT MODE','RTO LOC.','NCB %','Expire Date','BROKER CODE',
            'ASSIDNED 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['enquiry_id'],
                $d['pos_code'],
                $d['pos_name'],
                $d['ref_code'],
                $d['partner_name'],
                $d['inward_date'],
                $d['insurer'],
                $d['policy_number'],
                $d['reg_no'],
                $d['insured_name'],
                $d['plan_type'],
                $d['product'],
                $d['product_type'],
                $d['year_of_manufacture'],
                $d['vehicle_weight'],
                $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);
    }
}