<?php

namespace Modules\Internal\Http\Controllers\Api;

use App\Helpers\Helper;
use App\Models\Corporate;
use Illuminate\Http\Request;
use Illuminate\Routing\Controller;
use Illuminate\Support\Facades\DB;
use Box\Spout\Writer\Common\Creator\WriterEntityFactory;
use Illuminate\Support\Facades\Storage;
use PhpOffice\PhpSpreadsheet\Spreadsheet;
use PhpOffice\PhpSpreadsheet\Writer\Xlsx;
use PhpOffice\PhpSpreadsheet\Style\NumberFormat;
use PhpOffice\PhpSpreadsheet\Style\Alignment;
use PhpOffice\PhpSpreadsheet\Style\Border;
use PhpOffice\PhpSpreadsheet\Style\Fill;

class PrimayanMedicareController extends Controller
{
    /**
     * List transactions for Primayan Medicare (corporate code: PRAY)
     */
    public function index(Request $request)
    {
        $limit = $request->has('per_page') ? $request->input('per_page') : 10;

        $corporate = Corporate::where('code', 'PRAY')->first();

        if (!$corporate) {
            return response()->json([
                'message' => 'Corporate Primayan Medicare (PRAY) not found',
                'data' => []
            ], 404);
        }

        // Subquery to aggregate amounts from request_log_benefits
        $subQueryAmount = DB::table('request_log_benefits')
            ->select('request_log_id',
                DB::raw('SUM(amount_incurred) as total_incurred'),
                DB::raw('SUM(amount_approved) as total_approved'),
                DB::raw('SUM(excess_paid) as total_excess'))
            ->whereNull('deleted_at')
            ->groupBy('request_log_id');

        $query = DB::table('claim_requests')
            ->join('members', 'claim_requests.member_id', '=', 'members.id')
            ->join('corporate_employees', 'corporate_employees.member_id', '=', 'members.id')
            ->leftJoin('organizations', 'claim_requests.organization_id', '=', 'organizations.id')
            ->leftJoin('claims', 'claim_requests.claim_id', '=', 'claims.id')
            ->leftJoin('request_logs', 'claim_requests.request_log_id', '=', 'request_logs.id')
            ->leftJoinSub($subQueryAmount, 'log_amounts', function ($join) {
                $join->on('request_logs.id', '=', 'log_amounts.request_log_id');
            })
            ->leftJoin('plans', 'claims.plan_id', '=', 'plans.id')
            ->leftJoin('benefits', 'claims.benefit_id', '=', 'benefits.id')
            ->where('corporate_employees.corporate_id', $corporate->id)
            ->whereNull('corporate_employees.deleted_at')
            ->whereNull('claim_requests.deleted_at')
            ->when($request->input('search'), function ($query, $search) {
                $query->where(function ($query) use ($search) {
                    $query->orWhere('members.name', 'like', "%" . $search . "%")
                        ->orWhere('members.member_id', 'like', "%" . $search . "%")
                        ->orWhere('claim_requests.code', 'like', "%" . $search . "%")
                        ->orWhere('corporate_employees.nik', 'like', "%" . $search . "%");
                });
            })
            ->when($request->input('start_date'), function ($query, $start_date) {
                $query->where('claim_requests.created_at', '>=', $start_date);
            })
            ->when($request->input('end_date'), function ($query, $end_date) {
                $query->where('claim_requests.created_at', '<=', $end_date . ' 23:59:59');
            })
            ->when($request->input('status'), function ($query, $status) {
                if ($status !== 'all') {
                    $query->where('claim_requests.status', $status);
                }
            })
            ->when($request->input('provider_id'), function ($query, $provider_id) {
                if ($provider_id !== 'all') {
                    $query->where('claim_requests.organization_id', $provider_id);
                }
            })
            ->select(
                'claim_requests.id',
                'claim_requests.code as request_code',
                'claim_requests.status',
                'claim_requests.created_at as request_date',
                'claim_requests.service_code',
                'claims.code as claim_code',
                'request_logs.code as log_code',
                DB::raw('COALESCE(log_amounts.total_incurred, claims.amount_incurred, 0) as amount_incurred'),
                DB::raw('COALESCE(log_amounts.total_approved, claims.amount_approved, 0) as amount_approved'),
                DB::raw('COALESCE(claims.amount_not_approved, 0) as amount_not_approved'),
                DB::raw('COALESCE(log_amounts.total_excess, claims.excess_paid, 0) as excess_paid'),
                'claims.benefit_code',
                'claims.benefit_desc',
                'members.name as member_name',
                'members.member_id as member_number',
                'members.birth_date',
                'members.gender',
                'corporate_employees.nik',
                'corporate_employees.branch_code',
                'organizations.name as provider_name',
                'plans.code as plan_code',
                'benefits.code as benefit_code_ref'
            )
            ->orderBy('claim_requests.created_at', 'desc');

        $results = $query->paginate($limit)->appends($request->all());

        // Get Providers for filter
        $providers = DB::table('claim_requests')
            ->join('members', 'claim_requests.member_id', '=', 'members.id')
            ->join('corporate_employees', 'corporate_employees.member_id', '=', 'members.id')
            ->join('organizations', 'claim_requests.organization_id', '=', 'organizations.id')
            ->where('corporate_employees.corporate_id', $corporate->id)
            ->whereNull('claim_requests.deleted_at')
            ->select('organizations.id', 'organizations.name')
            ->groupBy('organizations.id', 'organizations.name')
            ->get();

        return Helper::responseJson([
            'results' => Helper::paginateResources($results),
            'providers' => $providers,
        ]);
    }

    /**
     * Export transactions to Excel
     */
    public function export(Request $request)
    {
        $corporate = Corporate::where('code', 'PRAY')->first();

        if (!$corporate) {
            return response()->json([
                'message' => 'Corporate Primayan Medicare (PRAY) not found',
            ], 404);
        }

        $exportType = $request->input('export_type', 'list');

        if ($exportType === 'summary') {
            return $this->exportSummary($corporate);
        }

        // Subquery to aggregate amounts from request_log_benefits
        $subQueryAmount = DB::table('request_log_benefits')
            ->select('request_log_id',
                DB::raw('SUM(amount_incurred) as total_incurred'),
                DB::raw('SUM(amount_approved) as total_approved'),
                DB::raw('SUM(excess_paid) as total_excess'))
            ->whereNull('deleted_at')
            ->groupBy('request_log_id');

        $results = DB::table('claim_requests')
            ->join('members', 'claim_requests.member_id', '=', 'members.id')
            ->join('corporate_employees', 'corporate_employees.member_id', '=', 'members.id')
            ->leftJoin('organizations', 'claim_requests.organization_id', '=', 'organizations.id')
            ->leftJoin('claims', 'claim_requests.claim_id', '=', 'claims.id')
            ->leftJoin('request_logs', 'claim_requests.request_log_id', '=', 'request_logs.id')
            ->leftJoinSub($subQueryAmount, 'log_amounts', function ($join) {
                $join->on('request_logs.id', '=', 'log_amounts.request_log_id');
            })
            ->leftJoin('plans', 'claims.plan_id', '=', 'plans.id')
            ->leftJoin('benefits', 'claims.benefit_id', '=', 'benefits.id')
            ->where('corporate_employees.corporate_id', $corporate->id)
            ->whereNull('corporate_employees.deleted_at')
            ->whereNull('claim_requests.deleted_at')
            ->when($request->input('search'), function ($query, $search) {
                $query->where(function ($query) use ($search) {
                    $query->orWhere('members.name', 'like', "%" . $search . "%")
                        ->orWhere('members.member_id', 'like', "%" . $search . "%")
                        ->orWhere('claim_requests.code', 'like', "%" . $search . "%")
                        ->orWhere('corporate_employees.nik', 'like', "%" . $search . "%");
                });
            })
            ->when($request->input('start_date'), function ($query, $start_date) {
                $query->where('claim_requests.created_at', '>=', $start_date);
            })
            ->when($request->input('end_date'), function ($query, $end_date) {
                $query->where('claim_requests.created_at', '<=', $end_date . ' 23:59:59');
            })
            ->when($request->input('status'), function ($query, $status) {
                if ($status !== 'all') {
                    $query->where('claim_requests.status', $status);
                }
            })
            ->when($request->input('provider_id'), function ($query, $provider_id) {
                if ($provider_id !== 'all') {
                    $query->where('claim_requests.organization_id', $provider_id);
                }
            })
            ->select(
                'claim_requests.id',
                'claim_requests.code as request_code',
                'claim_requests.status',
                'claim_requests.created_at as request_date',
                'claim_requests.service_code',
                'claims.code as claim_code',
                'request_logs.code as log_code',
                DB::raw('COALESCE(log_amounts.total_incurred, claims.amount_incurred, 0) as amount_incurred'),
                DB::raw('COALESCE(log_amounts.total_approved, claims.amount_approved, 0) as amount_approved'),
                DB::raw('COALESCE(claims.amount_not_approved, 0) as amount_not_approved'),
                DB::raw('COALESCE(log_amounts.total_excess, claims.excess_paid, 0) as excess_paid'),
                'claims.benefit_code',
                'claims.benefit_desc',
                'members.name as member_name',
                'members.member_id as member_number',
                'members.birth_date',
                'members.gender',
                'corporate_employees.nik',
                'corporate_employees.branch_code',
                'organizations.name as provider_name',
                'plans.code as plan_code',
                'benefits.code as benefit_code_ref'
            )
            ->orderBy('claim_requests.created_at', 'desc')
            ->get();

        $fileName = 'PrimayanMedicare-List-' . now()->format('Y-m-d_H-i-s') . '.xlsx';
        $filePath = storage_path('app/public/temp/' . $fileName);

        if (!is_dir(storage_path('app/public/temp'))) {
            mkdir(storage_path('app/public/temp'), 0755, true);
        }

        $writer = WriterEntityFactory::createXLSXWriter();
        $writer->openToFile($filePath);

        $serviceCodeMap = [
            'OP' => 'Outpatient',
            'IP' => 'Inpatient',
            'DE' => 'Dental',
            'MA' => 'Maternal',
            'GL' => 'Optical',
            'MCU' => 'Medical Check Up',
            'MEDIVAC' => 'Medical Emergency Evacuation',
        ];

        $headers = [
            'No',
            'Code Claim / Code LOG',
            'Member Name',
            'Member Number',
            'NIK',
            'Birth Date',
            'Gender',
            'Plan',
            'Benefit',
            'Service',
            'Provider',
            'Request Date',
            'Amount Incurred',
            'Amount Approved',
            'Amount Not Approved',
            'Excess Paid',
            'Status',
        ];
        $headerRow = WriterEntityFactory::createRowFromArray($headers);
        $writer->addRow($headerRow);

        $no = 1;
        foreach ($results as $row) {
            $serviceCode = $row->service_code ?? '-';
            $serviceName = $serviceCodeMap[$serviceCode] ?? $serviceCode;

            $rowData = [
                $no++,
                ($row->claim_code && $row->log_code)
                    ? $row->claim_code . ' / ' . $row->log_code
                    : ($row->claim_code ?? $row->log_code ?? $row->request_code ?? '-'),
                $row->member_name ?? '-',
                $row->member_number ?? '-',
                $row->nik ?? '-',
                $row->birth_date ?? '-',
                $row->gender ?? '-',
                $row->plan_code ?? '-',
                $row->benefit_name ?? $row->benefit_desc ?? '-',
                $serviceName,
                $row->provider_name ?? '-',
                $row->request_date ?? '-',
                $row->amount_incurred ?? 0,
                $row->amount_approved ?? 0,
                $row->amount_not_approved ?? 0,
                $row->excess_paid ?? 0,
                $row->status ?? '-',
            ];
            $dataRow = WriterEntityFactory::createRowFromArray($rowData);
            $writer->addRow($dataRow);
        }

        $writer->close();

        return Helper::responseJson([
            'file_name' => 'Primayan Medicare List ' . now()->format('Y-m-d H:i:s'),
            'file_url' => Storage::disk('public')->url('temp/' . $fileName),
        ]);
    }

    private function exportSummary($corporate)
    {
        // Get all branch codes
        $branches = DB::table('corporate_employees')
            ->where('corporate_id', $corporate->id)
            ->whereNull('deleted_at')
            ->select('branch_code')
            ->groupBy('branch_code')
            ->get();

        $fileName = 'PrimayanMedicare-Summary-' . now()->format('Y-m-d_H-i-s') . '.xlsx';
        $filePath = storage_path('app/public/temp/' . $fileName);

        if (!is_dir(storage_path('app/public/temp'))) {
            mkdir(storage_path('app/public/temp'), 0755, true);
        }

        $codeRSMap = [
            'AI' => 'ABI', 'BB' => 'PHBB', 'BT' => 'PHBT', 'BU' => 'PHBU',
            'BW' => 'PHBW', 'CI' => 'PHPC', 'CO' => 'FABS', 'DE' => 'PHDE',
            'EV' => 'PHEV', 'HE' => 'PHHE', 'KG' => 'PHKG', 'KI' => 'KMI',
            'KR' => 'PHKA', 'KV' => 'KAVA', 'LM' => 'LMS', 'LY' => 'LYNAS',
            'MK' => 'PHMA', 'MS' => 'EYEQU', 'PF' => 'FMC', 'PS' => 'PHPK',
            'PY' => 'PHBP', 'RA' => 'PHRA', 'SB' => 'PHSB', 'SF' => 'SFI',
            'SG' => 'PHSM', 'SM' => 'SIM', 'SO' => 'PHSW', 'SS' => 'SAS',
            'TG' => 'PHTA', 'UP' => 'UKRIDA', 'WS' => 'WEST'
        ];

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

        // Header Date Range (Row 1)
        $dateRange = now()->startOfMonth()->format('j F') . ' - ' . now()->format('j F Y');
        $sheet->setCellValue('A1', strtoupper($dateRange));
        $sheet->mergeCells('A1:G1');
        $sheet->getStyle('A1')->getAlignment()->setHorizontal(Alignment::HORIZONTAL_CENTER);

        // Table Headers (Row 3)
        $headers = ['Code RS', 'Branch Code', 'Total Benefit', 'Deposit 10%', 'Pemakaian Benefit Obat & Rujukan', 'Pemakaian Telekonsultasi', 'Sisa Deposit'];
        $sheet->fromArray($headers, null, 'A3');
        $sheet->getStyle('A3:G3')->applyFromArray([
            'font' => [
                'bold' => true,
            ],
            'fill' => [
                'fillType' => Fill::FILL_SOLID,
                'startColor' => [
                    'rgb' => 'C6E0B4'
                ]
            ],
            'borders' => [
                'allBorders' => [
                    'borderStyle' => Border::BORDER_THIN,
                ]
            ]
        ]);

        $row = 4;
        foreach ($branches as $branch) {
            $branchCode = $branch->branch_code ?? '-';
            $codeRS = $codeRSMap[$branchCode] ?? '-';

            $totalDeposit = DB::table('corporate_employees')
                ->join('member_plans', 'corporate_employees.member_id', '=', 'member_plans.member_id')
                ->join('plans', 'member_plans.plan_id', '=', 'plans.id')
                ->where('corporate_employees.corporate_id', $corporate->id)
                ->where(function($query) use ($branchCode) {
                    if ($branchCode === '-') {
                        $query->whereNull('corporate_employees.branch_code')->orWhere('corporate_employees.branch_code', '');
                    } else {
                        $query->where('corporate_employees.branch_code', $branchCode);
                    }
                })
                ->whereNull('corporate_employees.deleted_at')
                ->whereNull('member_plans.deleted_at')
                ->sum(DB::raw('CAST(plans.limit_rules as UNSIGNED)'));

            $deposit10 = $totalDeposit * 0.1;

            $usageMedicines = DB::table('request_log_medicines')
                ->join('request_logs', 'request_log_medicines.request_log_id', '=', 'request_logs.id')
                ->join('corporate_employees', 'request_logs.member_id', '=', 'corporate_employees.member_id')
                ->where('corporate_employees.corporate_id', $corporate->id)
                ->where(function($query) use ($branchCode) {
                    if ($branchCode === '-') {
                        $query->whereNull('corporate_employees.branch_code')->orWhere('corporate_employees.branch_code', '');
                    } else {
                        $query->where('corporate_employees.branch_code', $branchCode);
                    }
                })
                ->whereIn('request_logs.log_type', ['prescription', 'reference'])
                ->sum('request_log_medicines.price');

            $consultationCount = DB::table('request_logs')
                ->join('corporate_employees', 'request_logs.member_id', '=', 'corporate_employees.member_id')
                ->where('corporate_employees.corporate_id', $corporate->id)
                ->where(function($query) use ($branchCode) {
                    if ($branchCode === '-') {
                        $query->whereNull('corporate_employees.branch_code')
                            ->orWhere('corporate_employees.branch_code', '');
                    } else {
                        $query->where('corporate_employees.branch_code', $branchCode);
                    }
                })
                ->where('request_logs.log_type', 'consultation')
                ->count();

            $usageConsultation = $consultationCount * 11100;
            $remainingDeposit = $deposit10 - $usageMedicines - $usageConsultation;

            $sheet->setCellValue('A' . $row, $codeRS);
            $sheet->setCellValue('B' . $row, $branchCode);
            $sheet->setCellValue('C' . $row, $totalDeposit);
            $sheet->setCellValue('D' . $row, $deposit10);
            $sheet->setCellValue('E' . $row, $usageMedicines);
            $sheet->setCellValue('F' . $row, $usageConsultation);
            $sheet->setCellValue('G' . $row, $remainingDeposit);

            // Number format with thousand separator
            $sheet->getStyle('C' . $row . ':G' . $row)->getNumberFormat()->setFormatCode('#,##0');

            $row++;
        }

        $lastRow = $row - 1;
        foreach (range('A', 'G') as $col) {
            $sheet->getColumnDimension($col)->setAutoSize(true);
        }

        $sheet->getStyle('A3:G' . $lastRow)->applyFromArray([
            'borders' => [
                'allBorders' => [
                    'borderStyle' => Border::BORDER_THIN,
                    'color' => ['rgb' => '000000']
                ]
            ]
        ]);

        $sheet->freezePane('A4');

        $sheet->setCellValue('E1', '=SUM(E4:E' . $lastRow . ')');
        $sheet->setCellValue('F1', '=SUM(F4:F' . $lastRow . ')');
        $sheet->getStyle('E1:F1')
            ->getNumberFormat()
            ->setFormatCode('#,##0');
        $sheet->getStyle('E1:F1')->applyFromArray([
            'font' => [
                'bold' => true,
                'size' => 12,
            ],
            'alignment' => [
                'horizontal' => Alignment::HORIZONTAL_CENTER,
            ]
        ]);

        $writer = new Xlsx($spreadsheet);
        $writer->save($filePath);

        return Helper::responseJson([
            'file_name' => $fileName,
            'file_url' => Storage::disk('public')->url('temp/' . $fileName),
        ]);
    }
}