<?php

    namespace Modules\Webstatement\Http\Controllers;

    use App\Http\Controllers\Controller;
    use Illuminate\Http\Request;
    use Modules\Webstatement\Models\Atmcard;
    use RuntimeException;

    class BiayaKartuController extends Controller
    {
        private const DEFAULT_FEES = [
            'CLASSIC' => 3000,
            'CLAS'    => 3000,
            'SILVER'  => 5000,
            'SILV'    => 5000,
            'GOLD'    => 10000
        ];
        private const CSV_FILENAME = 'atmcards.csv';

        /**
         * Display a listing of the resource.
         */
        public function index()
        {
            $filename = $this->generateAtmCardCsv();
            return response()->download($filename)->deleteFileAfterSend(true);
        }

        /**
         * Generate CSV file with ATM card data
         *
         * @return string Filename of generated CSV
         */
        private function generateAtmCardCsv()
        : string
        {
            $cards    = $this->getEligibleAtmCards();
            $filename = self::CSV_FILENAME;

            $handle = fopen($filename, 'w+');
            if (!$handle) {
                throw new RuntimeException("Tidak dapat membuat file CSV: $filename");
            }

            try {
                foreach ($cards as $card) {
                    $fee    = $this->determineCardFee($card);
                    $csvRow = $this->createCsvRow($card, $fee);
                    fputcsv($handle, $csvRow, '|');
                }
            } finally {
                fclose($handle);
            }

            $this->cleanupCsvFile($filename);

            return $filename;
        }

        /**
         * Get eligible ATM cards from database
         *
         * @return \Illuminate\Database\Eloquent\Collection
         */
        private function getEligibleAtmCards()
        {
            return Atmcard::where('crsts', 1)
                          ->whereNotNull('accflag')
                          ->whereNotNull('branch')
                          ->whereNotNull('currency')
                          ->whereIn('ctdesc', array_keys(self::DEFAULT_FEES))
                          ->get();
        }

        /**
         * Determine fee for a card based on its type
         *
         * @param Atmcard $card
         *
         * @return int
         */
        private function determineCardFee(Atmcard $card)
        : int
        {
            if ($card->fee) {
                return $card->fee;
            }

            return self::DEFAULT_FEES[$card->ctdesc] ?? 0;
        }

        /**
         * Create CSV row data for a card
         *
         * @param Atmcard $card
         * @param int     $fee
         *
         * @return array
         */
        private function createCsvRow(Atmcard $card, int $fee)
        : array
        {
            $today = date('Ymd');

            return [
                '',
                $card->accflag,
                $card->currency ?? 'IDR',
                $fee,
                'PL65129',
                '',
                '',
                $card->branch,
                $today,
                $today,
                '',
                '',
                'ADMIN FEE ATM::' . $card->crdno . '::' . $today,
                '',
                '',
                '',
                '',
                '',
                '',
                'AC'
            ];
        }

        /**
         * Remove double quotes from CSV file
         *
         * @param string $filename
         *
         * @return void
         */
        private function cleanupCsvFile(string $filename)
        : void
        {
            $fileContent = file_get_contents($filename);
            if ($fileContent === false) {
                throw new RuntimeException("Tidak dapat membaca file CSV: $filename");
            }

            $fileContent = str_replace('"', '', $fileContent);

            if (file_put_contents($filename, $fileContent) === false) {
                throw new RuntimeException("Tidak dapat menulis ke file CSV: $filename");
            }
        }

        /**
         * Show the form for creating a new resource.
         */
        public function create()
        {
            return view('webstatement::create');
        }

        /**
         * Store a newly created resource in storage.
         */
        public function store(Request $request)
        {
            //
        }

        /**
         * Show the specified resource.
         */
        public function show($id)
        {
            return view('webstatement::show');
        }

        /**
         * Show the form for editing the specified resource.
         */
        public function edit($id)
        {
            return view('webstatement::edit');
        }

        /**
         * Update the specified resource in storage.
         */
        public function update(Request $request, $id)
        {
            //
        }

        /**
         * Remove the specified resource from storage.
         */
        public function destroy($id)
        {
            //
        }
    }