<?php

    namespace Modules\Webstatement\Jobs;

    use Carbon\Carbon;
    use Exception;
    use Illuminate\Bus\Queueable;
    use Illuminate\Contracts\Queue\ShouldQueue;
    use Illuminate\Foundation\Bus\Dispatchable;
    use Illuminate\Queue\InteractsWithQueue;
    use Illuminate\Queue\SerializesModels;
    use Illuminate\Support\Facades\DB;
    use Illuminate\Support\Facades\Log;
    use Illuminate\Support\Facades\Storage;
    use Modules\Webstatement\Models\ProcessedStatement;
    use Modules\Webstatement\Models\StmtEntry;
    use Modules\Webstatement\Models\TempFundsTransfer;
    use Modules\Webstatement\Models\TempStmtNarrFormat;
    use Modules\Webstatement\Models\TempStmtNarrParam;

    class ExportStatementJob implements ShouldQueue
    {
        use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;

        protected $account_number;
        protected $period;
        protected $saldo;
        protected $disk;
        protected $client;
        protected $fileName;
        protected $chunkSize = 1000; // Proses data dalam chunk untuk mengurangi penggunaan memori

        /**
         * Create a new job instance.
         *
         * @param string $account_number
         * @param string $period
         * @param string $saldo
         * @param string $disk
         */
        public function __construct(string $account_number, string $period, string $saldo, string $client = '', string $disk = 'local')
        {
            $this->account_number = $account_number;
            $this->period         = $period;
            $this->saldo          = $saldo;
            $this->disk           = $disk;
            $this->client         = $client;
            $this->fileName       = "{$account_number}_{$period}.csv";
        }

        /**
         * Execute the job.
         */
        public function handle()
        : void
        {
            try {
                Log::info("Starting export statement job for account: {$this->account_number}, period: {$this->period}");

                $this->processStatementData();

                // Export data yang sudah diproses ke CSV
                $this->exportToCsv();

                Log::info("Export statement job completed successfully for account: {$this->account_number}, period: {$this->period}");
            } catch (Exception $e) {
                Log::error("Error in ExportStatementJob: " . $e->getMessage());
                throw $e;
            }
        }

        private function processStatementData()
        : void
        {
            $accountQuery = [
                'account_number' => $this->account_number,
                'period'         => $this->period
            ];

            $totalCount        = $this->getTotalEntryCount($accountQuery);
            $existingDataCount = $this->getExistingProcessedCount($accountQuery);

            // Hanya proses jika data belum lengkap diproses
            if ($existingDataCount !== $totalCount) {
                $this->deleteExistingProcessedData($accountQuery);
                $this->processAndSaveStatementEntries($totalCount);
            }
        }

        private function getTotalEntryCount(array $criteria)
        : int
        {
            return StmtEntry::where('account_number', $criteria['account_number'])
                            ->where('booking_date', $criteria['period'])
                            ->count();
        }

        private function getExistingProcessedCount(array $criteria)
        : int
        {
            return ProcessedStatement::where('account_number', $criteria['account_number'])
                                     ->where('period', $criteria['period'])
                                     ->count();
        }

        private function deleteExistingProcessedData(array $criteria)
        : void
        {
            ProcessedStatement::where('account_number', $criteria['account_number'])
                              ->where('period', $criteria['period'])
                              ->delete();
        }

        private function processAndSaveStatementEntries(int $totalCount)
        : void
        {
            $runningBalance = (float) $this->saldo;
            $globalSequence = 0;

            Log::info("Processing {$totalCount} statement entries for account: {$this->account_number}");

            StmtEntry::with(['ft', 'transaction'])
                     ->where('account_number', $this->account_number)
                     ->where('booking_date', $this->period)
                     ->orderBy('date_time', 'ASC')
                     ->orderBy('trans_reference', 'ASC')
                     ->chunk($this->chunkSize, function ($entries) use (&$runningBalance, &$globalSequence) {
                         $processedData = $this->prepareProcessedData($entries, $runningBalance, $globalSequence);

                         if (!empty($processedData)) {
                             DB::table('processed_statements')->insert($processedData);
                         }
                     });
        }

        private function prepareProcessedData($entries, &$runningBalance, &$globalSequence)
        : array
        {
            $processedData = [];

            foreach ($entries as $item) {
                $globalSequence++;
                $runningBalance += (float) $item->amount_lcy;

                $transactionDate = $this->formatTransactionDate($item);
                $actualDate      = $this->formatActualDate($item);

                $processedData[] = [
                    'account_number'     => $this->account_number,
                    'period'             => $this->period,
                    'sequence_no'        => $globalSequence,
                    'transaction_date'   => $transactionDate,
                    'reference_number'   => $item->trans_reference,
                    'transaction_amount' => $item->amount_lcy,
                    'transaction_type'   => $item->amount_lcy < 0 ? 'D' : 'C',
                    'description'        => $this->generateNarrative($item),
                    'end_balance'        => $runningBalance,
                    'actual_date'        => $actualDate,
                    'created_at'         => now(),
                    'updated_at'         => now(),
                ];
            }

            return $processedData;
        }

        private function formatTransactionDate($item)
        : string
        {
            try {
                return Carbon::createFromFormat(
                    'YmdHi',
                    $item->booking_date . substr($item->ft?->date_time ?? '0000000000', 6, 4)
                )->format('d/m/Y H:i');
            } catch (Exception $e) {
                Log::warning("Error formatting transaction date: " . $e->getMessage());
                return Carbon::now()->format('d/m/Y H:i');
            }
        }

        private function formatActualDate($item)
        : string
        {
            try {
                return Carbon::createFromFormat(
                    'ymdHi',
                    $item->ft?->date_time ?? '2505120000'
                )->format('d/m/Y H:i');
            } catch (Exception $e) {
                Log::warning("Error formatting actual date: " . $e->getMessage());
                return Carbon::now()->format('d/m/Y H:i');
            }
        }

        /**
         * Generate narrative for a statement entry
         */
        private function generateNarrative($item)
        {
            $narr = [];

            if ($item->transaction) {
                if ($item->transaction->stmt_narr) {
                    $narr[] = $item->transaction->stmt_narr;
                }
                if ($item->narrative) {
                    $narr[] = $item->narrative;
                }
                if ($item->transaction->narr_type) {
                    $narr[] = $this->getFormatNarrative($item->transaction->narr_type, $item);
                }
            } else if ($item->narrative) {
                $narr[] = $item->narrative;
            }

            if ($item->ft?->recipt_no) {
                $narr[] = 'Receipt No: ' . $item->ft->recipt_no;
            }

            return implode(' ', array_filter($narr));
        }

        /**
         * Get formatted narrative based on narrative type
         */
        private function getFormatNarrative($narr, $item)
        {
            $narrParam = TempStmtNarrParam::where('_id', $narr)->first();

            if (!$narrParam) {
                return '';
            }

            $fmt = '';
            if ($narrParam->_id == 'FTIN') {
                $fmt = 'FT.IN';
            } else if ($narrParam->_id == 'FTOUT') {
                $fmt = 'FT.OUT';
            } else if ($narrParam->_id == 'TTTRFOUT') {
                $fmt = 'TT.O.TRF';
            } else if ($narrParam->_id == 'TTTRFIN') {
                $fmt = 'TT.I.TRF';
            } else if ($narrParam->_id == 'APITRX'){
                $fmt = 'API.TSEL';
            } else if ($narrParam->_id == 'ONUSCR'){
                $fmt = 'ONUS.CR';
            } else if ($narrParam->_id == 'ONUSDR'){
                $fmt = 'ONUS.DR';
            }else {
                $fmt = $narrParam->_id;
            }

            $narrFormat = TempStmtNarrFormat::where('_id', $fmt)->first();

            if (!$narrFormat) {
                return '';
            }

            // Get the format string from the database
            $formatString = $narrFormat->text_data ?? '';

            // Parse the format string
            // Split by the separator ']'
            $parts = explode(']', $formatString);

            $result = '';

            foreach ($parts as $index => $part) {
                if (empty($part)) {
                    continue;
                }

                if ($index === 0) {
                    // For the first part, take only what's before the '!'
                    $splitPart = explode('!', $part);
                    if (count($splitPart) > 0) {
                        // Remove quotes, backslashes, and other escape characters
                        $cleanPart = trim($splitPart[0]).' ';
                        // Remove quotes at the beginning and end
                        $cleanPart = preg_replace('/^["\'\\\\]+|["\'\\\\]+$/', '', $cleanPart);
                        // Remove any remaining backslashes
                        $cleanPart = str_replace('\\', '', $cleanPart);
                        // Remove any remaining quotes
                        $cleanPart = str_replace('"', '', $cleanPart);
                        $result    .= $cleanPart;
                    }
                } else {
                    // For other parts, these are field placeholders
                    $fieldName = strtolower(str_replace('.', '_', $part));

                    // Get the corresponding parameter value from narrParam
                    $paramValue = null;

                    // Check if the field exists as a property in narrParam
                    if (property_exists($narrParam, $fieldName)) {
                        $paramValue = $narrParam->$fieldName;
                    } else if (isset($narrParam->$fieldName)) {
                        $paramValue = $narrParam->$fieldName;
                    }

                    // If we found a value, add it to the result
                    if ($paramValue !== null) {
                        $result .= $paramValue;
                    } else {
                        // If no value found, try to use the original field name as a fallback
                        if ($fieldName !== 'recipt_no') {
                            $prefix = substr($item->trans_reference ?? '', 0, 2);
                            $relationMap = [
                                'FT' => 'ft',
                                'TT' => 'tt',
                                'DC' => 'dc',
                                'AA' => 'aa'
                            ];

                            if (isset($relationMap[$prefix])) {
                                $relation = $relationMap[$prefix];
                                $result .= ($item->$relation?->$fieldName ?? '') . ' ';
                            }
                        }
                    }
                }
            }

            return str_replace('<NL>', ' ', $result);
        }

        /**
         * Export processed data to CSV file
         */
        private function exportToCsv()
        : void
        {
            // Determine the base path based on client
            $basePath = !empty($this->client)
                ? "statements/{$this->client}"
                : "statements";

            // Create client directory if it doesn't exist
            if (!empty($this->client)) {
                Storage::disk($this->disk)->makeDirectory($basePath);
            }

            // Create account directory
            $accountPath = "{$basePath}/{$this->account_number}";
            Storage::disk($this->disk)->makeDirectory($accountPath);

            $filePath = "{$accountPath}/{$this->fileName}";

            // Delete existing file if it exists
            if (Storage::disk($this->disk)->exists($filePath)) {
                Storage::disk($this->disk)->delete($filePath);
            }

            $csvContent = "NO|TRANSACTION.DATE|REFERENCE.NUMBER|TRANSACTION.AMOUNT|TRANSACTION.TYPE|DESCRIPTION|END.BALANCE|ACTUAL.DATE\n";

            // Ambil data yang sudah diproses dalam chunk untuk mengurangi penggunaan memori
            ProcessedStatement::where('account_number', $this->account_number)
                              ->where('period', $this->period)
                              ->orderBy('sequence_no')
                              ->chunk($this->chunkSize, function ($statements) use (&$csvContent, $filePath) {
                                  foreach ($statements as $statement) {
                                      $csvContent .= implode('|', [
                                              $statement->sequence_no,
                                              $statement->transaction_date,
                                              $statement->reference_number,
                                              $statement->transaction_amount,
                                              $statement->transaction_type,
                                              $statement->description,
                                              $statement->end_balance,
                                              $statement->actual_date
                                          ]) . "\n";
                                  }

                                  // Tulis ke file secara bertahap untuk mengurangi penggunaan memori
                                  Storage::disk($this->disk)->append($filePath, $csvContent);
                                  $csvContent = ''; // Reset content setelah ditulis
                              });

            Log::info("Statement exported to {$this->disk} disk: {$filePath}");
        }

        /**
         * Get transaction data by reference and field
         */
        private function getTransaction($ref, $field)
        {
            $trans = TempFundsTransfer::where('ref_no', $ref)->first();
            return $trans->$field ?? "";
        }
    }