<?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\Log;
    use Illuminate\Support\Facades\Storage;
    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 $fileName;

        /**
         * 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 $disk = 'local')
        {
            $this->account_number = $account_number;
            $this->period         = $period;
            $this->saldo          = $saldo;
            $this->disk           = $disk;
            $this->fileName       = "{$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}");

                $stmt       = $this->getStatementData();
                $mappedData = $this->mapStatementData($stmt);
                $this->exportToCsv($mappedData);

                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;
            }
        }

        /**
         * Get statement data from database
         */
        private function getStatementData()
        {
            return StmtEntry::with(['ft', 'transaction'])
                            ->where('account_number', $this->account_number)
                            ->where('booking_date', $this->period)
                            ->orderBy('date_time', 'ASC')
                            ->orderBy('trans_reference', 'ASC')
                            ->get();
        }

        /**
         * Map statement data to the required format
         */
        private function mapStatementData($stmt)
        {
            $runningBalance = (float) $this->saldo;

            // Map the data to transform or format specific fields
            $mappedData = $stmt->sortBy(['ACTUAL.DATE', 'REFERENCE.NUMBER'])
                               ->map(function ($item, $index) use (&$runningBalance) {
                                   $runningBalance += (float) $item->amount_lcy;
                                   return [
                                       'NO'                 => 0,  // Will be updated later
                                       'TRANSACTION.DATE'   => Carbon::createFromFormat('YmdHi', $item->booking_date . substr($item->ft?->date_time ?? '0000000000', 6, 4))
                                                                     ->format('d/m/Y H:i'),
                                       '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'        => Carbon::createFromFormat('ymdHi', $item->ft?->date_time ?? '2505120000')
                                                                     ->format('d/m/Y H:i'),
                                   ];
                               })
                               ->values();

            // Apply sequential numbers
            return $mappedData->map(function ($item, $index) {
                $item['NO'] = $index + 1;
                return $item;
            });
        }

        /**
         * Generate narrative for a statement entry
         */
        private function generateNarrative($item)
        {
            $narr = '';
            if ($item->transaction->narr_type) {
                $narr .= $item->transaction->stmt_narr . ' ';
                $narr .= $this->getFormatNarrative($item->transaction->narr_type, $item);
            } else {
                $narr .= $item->transaction->stmt_narr . ' ';
            }

            if ($item->ft?->recipt_no) {
                $narr .= 'Receipt No: ' . $item->ft->recipt_no;
            }
            return $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.IN';
            } 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') {
                            $result .= $this->getTransaction($item->trans_reference, $fieldName) . ' ';
                        }
                    }
                }
            }

            return $result;
        }

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

        /**
         * Export data to CSV file
         */
        private function exportToCsv($mappedData)
        {
            $csvContent = '';

            // Add headers
            $csvContent .= implode('|', array_keys($mappedData[0])) . "\n";

            // Add data rows
            foreach ($mappedData as $row) {
                $csvContent .= implode('|', $row) . "\n";
            }

            // Save to storage
            Storage::disk($this->disk)->put("statements/{$this->fileName}", $csvContent);

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