<?php

namespace App\Services\RegisterCreator\DocumentProcessors;

use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
use Illuminate\Support\Facades\Log;

class WdbDocumentProcessor extends AbstractDocumentProcessor
{
    /**
     * Process WDB (Welding Database) type documents
     */
    public function process(
        array $weldLogData,
        array $document,
        Worksheet $sheet,
        int &$currentRow,
        array $settings
    ): int {
        $this->initialize($weldLogData, $document, $sheet, $currentRow, $settings);
        
        $this->log("Processing WDB document: {$document['path']}");
        
        $path = $document['path'];
        $wpsData = $settings['wps_data'] ?? null;
        $startRowNo = $settings['row_no'] ?? 1;
        
        // Process based on sub-type
        if (strpos($path, "Naks Technology") !== false) {
            return $this->processNaksTechnology($currentRow, $wpsData, $startRowNo);
        }
        
        if (strpos($path, "Naks_Welder") !== false) {
            return $this->processNaksWelder($currentRow, $startRowNo);
        }
        
        if (strpos($path, "Naks_Equipments") !== false) {
            return $this->processNaksEquipments($currentRow, $startRowNo);
        }
        
        if (strpos($path, "Naks_Consumables") !== false) {
            return $this->processNaksConsumables($currentRow, $startRowNo);
        }
        
        if (strpos($path, "Welding Experts") !== false) {
            return $this->processWeldingExperts($currentRow, $startRowNo);
        }
        
        if (strpos($path, "WPQ") !== false) {
            return $this->processWpq($currentRow, $startRowNo);
        }
        
        if (strpos($path, "WPS") !== false) {
            return $this->processWps($currentRow, $wpsData, $startRowNo);
        }
        
        if (strpos($path, "PQR") !== false) {
            return $this->processPqr($currentRow, $wpsData, $startRowNo);
        }
        
        return $currentRow;
    }
    
    /**
     * Process Naks Technology certificates
     */
    private function processNaksTechnology(int &$currentRow, $wpsData, int $startRowNo = 1): int
    {
        if (!$wpsData) {
            $this->log("WPS data not found, skipping Naks Technology", 'warning');
            return $currentRow;
        }
        
        $naksCertificates = explode(" + ", $wpsData->naks_certificate_no);
        $this->log("Processing " . count($naksCertificates) . " Naks Technology certificates");
        
        foreach ($naksCertificates as $naksCertificate) {
            try {
                $normalized = $this->normalizeSearchTerm($naksCertificate);
                $search = $this->searchFiles("storage/documents/{$this->document['path']}/*{$normalized}*.pdf");
                
                $this->document['title3'] = $naksCertificate;
                
                $newRow = $this->addRowToExcel(
                    $search,
                    $naksCertificate,
                    $wpsData->date ?? ''
                );
                
                if ($newRow > $currentRow) {
                    $currentRow = $newRow;
                }
            } catch (\Throwable $th) {
                $this->log("Error processing Naks certificate: {$naksCertificate} - {$th->getMessage()}", 'error');
                continue;
            }
        }
        
        return $currentRow;
    }
    
    /**
     * Process Naks Welder certificates
     */
    private function processNaksWelder(int &$currentRow, int $startRowNo = 1): int
    {
        $this->log("Processing Naks Welders");
        
        $weldersData = apply_welded_filter(
            db("weld_logs")
            ->select("certificate_no_1", "certificate_no_2")
            ->where($this->registerColumnBased, $this->weldLogData[$this->registerColumnBased])
        )->get();
        
        $naksWelders = [];
        
        foreach ($weldersData as $welderData) {
            if (!empty($welderData->certificate_no_1) && !in_array($welderData->certificate_no_1, $naksWelders)) {
                $naksWelders[] = $welderData->certificate_no_1;
            }
            if (!empty($welderData->certificate_no_2) && !in_array($welderData->certificate_no_2, $naksWelders)) {
                $naksWelders[] = $welderData->certificate_no_2;
            }
        }
        
        $this->log("Found " . count($naksWelders) . " welder certificates");
        
        // Prepare welders with their dates for sorting
        $weldersWithDates = [];
        foreach ($naksWelders as $naksWelder) {
            $welderInfo = db("naks_welders")->where("naks_certificate_no", $naksWelder)->first();
            $weldersWithDates[] = [
                'certificate_no' => $naksWelder,
                'date' => $welderInfo->period_of_validity ?? ''
            ];
        }
        
        // Sort by date (oldest first) - reverse insertion order
        usort($weldersWithDates, function($a, $b) {
            $dateA = !empty($a['date']) ? strtotime($a['date']) : 0;
            $dateB = !empty($b['date']) ? strtotime($b['date']) : 0;
            return $dateA <=> $dateB;
        });
        
        $this->log("Welders sorted by date (oldest first for reverse insertion)");
        
        foreach ($weldersWithDates as $welderData) {
            try {
                $naksWelder = $welderData['certificate_no'];
                $normalized = $this->normalizeSearchTerm($naksWelder);
                $search = $this->searchFiles("storage/documents/{$this->document['path']}/*{$normalized}*.pdf");
                
                $this->document['title2'] = $naksWelder;
                
                $newRow = $this->addRowToExcel(
                    $search,
                    $naksWelder,
                    $welderData['date']
                );
                
                if ($newRow > $currentRow) {
                    $currentRow = $newRow;
                }
            } catch (\Throwable $th) {
                $this->log("Error processing welder: {$naksWelder} - {$th->getMessage()}", 'error');
                continue;
            }
        }
        
        return $currentRow;
    }
    
    /**
     * Process Naks Equipment certificates
     */
    private function processNaksEquipments(int &$currentRow, int $startRowNo = 1): int
    {
        $this->log("Processing Naks Equipments");
        
        $certificates = [];
        if (!empty($this->document['title2'])) {
            $certificates = array_map('trim', explode(",", $this->document['title2']));
        }
        
        // Prepare equipments with dates for sorting
        $equipmentsWithDates = [];
        foreach ($certificates as $certificate) {
            $equipmentInfo = db("welding_equipment")->where("attestation", $certificate)->first();
            $equipmentsWithDates[] = [
                'certificate' => $certificate,
                'date' => $equipmentInfo->valid_until ?? ''
            ];
        }
        
        // Sort by valid_until date (oldest first) - reverse insertion order
        usort($equipmentsWithDates, function($a, $b) {
            $timestampA = !empty($a['date']) ? strtotime($a['date']) : 0;
            $timestampB = !empty($b['date']) ? strtotime($b['date']) : 0;
            return $timestampA <=> $timestampB;
        });
        
        $this->log("Equipments sorted by date (oldest first for reverse insertion)");
        
        foreach ($equipmentsWithDates as $equipData) {
            try {
                $certificate = $equipData['certificate'];
                $normalized = $this->normalizeSearchTerm($certificate);
                $search = $this->searchFiles("storage/documents/{$this->document['path']}/*{$normalized}*.pdf");
                
                $this->document['title2'] = $certificate;
                $this->document['title3'] = $certificate;
                
                $newRow = $this->addRowToExcel(
                    $search,
                    $certificate,
                    $equipData['date']
                );
                
                if ($newRow > $currentRow) {
                    $currentRow = $newRow;
                }
            } catch (\Throwable $th) {
                $this->log("Error processing equipment: {$certificate} - {$th->getMessage()}", 'error');
                continue;
            }
        }
        
        return $currentRow;
    }
    
    /**
     * Process Naks Consumables
     */
    private function processNaksConsumables(int &$currentRow, int $startRowNo = 1): int
    {
        $this->log("Processing Naks Consumables");
        
        $consumables = [];
        if (!empty($this->document['title2'])) {
            $consumables = array_map('trim', explode(",", $this->document['title2']));
        }
        
        // Prepare consumables with dates for sorting
        $consumablesWithDates = [];
        foreach ($consumables as $consumable) {
            $consumableInfo = db("naks_consumables")->where("naks_certificate_no", $consumable)->first();
            $consumablesWithDates[] = [
                'consumable' => $consumable,
                'date' => $consumableInfo->certificate_date ?? ''
            ];
        }
        
        // Sort by certificate_date (oldest first) - reverse insertion order
        usort($consumablesWithDates, function($a, $b) {
            $timestampA = !empty($a['date']) ? strtotime($a['date']) : 0;
            $timestampB = !empty($b['date']) ? strtotime($b['date']) : 0;
            return $timestampA <=> $timestampB;
        });
        
        $this->log("Consumables sorted by date (oldest first for reverse insertion)");
        
        foreach ($consumablesWithDates as $consData) {
            try {
                $consumable = $consData['consumable'];
                $normalized = $this->normalizeSearchTerm($consumable);
                $search = $this->searchFiles("storage/documents/{$this->document['path']}/*{$normalized}*.pdf");
                
                $this->document['title2'] = $consumable;
                
                $newRow = $this->addRowToExcel(
                    $search,
                    $consumable,
                    $consData['date']
                );
                
                if ($newRow > $currentRow) {
                    $currentRow = $newRow;
                }
            } catch (\Throwable $th) {
                $this->log("Error processing consumable: {$consumable} - {$th->getMessage()}", 'error');
                continue;
            }
        }
        
        return $currentRow;
    }
    
    /**
     * Process Welding Experts
     */
    private function processWeldingExperts(int &$currentRow, int $startRowNo = 1): int
    {
        $this->log("Processing Welding Experts");
        
        $certificates = array_map('trim', explode(',', $this->document['title2'] ?? ''));
        
        // Prepare experts with dates for sorting
        $expertsWithDates = [];
        foreach ($certificates as $certificate) {
            $expertInfo = db("register_of_experts")->where("certificate_no", $certificate)->first();
            $expertsWithDates[] = [
                'certificate' => $certificate,
                'date' => $expertInfo->expration_of_the_certificate ?? ''
            ];
        }
        
        // Sort by expiration date (oldest first) - reverse insertion order
        usort($expertsWithDates, function($a, $b) {
            $timestampA = !empty($a['date']) ? strtotime($a['date']) : 0;
            $timestampB = !empty($b['date']) ? strtotime($b['date']) : 0;
            return $timestampA <=> $timestampB;
        });
        
        $this->log("Experts sorted by date (oldest first for reverse insertion)");
        
        foreach ($expertsWithDates as $expertData) {
            try {
                $certificate = $expertData['certificate'];
                $normalized = $this->normalizeSearchTerm($certificate);
                $search = $this->searchFiles("storage/documents/{$this->document['path']}/*{$normalized}*.pdf");
                
                $this->document['title2'] = $certificate;
                
                $newRow = $this->addRowToExcel(
                    $search,
                    $certificate,
                    $expertData['date']
                );
                
                if ($newRow > $currentRow) {
                    $currentRow = $newRow;
                }
            } catch (\Throwable $th) {
                $this->log("Error processing expert: {$certificate} - {$th->getMessage()}", 'error');
                continue;
            }
        }
        
        return $currentRow;
    }
    
    /**
     * Process WPQ documents
     */
    private function processWpq(int &$currentRow, int $startRowNo = 1): int
    {
        $this->log("Processing WPQ");
        
        $wpqs = db("welder_tests")->whereIn("wpq_document_no", [
            $this->weldLogData['wpq_report_1'] ?? '',
            $this->weldLogData['wpq_report_2'] ?? '',
        ])->get()->toArray();
        
        $this->log("Found " . count($wpqs) . " WPQ documents");
        
        // Sort by naks_validity date (oldest first) - reverse insertion order
        usort($wpqs, function($a, $b) {
            $a = (object) $a;
            $b = (object) $b;
            $timestampA = !empty($a->naks_validity) ? strtotime($a->naks_validity) : 0;
            $timestampB = !empty($b->naks_validity) ? strtotime($b->naks_validity) : 0;
            return $timestampA <=> $timestampB;
        });
        
        $this->log("WPQ documents sorted by date (oldest first for reverse insertion)");
        
        foreach ($wpqs as $wpq) {
            $wpq = (object) $wpq;
            try {
                $normalized = $this->normalizeSearchTerm($wpq->wpq_document_no);
                $search = $this->searchFiles("storage/documents/{$this->document['path']}/*{$normalized}*.pdf");
                
                $this->document['title3'] = $wpq->wpq_document_no;
                
                $newRow = $this->addRowToExcel(
                    $search,
                    $wpq->wpq_document_no,
                    $wpq->naks_validity ?? ''
                );
                
                if ($newRow > $currentRow) {
                    $currentRow = $newRow;
                }
            } catch (\Throwable $th) {
                $this->log("Error processing WPQ: {$wpq->wpq_document_no} - {$th->getMessage()}", 'error');
                continue;
            }
        }
        
        return $currentRow;
    }
    
    /**
     * Process WPS documents
     */
    private function processWps(int &$currentRow, $wpsData, int $startRowNo = 1): int
    {
        if (!$wpsData) {
            $this->log("WPS data not found", 'warning');
            return $currentRow;
        }
        
        $this->log("Processing WPS: {$wpsData->details}");
        
        $normalized = $this->normalizeSearchTerm($wpsData->details);
        $search = $this->searchFiles("storage/documents/{$this->document['path']}/*{$normalized}*.pdf");
        
        $this->document['title3'] = $wpsData->details;
        
        $newRow = $this->addRowToExcel(
            $search,
            $wpsData->details,
            $wpsData->date ?? ''
        );
        
        if ($newRow > $currentRow) {
            $currentRow = $newRow;
        }
        
        return $currentRow;
    }
    
    /**
     * Process PQR documents
     */
    private function processPqr(int &$currentRow, $wpsData, int $startRowNo = 1): int
    {
        if (!$wpsData) {
            $this->log("WPS data not found, cannot process PQR", 'warning');
            return $currentRow;
        }
        
        $this->log("Processing PQR");
        
        $pqr = db("prosedure_qualification_records")->where("pqr_no", $wpsData->pqr_no)->first();
        
        if ($pqr) {
            $this->log("PQR found: {$pqr->pqr_no}");
            
            $normalized = $this->normalizeSearchTerm($pqr->pqr_no);
            $search = $this->searchFiles("storage/documents/{$this->document['path']}/*{$normalized}*.pdf");
            
            $this->document['title2'] = $pqr->pqr_no;
            
            $newRow = $this->addRowToExcel(
                $search,
                $pqr->pqr_no,
                $pqr->approved_date ?? ''
            );
            
            if ($newRow > $currentRow) {
                $currentRow = $newRow;
            }
        }
        
        return $currentRow;
    }
}