<?php

namespace App\Services\WeldLogTriggers\Triggers;

use App\Services\WeldLogTriggers\Base\BaseTrigger;
use App\Helpers\TransactionHelper;
use Illuminate\Support\Facades\Log;

/**
 * Handovers Sync Trigger
 * 
 * Syncs data from WeldLogs to Handovers table
 * Groups by line_number and creates/updates handover records
 */
class HandoversSyncTrigger extends BaseTrigger
{
    public function getName(): string
    {
        return 'Handovers Sync';
    }
    
    public function getOrder(): int
    {
        return 12;
    }
    
    public function getDependentFields(): array
    {
        return [
       
        ];
    }
    
    protected function process($data, $beforeData, array $context): array
    {
        try {
            // Get current weld log data
            $weldLog = db("weld_logs")->where("id", $data->id)->first();
            
            if (!$weldLog) {
                return ['success' => false, 'reason' => 'weld_log_not_found'];
            }
            
            // Skip processing if essential fields are missing
            if (empty($weldLog->line_number)) {
                return ['success' => false, 'reason' => 'line_number_empty'];
            }
            
            // Get all weld logs with the same line_number
            $allWeldLogs = db("weld_logs")
                ->where("line_number", $weldLog->line_number)
                ->orderBy('id', 'ASC') // Deadlock prevention
                ->get();
            
            // Process each weld log
            $handoversCreated = 0;
            $handoversUpdated = 0;
            
            // Group by line - handovers are stored by line
            $uniqueLines = [];
            foreach ($allWeldLogs as $currentWeldLog) {
                $lineKey = $currentWeldLog->line_number;
                if (!isset($uniqueLines[$lineKey])) {
                    $uniqueLines[$lineKey] = $currentWeldLog;
                }
            }
            
            // Process Handovers in chunks with TransactionHelper
            TransactionHelper::chunkTransaction(
                collect($uniqueLines),
                function ($handoverChunk) use (&$handoversCreated, &$handoversUpdated) {
                    foreach ($handoverChunk as $currentWeldLog) {
                        $this->processHandoverRecord($currentWeldLog, $handoversCreated, $handoversUpdated);
                    }
                    return $handoverChunk->count();
                },
                10, // Chunk size
                10000 // 10ms delay
            );
            
        } catch (\Throwable $th) {
            Log::error("Handovers sync error: " . $th->getMessage());
            
            // Log detailed error for debugging
            Log::error("Error details: ", [
                'weldLogId' => $data->id,
                'exception' => get_class($th),
                'file' => $th->getFile(),
                'line' => $th->getLine(),
                'trace' => $th->getTraceAsString()
            ]);
            
            throw $th;
        }

        return [
            'success' => true,
            'created' => $handoversCreated,
            'updated' => $handoversUpdated
        ];
    }
    
    /**
     * Process a single handover record
     */
    protected function processHandoverRecord($currentWeldLog, &$createdCount, &$updatedCount)
    {
        // Check for required field
        if (empty($currentWeldLog->line_number)) {
            return;
        }
        
        // Get line list data (for additional information)
        $lineList = db("line_lists")
            ->where('line_no', $currentWeldLog->line_number)
            ->first();
        
        // Handover data
        $handoverData = [
            // Mapping: weld_logs -> handovers
            'project' => $currentWeldLog->line_number,        // line_number -> location (zone instead)
            'work_type' => 'ТРУБКА',     // piping_type -> work_type
            'object' => $currentWeldLog->project ?? '',           // project -> object
            'location' => $currentWeldLog->design_area ?? '',      // design_area -> project
            
            // Status information
            'status1' => 'In Progress',
            'updated_at' => now()
        ];
        
        // Where condition - location (line_number) and object (project) for unique record
        $whereCondition = [
            'project' => $currentWeldLog->line_number,
        ];
        
        // Check if existing record exists
        $existingRecord = db("handovers")
            ->where($whereCondition)
            ->first();

        // Calculate volumes logic (mirrors hand-over.blade.php)
        $collected = 0;
        $notCollected = 1;

        if ($existingRecord) {
            $collected = (float) $existingRecord->collected_volumes;
            // If existing record has specific value, use it, but check the "default to 1 if 0" rule
            $notCollected = (float) $existingRecord->not_collected_volumes;
        }

        // Logic: if not_collected is 0 or empty, make it 1
        if (empty($notCollected) || $notCollected == 0) {
            $notCollected = 1;
        }

        $totalVolumes = $collected + $notCollected;

        $handoverData['not_collected_volumes'] = $notCollected;
        $handoverData['total_volumes'] = $totalVolumes;

        // Calculate id_status logic
        $handoverControlCount = (int) setting('handover_control_count', 3);
        $idStatus = '';
        $allAgreed = true;
        $hasController = false;

        for ($i = 1; $i <= $handoverControlCount; $i++) {
            $statusField = "control{$i}_id_status";
            $controllerField = "control{$i}_controller";

            $statusValue = $existingRecord ? $existingRecord->$statusField : null;
            $controllerValue = $existingRecord ? $existingRecord->$controllerField : null;

            if ($controllerValue) {
                $hasController = true;

                if ($statusValue == 'Comment / замечание') {
                    $idStatus = 'Comment / замечание';
                    $allAgreed = false;
                    break;
                }
                if ($statusValue == 'Revision / Редакция') {
                    $idStatus = 'Revision / Редакция';
                    $allAgreed = false;
                    break;
                }

                if ($statusValue != 'Agreed / подписано') {
                    $allAgreed = false;
                }
            }
        }

        if ($idStatus === '') {
            if ($allAgreed && $hasController) {
                $archiveValue = $existingRecord ? $existingRecord->archive : null;
                $idStatus = $archiveValue ? $archiveValue : 'Agreed / подписано';
            } else {
                $idStatus = 'Wait - Not Prepared';
            }
        }

        $handoverData['id_status'] = $idStatus;
            
        if ($existingRecord) {
            // Update existing record
            db("handovers")
                ->where('id', $existingRecord->id)
                ->update($handoverData);
            $updatedCount++;
        } else {
            // Create new record
            $handoverData['created_at'] = now();
            db("handovers")->insert($handoverData);
            $createdCount++;
        }
    }
}