<?php

namespace App\Services\WeldLogTriggers\Triggers;

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

/**
 * NDE Matrix Update Trigger
 * 
 * Syncs data between Line Lists, NDE Matrix, and WeldLogs
 * Handles type_of_welds changes and updates NDE test scope percentages
 */
class NdeMatrixUpdateTrigger extends BaseTrigger
{
    public function getName(): string
    {
        return 'NDE Matrix Update';
    }
    
    public function getOrder(): int
    {
        return 3;
    }
    
    public function getDependentFields(): array
    {
        return [
            'type_of_welds', 
            'fluid_code', 
            'type_of_joint',
            'line_number',
            'design_area',
            'project'
        ];
    }
    
    protected function process($data, $beforeData, array $context): array
    {
        try {
            // Sync data from Line Lists to NDE Matrix via view render
            $ndeMatrixView = view('cron.line_lists-sync-from-linelists-nde-matrix', [
                'line_number' => $data->line_number,
                'design_area' => $data->design_area,
                'commitSize' => 5, // Chunk size for transaction batching
                'triggerMode' => true // Called from SaveTrigger
            ])->render();
            
            Log::info("Line Lists to NDE Matrix sync completed via view render", [
                'line_number' => $data->line_number,
                'design_area' => $data->design_area
            ]);

            // Special handling for type_of_welds change
            if (!is_null($beforeData) && $beforeData->type_of_welds !== $data->type_of_welds) {
                TransactionHelper::retryTransaction(function () use ($data, $beforeData) {
                    // Where condition for old type
                    $oldTypeWhereData = [
                        'line' => $data->line_number,
                        'type_of_joint' => $beforeData->type_of_welds,
                        'fluid' => $data->fluid_code,
                    ];

                    // Check if old type is still used by other WeldLog records
                    $otherRecordsUsingOldType = db("weld_logs")
                        ->where('line_number', $data->line_number)
                        ->where('type_of_welds', $beforeData->type_of_welds)
                        ->where('fluid_code', $data->fluid_code)
                        ->where('id', '!=', $data->id)
                        ->orderBy('id', 'ASC') // Deadlock prevention
                        ->exists();
                        
                    // Delete from NDE Matrix only if old type is not used elsewhere
                    if (!$otherRecordsUsingOldType) {
                        $deleteResult = db("nde_matrices")
                            ->where($oldTypeWhereData)
                            ->delete();
                        
                        Log::info("NDE Matrix old type cleaned up - no other weld logs using it", [
                            'line' => $data->line_number,
                            'old_type_of_joint' => $beforeData->type_of_welds,
                            'new_type_of_joint' => $data->type_of_welds,
                            'fluid' => $data->fluid_code,
                            'delete_result' => $deleteResult
                        ]);
                    } else {
                        Log::info("NDE Matrix old type preserved - still used by other weld logs", [
                            'line' => $data->line_number,
                            'old_type_of_joint' => $beforeData->type_of_welds,
                            'new_type_of_joint' => $data->type_of_welds,
                            'fluid' => $data->fluid_code
                        ]);
                    }
                }, 5); // 5 attempts with exponential backoff
            }
            
        } catch (\Throwable $th) {
            Log::error("NDE Matrix sync error: " . $th->getMessage(), [
                'line_number' => $data->line_number,
                'design_area' => $data->design_area
            ]);
            throw $th;
        }
        
        // Sync from NDE Matrix to WeldLog
        return $this->syncNdeMatrixToWeldLog($data);
    }
    
    /**
     * Sync NDE Matrix data to WeldLog
     * Updates scope percentages and other NDE-related fields
     */
    protected function syncNdeMatrixToWeldLog($data): array
    {
        // fluid_code null check - get from line_lists if needed
        $currentFluidCode = $data->fluid_code ?? '';
        if(empty($currentFluidCode)) {
            $lineListForFluid = db("line_lists")->where('line_no', $data->line_number)->first();
            if($lineListForFluid) {
                $currentFluidCode = $lineListForFluid->fluid_code ?? '';
            }
        }

        Log::info("NDE Matrix to WeldLog sync started", [
            'weld_log_id' => $data->id,
            'line_number' => $data->line_number,
            'type_of_welds' => $data->type_of_welds,
            'fluid_code' => $currentFluidCode
        ]);

        // Skip if fluid_code is null
        if(empty($currentFluidCode)) {
            Log::info("NDE Matrix to WeldLog sync skipped - fluid_code is null", [
                'weld_log_id' => $data->id,
                'line_number' => $data->line_number
            ]);
            return ['skipped' => true, 'reason' => 'fluid_code_null'];
        }
        
        // Get NDE Matrix records
        $ndeMatrices = NdeMatrix::where("line", $data->line_number)
            ->where("type_of_joint", $data->type_of_welds)
            ->where("fluid", $currentFluidCode)
            ->get();

        Log::debug("NDE Matrix records retrieved", [
            'matrix_count' => $ndeMatrices->count(),
            'matrix_examples' => $ndeMatrices->take(2)->toArray()
        ]);

        $ndeToWeldLogUpdateCount = 0;

        // Process NDE Matrix in chunks with TransactionHelper
        Log::debug("NDE Matrix to WeldLog sync starting", [
            'total_records' => $ndeMatrices->count()
        ]);

        TransactionHelper::chunkTransaction(
            $ndeMatrices,
            function ($ndeMatrixChunk) use (&$ndeToWeldLogUpdateCount) {
                foreach($ndeMatrixChunk as $ndeMatrix) {
                    $weldLogUpdateData = [
                        'vt_scope' => 100,
                        'rt_scope' => $ndeMatrix->rt,
                        'ut_scope' => $ndeMatrix->ut,
                        'mt_scope' => $ndeMatrix->mt,
                        'pt_scope' => $ndeMatrix->pt,
                        'pmi_scope' => $ndeMatrix->pmi,
                        'ht_scope' => $ndeMatrix->ht,
                        'pwht' => $ndeMatrix->pwht_field,
                        'ferrite_scope' => $ndeMatrix->fn,
                        'ndt_percent' => $ndeMatrix->ndt,
                        'operating_temperature_s' => $ndeMatrix->operation_temp,
                        'operating_pressure_mpa' => $ndeMatrix->operations_pressure_kg,
                        'fluid_group' => $ndeMatrix->piping_group,
                        'main_material' => $ndeMatrix->material,
                        'updated_at' => simdi()
                    ];

                    $result = db("weld_logs")
                        ->where("line_number", $ndeMatrix->line)
                        ->where("type_of_welds", $ndeMatrix->type_of_joint)
                        ->orderBy('id', 'ASC') // Deadlock prevention
                        ->update($weldLogUpdateData);

                    $ndeToWeldLogUpdateCount += $result;
                }
                return $ndeMatrixChunk->count();
            },
            10, // Chunk size increased from 3 to 10 for better performance
            10000 // 10ms delay (reduced from 150ms) - sufficient for deadlock prevention
        );

        Log::info("NDE Matrix to WeldLog sync completed", [
            'total_updated_records' => $ndeToWeldLogUpdateCount
        ]);
        
        return [
            'success' => true,
            'updated_records' => $ndeToWeldLogUpdateCount
        ];
    }
}