<?php

namespace App\Imports;

use Illuminate\Support\Collection;
use Maatwebsite\Excel\Row;
use Maatwebsite\Excel\Concerns\OnEachRow;
use Maatwebsite\Excel\Events\AfterImport;
use Maatwebsite\Excel\Events\BeforeImport;
use Maatwebsite\Excel\Concerns\WithEvents;
use Maatwebsite\Excel\Concerns\ToCollection;
use Maatwebsite\Excel\Concerns\WithChunkReading;
use Maatwebsite\Excel\Concerns\WithBatchInserts;
use Maatwebsite\Excel\Concerns\RemembersChunkOffset;
use Maatwebsite\Excel\Concerns\WithProgressBar;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Support\Facades\DB;

use Maatwebsite\Excel\Concerns\Importable;
use Carbon\Carbon;
use Cache;
use \PhpOffice\PhpSpreadsheet\Shared\Date;

class ImportExcel implements 
    ToCollection, 
    WithProgressBar,
    WithChunkReading,
    ShouldQueue, 
    WithBatchInserts,
    WithEvents
{
    public $tableName;
    use RemembersChunkOffset;
    use Importable;
    public $firstRow = null;
    public $columnTypes = [];
    public $id;


    public function __construct(string $tableName, int $id) 
    {
        $this->tableName = $tableName;
        $this->id = $id;
    }

    
    public function unsetColumns($refactoringRow) {
        $unsetColumns = [
           // 'id'
            
        ];
        foreach($unsetColumns AS $unsetColumn) {
            unset($refactoringRow[$unsetColumn]);
        }
        return $refactoringRow;
    }

    public function getNameAndBirthToUserId($welderName, $welderNameRu, $yearOfBirth) {
        //dump($yearOfBirth);
        $user = db("users")
            ->where("name", $welderName)
            ->where("name_ru", $welderNameRu)
      //  ->where("date_of_birth", $yearOfBirth)
            ->first();
        //dd($user);
        if($user) {
            return $user->id;
        } else {
            return null;
        }
        
    }

    public function registerEvents(): array
    {
        return [
            BeforeImport::class => function (BeforeImport $event) {
                $totalRows = $event->getReader()->getTotalRows();

                if (filled($totalRows)) {
                    cache()->forever("total_rows_{$this->id}", array_values($totalRows)[0]);
                    cache()->forever("start_date_{$this->id}", now()->unix());
                }
            },
            AfterImport::class => function (AfterImport $event) {
                cache(["end_date_{$this->id}" => now()], now()->addMinute());
                cache()->forget("total_rows_{$this->id}");
                cache()->forget("start_date_{$this->id}");
                cache()->forget("current_row_{$this->id}");
            },
        ];
    }

    public function onRow(Row $row)
    {
        $rowIndex = $row->getIndex();
        $row      = array_map('trim', $row->toArray());
        cache()->forever("current_row_{$this->id}", $rowIndex);
    }

    /**
    * @param Collection $collection
    */
    public function collection(Collection $collection)
    {
        set_time_limit(-1);
        DB::beginTransaction();
        try {
            $chunkOffset = $this->getChunkOffset();
            $insertArray = []; 

            $totalRowCount = count($collection);

            
            $excelPrefix = "excel_process";
            $excelLogPath = "$excelPrefix.txt";

            $excelColumnPrefix = $this->tableName . "_excel_columns";
            $excelColumnTypesPrefix = $this->tableName . "_excel_column_types";
            if(!Cache::has($excelColumnPrefix)) {
                $firstRow = $collection[0];
                $this->firstRow = $firstRow;
                Cache::put($excelColumnPrefix, $firstRow);
                $otherRow = $collection;
                
        
                $data = [];
                
                foreach($firstRow AS $column) {
                    if(!is_null($column)) {
                        $columnType = table_column_type($this->tableName, $column);
                        $columnTypes[$column] = $columnType;
                    }
                    
                }
                Cache::put($excelColumnTypesPrefix, $columnTypes);

                $this->columnTypes = $columnTypes;
            } else {
                $otherRow = $collection;
                $firstRow = Cache::get($excelColumnPrefix);//$this->firstRow;
                $columnTypes = Cache::get($excelColumnTypesPrefix);//$this->columnTypes;
            }
            unset($otherRow[0]);


            $processRowCount=0;
            $error = false;
            $added = 0;
            $updated = 0;
            $updateOrAdded = 0;
            
            foreach($otherRow AS $row) {

                if($this->tableName== "naks_welders") {

                    if(is_null($row[1])) {
                        $getUserId = $this->getNameAndBirthToUserId($row[3], $row[2], $row[4]);
                        if(!is_null($getUserId)) {
                            $row[1] = $getUserId;
                        }
                        
                    }
                }

                $columnKey = 0;
                $refactoringRow = [];
                foreach($firstRow AS $column) {
                    
                    if($column!="")  { 
                        $columnType =  $columnTypes[$column];

                        if($columnType=="date") {
                            
                            if($row[$columnKey] == "1970-01-01") {
                                $refactoringRow[$column] = null;
                            } else {

                                try {
                                    if(!is_null($row[$columnKey])) {
                                        $refactoringRow[$column] = Date::excelToDateTimeObject($row[$columnKey]);
                                    } else {
                                        $refactoringRow[$column] = null;
                                    }
                                    
                                } catch (\Throwable $th) {
                                    
                                    $refactoringRow[$column] = null;
                                
                                
                                }
                            }
                            
                        } elseif($columnType=="integer") {
                            $refactoringRow[$column] = (int) $row[$columnKey];
                        } elseif($columnType=="float") {
                            $refactoringRow[$column] =  (float) $row[$columnKey];
                        } else {
                            $refactoringRow[$column] = $row[$columnKey];
                        }
                        
                        $columnKey++; 
                    }
                }
                $refactoringRow['created_at'] = simdi();
                $refactoringRow['updated_at'] = simdi();
                
                if(!isset($refactoringRow['id'])) {
                    $refactoringRow['id']=="";
                }
                if($refactoringRow['id']=="") {
                    unset($refactoringRow['id']);
                   // $insertArray[] = $refactoringRow;

                   if($this->tableName == "m_t_o_s") {

                        foreach($insertArray AS $insertItem) {
                            $insertItem['created_at'] = simdi();
                            $insertItem['updated_at'] = simdi();
                            db($this->tableName)->updateOrInsert([
                                'line' => $insertItem['line'],
                                'component_code_id' => $insertItem['component_code_id'],
                            ], $insertItem);
                            
                            $updateOrAdded++;
                        }         
                        
                    } else {
                        $updateOrInsert = false;
                        if(array_key_exists("iso_number", $refactoringRow)) {
                            if(array_key_exists("no_of_the_joint_as_per_as_built_survey", $refactoringRow)) {
                                $updateOrInsert = true;
                                
                            }
                        }
                        
                        if($updateOrInsert) {
                            db($this->tableName)->updateOrInsert([
                                'no_of_the_joint_as_per_as_built_survey' => $refactoringRow['no_of_the_joint_as_per_as_built_survey'],
                                'iso_number' => $refactoringRow['iso_number'],
                            ],
                            $refactoringRow);

                            $updateOrAdded++;
                        } else {
                            db($this->tableName)->insert($refactoringRow);
                            $added++;
                        }
                        
                    }
                   
                    
                } else {
                    $updateOrInsertData = $this->unsetColumns($refactoringRow);
                    db($this->tableName)->updateOrInsert([
                        'id' => $refactoringRow['id']
                    ], $updateOrInsertData);
                    $updateOrAdded++;
                
                }

                $processRowCount++;
            }


            DB::commit();
        } catch (\Throwable $th) {
            DB::rollback();
            $error = $firstRow .   $th->getMessage();
            Cache::forget($excelColumnPrefix);
        }

        $response = [
            'processRow' => $processRowCount,
            'added' => $added,
            'updateOrAdded' => $updateOrAdded,
            'error' => $error
        ];
        Cache::forget($excelColumnPrefix);

        echo json_encode_tr($response);
        
       
    }

    public function chunkSize(): int
    {
        return 100000;
    }
    public function batchSize(): int
    {
        return 10000;
    }
}