<?php

namespace App\Filament\Imports;

use App\Models\GrMaster;
use Filament\Actions\Imports\ImportColumn;
use Filament\Actions\Imports\Importer;
use Filament\Actions\Imports\Models\Import;
use App\Models\Plant;
use App\Models\Item;
use Str;
use Filament\Actions\Imports\Exceptions\RowImportFailedException;
use App\Models\User;

class GrMasterImporter extends Importer
{
    protected static ?string $model = GrMaster::class;

    public static function getColumns(): array
    {
        return [
            ImportColumn::make('plant')
                ->requiredMapping()
                ->exampleHeader('Plant Name')
                ->example('Ransar Industries-I')
                ->label('Plant Name')
                ->relationship(resolveUsing:'name')
                ->rules(['required']),
            ImportColumn::make('item')
                ->requiredMapping()
                ->exampleHeader('Item Code')
                ->example('630214')
                ->label('Item Code')
                ->relationship(resolveUsing:'code')
                ->rules(['required']),
            ImportColumn::make('serial_number')
                ->requiredMapping()
                ->exampleHeader('Serial Number')
                ->example('11023567567567')
                ->label('Serial Number')
                ->rules(['required']),
            ImportColumn::make('gr_number')
                ->requiredMapping()
                ->exampleHeader('GR Number')
                ->example('67345237')
                ->label('GR Number')
                ->rules(['required']),
            ImportColumn::make('created_by')
                ->requiredMapping()
                ->exampleHeader('Created By')
                ->example('Admin')
                ->label('Created By')
                ->rules(['required']),
            //ImportColumn::make('updated_by'),
        ];
    }

    public function resolveRecord(): ?GrMaster
    {
        // return GrMaster::firstOrNew([
        //     // Update existing records, matching them by `$this->data['column_name']`
        //     'email' => $this->data['email'],
        // ]);

        $warnMsg = [];

        $plant = Plant::where('name', $this->data['plant'])->first();

        if (!$plant) {
            $warnMsg[] = "Plant not found";
        }

        $item = null;
        if ($plant) {
            $item = Item::where('code', $this->data['item'])->where('plant_id', $plant->id)->first();
        }
        if (!$item) {
            $warnMsg[] = "Item not found";
        }
        if (Str::length($this->data['serial_number']) < 9 || !ctype_alnum($this->data['serial_number'])) {
            $warnMsg[] = "Invalid serial number found";
        }

        if (empty($this->data['gr_number'])) {
            $warnMsg[] = "GR Number cannot be empty.";
        }

        $user = User::where('name', $this->data['created_by'])->first();
        if (!$user) {
            $warnMsg[] = "User not found";
        }

        if (!empty($warnMsg)) {
            throw new RowImportFailedException(implode(', ', $warnMsg));
        }
        else { //if (empty($warnMsg))
            $grMaster = GrMaster::where('plant_id', $plant->id)
            ->where('serial_number', $this->data['serial_number'])
            ->latest()
            ->first();

            if ($grMaster) {
                throw new RowImportFailedException("Serial number already exist!");
            }
        }

        GrMaster::updateOrCreate([
            'plant_id' => $plant->id,
            'item_id' => $item->id,
            'serial_number' => $this->data['serial_number'],
            'gr_number' => $this->data['gr_number'] ?? null,
            'created_by' => $this->data['created_by'],
        ]);

        return null;
        //return new GrMaster();
    }

    public static function getCompletedNotificationBody(Import $import): string
    {
        $body = 'Your gr master import has completed and ' . number_format($import->successful_rows) . ' ' . str('row')->plural($import->successful_rows) . ' imported.';

        if ($failedRowsCount = $import->getFailedRowsCount()) {
            $body .= ' ' . number_format($failedRowsCount) . ' ' . str('row')->plural($failedRowsCount) . ' failed to import.';
        }

        return $body;
    }
}