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✏️ Editing: CanImportRecords.php

<?php

namespace Filament\Actions\Concerns;

use Closure;
use Filament\Actions\Action;
use Filament\Actions\ImportAction;
use Filament\Actions\Imports\ImportColumn;
use Filament\Actions\Imports\Importer;
use Filament\Actions\Imports\Jobs\ImportCsv;
use Filament\Actions\Imports\Models\Import;
use Filament\Forms;
use Filament\Forms\Components\Fieldset;
use Filament\Forms\Components\FileUpload;
use Filament\Forms\Components\Select;
use Filament\Notifications\Actions\Action as NotificationAction;
use Filament\Notifications\Notification;
use Filament\Support\ChunkIterator;
use Filament\Support\Facades\FilamentIcon;
use Filament\Tables\Actions\Action as TableAction;
use Filament\Tables\Actions\ImportAction as ImportTableAction;
use Illuminate\Bus\PendingBatch;
use Illuminate\Contracts\Auth\Authenticatable;
use Illuminate\Contracts\Support\Htmlable;
use Illuminate\Filesystem\AwsS3V3Adapter;
use Illuminate\Support\Arr;
use Illuminate\Support\Facades\Bus;
use Illuminate\Support\Facades\Storage;
use Illuminate\Support\Number;
use Illuminate\Validation\ValidationException;
use League\Csv\ByteSequence;
use League\Csv\Info;
use League\Csv\Reader as CsvReader;
use League\Csv\Statement;
use League\Csv\Writer;
use Livewire\Component;
use Livewire\Features\SupportFileUploads\TemporaryUploadedFile;
use SplTempFileObject;
use Symfony\Component\HttpFoundation\StreamedResponse;

trait CanImportRecords
{
    /**
     * @var class-string<Importer>
     */
    protected string $importer;

protected ?string $job = null;

protected int | Closure $chunkSize = 100;

protected int | Closure | null $maxRows = null;

protected int | Closure | null $headerOffset = null;

protected string | Closure | null $csvDelimiter = null;

/**
     * @var array<string, mixed> | Closure
     */
    protected array | Closure $options = [];

protected function setUp(): void
    {
        parent::setUp();

$this->label(fn (ImportAction | ImportTableAction $action): string => __('filament-actions::import.label', ['label' => $action->getPluralModelLabel()]));

$this->modalHeading(fn (ImportAction | ImportTableAction $action): string => __('filament-actions::import.modal.heading', ['label' => $action->getPluralModelLabel()]));

$this->modalDescription(fn (ImportAction | ImportTableAction $action): Htmlable => $action->getModalAction('downloadExample'));

$this->modalSubmitActionLabel(__('filament-actions::import.modal.actions.import.label'));

$this->groupedIcon(FilamentIcon::resolve('actions::import-action.grouped') ?? 'heroicon-m-arrow-up-tray');

$this->form(fn (ImportAction | ImportTableAction $action): array => array_merge([
            FileUpload::make('file')
                ->label(__('filament-actions::import.modal.form.file.label'))
                ->placeholder(__('filament-actions::import.modal.form.file.placeholder'))
                ->acceptedFileTypes(['text/csv', 'text/x-csv', 'application/csv', 'application/x-csv', 'text/comma-separated-values', 'text/x-comma-separated-values', 'text/plain', 'application/vnd.ms-excel'])
                ->rule('extensions:csv,txt')
                ->afterStateUpdated(function (FileUpload $component, Component $livewire, Forms\Set $set, ?TemporaryUploadedFile $state) use ($action) {
                    if (! $state instanceof TemporaryUploadedFile) {
                        return;
                    }

try {
                        $livewire->validateOnly($component->getStatePath());
                    } catch (ValidationException $exception) {
                        $component->state([]);

throw $exception;
                    }

$csvStream = $this->getUploadedFileStream($state);

if (! $csvStream) {
                        return;
                    }

$csvReader = CsvReader::createFromStream($csvStream);

if (filled($csvDelimiter = $this->getCsvDelimiter($csvReader))) {
                        $csvReader->setDelimiter($csvDelimiter);
                    }

$csvReader->setHeaderOffset($action->getHeaderOffset() ?? 0);

$csvColumns = $csvReader->getHeader();

$lowercaseCsvColumnValues = array_map('strtolower', $csvColumns);
                    $lowercaseCsvColumnKeys = array_combine(
                        $lowercaseCsvColumnValues,
                        $csvColumns,
                    );

$set('columnMap', array_reduce($action->getImporter()::getColumns(), function (array $carry, ImportColumn $column) use ($lowercaseCsvColumnKeys, $lowercaseCsvColumnValues) {
                        $carry[$column->getName()] = $lowercaseCsvColumnKeys[
                        Arr::first(
                            array_intersect(
                                $lowercaseCsvColumnValues,
                                $column->getGuesses(),
                            ),
                        )
                        ] ?? null;

return $carry;
                    }, []));
                })
                ->storeFiles(false)
                ->visibility('private')
                ->required()
                ->hiddenLabel(),
            Fieldset::make(__('filament-actions::import.modal.form.columns.label'))
                ->columns(1)
                ->inlineLabel()
                ->schema(function (Forms\Get $get) use ($action): array {
                    $csvFile = Arr::first((array) ($get('file') ?? []));

if (! $csvFile instanceof TemporaryUploadedFile) {
                        return [];
                    }

$csvStream = $this->getUploadedFileStream($csvFile);

if (! $csvStream) {
                        return [];
                    }

$csvReader = CsvReader::createFromStream($csvStream);

if (filled($csvDelimiter = $this->getCsvDelimiter($csvReader))) {
                        $csvReader->setDelimiter($csvDelimiter);
                    }

$csvReader->setHeaderOffset($action->getHeaderOffset() ?? 0);

$csvColumns = $csvReader->getHeader();
                    $csvColumnOptions = array_combine($csvColumns, $csvColumns);

return array_map(
                        fn (ImportColumn $column): Select => $column->getSelect()->options($csvColumnOptions),
                        $action->getImporter()::getColumns(),
                    );
                })
                ->statePath('columnMap')
                ->visible(fn (Forms\Get $get): bool => Arr::first((array) ($get('file') ?? [])) instanceof TemporaryUploadedFile),
        ], $action->getImporter()::getOptionsFormComponents()));

$this->action(function (ImportAction | ImportTableAction $action, array $data) {
            /** @var TemporaryUploadedFile $csvFile */
            $csvFile = $data['file'];

$csvStream = $this->getUploadedFileStream($csvFile);

if (! $csvStream) {
                return;
            }

$csvReader = CsvReader::createFromStream($csvStream);

if (filled($csvDelimiter = $this->getCsvDelimiter($csvReader))) {
                $csvReader->setDelimiter($csvDelimiter);
            }

$csvReader->setHeaderOffset($action->getHeaderOffset() ?? 0);
            $csvResults = Statement::create()->process($csvReader);

$totalRows = $csvResults->count();
            $maxRows = $action->getMaxRows() ?? $totalRows;

if ($maxRows < $totalRows) {
                Notification::make()
                    ->title(__('filament-actions::import.notifications.max_rows.title'))
                    ->body(trans_choice('filament-actions::import.notifications.max_rows.body', $maxRows, [
                        'count' => Number::format($maxRows),
                    ]))
                    ->danger()
                    ->send();

return;
            }

$user = auth()->user();

$import = app(Import::class);
            $import->user()->associate($user);
            $import->file_name = $csvFile->getClientOriginalName();
            $import->file_path = $csvFile->getRealPath();
            $import->importer = $action->getImporter();
            $import->total_rows = $totalRows;
            $import->save();

$importChunkIterator = new ChunkIterator($csvResults->getRecords(), chunkSize: $action->getChunkSize());

/** @var array<array<array<string, string>>> $importChunks */
            $importChunks = $importChunkIterator->get();

$job = $action->getJob();

$options = array_merge(
                $action->getOptions(),
                Arr::except($data, ['file', 'columnMap']),
            );

// We do not want to send the loaded user relationship to the queue in job payloads,
            // in case it contains attributes that are not serializable, such as binary columns.
            $import->unsetRelation('user');

$importJobs = collect($importChunks)
                ->map(fn (array $importChunk): object => new ($job)(
                    $import,
                    rows: base64_encode(serialize($importChunk)),
                    columnMap: $data['columnMap'],
                    options: $options,
                ));

$importer = $import->getImporter(
                columnMap: $data['columnMap'],
                options: $options,
            );

Bus::batch($importJobs->all())
                ->allowFailures()
                ->when(
                    filled($jobQueue = $importer->getJobQueue()),
                    fn (PendingBatch $batch) => $batch->onQueue($jobQueue),
                )
                ->when(
                    filled($jobConnection = $importer->getJobConnection()),
                    fn (PendingBatch $batch) => $batch->onConnection($jobConnection),
                )
                ->when(
                    filled($jobBatchName = $importer->getJobBatchName()),
                    fn (PendingBatch $batch) => $batch->name($jobBatchName),
                )
                ->finally(function () use ($import) {
                    $import->touch('completed_at');

if (! $import->user instanceof Authenticatable) {
                        return;
                    }

$failedRowsCount = $import->getFailedRowsCount();

Notification::make()
                        ->title(__('filament-actions::import.notifications.completed.title'))
                        ->body($import->importer::getCompletedNotificationBody($import))
                        ->when(
                            ! $failedRowsCount,
                            fn (Notification $notification) => $notification->success(),
                        )
                        ->when(
                            $failedRowsCount && ($failedRowsCount < $import->total_rows),
                            fn (Notification $notification) => $notification->warning(),
                        )
                        ->when(
                            $failedRowsCount === $import->total_rows,
                            fn (Notification $notification) => $notification->danger(),
                        )
                        ->when(
                            $failedRowsCount,
                            fn (Notification $notification) => $notification->actions([
                                NotificationAction::make('downloadFailedRowsCsv')
                                    ->label(trans_choice('filament-actions::import.notifications.completed.actions.download_failed_rows_csv.label', $failedRowsCount, [
                                        'count' => Number::format($failedRowsCount),
                                    ]))
                                    ->color('danger')
                                    ->url(route('filament.imports.failed-rows.download', ['import' => $import], absolute: false), shouldOpenInNewTab: true)
                                    ->markAsRead(),
                            ]),
                        )
                        ->sendToDatabase($import->user);
                })
                ->dispatch();

Notification::make()
                ->title($action->getSuccessNotificationTitle())
                ->body(trans_choice('filament-actions::import.notifications.started.body', $import->total_rows, [
                    'count' => Number::format($import->total_rows),
                ]))
                ->success()
                ->send();
        });

$this->registerModalActions([
            (match (true) {
                $this instanceof TableAction => TableAction::class,
                default => Action::class,
            })::make('downloadExample')
                ->label(__('filament-actions::import.modal.actions.download_example.label'))
                ->link()
                ->action(function (): StreamedResponse {
                    $columns = $this->getImporter()::getColumns();

$csv = Writer::createFromFileObject(new SplTempFileObject());

if (filled($csvDelimiter = $this->getCsvDelimiter())) {
                        $csv->setDelimiter($csvDelimiter);
                    }

$csv->insertOne(array_map(
                        fn (ImportColumn $column): string => $column->getExampleHeader(),
                        $columns,
                    ));

$example = array_map(
                        fn (ImportColumn $column) => $column->getExample(),
                        $columns,
                    );

if (array_filter(
                        $example,
                        fn ($value): bool => filled($value),
                    )) {
                        $csv->insertOne($example);
                    }

return response()->streamDownload(function () use ($csv) {
                        $csv->setOutputBOM(ByteSequence::BOM_UTF8);

echo $csv->toString();
                    }, __('filament-actions::import.example_csv.file_name', ['importer' => (string) str($this->getImporter())->classBasename()->kebab()]), [
                        'Content-Type' => 'text/csv; charset=UTF-8',
                    ]);
                }),
        ]);

$this->color('gray');

$this->modalWidth('xl');

$this->successNotificationTitle(__('filament-actions::import.notifications.started.title'));

$this->model(fn (ImportAction | ImportTableAction $action): string => $action->getImporter()::getModel());
    }

/**
     * @return resource | false
     */
    public function getUploadedFileStream(TemporaryUploadedFile $file)
    {
        $filePath = $file->getRealPath();

if (config('filesystems.disks.' . config('filament.default_filesystem_disk') . '.driver') !== 's3') {
            return fopen($filePath, mode: 'r');
        }

/** @var AwsS3V3Adapter $s3Adapter */
        $s3Adapter = Storage::disk('s3')->getAdapter();

invade($s3Adapter)->client->registerStreamWrapper(); /** @phpstan-ignore-line */
        $fileS3Path = 's3://' . config('filesystems.disks.s3.bucket') . '/' . $filePath;

return fopen($fileS3Path, mode: 'r', context: stream_context_create([
            's3' => [
                'seekable' => true,
            ],
        ]));
    }

public static function getDefaultName(): ?string
    {
        return 'import';
    }

/**
     * @param  class-string<Importer>  $importer
     */
    public function importer(string $importer): static
    {
        $this->importer = $importer;

return $this;
    }

/**
     * @param  class-string | null  $job
     */
    public function job(?string $job): static
    {
        $this->job = $job;

return $this;
    }

public function chunkSize(int | Closure $size): static
    {
        $this->chunkSize = $size;

return $this;
    }

public function maxRows(int | Closure | null $rows): static
    {
        $this->maxRows = $rows;

return $this;
    }

public function headerOffset(int | Closure | null $offset): static
    {
        $this->headerOffset = $offset;

return $this;
    }

public function csvDelimiter(string | Closure | null $delimiter): static
    {
        $this->csvDelimiter = $delimiter;

return $this;
    }

/**
     * @return class-string<Importer>
     */
    public function getImporter(): string
    {
        return $this->importer;
    }

/**
     * @return class-string
     */
    public function getJob(): string
    {
        return $this->job ?? ImportCsv::class;
    }

public function getChunkSize(): int
    {
        return $this->evaluate($this->chunkSize);
    }

public function getMaxRows(): ?int
    {
        return $this->evaluate($this->maxRows);
    }

public function getHeaderOffset(): ?int
    {
        return $this->evaluate($this->headerOffset);
    }

public function getCsvDelimiter(?CsvReader $reader = null): ?string
    {
        return $this->evaluate($this->csvDelimiter) ?? $this->guessCsvDelimiter($reader);
    }

protected function guessCsvDelimiter(?CsvReader $reader = null): ?string
    {
        if (! $reader) {
            return null;
        }

$delimiterCounts = Info::getDelimiterStats($reader, delimiters: [',', ';', '|', "\t"], limit: 10);

return array_search(max($delimiterCounts), $delimiterCounts);
    }

/**
     * @param  array<string, mixed> | Closure  $options
     */
    public function options(array | Closure $options): static
    {
        $this->options = $options;

return $this;
    }

/**
     * @return array<string, mixed>
     */
    public function getOptions(): array
    {
        return $this->evaluate($this->options);
    }
}

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