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<?php
namespace Maatwebsite\Excel;
use Illuminate\Foundation\Bus\PendingDispatch;
use Illuminate\Support\Collection;
use Maatwebsite\Excel\Concerns\FromCollection;
use Maatwebsite\Excel\Concerns\FromQuery;
use Maatwebsite\Excel\Concerns\FromView;
use Maatwebsite\Excel\Concerns\WithCustomChunkSize;
use Maatwebsite\Excel\Concerns\WithCustomQuerySize;
use Maatwebsite\Excel\Concerns\WithMultipleSheets;
use Maatwebsite\Excel\Files\TemporaryFile;
use Maatwebsite\Excel\Files\TemporaryFileFactory;
use Maatwebsite\Excel\Jobs\AppendDataToSheet;
use Maatwebsite\Excel\Jobs\AppendQueryToSheet;
use Maatwebsite\Excel\Jobs\AppendViewToSheet;
use Maatwebsite\Excel\Jobs\CloseSheet;
use Maatwebsite\Excel\Jobs\QueueExport;
use Maatwebsite\Excel\Jobs\StoreQueuedExport;
use Traversable;
class QueuedWriter
{
/**
* @var Writer
*/
protected $writer;
/**
* @var int
*/
protected $chunkSize;
/**
* @var TemporaryFileFactory
*/
protected $temporaryFileFactory;
/**
* @param Writer $writer
* @param TemporaryFileFactory $temporaryFileFactory
*/
public function __construct(Writer $writer, TemporaryFileFactory $temporaryFileFactory)
{
$this->writer = $writer;
$this->chunkSize = config('excel.exports.chunk_size', 1000);
$this->temporaryFileFactory = $temporaryFileFactory;
}
/**
* @param object $export
* @param string $filePath
* @param string $disk
* @param string|null $writerType
* @param array|string $diskOptions
*
* @return \Illuminate\Foundation\Bus\PendingDispatch
*/
public function store($export, string $filePath, string $disk = null, string $writerType = null, $diskOptions = [])
{
$extension = pathinfo($filePath, PATHINFO_EXTENSION);
$temporaryFile = $this->temporaryFileFactory->make($extension);
$jobs = $this->buildExportJobs($export, $temporaryFile, $writerType);
$jobs->push(new StoreQueuedExport(
$temporaryFile,
$filePath,
$disk,
$diskOptions
));
return new PendingDispatch(
(new QueueExport($export, $temporaryFile, $writerType))->chain($jobs->toArray())
);
}
/**
* @param object $export
* @param TemporaryFile $temporaryFile
* @param string $writerType
*
* @return Collection
*/
private function buildExportJobs($export, TemporaryFile $temporaryFile, string $writerType): Collection
{
$sheetExports = [$export];
if ($export instanceof WithMultipleSheets) {
$sheetExports = $export->sheets();
}
$jobs = new Collection;
foreach ($sheetExports as $sheetIndex => $sheetExport) {
if ($sheetExport instanceof FromCollection) {
$jobs = $jobs->merge($this->exportCollection($sheetExport, $temporaryFile, $writerType, $sheetIndex));
} elseif ($sheetExport instanceof FromQuery) {
$jobs = $jobs->merge($this->exportQuery($sheetExport, $temporaryFile, $writerType, $sheetIndex));
} elseif ($sheetExport instanceof FromView) {
$jobs = $jobs->merge($this->exportView($sheetExport, $temporaryFile, $writerType, $sheetIndex));
}
$jobs->push(new CloseSheet($sheetExport, $temporaryFile, $writerType, $sheetIndex));
}
return $jobs;
}
/**
* @param FromCollection $export
* @param TemporaryFile $temporaryFile
* @param string $writerType
* @param int $sheetIndex
*
* @return Collection
*/
private function exportCollection(
FromCollection $export,
TemporaryFile $temporaryFile,
string $writerType,
int $sheetIndex
): Collection {
return $export
->collection()
->chunk($this->getChunkSize($export))
->map(function ($rows) use ($writerType, $temporaryFile, $sheetIndex, $export) {
if ($rows instanceof Traversable) {
$rows = iterator_to_array($rows);
}
return new AppendDataToSheet(
$export,
$temporaryFile,
$writerType,
$sheetIndex,
$rows
);
});
}
/**
* @param FromQuery $export
* @param TemporaryFile $temporaryFile
* @param string $writerType
* @param int $sheetIndex
*
* @return Collection
*/
private function exportQuery(
FromQuery $export,
TemporaryFile $temporaryFile,
string $writerType,
int $sheetIndex
): Collection {
$query = $export->query();
$count = $export instanceof WithCustomQuerySize ? $export->querySize() : $query->count();
$spins = ceil($count / $this->getChunkSize($export));
$jobs = new Collection();
for ($page = 1; $page <= $spins; $page++) {
$jobs->push(new AppendQueryToSheet(
$export,
$temporaryFile,
$writerType,
$sheetIndex,
$page,
$this->getChunkSize($export)
));
}
return $jobs;
}
/**
* @param FromView $export
* @param TemporaryFile $temporaryFile
* @param string $writerType
* @param int $sheetIndex
*
* @return Collection
*/
private function exportView(
FromView $export,
TemporaryFile $temporaryFile,
string $writerType,
int $sheetIndex
): Collection {
$jobs = new Collection();
$jobs->push(new AppendViewToSheet(
$export,
$temporaryFile,
$writerType,
$sheetIndex
));
return $jobs;
}
/**
* @param object|WithCustomChunkSize $export
*
* @return int
*/
private function getChunkSize($export): int
{
if ($export instanceof WithCustomChunkSize) {
return $export->chunkSize();
}
return $this->chunkSize;
}
}