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[stable31] feat: file conversion provider #4408

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merged 3 commits into from
Jan 23, 2025
Merged

[stable31] feat: file conversion provider #4408

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ada6fbc
feat: register conversion provider
elzody Jan 7, 2025
d126494
chore: fix psalm errors
elzody Jan 21, 2025
2e26d4e
chore: update autoload files
elzody Jan 21, 2025
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1 change: 1 addition & 0 deletions composer/composer/autoload_classmap.php
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,7 @@
'OCA\\Richdocuments\\Controller\\TemplateFieldController' => $baseDir . '/../lib/Controller/TemplateFieldController.php',
'OCA\\Richdocuments\\Controller\\TemplatesController' => $baseDir . '/../lib/Controller/TemplatesController.php',
'OCA\\Richdocuments\\Controller\\WopiController' => $baseDir . '/../lib/Controller/WopiController.php',
'OCA\\Richdocuments\\Conversion\\ConversionProvider' => $baseDir . '/../lib/Conversion/ConversionProvider.php',
'OCA\\Richdocuments\\Db\\Asset' => $baseDir . '/../lib/Db/Asset.php',
'OCA\\Richdocuments\\Db\\AssetMapper' => $baseDir . '/../lib/Db/AssetMapper.php',
'OCA\\Richdocuments\\Db\\Direct' => $baseDir . '/../lib/Db/Direct.php',
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1 change: 1 addition & 0 deletions composer/composer/autoload_static.php
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Expand Up @@ -63,6 +63,7 @@ class ComposerStaticInitRichdocuments
'OCA\\Richdocuments\\Controller\\TemplateFieldController' => __DIR__ . '/..' . '/../lib/Controller/TemplateFieldController.php',
'OCA\\Richdocuments\\Controller\\TemplatesController' => __DIR__ . '/..' . '/../lib/Controller/TemplatesController.php',
'OCA\\Richdocuments\\Controller\\WopiController' => __DIR__ . '/..' . '/../lib/Controller/WopiController.php',
'OCA\\Richdocuments\\Conversion\\ConversionProvider' => __DIR__ . '/..' . '/../lib/Conversion/ConversionProvider.php',
'OCA\\Richdocuments\\Db\\Asset' => __DIR__ . '/..' . '/../lib/Db/Asset.php',
'OCA\\Richdocuments\\Db\\AssetMapper' => __DIR__ . '/..' . '/../lib/Db/AssetMapper.php',
'OCA\\Richdocuments\\Db\\Direct' => __DIR__ . '/..' . '/../lib/Db/Direct.php',
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2 changes: 2 additions & 0 deletions lib/AppInfo/Application.php
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Expand Up @@ -10,6 +10,7 @@

use OCA\Files_Sharing\Event\ShareLinkAccessedEvent;
use OCA\Richdocuments\Capabilities;
use OCA\Richdocuments\Conversion\ConversionProvider;
use OCA\Richdocuments\Db\WopiMapper;
use OCA\Richdocuments\Listener\AddContentSecurityPolicyListener;
use OCA\Richdocuments\Listener\AddFeaturePolicyListener;
Expand Down Expand Up @@ -81,6 +82,7 @@ public function register(IRegistrationContext $context): void {
$context->registerPreviewProvider(OOXML::class, OOXML::MIMETYPE_REGEX);
$context->registerPreviewProvider(OpenDocument::class, OpenDocument::MIMETYPE_REGEX);
$context->registerPreviewProvider(Pdf::class, Pdf::MIMETYPE_REGEX);
$context->registerFileConversionProvider(ConversionProvider::class);
$context->registerNotifierService(Notifier::class);
}

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242 changes: 242 additions & 0 deletions lib/Conversion/ConversionProvider.php
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Original file line number Diff line number Diff line change
@@ -0,0 +1,242 @@
<?php

declare(strict_types=1);

/**
* SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
* SPDX-License-Identifier: AGPL-3.0-or-later
*/

namespace OCA\Richdocuments\Conversion;

use OCA\Richdocuments\Service\RemoteService;
use OCP\Files\Conversion\ConversionMimeProvider;
use OCP\Files\Conversion\IConversionProvider;
use OCP\Files\File;
use OCP\IL10N;
use OCP\L10N\IFactory;
use Psr\Log\LoggerInterface;

class ConversionProvider implements IConversionProvider {
private IL10N $l10n;

private const MIME_TYPES = [
'documents' => [
'doc' => 'application/msword',
'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
'dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template',
'ott' => 'application/vnd.oasis.opendocument.text-template',
'odt' => 'application/vnd.oasis.opendocument.text',
],
'sheets' => [
'xls' => 'application/vnd.ms-excel',
'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
'xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.template',
'ods' => 'application/vnd.oasis.opendocument.spreadsheet',
'ots' => 'application/vnd.oasis.opendocument.spreadsheet-template',
],
'presentations' => [
'ppt' => 'application/vnd.ms-powerpoint',
'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
'potx' => 'application/vnd.openxmlformats-officedocument.presentationml.template',
'odp' => 'application/vnd.oasis.opendocument.presentation',
'otp' => 'application/vnd.oasis.opendocument.presentation-template',
],
'drawings' => [
'vsdx' => 'application/vnd.visio',
'odg' => 'application/vnd.oasis.opendocument.graphics',
'otg' => 'application/vnd.oasis.opendocument.graphics-template',
],
];

public function __construct(
private RemoteService $remoteService,
private LoggerInterface $logger,
IFactory $l10nFactory,
) {
$this->l10n = $l10nFactory->get('richdocuments');
}

public function getSupportedMimeTypes(): array {
$documents = self::MIME_TYPES['documents'];
$sheets = self::MIME_TYPES['sheets'];
$presentations = self::MIME_TYPES['presentations'];
$drawings = self::MIME_TYPES['drawings'];

$pdfConversions = array_merge(
[],
self::MIME_TYPES['documents'],
self::MIME_TYPES['sheets'],
self::MIME_TYPES['presentations'],
self::MIME_TYPES['drawings'],
);

$documentConversions = [
// OpenDocument Text to Word Document
'docx' => [$documents['odt']],

// Word Document to OpenDocument Text
'odt' => [$documents['doc'], $documents['docx']],

// Documents to Rich Text Format
'rtf' => [$documents['odt'], $documents['doc'], $documents['docx']],

// Documents to text
'txt' => [$documents['odt'], $documents['doc'], $documents['docx']],
];

$spreadsheetConversions = [
// OpenDocument Spreadsheet to Excel Workbook
'xlsx' => [$sheets['ods']],

// Excel Workbook to OpenDocument Spreadsheet
'ods' => [$sheets['xls'], $sheets['xlsx']],
];

$presentationConversions = [
// OpenDocument Presentation to PowerPoint Presentation
'pptx' => [$presentations['odp']],

// PowerPoint Presentation to OpenDocument Presentation
'odp' => [$presentations['ppt'], $presentations['pptx']],
];

$drawingConversions = [
// OpenDocument Drawing to Portable Network Graphics
'png' => [$drawings['odg']],

// OpenDocument Drawing to Scalable Vector Graphics
'svg' => [$drawings['odg']],
];

return [
// PDF conversions
...$this->getMimeProvidersFor($pdfConversions, 'application/pdf'),

// Document conversions
...$this->getMimeProvidersFor($documentConversions['docx'], $documents['docx']),
...$this->getMimeProvidersFor($documentConversions['odt'], $documents['odt']),
...$this->getMimeProvidersFor($documentConversions['rtf'], 'application/rtf'),
...$this->getMimeProvidersFor($documentConversions['txt'], 'text/plain'),

// Spreadsheet conversions
...$this->getMimeProvidersFor($spreadsheetConversions['xlsx'], $sheets['xlsx']),
...$this->getMimeProvidersFor($spreadsheetConversions['ods'], $sheets['ods']),

// Presentation conversions
...$this->getMimeProvidersFor($presentationConversions['pptx'], $presentations['pptx']),
...$this->getMimeProvidersFor($presentationConversions['odp'], $presentations['odp']),

// Drawing conversions
...$this->getMimeProvidersFor($drawingConversions['png'], 'image/png'),
...$this->getMimeProvidersFor($drawingConversions['svg'], 'image/svg+xml'),
];
}

public function convertFile(File $file, string $targetMimeType): mixed {
$targetFileExtension = $this->getExtensionForMimeType($targetMimeType);
if ($targetFileExtension === null) {
throw new \Exception($this->l10n->t(
'Unable to determine the proper file extension for %1$s',
[$targetMimeType]
));
}

return $this->remoteService->convertFileTo($file, $targetFileExtension);
}

private function getMimeProvidersFor(array $inputMimeTypes, string $outputMimeType): array {
$outputMimeInfo = $this->getMimeInfoFor($outputMimeType);
if ($outputMimeInfo === null) {
$this->logger->error($this->l10n->t('Unable to fetch information on $s', [$outputMimeType]));
throw new \Exception();
}

$conversionMimeProviders = [];
foreach ($inputMimeTypes as $mimeType) {
$conversionMimeProviders[] = new ConversionMimeProvider(
$mimeType,
...$outputMimeInfo
);
}

return $conversionMimeProviders;
}

private function getMimeInfoFor(string $targetMimeType): ?array {
foreach ($this->getTargetMimeTypes() as $mimeType => $mimeInfo) {
if ($mimeType === $targetMimeType) {
return [
'to' => $mimeType,
'extension' => $mimeInfo['extension'],
'displayName' => $mimeInfo['displayName'],
];
}
}

return null;
}

private function getTargetMimeTypes(): array {
$documents = self::MIME_TYPES['documents'];
$sheets = self::MIME_TYPES['sheets'];
$presentations = self::MIME_TYPES['presentations'];

return [
'application/pdf' => [
'extension' => 'pdf',
'displayName' => $this->l10n->t('Portable Document Format (.pdf)'),
],
'image/png' => [
'extension' => 'png',
'displayName' => $this->l10n->t('Image (.png)'),
],
'image/svg+xml' => [
'extension' => 'svg',
'displayName' => $this->l10n->t('Image (.svg)'),
],
'application/rtf' => [
'extension' => 'rtf',
'displayName' => $this->l10n->t('Text (.rtf)'),
],
'text/plain' => [
'extension' => 'txt',
'displayName' => $this->l10n->t('Text (.txt)'),
],
$documents['docx'] => [
'extension' => 'docx',
'displayName' => $this->l10n->t('Word Document (.docx)'),
],
$documents['odt'] => [
'extension' => 'odt',
'displayName' => $this->l10n->t('OpenDocument Text (.odt)'),
],
$sheets['xlsx'] => [
'extension' => 'xlsx',
'displayName' => $this->l10n->t('Excel Workbook (.xlsx)'),
],
$sheets['ods'] => [
'extension' => 'ods',
'displayName' => $this->l10n->t('OpenDocument Spreadsheet (.ods)'),
],
$presentations['pptx'] => [
'extension' => 'pptx',
'displayName' => $this->l10n->t('PowerPoint Presentation (.pptx)'),
],
$presentations['odp'] => [
'extension' => 'odp',
'displayName' => $this->l10n->t('OpenDocument Presentation (.odp)'),
],
];
}

private function getExtensionForMimeType(string $mimeType): ?string {
foreach ($this->getTargetMimeTypes() as $targetMimeType => $targetMimeInfo) {
if ($targetMimeType === $mimeType) {
return $targetMimeInfo['extension'];
}
}

return null;
}
}
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