+<?php
+
+namespace BookStack\Http\Controllers\Api;
+
+use BookStack\Entities\Models\Page;
+use BookStack\Exceptions\FileUploadException;
+use BookStack\Uploads\Attachment;
+use BookStack\Uploads\AttachmentService;
+use Exception;
+use Illuminate\Contracts\Filesystem\FileNotFoundException;
+use Illuminate\Http\Request;
+use Illuminate\Validation\ValidationException;
+
+class AttachmentApiController extends ApiController
+{
+ protected $attachmentService;
+
+ protected $rules = [
+ 'create' => [
+ 'name' => 'required|min:1|max:255|string',
+ 'uploaded_to' => 'required|integer|exists:pages,id',
+ 'file' => 'required_without:link|file',
+ 'link' => 'required_without:file|min:1|max:255|safe_url'
+ ],
+ 'update' => [
+ 'name' => 'min:1|max:255|string',
+ 'uploaded_to' => 'integer|exists:pages,id',
+ 'file' => 'link|file',
+ 'link' => 'file|min:1|max:255|safe_url'
+ ],
+ ];
+
+ public function __construct(AttachmentService $attachmentService)
+ {
+ $this->attachmentService = $attachmentService;
+ }
+
+ /**
+ * Get a listing of attachments visible to the user.
+ * The external property indicates whether the attachment is simple a link.
+ * A false value for the external property would indicate a file upload.
+ */
+ public function list()
+ {
+ return $this->apiListingResponse(Attachment::visible(), [
+ 'id', 'name', 'extension', 'uploaded_to', 'external', 'order', 'created_at', 'updated_at', 'created_by', 'updated_by',
+ ]);
+ }
+
+ /**
+ * Create a new attachment in the system.
+ * An uploaded_to value must be provided containing an ID of the page
+ * that this upload will be related to.
+ *
+ * @throws ValidationException
+ * @throws FileUploadException
+ */
+ public function create(Request $request)
+ {
+ $this->checkPermission('attachment-create-all');
+ $requestData = $this->validate($request, $this->rules['create']);
+
+ $pageId = $request->get('uploaded_to');
+ $page = Page::visible()->findOrFail($pageId);
+ $this->checkOwnablePermission('page-update', $page);
+
+ if ($request->hasFile('file')) {
+ $uploadedFile = $request->file('file');
+ $attachment = $this->attachmentService->saveNewUpload($uploadedFile, $page->id);
+ } else {
+ $attachment = $this->attachmentService->saveNewFromLink(
+ $requestData['name'], $requestData['link'], $page->id
+ );
+ }
+
+ $this->attachmentService->updateFile($attachment, $requestData);
+ return response()->json($attachment);
+ }
+
+ /**
+ * Get the details & content of a single attachment of the given ID.
+ * The attachment link or file content is provided via a 'content' property.
+ * For files the content will be base64 encoded.
+ *
+ * @throws FileNotFoundException
+ */
+ public function read(string $id)
+ {
+ /** @var Attachment $attachment */
+ $attachment = Attachment::visible()->findOrFail($id);
+
+ $attachment->setAttribute('links', [
+ 'html' => $attachment->htmlLink(),
+ 'markdown' => $attachment->markdownLink(),
+ ]);
+
+ if (!$attachment->external) {
+ $attachmentContents = $this->attachmentService->getAttachmentFromStorage($attachment);
+ $attachment->setAttribute('content', base64_encode($attachmentContents));
+ } else {
+ $attachment->setAttribute('content', $attachment->path);
+ }
+
+ return response()->json($attachment);
+ }
+
+ /**
+ * Update the details of a single attachment.
+ *
+ * @throws ValidationException
+ * @throws FileUploadException
+ */
+ public function update(Request $request, string $id)
+ {
+ $requestData = $this->validate($request, $this->rules['update']);
+ /** @var Attachment $attachment */
+ $attachment = Attachment::visible()->findOrFail($id);
+
+ $page = $attachment->page;
+ if ($requestData['uploaded_to'] ?? false) {
+ $pageId = $request->get('uploaded_to');
+ $page = Page::visible()->findOrFail($pageId);
+ $attachment->uploaded_to = $requestData['uploaded_to'];
+ }
+
+ $this->checkOwnablePermission('page-view', $page);
+ $this->checkOwnablePermission('page-update', $page);
+ $this->checkOwnablePermission('attachment-update', $attachment);
+
+ if ($request->hasFile('file')) {
+ $uploadedFile = $request->file('file');
+ $attachment = $this->attachmentService->saveUpdatedUpload($uploadedFile, $page->id);
+ }
+
+ $this->attachmentService->updateFile($attachment, $requestData);
+ return response()->json($attachment);
+ }
+
+ /**
+ * Delete an attachment of the given ID.
+ *
+ * @throws Exception
+ */
+ public function delete(string $id)
+ {
+ /** @var Attachment $attachment */
+ $attachment = Attachment::visible()->findOrFail($id);
+ $this->checkOwnablePermission('attachment-delete', $attachment);
+
+ $this->attachmentService->deleteFile($attachment);
+
+ return response('', 204);
+ }
+
+}