refactor: improve document access validation in DocumentSchema

- Enhanced authorization checks in DocumentSchema to ensure users must either be the document owner or a writable collaborator.
- Consolidated validation logic for better readability and maintainability, improving error handling for unauthorized access.

src/Document/document.schema.ts

@@ -294,11 +294,12 @@ export class DocumentSchema extends PothosSchema {
           })
           if (!document) throw new Error('Document not found')
           if (
-            !document.isPublic ||
-            !document.collaborators.some((c) => c.userId === ctx.http?.me?.id && c.writable) ||
+            !document.isPublic &&
+            !document.collaborators.some((c) => c.userId === ctx.http?.me?.id && c.writable) &&
             document.ownerId !== ctx.http?.me?.id
-          )
+          ) {
             throw new Error('User is not owner or collaborator of document')
+          }
           return await this.prisma.document.update({
             ...query,
             where: { id: args.documentId },