feat: universal upload

Implementation of a universal upload allowing for multiple storage backends
starting with `database` and `s3`.

Allows clients to put and retrieve files from either client or server using
a blend of client and server actions.

apps/web/src/app/(signing)/sign/[token]/complete/download-button.tsx

@@ -1,55 +1,55 @@
 'use client';
 
-import { HTMLAttributes } from 'react';
+import { HTMLAttributes, useState } from 'react';
 
 import { Download } from 'lucide-react';
 
+import { getFile } from '@documenso/lib/universal/upload/get-file';
+import { DocumentData } from '@documenso/prisma/client';
 import { Button } from '@documenso/ui/primitives/button';
 
 export type DownloadButtonProps = HTMLAttributes<HTMLButtonElement> & {
   disabled?: boolean;
   fileName?: string;
-  document?: string;
+  documentData?: DocumentData;
 };
 
 export const DownloadButton = ({
   className,
   fileName,
-  document,
+  documentData,
   disabled,
   ...props
 }: DownloadButtonProps) => {
-  /**
-   * Convert the document from base64 to a blob and download it.
-   */
-  const onDownloadClick = () => {
-    if (!document) {
-      return;
-    }
-
-    let decodedDocument = document;
+  const [isLoading, setIsLoading] = useState(false);
 
+  const onDownloadClick = async () => {
     try {
-      decodedDocument = atob(document);
+      setIsLoading(true);
+
+      if (!documentData) {
+        return;
+      }
+
+      const bytes = await getFile(documentData);
+
+      const blob = new Blob([bytes], {
+        type: 'application/pdf',
+      });
+
+      const link = window.document.createElement('a');
+
+      link.href = window.URL.createObjectURL(blob);
+      link.download = fileName || 'document.pdf';
+
+      link.click();
+
+      window.URL.revokeObjectURL(link.href);
     } catch (err) {
-      // We're just going to ignore this error and try to download the document
       console.error(err);
+    } finally {
+      setIsLoading(false);
     }
-
-    const documentBytes = Uint8Array.from(decodedDocument.split('').map((c) => c.charCodeAt(0)));
-
-    const blob = new Blob([documentBytes], {
-      type: 'application/pdf',
-    });
-
-    const link = window.document.createElement('a');
-
-    link.href = window.URL.createObjectURL(blob);
-    link.download = fileName || 'document.pdf';
-
-    link.click();
-
-    window.URL.revokeObjectURL(link.href);
   };
 
   return (
@@ -57,8 +57,9 @@ export const DownloadButton = ({
       type="button"
       variant="outline"
       className={className}
-      disabled={disabled || !document}
+      disabled={disabled || !documentData}
       onClick={onDownloadClick}
+      loading={isLoading}
       {...props}
     >
       <Download className="mr-2 h-5 w-5" />

apps/web/src/app/(signing)/sign/[token]/complete/page.tsx

@@ -38,9 +38,13 @@ export default async function CompletedSigningPage({
 
   const [fields, recipient] = await Promise.all([
     getFieldsForToken({ token }),
-    getRecipientByToken({ token }),
+    getRecipientByToken({ token }).catch(() => null),
   ]);
 
+  if (!recipient) {
+    return notFound();
+  }
+
   const recipientName =
     recipient.name ||
     fields.find((field) => field.type === FieldType.NAME)?.customText ||
@@ -93,7 +97,7 @@ export default async function CompletedSigningPage({
         <DownloadButton
           className="flex-1"
           fileName={document.title}
-          document={document.status === DocumentStatus.COMPLETED ? documentData.data : undefined}
+          documentData={documentData}
           disabled={document.status !== DocumentStatus.COMPLETED}
         />
       </div>

apps/web/src/app/(signing)/sign/[token]/page.tsx

@@ -8,6 +8,7 @@ import { getDocumentAndSenderByToken } from '@documenso/lib/server-only/document
 import { viewedDocument } from '@documenso/lib/server-only/document/viewed-document';
 import { getFieldsForToken } from '@documenso/lib/server-only/field/get-fields-for-token';
 import { getRecipientByToken } from '@documenso/lib/server-only/recipient/get-recipient-by-token';
+import { getFile } from '@documenso/lib/universal/upload/get-file';
 import { FieldType } from '@documenso/prisma/client';
 import { Card, CardContent } from '@documenso/ui/primitives/card';
 import { ElementVisible } from '@documenso/ui/primitives/element-visible';
@@ -36,19 +37,21 @@ export default async function SigningPage({ params: { token } }: SigningPageProp
       token,
     }).catch(() => null),
     getFieldsForToken({ token }),
-    getRecipientByToken({ token }),
+    getRecipientByToken({ token }).catch(() => null),
     viewedDocument({ token }),
   ]);
 
-  if (!document || !document.documentData) {
+  if (!document || !document.documentData || !recipient) {
     return notFound();
   }
 
   const { documentData } = document;
 
-  const user = await getServerComponentSession();
+  const documentDataUrl = await getFile(documentData)
+    .then((buffer) => Buffer.from(buffer).toString('base64'))
+    .then((data) => `data:application/pdf;base64,${data}`);
 
-  const documentUrl = `data:application/pdf;base64,${documentData.data}`;
+  const user = await getServerComponentSession();
 
   return (
     <SigningProvider email={recipient.email} fullName={recipient.name} signature={user?.signature}>
@@ -69,7 +72,7 @@ export default async function SigningPage({ params: { token } }: SigningPageProp
             gradient
           >
             <CardContent className="p-2">
-              <LazyPDFViewer document={documentUrl} />
+              <LazyPDFViewer document={documentDataUrl} />
             </CardContent>
           </Card>