feat: force signature fields for document signers (#1139)

## Description

Show a dialog when the document has signers with no signature fields
placed.

## Changes Made

Created a new dialog that'll be triggered when the document owner tries
to send a document to the signers without placing signature fields. The
document owners can't proceed to the next step unless they add signature
fields.

## Checklist

- [x] I have tested these changes locally and they work as expected.
- [ ] I have added/updated tests that prove the effectiveness of these
changes.
- [ ] I have updated the documentation to reflect these changes, if
applicable.
- [x] I have followed the project's coding style guidelines.
- [ ] I have addressed the code review feedback from the previous
submission, if applicable.




https://github.com/documenso/documenso/assets/25515812/f1b5c34e-2ce0-40e3-804c-f05d23045710




<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

- **New Features**
- Introduced "Direct Links" for async signing, allowing users to create
documents from templates using public links.
- Added `MissingSignatureFieldDialog` component to ensure users don't
miss adding signature fields.

- **Enhancements**
- Updated blog content to provide guidance on contract management and
announce new pricing plans.

- **Bug Fixes**
  - Improved async signing process for better efficiency and control.

- **Refactor**
- Improved internal code structure and import order for stripe-related
functionality.

- **Tests**
- Enhanced e2e tests to verify signature presence before document
creation and updated test flows for document approval.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

---------

Co-authored-by: David Nguyen <davidngu28@gmail.com>

packages/lib/server-only/document/send-document.tsx

@@ -5,13 +5,7 @@ import type { RequestMetadata } from '@documenso/lib/universal/extract-request-m
 import { putPdfFile } from '@documenso/lib/universal/upload/put-file';
 import { createDocumentAuditLogData } from '@documenso/lib/utils/document-audit-logs';
 import { prisma } from '@documenso/prisma';
-import {
-  DocumentSource,
-  DocumentStatus,
-  RecipientRole,
-  SendStatus,
-  SigningStatus,
-} from '@documenso/prisma/client';
+import { DocumentStatus, RecipientRole, SendStatus, SigningStatus } from '@documenso/prisma/client';
 import { WebhookTriggerEvents } from '@documenso/prisma/client';
 
 import { jobsClient } from '../../jobs/client';
@@ -71,8 +65,6 @@ export const sendDocument = async ({
     },
   });
 
-  const customEmail = document?.documentMeta;
-
   if (!document) {
     throw new Error('Document not found');
   }
@@ -87,8 +79,6 @@ export const sendDocument = async ({
 
   const { documentData } = document;
 
-  const isDirectTemplate = document.source === DocumentSource.TEMPLATE_DIRECT_LINK;
-
   if (!documentData.data) {
     throw new Error('Document data not found');
   }
@@ -98,6 +88,7 @@ export const sendDocument = async ({
 
     const prefilled = await insertFormValuesInPdf({
       pdf: Buffer.from(file),
+      // eslint-disable-next-line @typescript-eslint/consistent-type-assertions
       formValues: document.formValues as Record<string, string | number | boolean>,
     });
 
@@ -119,6 +110,31 @@ export const sendDocument = async ({
     Object.assign(document, result);
   }
 
+  // Commented out server side checks for minimum 1 signature per signer now since we need to
+  // decide if we want to enforce this for API & templates.
+  // const fields = await getFieldsForDocument({
+  //   documentId: documentId,
+  //   userId: userId,
+  // });
+
+  // const fieldsWithSignerEmail = fields.map((field) => ({
+  //   ...field,
+  //   signerEmail:
+  //     document.Recipient.find((recipient) => recipient.id === field.recipientId)?.email ?? '',
+  // }));
+
+  // const everySignerHasSignature = document?.Recipient.every(
+  //   (recipient) =>
+  //     recipient.role !== RecipientRole.SIGNER ||
+  //     fieldsWithSignerEmail.some(
+  //       (field) => field.type === 'SIGNATURE' && field.signerEmail === recipient.email,
+  //     ),
+  // );
+
+  // if (!everySignerHasSignature) {
+  //   throw new Error('Some signers have not been assigned a signature field.');
+  // }
+
   if (sendEmail) {
     await Promise.all(
       document.Recipient.map(async (recipient) => {