feat: use server-actions for authoring flow

This change actually makes the authoring flow work for
the most part by tying in emailing and more.

We have also done a number of quality of life updates to
simplify the codebase overall making it easier to continue
work on the refresh.

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

@@ -0,0 +1,94 @@
+import { createElement } from 'react';
+
+import { mailer } from '@documenso/email/mailer';
+import { render } from '@documenso/email/render';
+import { DocumentInviteEmailTemplate } from '@documenso/email/templates/document-invite';
+import { prisma } from '@documenso/prisma';
+import { DocumentStatus, SendStatus } from '@documenso/prisma/client';
+
+export interface SendDocumentOptions {
+  documentId: number;
+  userId: number;
+}
+
+export const sendDocument = async ({ documentId, userId }: SendDocumentOptions) => {
+  const user = await prisma.user.findFirstOrThrow({
+    where: {
+      id: userId,
+    },
+  });
+
+  const document = await prisma.document.findUnique({
+    where: {
+      id: documentId,
+      userId,
+    },
+    include: {
+      Recipient: true,
+    },
+  });
+
+  if (!document) {
+    throw new Error('Document not found');
+  }
+
+  if (document.Recipient.length === 0) {
+    throw new Error('Document has no recipients');
+  }
+
+  if (document.status === DocumentStatus.COMPLETED) {
+    throw new Error('Can not send completed document');
+  }
+
+  await Promise.all([
+    document.Recipient.map(async (recipient) => {
+      const { email, name } = recipient;
+
+      if (recipient.sendStatus === SendStatus.SENT) {
+        return;
+      }
+
+      const template = createElement(DocumentInviteEmailTemplate, {
+        documentName: document.title,
+        assetBaseUrl: process.env.NEXT_PUBLIC_SITE_URL || 'http://localhost:3000',
+        inviterName: user.name || undefined,
+        inviterEmail: user.email,
+        signDocumentLink: 'https://example.com',
+      });
+
+      mailer.sendMail({
+        to: {
+          address: email,
+          name,
+        },
+        from: {
+          name: process.env.NEXT_PRIVATE_SMTP_FROM_NAME || 'Documenso',
+          address: process.env.NEXT_PRIVATE_SMTP_FROM_ADDRESS || 'noreply@documenso.com',
+        },
+        subject: 'Please sign this document',
+        html: render(template),
+        text: render(template, { plainText: true }),
+      });
+
+      await prisma.recipient.update({
+        where: {
+          id: recipient.id,
+        },
+        data: {
+          sendStatus: SendStatus.SENT,
+        },
+      });
+    }),
+  ]);
+
+  const updatedDocument = await prisma.document.update({
+    where: {
+      id: documentId,
+    },
+    data: {
+      status: DocumentStatus.PENDING,
+    },
+  });
+
+  return updatedDocument;
+};