feat: add checkbox field

packages/lib/server-only/field/sign-field-with-token.ts

@@ -188,10 +188,17 @@ export const signFieldWithToken = async ({
               type,
               data: signatureImageAsBase64 || typedSignature || '',
             }))
-            .with(FieldType.DATE, FieldType.EMAIL, FieldType.NAME, FieldType.TEXT, (type) => ({
-              type,
-              data: updatedField.customText,
-            }))
+            .with(
+              FieldType.DATE,
+              FieldType.EMAIL,
+              FieldType.NAME,
+              FieldType.TEXT,
+              FieldType.CHECKBOX,
+              (type) => ({
+                type,
+                data: updatedField.customText,
+              }),
+            )
             .exhaustive(),
           fieldSecurity: derivedRecipientActionAuth
             ? {

packages/lib/server-only/pdf/insert-field-in-pdf.ts

@@ -1,6 +1,7 @@
 // https://github.com/Hopding/pdf-lib/issues/20#issuecomment-412852821
 import fontkit from '@pdf-lib/fontkit';
-import { PDFDocument, StandardFonts } from 'pdf-lib';
+import type { PDFDocument } from 'pdf-lib';
+import { StandardFonts } from 'pdf-lib';
 
 import {
   DEFAULT_HANDWRITING_FONT_SIZE,
@@ -18,6 +19,7 @@ export const insertFieldInPDF = async (pdf: PDFDocument, field: FieldWithSignatu
   );
 
   const isSignatureField = isSignatureFieldType(field.type);
+  const isCheckboxField = field.type === FieldType.CHECKBOX;
 
   pdf.registerFontkit(fontkit);
 
@@ -73,6 +75,28 @@ export const insertFieldInPDF = async (pdf: PDFDocument, field: FieldWithSignatu
       width: imageWidth,
       height: imageHeight,
     });
+  } else if (isCheckboxField) {
+    const form = pdf.getForm();
+    const checkBox = form.createCheckBox(`checkBox.field.${field.id}`);
+
+    const textX = fieldX + fieldWidth / 2;
+    let textY = fieldY + fieldHeight / 2;
+
+    textY = pageHeight - textY;
+
+    checkBox.addToPage(page, {
+      x: textX,
+      y: textY,
+      width: 16,
+      height: 16,
+      borderWidth: 1,
+    });
+
+    if (field.customText === '✓') {
+      checkBox.check();
+    }
+
+    form.getField(`checkBox.field.${field.id}`).enableReadOnly();
   } else {
     const longestLineInTextForWidth = field.customText
       .split('\n')
@@ -102,14 +126,3 @@ export const insertFieldInPDF = async (pdf: PDFDocument, field: FieldWithSignatu
 
   return pdf;
 };
-
-export const insertFieldInPDFBytes = async (
-  pdf: ArrayBuffer | Uint8Array | string,
-  field: FieldWithSignature,
-) => {
-  const pdfDoc = await PDFDocument.load(pdf);
-
-  await insertFieldInPDF(pdfDoc, field);
-
-  return await pdfDoc.save();
-};

packages/lib/types/document-audit-logs.ts

@@ -231,6 +231,10 @@ export const ZDocumentAuditLogEventDocumentFieldInsertedSchema = z.object({
         type: z.literal(FieldType.TEXT),
         data: z.string(),
       }),
+      z.object({
+        type: z.literal(FieldType.CHECKBOX),
+        data: z.string(),
+      }),
       z.object({
         type: z.union([z.literal(FieldType.SIGNATURE), z.literal(FieldType.FREE_SIGNATURE)]),
         data: z.string(),