feat(plugin-form-builder): pass beforeChange params into beforeEmail hook and add types to it (#7626)

Form Builder Plugin BeforeEmail hook now takes a generic for your
generated types and it has the full hook params available to it.

```ts
import type { BeforeEmail } from '@payloadcms/plugin-form-builder'
// Your generated FormSubmission type
import type {FormSubmission} from '@payload-types'

// Pass it through and 'data' or 'originalDoc' will now be typed
const beforeEmail: BeforeEmail<FormSubmission> = (emailsToSend, beforeChangeParams) => {
  // modify the emails in any way before they are sent
  return emails.map((email) => ({
    ...email,
    html: email.html, // transform the html in any way you'd like (maybe wrap it in an html template?)
  }))
}
```

docs/plugins/form-builder.mdx

@@ -109,7 +109,7 @@ The `beforeEmail` property is a [beforeChange](<[beforeChange](https://payloadcm
 // payload.config.ts
 formBuilder({
   // ...
-  beforeEmail: (emailsToSend) => {
+  beforeEmail: (emailsToSend, beforeChangeParams) => {
     // modify the emails in any way before they are sent
     return emails.map((email) => ({
       ...email,
@@ -119,6 +119,23 @@ formBuilder({
 })
 ```
 
+For full types with `beforeChangeParams`, you can import the types from the plugin:
+
+```ts
+import type { BeforeEmail } from '@payloadcms/plugin-form-builder'
+// Your generated FormSubmission type
+import type {FormSubmission} from '@payload-types'
+
+// Pass it through and 'data' or 'originalDoc' will now be typed
+const beforeEmail: BeforeEmail<FormSubmission> = (emailsToSend, beforeChangeParams) => {
+  // modify the emails in any way before they are sent
+  return emails.map((email) => ({
+    ...email,
+    html: email.html, // transform the html in any way you'd like (maybe wrap it in an html template?)
+  }))
+}
+```
+
 ### `formOverrides`
 
 Override anything on the `forms` collection by sending a [Payload Collection Config](https://payloadcms.com/docs/configuration/collections) to the `formOverrides` property.

packages/plugin-form-builder/src/collections/FormSubmissions/hooks/sendEmail.ts

@@ -1,20 +1,24 @@
+import type { CollectionBeforeChangeHook } from 'payload'
+
 import type { Email, FormBuilderPluginConfig, FormattedEmail } from '../../../types.js'
 
 import { serializeLexical } from '../../../utilities/lexical/serializeLexical.js'
 import { replaceDoubleCurlys } from '../../../utilities/replaceDoubleCurlys.js'
 import { serializeSlate } from '../../../utilities/slate/serializeSlate.js'
 
+type BeforeChangeParams = Parameters<CollectionBeforeChangeHook>[0]
+
 export const sendEmail = async (
-  beforeChangeData: any,
+  beforeChangeParameters: BeforeChangeParams,
   formConfig: FormBuilderPluginConfig,
-): Promise<any> => {
+): Promise<BeforeChangeParams['data']> => {
-  const { data, operation, req } = beforeChangeData
+  const { data, operation, req } = beforeChangeParameters
 
   if (operation === 'create') {
     const {
       data: { id: formSubmissionID },
       req: { locale, payload },
-    } = beforeChangeData
+    } = beforeChangeParameters
 
     const { form: formID, submissionData } = data || {}
 
@@ -28,7 +32,7 @@ export const sendEmail = async (
         req,
       })
 
-      const { emails } = form
+      const emails = form.emails as Email[]
 
       if (emails && emails.length) {
         const formattedEmails: FormattedEmail[] = await Promise.all(
@@ -70,11 +74,9 @@ export const sendEmail = async (
         let emailsToSend = formattedEmails
 
         if (typeof beforeEmail === 'function') {
-          emailsToSend = await beforeEmail(formattedEmails)
+          emailsToSend = await beforeEmail(formattedEmails, beforeChangeParameters)
         }
 
-        // const log = emailsToSend.map(({ html, ...rest }) => ({ ...rest }))
-
         await Promise.all(
           emailsToSend.map(async (email) => {
             const { to } = email

packages/plugin-form-builder/src/types.ts

@@ -1,4 +1,10 @@
-import type { Block, CollectionConfig, Field } from 'payload'
+import type {
+  Block,
+  CollectionBeforeChangeHook,
+  CollectionConfig,
+  Field,
+  TypeWithID,
+} from 'payload'
 
 export interface BlockConfig {
   block: Block
@@ -37,7 +43,11 @@ export interface FieldsConfig {
   textarea?: FieldConfig | boolean
 }
 
-export type BeforeEmail = (emails: FormattedEmail[]) => FormattedEmail[] | Promise<FormattedEmail[]>
+type BeforeChangeParams<T extends TypeWithID = any> = Parameters<CollectionBeforeChangeHook<T>>[0]
+export type BeforeEmail<T extends TypeWithID = any> = (
+  emails: FormattedEmail[],
+  beforeChangeParams: BeforeChangeParams<T>,
+) => FormattedEmail[] | Promise<FormattedEmail[]>
 export type HandlePayment = (data: any) => void
 export type FieldsOverride = (args: { defaultFields: Field[] }) => Field[]
 

test/plugin-form-builder/config.ts

@@ -2,11 +2,14 @@ import { fileURLToPath } from 'node:url'
 import path from 'path'
 const filename = fileURLToPath(import.meta.url)
 const dirname = path.dirname(filename)
+import type { BeforeEmail } from '@payloadcms/plugin-form-builder/types'
 import type { Block } from 'payload'
 
 import { formBuilderPlugin, fields as formFields } from '@payloadcms/plugin-form-builder'
 import { slateEditor } from '@payloadcms/richtext-slate'
 
+import type { FormSubmission } from './payload-types.js'
+
 import { buildConfigWithDefaults } from '../buildConfigWithDefaults.js'
 import { devUser } from '../credentials.js'
 import { Pages } from './collections/Pages.js'
@@ -27,6 +30,10 @@ const colorField: Block = {
   },
 }
 
+const beforeEmail: BeforeEmail<FormSubmission> = (emails, { req: { payload }, originalDoc }) => {
+  return emails
+}
+
 export default buildConfigWithDefaults({
   collections: [Pages, Users],
   editor: slateEditor({}),
@@ -49,7 +56,6 @@ export default buildConfigWithDefaults({
   plugins: [
     formBuilderPlugin({
       // handlePayment: handleFormPayments,
-      // beforeEmail: prepareFormEmails,
       fields: {
         colorField,
         payment: true,
@@ -72,6 +78,7 @@ export default buildConfigWithDefaults({
         //     },
         // },
       },
+      beforeEmail,
       formOverrides: {
         // labels: {
         //   singular: 'Contact Form',