baptisteArno · baptisteArno · Dec 20, 2022 · Dec 14, 2022 · Dec 20, 2022
diff --git a/apps/builder/src/features/settings/components/MetadataForm.tsx b/apps/builder/src/features/settings/components/MetadataForm.tsx
@@ -36,6 +36,8 @@ export const MetadataForm = ({
     onMetadataChange({ ...metadata, favIconUrl })
   const handleImageSubmit = (imageUrl: string) =>
     onMetadataChange({ ...metadata, imageUrl })
+  const handleGoogleTagManagerIdChange = (googleTagManagerId: string) =>
+    onMetadataChange({ ...metadata, googleTagManagerId })
   const handleHeadCodeChange = (customHeadCode: string) =>
     onMetadataChange({ ...metadata, customHeadCode })
 
@@ -92,26 +94,23 @@ export const MetadataForm = ({
           </PopoverContent>
         </Popover>
       </Stack>
-      <Stack>
-        <FormLabel mb="0" htmlFor="title">
-          Title:
-        </FormLabel>
-        <Input
-          id="title"
-          defaultValue={metadata.title ?? typebotName}
-          onChange={handleTitleChange}
-        />
-      </Stack>
-      <Stack>
-        <FormLabel mb="0" htmlFor="description">
-          Description:
-        </FormLabel>
-        <Textarea
-          id="description"
-          defaultValue={metadata.description}
-          onChange={handleDescriptionChange}
-        />
-      </Stack>
+      <Input
+        label="Title:"
+        defaultValue={metadata.title ?? typebotName}
+        onChange={handleTitleChange}
+      />
+      <Textarea
+        defaultValue={metadata.description}
+        onChange={handleDescriptionChange}
+        label="Description:"
+      />
+      <Input
+        defaultValue={metadata.googleTagManagerId}
+        placeholder="GTM-XXXXXX"
+        onChange={handleGoogleTagManagerIdChange}
+        label="Google Tag Manager ID:"
+        moreInfoTooltip="Do not include it if you are embedding your typebot in an existing website. GTM should be installed in the parent website instead."
+      />
       <Stack>
         <HStack as={FormLabel} mb="0" htmlFor="head">
           <Text>Custom head code:</Text>

diff --git a/apps/builder/src/features/settings/settings.spec.ts b/apps/builder/src/features/settings/settings.spec.ts
@@ -101,13 +101,10 @@ test.describe.parallel('Settings page', () => {
       await page.fill('input[placeholder="Paste the image link..."]', imageUrl)
       await expect(websiteImg).toHaveAttribute('src', imageUrl)
 
-      // Title
-      await page.fill('input#title', 'Awesome typebot')
-
-      // Description
-      await page.fill('textarea#description', 'Lorem ipsum')
-
-      // Custom head code
+      await page.getByRole('textbox', { name: 'Title' }).fill('Awesome typebot')
+      await page
+        .getByRole('textbox', { name: 'Description' })
+        .fill('Lorem ipsum')
       await page.fill(
         'div[contenteditable=true]',
         '<script>Lorem ipsum</script>'

diff --git a/apps/docs/docs/editor/settings.mdx b/apps/docs/docs/editor/settings.mdx
@@ -38,3 +38,9 @@ You can tweak `3000` (3s) to your liking.
 In the Metadata section, you can customize how the preview card will look if you share your bot URL on social media for example.
 
 You can also add some custom head code to add third-party scripts like a Facebook pixel for example.
+
+### Google Tag Manager
+
+Allows you to easily add a GTM container to your bot. To find your GTM container ID, go to your GTM dashboard and click on the container you want to use. The ID is displayed in the top right corner.
+
+Note that you should not include it if you are embedding your typebot in an existing website. GTM should be installed in the parent website instead.
diff --git a/apps/viewer/src/components/Seo.tsx b/apps/viewer/src/components/Seo.tsx
@@ -1,6 +1,9 @@
+import { gtmHeadSnippet } from '@/lib/google-tag-manager'
 import { Metadata } from 'models'
 import Head from 'next/head'
+import Script from 'next/script'
 import React from 'react'
+import { isNotEmpty } from 'utils'
 
 type SEOProps = {
   url: string
@@ -11,55 +14,62 @@ type SEOProps = {
 export const SEO = ({
   url,
   typebotName,
-  metadata: { title, description, favIconUrl, imageUrl },
+  metadata: { title, description, favIconUrl, imageUrl, googleTagManagerId },
 }: SEOProps) => (
-  <Head>
-    <title>{title ?? typebotName}</title>
-    <meta name="robots" content="noindex" />
-    <link
-      rel="icon"
-      type="image/png"
-      href={favIconUrl ?? 'https://bot.typebot.io/favicon.png'}
-    />
-    <meta name="title" content={title ?? typebotName} />
-    <meta
-      name="description"
-      content={
-        description ??
-        'Build beautiful conversational forms and embed them directly in your applications without a line of code. Triple your response rate and collect answers that has more value compared to a traditional form.'
-      }
-    />
+  <>
+    <Head key="seo">
+      <title>{title ?? typebotName}</title>
+      <meta name="robots" content="noindex" />
+      <link
+        rel="icon"
+        type="image/png"
+        href={favIconUrl ?? 'https://bot.typebot.io/favicon.png'}
+      />
+      <meta name="title" content={title ?? typebotName} />
+      <meta
+        name="description"
+        content={
+          description ??
+          'Build beautiful conversational forms and embed them directly in your applications without a line of code. Triple your response rate and collect answers that has more value compared to a traditional form.'
+        }
+      />
 
-    <meta property="og:type" content="website" />
-    <meta property="og:url" content={url ?? 'https://bot.typebot.io'} />
-    <meta property="og:title" content={title ?? typebotName} />
-    <meta property="og:site_name" content={title ?? typebotName} />
-    <meta
-      property="og:description"
-      content={
-        description ??
-        'Build beautiful conversational forms and embed them directly in your applications without a line of code. Triple your response rate and collect answers that has more value compared to a traditional form.'
-      }
-    />
-    <meta
-      property="og:image"
-      itemProp="image"
-      content={imageUrl ?? 'https://bot.typebot.io/site-preview.png'}
-    />
+      <meta property="og:type" content="website" />
+      <meta property="og:url" content={url ?? 'https://bot.typebot.io'} />
+      <meta property="og:title" content={title ?? typebotName} />
+      <meta property="og:site_name" content={title ?? typebotName} />
+      <meta
+        property="og:description"
+        content={
+          description ??
+          'Build beautiful conversational forms and embed them directly in your applications without a line of code. Triple your response rate and collect answers that has more value compared to a traditional form.'
+        }
+      />
+      <meta
+        property="og:image"
+        itemProp="image"
+        content={imageUrl ?? 'https://bot.typebot.io/site-preview.png'}
+      />
 
-    <meta property="twitter:card" content="summary_large_image" />
-    <meta property="twitter:url" content={url ?? 'https://bot.typebot.io'} />
-    <meta property="twitter:title" content={title ?? typebotName} />
-    <meta
-      property="twitter:description"
-      content={
-        description ??
-        'Build beautiful conversational forms and embed them directly in your applications without a line of code. Triple your response rate and collect answers that has more value compared to a traditional form.'
-      }
-    />
-    <meta
-      property="twitter:image"
-      content={imageUrl ?? 'https://bot.typebot.io/site-preview.png'}
-    />
-  </Head>
+      <meta property="twitter:card" content="summary_large_image" />
+      <meta property="twitter:url" content={url ?? 'https://bot.typebot.io'} />
+      <meta property="twitter:title" content={title ?? typebotName} />
+      <meta
+        property="twitter:description"
+        content={
+          description ??
+          'Build beautiful conversational forms and embed them directly in your applications without a line of code. Triple your response rate and collect answers that has more value compared to a traditional form.'
+        }
+      />
+      <meta
+        property="twitter:image"
+        content={imageUrl ?? 'https://bot.typebot.io/site-preview.png'}
+      />
+    </Head>
+    {isNotEmpty(googleTagManagerId) && (
+      <Script id="google-tag-manager">
+        {gtmHeadSnippet(googleTagManagerId)}
+      </Script>
+    )}
+  </>
 )
diff --git a/apps/viewer/src/components/TypebotPage.tsx b/apps/viewer/src/components/TypebotPage.tsx
@@ -2,11 +2,12 @@ import { TypebotViewer } from 'bot-engine'
 import { AnswerInput, PublicTypebot, Typebot, VariableWithValue } from 'models'
 import { useRouter } from 'next/router'
 import React, { useEffect, useState } from 'react'
-import { isDefined, isNotDefined } from 'utils'
+import { isDefined, isNotDefined, isNotEmpty } from 'utils'
 import { SEO } from './Seo'
 import { ErrorPage } from './ErrorPage'
 import { createResultQuery, updateResultQuery } from '@/features/results'
 import { upsertAnswerQuery } from '@/features/answers'
+import { gtmBodyElement } from '@/lib/google-tag-manager'
 
 export type TypebotPageProps = {
   publishedTypebot: Omit<PublicTypebot, 'createdAt' | 'updatedAt'> & {
@@ -51,6 +52,8 @@ export const TypebotPage = ({
     initializeResult().then()
     if (isDefined(customHeadCode))
       document.head.innerHTML = document.head.innerHTML + customHeadCode
+    const gtmId = publishedTypebot.settings.metadata.googleTagManagerId
+    if (isNotEmpty(gtmId)) document.body.prepend(gtmBodyElement(gtmId))
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [])
 

diff --git a/apps/viewer/src/features/settings/settings.spec.ts b/apps/viewer/src/features/settings/settings.spec.ts
@@ -125,12 +125,14 @@ test('Show close message', async ({ page }) => {
 
 test('Should correctly parse metadata', async ({ page }) => {
   const typebotId = cuid()
+  const googleTagManagerId = 'GTM-M72NXKB'
   const customMetadata: Metadata = {
     description: 'My custom description',
     title: 'Custom title',
     favIconUrl: 'https://www.baptistearno.com/favicon.png',
     imageUrl: 'https://www.baptistearno.com/images/site-preview.png',
     customHeadCode: '<meta name="author" content="John Doe">',
+    googleTagManagerId,
   }
   await createTypebots([
     {
@@ -146,6 +148,11 @@ test('Should correctly parse metadata', async ({ page }) => {
     },
   ])
   await page.goto(`/${typebotId}-public`)
+  await expect(
+    typebotViewer(page).locator(
+      `input[placeholder="${defaultTextInputOptions.labels.placeholder}"]`
+    )
+  ).toBeVisible()
   expect(
     await page.evaluate(`document.querySelector('title').textContent`)
   ).toBe(customMetadata.title)
@@ -177,9 +184,12 @@ test('Should correctly parse metadata', async ({ page }) => {
           .content
     )
   ).toBe('John Doe')
-  await expect(
-    typebotViewer(page).locator(
-      `input[placeholder="${defaultTextInputOptions.labels.placeholder}"]`
+  expect(
+    await page.evaluate(
+      (googleTagManagerId) =>
+        document.querySelector(
+          `iframe[src="https://www.googletagmanager.com/ns.html?id=${googleTagManagerId}"]`
+        ) as HTMLMetaElement
     )
-  ).toBeVisible()
+  ).toBeDefined()
 })
diff --git a/apps/viewer/src/lib/google-tag-manager.ts b/apps/viewer/src/lib/google-tag-manager.ts
@@ -0,0 +1,23 @@
+export const gtmHeadSnippet = (
+  googleTagManagerId: string
+) => `<!-- Google Tag Manager -->
+(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
+new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
+j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
+'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
+})(window,document,'script','dataLayer','${googleTagManagerId}');
+<!-- End Google Tag Manager -->`
+
+export const gtmBodyElement = (googleTagManagerId: string) => {
+  if (document.getElementById('gtm-noscript')) return ''
+  const noScriptElement = document.createElement('noscript')
+  noScriptElement.id = 'gtm-noscript'
+  const iframeElement = document.createElement('iframe')
+  iframeElement.src = `https://www.googletagmanager.com/ns.html?id=${googleTagManagerId}`
+  iframeElement.height = '0'
+  iframeElement.width = '0'
+  iframeElement.style.display = 'none'
+  iframeElement.style.visibility = 'hidden'
+  noScriptElement.appendChild(iframeElement)
+  return noScriptElement
+}
diff --git a/packages/models/src/features/typebot/settings.ts b/packages/models/src/features/typebot/settings.ts
@@ -21,6 +21,7 @@ const metadataSchema = z.object({
   imageUrl: z.string().optional(),
   favIconUrl: z.string().optional(),
   customHeadCode: z.string().optional(),
+  googleTagManagerId: z.string().optional(),
 })
 
 export const settingsSchema = z.object({