From 6f8dd91157374d54090177eef2a8baf0750b4123 Mon Sep 17 00:00:00 2001
From: neeraj <garg@adobe.com>
Date: Mon, 12 Feb 2024 12:16:36 +0530
Subject: [PATCH] form submit handler

---
 blocks/form/form.js   |  5 +++
 blocks/form/submit.js | 71 ++++++++++++++++++++++++++++++++++++++-----
 blocks/form/util.js   |  4 ---
 3 files changed, 69 insertions(+), 11 deletions(-)

diff --git a/blocks/form/form.js b/blocks/form/form.js
index 5cf15822..310661c1 100644
--- a/blocks/form/form.js
+++ b/blocks/form/form.js
@@ -9,6 +9,7 @@ import GoogleReCaptcha from './integrations/recaptcha.js';
 
 import fileDecorate from './file.js';
 import DocBaseFormToAF from './transform.js';
+import handleSubmit from './submit.js';
 
 export const DELAY_MS = 0;
 let captchaField;
@@ -352,6 +353,10 @@ export async function createForm(formDef, data) {
     }, DELAY_MS);
   }
 
+  form.addEventListener('submit', (event) => {
+    handleSubmit(event, form);
+  });
+
   return form;
 }
 
diff --git a/blocks/form/submit.js b/blocks/form/submit.js
index 9fc83ee5..a513491f 100644
--- a/blocks/form/submit.js
+++ b/blocks/form/submit.js
@@ -1,25 +1,25 @@
 import { checkValidation } from './util.js';
 
-export function submitSuccess(e, form) {
+function submitSuccess(e, form) {
   const { payload } = e;
-  if (payload.body.redirectUrl) {
+  if (payload?.body?.redirectUrl) {
     window.location.assign(encodeURI(payload.body.redirectUrl));
-  } else if (payload.body.thankYouMessage) {
+  } else {
     let thankYouMessage = form.querySelector('.form-message.success-message');
     if (!thankYouMessage) {
       thankYouMessage = document.createElement('div');
       thankYouMessage.className = 'form-message success-message';
     }
-    thankYouMessage.innerHTML = payload.body.thankYouMessage;
+    thankYouMessage.innerHTML = 'Thanks for your submission';
     form.prepend(thankYouMessage);
     if (thankYouMessage.scrollIntoView) {
       thankYouMessage.scrollIntoView({ behavior: 'smooth' });
     }
-    e.target.dispatch({ type: 'reset' });
+    form.reset();
   }
 }
 
-export function submitFailure(e, form) {
+function submitFailure(error, form) {
   let errorMessage = form.querySelector('.form-message.error-message');
   if (!errorMessage) {
     errorMessage = document.createElement('div');
@@ -32,10 +32,67 @@ export function submitFailure(e, form) {
   form.querySelector('button[type="submit"]').disabled = false;
 }
 
-export function handleSubmit(e, form) {
+function generateUnique() {
+  return new Date().valueOf() + Math.random();
+}
+
+function constructPayload(form) {
+  const payload = { __id__: generateUnique() };
+  [...form.elements].forEach((fe) => {
+    if (fe.name) {
+      if (fe.type === 'radio') {
+        if (fe.checked) payload[fe.name] = fe.value;
+      } else if (fe.type === 'checkbox') {
+        if (fe.checked) payload[fe.name] = payload[fe.name] ? `${payload[fe.name]},${fe.value}` : fe.value;
+      } else if (fe.type !== 'file') {
+        payload[fe.name] = fe.value;
+      }
+    }
+  });
+  return { payload };
+}
+
+async function prepareRequest(form) {
+  const { payload } = constructPayload(form);
+  const headers = {
+    'Content-Type': 'application/json',
+  };
+  const body = JSON.stringify({ data: payload });
+  const url = form.dataset.submit || form.dataset.action;
+  return { headers, body, url };
+}
+
+async function submitForm(form) {
+  try {
+    const { headers, body, url } = await prepareRequest(form);
+    const response = await fetch(url, {
+      method: 'POST',
+      headers,
+      body,
+    });
+    if (response.ok) {
+      submitSuccess(response, form);
+    } else {
+      const error = await response.text();
+      throw new Error(error);
+    }
+  } catch (error) {
+    submitFailure(error, form);
+  }
+}
+
+export default async function handleSubmit(e, form) {
+  e.preventDefault();
   const valid = form.checkValidity();
   if (valid) {
     e.submitter.setAttribute('disabled', '');
+    if (form.getAttribute('data-submitting') !== 'true') {
+      form.setAttribute('data-submitting', 'true');
+
+      // hide error message in case it was shown before
+      form.querySelectorAll('.form-message.show').forEach((el) => el.classList.remove('show'));
+      await submitForm(form);
+    }
   } else {
     const fields = form.querySelectorAll(':invalid:not(fieldset)');
     fields.forEach((field) => {
diff --git a/blocks/form/util.js b/blocks/form/util.js
index 956e8ad6..b872c7f5 100644
--- a/blocks/form/util.js
+++ b/blocks/form/util.js
@@ -195,7 +195,3 @@ export function checkValidation(fieldElement) {
     updateOrCreateInvalidMsg(fieldElement, '');
   }
 }
-
-export function isDocumentBasedForm(formDef) {
-  return formDef?.[':type'] === 'sheet' && formDef?.data;
-}