From 5715e42561be6cdc922820d6dfaeaefa8d63c17c Mon Sep 17 00:00:00 2001
From: Catalin <catalinflorentinion@gmail.com>
Date: Mon, 12 Feb 2024 16:17:02 +0200
Subject: [PATCH] HDX-9420 display alert if user tries to go back to page b

---
 .../fanstatic/onboarding/prevent-back-button.js      | 12 ++++++++++++
 .../ckanext/hdx_theme/fanstatic/webassets.yml        |  6 ++++++
 .../templates/onboarding/signup/verify-email.html    |  5 +++++
 3 files changed, 23 insertions(+)
 create mode 100644 ckanext-hdx_theme/ckanext/hdx_theme/fanstatic/onboarding/prevent-back-button.js

diff --git a/ckanext-hdx_theme/ckanext/hdx_theme/fanstatic/onboarding/prevent-back-button.js b/ckanext-hdx_theme/ckanext/hdx_theme/fanstatic/onboarding/prevent-back-button.js
new file mode 100644
index 0000000000..52715b739d
--- /dev/null
+++ b/ckanext-hdx_theme/ckanext/hdx_theme/fanstatic/onboarding/prevent-back-button.js
@@ -0,0 +1,12 @@
+window.history.pushState({page: 2}, null, null);
+
+window.onpopstate = function (event) {
+  if (event) {
+    var r = confirm('Hold on! Your data has already been saved. Are you sure you want to go back to the previous page and reload the signup process?');
+    if (r === true) {
+      history.back();
+    } else {
+      window.history.pushState({page: 2}, '', '');
+    }
+  }
+}
diff --git a/ckanext-hdx_theme/ckanext/hdx_theme/fanstatic/webassets.yml b/ckanext-hdx_theme/ckanext/hdx_theme/fanstatic/webassets.yml
index b7abd7184d..b817dbda72 100644
--- a/ckanext-hdx_theme/ckanext/hdx_theme/fanstatic/webassets.yml
+++ b/ckanext-hdx_theme/ckanext/hdx_theme/fanstatic/webassets.yml
@@ -126,6 +126,12 @@ hdx-onboarding-scripts:
     - onboarding/came-from-input.js
     - onboarding/confirm-page-leave.js
 
+prevent-back-button:
+  <<: *common-js
+  output: ckanext-hdx_theme/%(version)s_prevent-back-button.js
+  contents:
+    - onboarding/prevent-back-button.js
+
 search-scripts:
   <<: *common-js
   output: ckanext-hdx_theme/%(version)s_search-scripts.js
diff --git a/ckanext-hdx_theme/ckanext/hdx_theme/templates/onboarding/signup/verify-email.html b/ckanext-hdx_theme/ckanext/hdx_theme/templates/onboarding/signup/verify-email.html
index 9bfff85ed2..26be460931 100644
--- a/ckanext-hdx_theme/ckanext/hdx_theme/templates/onboarding/signup/verify-email.html
+++ b/ckanext-hdx_theme/ckanext/hdx_theme/templates/onboarding/signup/verify-email.html
@@ -1,5 +1,10 @@
 {% extends "onboarding/base.html" %}
 
+{% block scripts %}
+  {{ super() }}
+  {% asset 'hdx_theme/prevent-back-button' %}
+{% endblock %}
+
 {% set CONST = h.HDX_CONST('UI_CONSTANTS')['ONBOARDING']['VERIFY_EMAIL'] %}
 
 {% block subtitle %}{{ _('User info') }}{% endblock %}