From 347214532556a4d541f16f23d4819c7f2941f968 Mon Sep 17 00:00:00 2001
From: Raquel Ferreira <44173946+raquel-f@users.noreply.github.com>
Date: Thu, 31 Aug 2023 16:07:15 +0100
Subject: [PATCH] added scroll feature

---
 scripts/background.js | 44 +++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 42 insertions(+), 2 deletions(-)

diff --git a/scripts/background.js b/scripts/background.js
index 302a79b..159b45e 100644
--- a/scripts/background.js
+++ b/scripts/background.js
@@ -26,10 +26,13 @@ function connect() {
 
 
 const delay = ms => new Promise(resolve => setTimeout(resolve, ms));
-
+var scrollInterval;
 
 const currentTabs = {};
 
+function scrollToBottom() { scrollInterval = setInterval(() => { window.scrollBy(0, 50); }, 3000); }
+function stopScroll() { clearInterval(scrollInterval); }
+
 chrome.runtime.onMessage.addListener(function (req, sender, sendResponse) {
     //sendResponse({ message: "Background has received that message ?" });
     if (req.cmd == "startRefresh") {
@@ -109,9 +112,20 @@ async function refreshTab(tabId) {
 
     const tab = await chrome.tabs.get(tabId);
 
+    // reset the scroll to the top of the page
+    function scrollToTop() { window.scrollTo(0, 0); }
+
     // only refresh if the tab is steady / not loading
     if (tab.status == 'complete') {
-        await chrome.tabs.reload(tabId);
+        await chrome.tabs.reload(tabId, { bypassCache: true }, function () {
+
+            // go to top of the page
+            chrome.scripting
+                .executeScript({
+                    target: { tabId, allFrames: true },
+                    func: scrollToTop
+                })
+        });
     }
 
     (async () => { // this is a fallback in case the callback isn't called (this can be the case if the refresh was manually canceled by a user)
@@ -179,6 +193,19 @@ function stopRefresh(tabId) {
         interval: currentTabs[tabId].interval, // keep the interval in case the user clicks into the extension again, so they can see the time they set
     }
 
+    // stops page from scroll down
+    chrome.scripting
+        .executeScript({
+            target: {
+                tabId: tabId,
+                allFrames: true,
+            },
+            func: stopScroll
+        })
+        .then(() => {
+            console.log('stopped scrolling process...');
+        });
+
     return;
 }
 
@@ -188,5 +215,18 @@ chrome.tabs.onUpdated.addListener(function (tabId, changeInfo, tab) {
 
     if (changeInfo.status == "complete" && currentTabs[tabId].refreshCallback) {
         currentTabs[tabId].refreshCallback();
+
+        // scroll down
+        chrome.scripting
+            .executeScript({
+                target: {
+                    tabId: tabId,
+                    allFrames: true,
+                },
+                func: scrollToBottom
+            })
+            .then(() => {
+                console.log('started scrolling process...');
+            });
     }
 });
\ No newline at end of file