From f8f6e900e7fec5474c5d36c0b4d1f4ed25b76213 Mon Sep 17 00:00:00 2001
From: Akhil <60128585+Chityalaakhil@users.noreply.github.com>
Date: Wed, 4 Dec 2024 00:47:05 +0530
Subject: [PATCH] feature: auto scroll to the selected week in sidebar and
 closing sidebar on ESC (#1531)

* feature: auto scroll to the selected week in sidebar and closing sidebar on ESC

* formatting

---------

Co-authored-by: akhil <akhil49@duck.com>
Co-authored-by: Sargam <sargampoudel100@gmail.com>
---
 src/components/Sidebar.tsx | 56 +++++++++++++++++++++++++++++++++-----
 1 file changed, 49 insertions(+), 7 deletions(-)

diff --git a/src/components/Sidebar.tsx b/src/components/Sidebar.tsx
index 048cf00b..78751267 100644
--- a/src/components/Sidebar.tsx
+++ b/src/components/Sidebar.tsx
@@ -83,10 +83,19 @@ export function Sidebar({
       }
     };
 
+    // listen for ESC key and close the sidebar
+    const handleEscape = (event: KeyboardEvent) => {
+      if (event.key === 'Escape') {
+        closeSidebar();
+      }
+    };
+
     document.addEventListener('mousedown', handleClickOutside);
+    document.addEventListener('keydown', handleEscape);
 
     return () => {
       document.removeEventListener('mousedown', handleClickOutside);
+      document.removeEventListener('keydown', handleEscape);
     };
   }, [sidebarRef]);
 
@@ -129,6 +138,30 @@ export function Sidebar({
     [courseId, findPathToContent, fullCourseContent],
   );
 
+  const activeItemRef = useRef<HTMLDivElement | HTMLAnchorElement | null>(null);
+
+  useEffect(() => {
+    if (sidebarOpen && activeItemRef.current) {
+      activeItemRef.current.scrollIntoView({
+        behavior: 'smooth',
+        block: 'center',
+      });
+      // focus on the active item
+      if (activeItemRef.current instanceof HTMLAnchorElement) {
+        activeItemRef.current.focus();
+      } else if (activeItemRef.current instanceof HTMLDivElement) {
+        // check for the first focusable element and focus on it
+        const firstFocusableElement =
+          activeItemRef.current.querySelector('button, a');
+        if (firstFocusableElement) {
+          (
+            firstFocusableElement as HTMLButtonElement | HTMLAnchorElement
+          ).focus();
+        }
+      }
+    }
+  }, [sidebarOpen]);
+
   const renderContent = useCallback(
     (contents: FullCourseContent[]) => {
       return contents.map((content) => {
@@ -140,6 +173,11 @@ export function Sidebar({
               key={content.id}
               value={`item-${content.id}`}
               className={`rounded-md border-none ${isActiveContent ? 'bg-primary/5' : ''}`}
+              ref={
+                isActiveContent
+                  ? (activeItemRef as React.RefObject<HTMLDivElement>)
+                  : null
+              }
             >
               <AccordionTrigger className="rounded-md px-4 text-lg font-medium capitalize">
                 {content.title}
@@ -156,6 +194,11 @@ export function Sidebar({
             key={content.id}
             href={navigateToContent(content.id) || '#'}
             className={`flex w-full cursor-pointer items-center rounded-md p-4 tracking-tight hover:bg-primary/10 ${isActiveContent ? 'bg-primary/10' : ''}`}
+            ref={
+              isActiveContent
+                ? (activeItemRef as React.RefObject<HTMLAnchorElement>)
+                : null
+            }
           >
             <div className="flex w-full items-center justify-between gap-2">
               <div className="flex items-center gap-2">
@@ -186,10 +229,7 @@ export function Sidebar({
   );
 
   return (
-
-    <div className="sticky top-[55px] z-20 bg-background py-2">
-
- 
+    <div className="sticky top-[72px] z-20 bg-background py-2">
       <Button
         ref={buttonRef}
         onClick={() => setSidebarOpen((s) => !s)}
@@ -209,11 +249,9 @@ export function Sidebar({
             variants={sidebarVariants}
             className="fixed right-0 top-0 z-[99999] flex h-screen w-full flex-col gap-4 overflow-y-auto rounded-r-lg border-l border-primary/10 bg-neutral-50 dark:bg-neutral-900 md:max-w-[30vw]"
           >
-
             <div className="sticky top-0 z-10 flex items-center justify-between border-b border-primary/10 bg-neutral-50 p-5 dark:bg-neutral-900">
               {' '}
               <h4 className="text-xl font-bold tracking-tighter text-primary lg:text-2xl">
-
                 Course Content
               </h4>
               <Button
@@ -224,7 +262,11 @@ export function Sidebar({
                 <X className="size-5" />
               </Button>
             </div>
-            <Accordion type="multiple" className="w-full px-4 pb-20 capitalize">
+            <Accordion
+              type="multiple"
+              defaultValue={currentActiveContentIds.map((num) => `item-${num}`)}
+              className="w-full px-4 capitalize"
+            >
               {memoizedContent}
             </Accordion>
           </motion.div>