Add collapsible left menu to navbar

src/lib/Article.svelte

@@ -1,11 +1,10 @@
 <script lang="ts">
   import { ndk } from '$lib/ndk';
-  import { idList } from '$lib/stores';
+  import { idList, isLeftHamburgerMenuInUse, leftHamburgerMenuHrefs, leftHamburgerMenuItems } from '$lib/stores';
   import type { NDKEvent } from '@nostr-dev-kit/ndk';
   import { page } from '$app/stores';
   import { Heading, Sidebar, SidebarGroup, SidebarItem, SidebarWrapper, Skeleton, TextPlaceholder } from 'flowbite-svelte';
   import showdown from 'showdown';
-  import { sineIn } from 'svelte/easing';
   import { onMount } from 'svelte';
   
   $: activeHash = $page.url.hash;
@@ -13,7 +12,25 @@
   async function getEvents(): Promise<NDKEvent[]> {
     const eventPromises = $idList.map(async (id) => await $ndk.fetchEvent(id));
     const events = await Promise.all(eventPromises);
-    return events.filter((event) => event != null);
+    
+    const filteredEvents = events.filter((event) => event != null);
+
+    const eventNames: string[] = [];
+    const eventHrefs = new Map<string, string>();
+
+    filteredEvents.forEach(event => {
+      const title = event.getMatchingTags('title')[0][1];
+
+      eventNames.push(title);
+      
+      const normalizedTitle = normalizeHashPath(title);
+      eventHrefs.set(title, `${$page.url.pathname}#${normalizedTitle}`);
+    });
+
+    leftHamburgerMenuItems.set(eventNames);
+    leftHamburgerMenuHrefs.set(eventHrefs);
+
+    return filteredEvents;
   }
 
   function normalizeHashPath(str: string): string {
@@ -40,13 +57,21 @@
     }
   }
 
+  const sidebarBreakpointWidth = 1140;
+  const setLeftHamburgerMenuInUse = () => {
+    isLeftHamburgerMenuInUse.set(window.innerWidth < sidebarBreakpointWidth ? true : false);
+  };
+
   onMount(() => {
     window.addEventListener('hashchange', scrollToElementWithOffset);
     // Also handle the case where the user lands on the page with a hash in the URL
     scrollToElementWithOffset();
 
+    window.addEventListener('resize', setLeftHamburgerMenuInUse);
+
     return () => {
       window.removeEventListener('hashchange', scrollToElementWithOffset);
+      window.removeEventListener('resize', setLeftHamburgerMenuInUse);
     };
   });
 
@@ -54,15 +79,16 @@
 </script>
 
 {#await getEvents()}
+  {#if !$isLeftHamburgerMenuInUse}
     <Sidebar class='sidebar-leather fixed top-20 left-0 px-4 w-60'>
       <SidebarWrapper>
         <Skeleton/>
       </SidebarWrapper>
     </Sidebar>
     <TextPlaceholder class='max-w-2xl'/>
+  {/if}
 {:then events}
-  <!-- TODO: Collapse the sidebar when the page gets below a certain width. -->
-  <!-- TODO: Handle hash paths for navigation within the article. -->
+  {#if !$isLeftHamburgerMenuInUse}
     <Sidebar class='sidebar-leather fixed top-20 left-0 px-4 w-60' {activeHash}>
       <SidebarWrapper>
         <SidebarGroup class='sidebar-group-leather overflow-y-scroll'>
@@ -76,6 +102,7 @@
         </SidebarGroup>
       </SidebarWrapper>
     </Sidebar>
+  {/if}
   <div class='flex flex-col space-y-4 max-w-2xl'>
     {#each events as event}
       <div class='note-leather flex flex-col space-y-2'>

src/lib/components/Navigation.svelte

@@ -1,11 +1,21 @@
 <script lang="ts">
+  import { isLeftHamburgerMenuInUse, leftHamburgerMenuHrefs, leftHamburgerMenuItems } from '$lib/stores';
   import { DarkMode, Navbar, NavLi, NavUl, NavHamburger, NavBrand } from 'flowbite-svelte';
+  import { get } from 'svelte/store';
 
   let className: string;
   export { className as class };
 </script>
 
 <Navbar class={`Navbar navbar-leather ${className}`}>
+  {#if $isLeftHamburgerMenuInUse}
+    <NavHamburger class='btn-leather' />
+    <NavUl class='ul-leather'>
+    {#each $leftHamburgerMenuItems as menuItem}
+      <NavLi href={$leftHamburgerMenuHrefs.get(menuItem)}>{menuItem}</NavLi>
+    {/each}
+    </NavUl>
+  {/if}
   <div class='flex flex-grow justify-between'>
     <NavBrand href='./'>
       <h1 class='font-serif'>Alexandria</h1>

src/lib/stores.ts

@@ -1,3 +1,8 @@
 import { writable } from "svelte/store";
 
 export let idList = writable<string[]>([]);
+
+export const isLeftHamburgerMenuInUse = writable(false);
+
+export const leftHamburgerMenuItems = writable<string[]>([]);
+export const leftHamburgerMenuHrefs = writable<Map<string, string>>(new Map());