Revert "Revert "Add support for sidebar menu"" (#1135)

This reverts commit 6d59736.

web/src/routes/+layout.svelte

@@ -8,6 +8,8 @@
   import { fly } from "svelte/transition";
   export let data: PageData;
 
+  export let isSidebarOpen: boolean = true;
+
   let models;
   let modelAvailable: boolean;
   const isLoading = false;
@@ -18,6 +20,10 @@
   let dataCht: Response | any = null;
   const unsubscribe = newChat.subscribe((value) => (dataCht = value));
 
+  function toggleSidebar(): void {
+    isSidebarOpen = !isSidebarOpen;
+  }
+
   onMount(() => {
     theme = localStorage.getItem("data-theme") || "dark";
     document.documentElement.setAttribute("data-theme", theme);
@@ -110,9 +116,25 @@
   });
 </script>
 
+<button on:click={toggleSidebar} class="btn btn-square z-10 fixed">
+  <svg
+    xmlns="http://www.w3.org/2000/svg"
+    fill="none"
+    viewBox="0 0 24 24"
+    class="inline-block w-5 h-5 stroke-current"
+    ><path
+      stroke-linecap="round"
+      stroke-linejoin="round"
+      stroke-width="2"
+      d="M4 6h16M4 12h16M4 18h16"
+    ></path></svg
+  >
+</button>
 <aside
   id="default-sidebar"
-  class="border-base-content/[.2] fixed left-0 top-0 z-40 h-screen w-80 -translate-x-full border-r transition-transform overflow-hidden translate-x-0 aria-label=Sidebar"
+  class="border-base-content/[.2] fixed left-0 top-0 z-40 h-screen -translate-x-full border-r transition-transform overflow-hidden translate-x-0 aria-label=Sidebar"
+  class:w-75={isSidebarOpen}
+  class:w-0={!isSidebarOpen}
 >
   <div
     class="bg-base-200 relative h-screen py-1 px-2 overflow-hidden flex flex-col items-center justify-between"
@@ -150,6 +172,19 @@
         </svg>
         <span>New Chat</span>
       </button>
+      <button
+        id="toggle-sidebar-btn"
+        tabindex="0"
+        on:click={toggleSidebar}
+        on:keydown={(event) => {
+          if (event.key === "Escape") {
+            toggleSidebar();
+          }
+        }}
+        aria-label="Close Sidebar"
+        class="btn btn-ghost flex-shrink-0"
+        >&#10005;
+      </button>
     </div>
     <ul
       class="my-1 w-full h-[85%] overflow-y-auto no-scrollbar firefox-no-scrollbar ie-edge-no-scrollbar"
@@ -380,6 +415,6 @@
   </div>
 </aside>
 
-<div class={"relative h-full transition-all md:ml-80"}>
+<div class={"h-full" + (isSidebarOpen ? " ml-64 min-w-64" : " min-w-0")}>
   <slot />
 </div>