feat: first attempt of terminal

frontend/package.json

@@ -55,6 +55,7 @@
     "@sveltejs/adapter-node": "^5.0.1",
     "@sveltejs/adapter-static": "^3.0.1",
     "@webcontainer/api": "^1.1.9",
+    "@xterm/xterm": "^5.5.0",
     "@xyflow/svelte": "^0.1.3",
     "chart.js": "^4.4.3",
     "diff": "^5.2.0",
@@ -67,6 +68,8 @@
     "svelte-french-toast": "^1.2.0",
     "svelte-local-storage-store": "^0.6.4",
     "svelte-monaco": "^0.3.0",
-    "svelte-purify": "^1.1.27"
+    "svelte-purify": "^1.1.27",
+    "xterm": "^5.3.0",
+    "xterm-addon-fit": "^0.8.0"
   }
 }

frontend/src/lib/components/map/Console.svelte

@@ -0,0 +1,157 @@
+<script lang="ts">
+  import { onDestroy, onMount } from "svelte";
+  import darkTheme from "$lib/stores/theme";
+  import { terminal_size } from "$lib/stores/terminal";
+
+  import { Terminal } from "xterm";
+  import { FitAddon } from "xterm-addon-fit";
+
+  export let podName: string;
+  export let projectId: string;
+
+  const terminal = new Terminal({
+    convertEol: true,
+    disableStdin: false,
+    cursorBlink: true,
+    fontFamily: "monospace",
+    fontSize: 14,
+    theme: $darkTheme
+      ? {
+          foreground: "#d2d2d2",
+          background: "#2B3441",
+          cursor: "#adadad",
+          black: "#000000",
+          red: "#d81e00",
+          green: "#5ea702",
+          yellow: "#cfae00",
+          blue: "#427ab3",
+          magenta: "#89658e",
+          cyan: "#00a7aa",
+          white: "#dbded8",
+          brightBlack: "#686a66",
+          brightRed: "#f54235",
+          brightGreen: "#99e343",
+          brightYellow: "#fdeb61",
+          brightBlue: "#84b0d8",
+          brightMagenta: "#bc94b7",
+          brightCyan: "#37e6e8",
+          brightWhite: "#f1f1f0"
+        }
+      : {
+          foreground: "#d2d2d2",
+          background: "#2B3441",
+          cursor: "#adadad",
+          black: "#000000",
+          red: "#d81e00",
+          green: "#5ea702",
+          yellow: "#cfae00",
+          blue: "#427ab3",
+          magenta: "#89658e",
+          cyan: "#00a7aa",
+          white: "#dbded8",
+          brightBlack: "#686a66",
+          brightRed: "#f54235",
+          brightGreen: "#99e343",
+          brightYellow: "#fdeb61",
+          brightBlue: "#84b0d8",
+          brightMagenta: "#bc94b7",
+          brightCyan: "#37e6e8",
+          brightWhite: "#f1f1f0"
+        },
+    scrollOnUserInput: true
+  });
+
+  let socket: WebSocket;
+  const fitAddon = new FitAddon();
+  terminal.loadAddon(fitAddon);
+
+  const connectWebSocket = () => {
+    let host = window.location.host;
+    if (host.includes("localhost")) {
+      host = "localhost:8090";
+    }
+
+    const protocol = window.location.protocol === "https:" ? "wss" : "ws";
+    socket = new WebSocket(`${protocol}://${host}/ws/k8s/terminal`);
+
+    socket.binaryType = "arraybuffer";
+
+    socket.onopen = () => {
+      const message = JSON.stringify({ projectId, podName });
+      socket.send(message);
+      terminal.onData((data) => {
+        socket.send(new TextEncoder().encode(data));
+      });
+    };
+
+    socket.onmessage = (event: MessageEvent) => {
+      if (event.data instanceof ArrayBuffer) {
+        terminal.write(new TextDecoder().decode(event.data));
+      }
+    };
+
+    socket.onerror = (error: Event) => {
+      const errorMessage = (error as ErrorEvent).message || "An error occurred";
+      terminal.write(`\r\nWebSocket error: ${errorMessage}\r\n`);
+    };
+
+    socket.onclose = () => {
+      terminal.write("\r\nWebSocket closed. Attempting to reconnect...\r\n");
+      setTimeout(connectWebSocket, 5000);
+    };
+  };
+
+  terminal.onResize((size) => {
+    const terminal_size = {
+      cols: size.cols,
+      rows: size.rows,
+      y: size.rows,
+      x: size.cols
+    };
+    if (socket.readyState === WebSocket.OPEN) {
+      socket.send(new TextEncoder().encode("\x01" + JSON.stringify(terminal_size)));
+    }
+  });
+
+  let div: HTMLDivElement;
+
+  onMount(() => {
+    connectWebSocket();
+    terminal.open(div);
+    setTimeout(() => {
+      fitAddon.fit();
+    }, 300);
+  });
+
+  onDestroy(() => {
+    socket?.close();
+    terminal.dispose();
+  });
+
+  export const update_height = () => {
+    fitAddon.fit();
+  };
+
+  $: {
+    $terminal_size;
+    setTimeout(() => {
+      update_height();
+    }, 300);
+  }
+</script>
+
+<div bind:this={div} style="height: 100%; width: 100%;" />
+
+<style>
+  div {
+    height: 100%;
+    width: 100%;
+  }
+  div :global(.xterm) {
+    height: 100%;
+    padding: 5px;
+  }
+  div :global(.xterm-viewport) {
+    overflow-y: hidden !important;
+  }
+</style>

frontend/src/lib/components/map/Desktop.svelte

@@ -0,0 +1,14 @@
+<script lang="ts">
+  import darkTheme from "$lib/stores/theme";
+  import type { ComponentType, SvelteComponent } from "svelte";
+  // eslint-disable-next-line @typescript-eslint/naming-convention
+  export let Console: ComponentType<SvelteComponent>;
+  export let podName: string;
+  export let projectId: string;
+</script>
+
+{#key $darkTheme}
+  <div class="h-full overflow-y-auto">
+    <svelte:component this={Console} {podName} {projectId} />
+  </div>
+{/key}

frontend/src/lib/components/map/PlaceholderComponent.svelte

@@ -0,0 +1,9 @@
+<div />
+
+<style>
+  div {
+    background-color: var(--sk-back-1);
+    width: 100%;
+    height: 100%;
+  }
+</style>

frontend/src/lib/components/map/ShellObject.svelte

@@ -0,0 +1,26 @@
+<script lang="ts">
+  import { onDestroy, onMount, type ComponentType, type SvelteComponent } from "svelte";
+  import PlaceholderComponent from "./PlaceholderComponent.svelte";
+  import Desktop from "./Desktop.svelte";
+  export let podName: string;
+  export let projectId: string;
+
+  let Console: ComponentType<SvelteComponent> = PlaceholderComponent;
+  let clear: number;
+  // let loadingCodeEditor = false;
+
+  onMount(async () => {
+    // loadingCodeEditor = true;
+    Console = (await import("$lib/components/map/Console.svelte")).default;
+  });
+
+  onDestroy(() => {
+    // loadingCodeEditor = false;
+    Console = PlaceholderComponent;
+    clearInterval(clear);
+  });
+</script>
+
+<div class="p-2 rounded-lg bg-gray-800">
+  <Desktop {Console} {podName} {projectId} />
+</div>

frontend/src/lib/stores/terminal.ts

@@ -0,0 +1,6 @@
+import { writable } from "svelte/store";
+
+export const terminal_size = writable({ height: 65 });
+
+// get pathnames from url
+export const pathname = writable(window.location.pathname);

frontend/src/routes/+layout.svelte

@@ -1,6 +1,7 @@
 <script lang="ts">
-  import "../app.postcss";
-  import "../app.css";
+  import "../styles/app.postcss";
+  import "../styles/app.css";
+  import "../styles/xterm.css";
   import { metadata } from "$lib/stores/metadata";
   import { site } from "$lib/config";
   import { beforeNavigate } from "$app/navigation";

frontend/src/routes/app/projects/[id]/deployments/[id]/map/+page.svelte

@@ -21,6 +21,7 @@
     Lock,
     NetworkIcon,
     ScrollText,
+    TerminalSquare,
     Trash,
     X
   } from "lucide-svelte";
@@ -29,6 +30,8 @@
   import EventStream from "$lib/components/map/EventStream.svelte";
   import toast from "svelte-french-toast";
   import selectedDeploymentId from "$lib/stores/deployment";
+  import ShellObject from "$lib/components/map/ShellObject.svelte";
+  import selectedProjectId from "$lib/stores/project";
 
   let transitionParamsRight = {
     x: 320,
@@ -599,6 +602,13 @@
             </div>
             <LogStream podName={$selectedNode?.name ?? ""} />
           </TabItem>
+          <TabItem>
+            <div slot="title" class="flex items-center gap-2">
+              <TerminalSquare />
+              Shell
+            </div>
+            <ShellObject podName={$selectedNode?.name ?? ""} projectId={$selectedProjectId} />
+          </TabItem>
           <TabItem>
             <div slot="title" class="flex items-center gap-2">
               <Bell />