Files
dockhand/routes/terminal/TerminalEmulator.svelte
Jarek Krochmalski 62e3c6439e Initial commit
2025-12-28 21:16:03 +01:00

344 lines
8.6 KiB
Svelte

<script lang="ts">
import { onMount, onDestroy } from 'svelte';
import { RefreshCw, Copy, Trash2, Type } from 'lucide-svelte';
import * as Select from '$lib/components/ui/select';
// Dynamic imports for browser-only xterm
let Terminal: any;
let FitAddon: any;
let WebLinksAddon: any;
let xtermLoaded = $state(false);
interface Props {
containerId: string;
containerName: string;
shell: string;
user: string;
envId: number | null;
class?: string;
}
let { containerId, containerName, shell, user, envId, class: className = '' }: Props = $props();
// Single session for this terminal instance
let terminal: any = null;
let fitAddon: any = null;
let ws: WebSocket | null = null;
let sessionInitialized = $state(false);
let terminalRef: HTMLDivElement;
let connected = $state(false);
let error = $state<string | null>(null);
// Font size options
let fontSize = $state(13);
const fontSizeOptions = [10, 12, 13, 14, 16];
// Clear terminal
function clearTerminal() {
if (terminal) {
terminal.clear();
terminal.focus();
}
}
// Copy terminal output
async function copyOutput() {
if (terminal) {
const buffer = terminal.buffer.active;
let text = '';
for (let i = 0; i < buffer.length; i++) {
const line = buffer.getLine(i);
if (line) {
text += line.translateToString(true) + '\n';
}
}
try {
await navigator.clipboard.writeText(text.trim());
} catch (err) {
console.error('Failed to copy:', err);
}
terminal.focus();
}
}
// Update font size
function updateFontSize(newSize: number) {
fontSize = newSize;
if (terminal) {
terminal.options.fontSize = newSize;
fitAddon?.fit();
}
}
function initTerminal() {
if (!terminalRef || !xtermLoaded) return;
// If we already have a terminal, just re-attach it
if (terminal && sessionInitialized) {
terminal.open(terminalRef);
fitAddon?.fit();
terminal.focus();
return;
}
// Create new terminal
terminal = new Terminal({
cursorBlink: true,
fontFamily: 'Menlo, Monaco, "Courier New", monospace',
fontSize: fontSize,
theme: {
background: '#0c0c0c',
foreground: '#cccccc',
cursor: '#ffffff',
cursorAccent: '#000000',
selectionBackground: '#264f78',
black: '#0c0c0c',
red: '#c50f1f',
green: '#13a10e',
yellow: '#c19c00',
blue: '#0037da',
magenta: '#881798',
cyan: '#3a96dd',
white: '#cccccc',
brightBlack: '#767676',
brightRed: '#e74856',
brightGreen: '#16c60c',
brightYellow: '#f9f1a5',
brightBlue: '#3b78ff',
brightMagenta: '#b4009e',
brightCyan: '#61d6d6',
brightWhite: '#f2f2f2'
}
});
fitAddon = new FitAddon();
terminal.loadAddon(fitAddon);
terminal.loadAddon(new WebLinksAddon());
terminal.open(terminalRef);
fitAddon.fit();
// Handle Ctrl+L to clear terminal
terminal.attachCustomKeyEventHandler((e: KeyboardEvent) => {
if ((e.ctrlKey || e.metaKey) && e.key === 'l') {
e.preventDefault();
clearTerminal();
return false;
}
return true;
});
// Handle terminal input
terminal.onData((data: string) => {
if (ws && ws.readyState === WebSocket.OPEN) {
ws.send(JSON.stringify({ type: 'input', data }));
}
});
// Handle resize
terminal.onResize(({ cols, rows }: { cols: number; rows: number }) => {
if (ws && ws.readyState === WebSocket.OPEN) {
ws.send(JSON.stringify({ type: 'resize', cols, rows }));
}
});
sessionInitialized = true;
// Connect to container
connect();
}
function connect() {
if (!terminal) return;
error = null;
const protocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
let wsUrl = `${protocol}//${window.location.host}/api/containers/${containerId}/exec?shell=${encodeURIComponent(shell)}&user=${encodeURIComponent(user)}`;
if (envId) {
wsUrl += `&envId=${envId}`;
}
terminal.writeln(`\x1b[90mConnecting to ${containerName}...\x1b[0m`);
terminal.writeln(`\x1b[90mShell: ${shell}, User: ${user || 'default'}\x1b[0m`);
terminal.writeln('');
ws = new WebSocket(wsUrl);
ws.onopen = () => {
connected = true;
terminal?.focus();
// Send initial resize
if (fitAddon && terminal) {
const dims = fitAddon.proposeDimensions();
if (dims) {
ws?.send(JSON.stringify({ type: 'resize', cols: dims.cols, rows: dims.rows }));
}
}
};
ws.onmessage = (event) => {
try {
const msg = JSON.parse(event.data);
if (msg.type === 'output') {
terminal?.write(msg.data);
} else if (msg.type === 'error') {
error = msg.message;
terminal?.writeln(`\x1b[31mError: ${msg.message}\x1b[0m`);
} else if (msg.type === 'exit') {
terminal?.writeln('\x1b[90m\r\nSession ended.\x1b[0m');
connected = false;
}
} catch (e) {
terminal?.write(event.data);
}
};
ws.onerror = () => {
error = 'Connection error';
terminal?.writeln('\x1b[31mConnection error\x1b[0m');
};
ws.onclose = () => {
connected = false;
terminal?.writeln('\x1b[90mDisconnected.\x1b[0m');
};
}
function reconnect() {
if (ws) {
ws.close();
ws = null;
}
connected = false;
terminal?.writeln('\x1b[90m\r\nReconnecting...\x1b[0m');
connect();
}
// Handle window resize
function handleResize() {
if (fitAddon && terminal) {
fitAddon.fit();
}
}
// Initialize terminal when DOM is ready
$effect(() => {
if (xtermLoaded && terminalRef && !sessionInitialized) {
setTimeout(() => {
initTerminal();
}, 50);
}
});
// Fit terminal on mount
$effect(() => {
if (sessionInitialized && fitAddon && terminal) {
setTimeout(() => {
fitAddon?.fit();
terminal?.focus();
}, 50);
}
});
onMount(async () => {
window.addEventListener('resize', handleResize);
// Dynamically load xterm modules
const xtermModule = await import('@xterm/xterm');
const fitModule = await import('@xterm/addon-fit');
const webLinksModule = await import('@xterm/addon-web-links');
Terminal = xtermModule.Terminal || xtermModule.default?.Terminal;
FitAddon = fitModule.FitAddon || fitModule.default?.FitAddon;
WebLinksAddon = webLinksModule.WebLinksAddon || webLinksModule.default?.WebLinksAddon;
await import('@xterm/xterm/css/xterm.css');
xtermLoaded = true;
});
onDestroy(() => {
window.removeEventListener('resize', handleResize);
// Clean up
if (ws) ws.close();
if (terminal) terminal.dispose();
});
</script>
<div class="flex flex-col bg-zinc-950 rounded-lg border border-zinc-800 overflow-hidden {className}">
<!-- Header bar -->
<div class="flex items-center justify-between px-3 py-1.5 border-b border-zinc-800 bg-zinc-900/50 shrink-0">
<div class="flex items-center gap-2">
<span class="text-xs text-zinc-400">Terminal:</span>
<span class="text-xs text-zinc-200 font-medium">{containerName}</span>
{#if connected}
<span class="inline-flex items-center gap-1 text-xs text-green-500">
<span class="w-1.5 h-1.5 rounded-full bg-green-500 animate-pulse"></span>
Connected
</span>
{:else}
<span class="text-xs text-zinc-500">Disconnected</span>
{/if}
</div>
<div class="flex items-center gap-2">
<!-- Font size -->
<Select.Root type="single" value={String(fontSize)} onValueChange={(v) => updateFontSize(Number(v))}>
<Select.Trigger class="h-6 w-16 bg-zinc-800 border-zinc-700 text-xs text-zinc-300 px-1.5">
<Type class="w-3 h-3 mr-1 text-zinc-400" />
<span>{fontSize}px</span>
</Select.Trigger>
<Select.Content>
{#each fontSizeOptions as size}
<Select.Item value={String(size)} label="{size}px">
<Type class="w-3 h-3 mr-1.5 text-muted-foreground" />
{size}px
</Select.Item>
{/each}
</Select.Content>
</Select.Root>
<!-- Clear -->
<button
onclick={clearTerminal}
class="p-1 rounded hover:bg-zinc-800 transition-colors"
title="Clear terminal (Ctrl+L)"
>
<Trash2 class="w-3 h-3 text-zinc-500 hover:text-zinc-300" />
</button>
<!-- Copy -->
<button
onclick={copyOutput}
class="p-1 rounded hover:bg-zinc-800 transition-colors"
title="Copy output"
>
<Copy class="w-3 h-3 text-zinc-500 hover:text-zinc-300" />
</button>
<!-- Reconnect -->
{#if !connected}
<button
onclick={reconnect}
class="flex items-center gap-1 px-1.5 py-0.5 rounded text-xs bg-amber-500/20 ring-1 ring-amber-500/50 text-amber-400 hover:bg-amber-500/30 transition-colors"
title="Reconnect"
>
<RefreshCw class="w-3 h-3" />
</button>
{/if}
</div>
</div>
<!-- Terminal content -->
<div class="flex-1 overflow-hidden p-1">
<div bind:this={terminalRef} class="h-full w-full"></div>
</div>
</div>
<style>
:global(.xterm) {
height: 100%;
padding: 4px;
}
:global(.xterm-viewport) {
overflow-y: auto !important;
}
</style>