partial updating

src/client/index.tsx

@@ -3,14 +3,13 @@ import { define, Styles } from 'forge'
 import type { App, AppState } from '../shared/types'
 import { theme } from './themes'
 import { Modal, initModal } from './tags/modal'
+import { initUpdate } from './update'
 import { openEmojiPicker } from './tags/emoji-picker'
 
 // UI state (survives re-renders)
 let selectedApp: string | null = localStorage.getItem('selectedApp')
 let sidebarCollapsed: boolean = localStorage.getItem('sidebarCollapsed') === 'true'
 
-const DEFAULT_EMOJI = '🖥️'
-
 // Server state (from SSE)
 let apps: App[] = []
 
@@ -382,7 +381,7 @@ const AppDetail = ({ app }: { app: App }) => (
   <>
     <MainHeader>
       <MainTitle>
-        <OpenEmojiPicker app={app}>{app.icon ?? DEFAULT_EMOJI}</OpenEmojiPicker>
+        <OpenEmojiPicker app={app}>{app.icon}</OpenEmojiPicker>
         &nbsp;
         {app.name}
       </MainTitle>
@@ -510,10 +509,10 @@ const Dashboard = () => {
               title={sidebarCollapsed ? app.name : undefined}
             >
               {sidebarCollapsed ? (
-                <span style={{ fontSize: 18 }}>{app.icon ?? DEFAULT_EMOJI}</span>
+                <span style={{ fontSize: 18 }}>{app.icon}</span>
               ) : (
                 <>
-                  <span style={{ fontSize: 14 }}>{app.icon ?? DEFAULT_EMOJI}</span>
+                  <span style={{ fontSize: 14 }}>{app.icon}</span>
                   {app.name}
                   <StatusDot state={app.state} style={{ marginLeft: 'auto' }} />
                 </>
@@ -543,8 +542,9 @@ const render = () => {
   renderApp(<Dashboard />, document.getElementById('app')!)
 }
 
-// Initialize modal with render function
+// Initialize render functions
 initModal(render)
+initUpdate(render)
 
 // Set theme based on system preference
 const setTheme = () => {

src/client/update.tsx

@@ -0,0 +1,25 @@
+import { render } from 'hono/jsx/dom'
+import type { Child } from 'hono/jsx'
+
+let globalRenderFn: (() => void) | null = null
+
+export const initUpdate = (renderFn: () => void) => {
+  globalRenderFn = renderFn
+}
+
+/**
+ * Update the UI from state.
+ *
+ * update()                              - redraw everything
+ * update('#emoji-results', <Results />) - target specific element
+ */
+export function update(): void
+export function update(selector: string, component: Child): void
+export function update(selector?: string, component?: Child) {
+  if (selector && component !== undefined) {
+    const el = document.querySelector(selector) as HTMLElement | null
+    if (el) render(component, el)
+  } else {
+    globalRenderFn?.()
+  }
+}

src/server/apps.ts

@@ -8,6 +8,7 @@ import type { App as SharedApp, AppState, LogLine } from '../shared/types'
 
 export type { AppState } from '../shared/types'
 
+const DEFAULT_EMOJI = '🖥️'
 const APPS_DIR = join(process.env.DATA_DIR ?? '.', 'apps')
 const MAX_LOGS = 100
 
@@ -42,29 +43,20 @@ const allAppDirs = () => {
     .sort()
 }
 
-/** Returns names of valid apps (those with scripts.toes in package.json) */
-export const appNames = () => allAppDirs().filter(isApp)
-
 let NEXT_PORT = 3001
 const getPort = () => NEXT_PORT++
 
-/** Discover all apps and set initial states */
 const discoverApps = () => {
   for (const dir of allAppDirs()) {
     const { pkg, error } = loadApp(dir)
     const state: AppState = error ? 'invalid' : 'stopped'
-    const icon = pkg.toes?.icon
+    const icon = pkg.toes?.icon ?? DEFAULT_EMOJI
     _apps.set(dir, { name: dir, state, icon, error })
   }
 }
 
-/** Start all valid apps */
-export const runApps = () => {
-  for (const dir of appNames()) {
-    const port = getPort()
-    runApp(dir, port)
-  }
-}
+export const runApps = () =>
+  allAppDirs().filter(isApp).forEach(startApp)
 
 type LoadResult = { pkg: any; error?: string }
 
@@ -197,6 +189,7 @@ export const getApp = (dir: string): App | undefined => _apps.get(dir)
 export const startApp = (dir: string) => {
   const app = _apps.get(dir)
   if (!app || app.state !== 'stopped') return
+  if (!isApp(dir)) return
   runApp(dir, getPort())
 }
 

src/server/index.tsx

@@ -50,6 +50,16 @@ app.get('/api/apps/stream', c => {
   })
 })
 
+app.get('/api/apps', c => {
+  const apps = allApps().map(app => {
+    const clone = { ...app }
+    delete clone.proc
+    delete clone.logs
+    return clone
+  })
+  return c.json(apps)
+})
+
 app.post('/api/apps/:app/start', c => {
   const appName = c.req.param('app')
   if (!appName) return c.json({ error: 'App not found' }, 404)

src/shared/types.ts

@@ -8,7 +8,7 @@ export type LogLine = {
 export type App = {
   name: string
   state: AppState
-  icon?: string
+  icon: string
   error?: string
   port?: number
   started?: number