Preview: Dev-Modus nur mit dev-Skript waehlbar

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

server/routes/admin/preview.js

@@ -9,12 +9,14 @@ import * as runnerClient from '../../services/previewRunnerClient.js'
 import { runDeploy, fetchPreviewConfig } from '../../services/previewDeploy.js'
 import { withLocks } from '../../services/keyedLock.js'
 import { getRepoInfo } from '../../services/giteaAdmin.js'
+import { repoHasDevScript } from '../../services/previewDevScript.js'
 
 const router = Router()
 router.use(requireAppwriteStaff)
 
 const BUSY = 'Server ausgelastet, versuche es gleich noch mal'
 const MODES = ['auto', 'build', 'dev', 'off']
+const NO_DEV = 'Dieses Projekt hat kein dev-Skript. Reines HTML braucht keinen Dev-Server – Änderungen erscheinen nach jedem Push automatisch.'
 const SHA_RE = /^[0-9a-f]{7,40}$/
 
 function fail(status, message) {
@@ -62,10 +64,14 @@ async function view(doc) {
   }
 }
 
+async function previewBranchOf(doc) {
+  return doc.previewBranch || (await getRepoInfo(doc.repoFullName).catch(() => null))?.defaultBranch || 'main'
+}
+
 // Neubau anstossen (wie beim Bearbeiten/Reaktivieren eines Projekts)
 async function triggerRebuild(doc) {
   const repo = doc.repoFullName
-  const branch = doc.previewBranch || (await getRepoInfo(repo).catch(() => null))?.defaultBranch || 'main'
+  const branch = await previewBranchOf(doc)
   const found = await fetchPreviewConfig(repo, branch).catch(() => null)
   const cfg = {
     enabled: true,
@@ -93,7 +99,11 @@ const wrap = (fn) => async (req, res) => {
 }
 
 router.get('/:id/preview', wrap(async (req, res) => {
-  res.json(await view(await loadProject(req.params.id)))
+  const doc = await loadProject(req.params.id)
+  const devAvailable = doc.repoFullName
+    ? await repoHasDevScript(doc.repoFullName, await previewBranchOf(doc)).catch(() => null)
+    : null
+  res.json({ ...(await view(doc)), devAvailable })
 }))
 
 router.patch('/:id/preview', wrap(async (req, res) => {
@@ -110,6 +120,10 @@ router.patch('/:id/preview', wrap(async (req, res) => {
     }
     return res.json(await view(await getDocument(col(), doc.$id)))
   }
+  if (mode === 'dev' && doc.repoFullName) {
+    const has = await repoHasDevScript(doc.repoFullName, await previewBranchOf(doc)).catch(() => null)
+    if (has === false) throw fail(400, NO_DEV)
+  }
   const updated = await updateDocument(col(), doc.$id, { previewMode: mode })
   await triggerRebuild(updated)
   res.json(await view(await getDocument(col(), doc.$id)))