feat(chat): preserve message drafts in session temp store

frontend/tests/chat-drafts.test.cjs

@@ -0,0 +1,123 @@
+const { test } = require('node:test')
+const assert = require('node:assert/strict')
+const vue = require('vue')
+const { createDraftHarness, memoryStorage } = require('./helpers/chat-drafts.cjs')
+const image = { dataUrl: 'data:image/webp;base64,AAAA', name: 'Skizze.webp' }
+
+test('text and image drafts survive room changes and a browser reload in the same session', t => {
+  const storage = memoryStorage(), first = createDraftHarness({ storage })
+  t.after(first.close)
+  const room = vue.ref('allgemein'), composer = first.useChatDraft(room)
+  composer.draft.value = '  Hallo\nWelt 👋  '
+  composer.draftImage.value = image
+  room.value = 'project_1'
+  assert.equal(composer.draft.value, '')
+  assert.equal(composer.draftImage.value, null)
+  composer.draft.value = 'Projektentwurf'
+  room.value = 'allgemein'
+  assert.equal(composer.draft.value, '  Hallo\nWelt 👋  ')
+  assert.equal(composer.draftImage.value.name, image.name)
+
+  const reloaded = createDraftHarness({ storage })
+  t.after(reloaded.close)
+  const restored = reloaded.useChatDraft('allgemein')
+  assert.equal(restored.draft.value, composer.draft.value)
+  assert.equal(restored.draftImage.value.dataUrl, image.dataUrl)
+  assert.equal(restored.captureDraft().value.clientId, composer.captureDraft().value.clientId)
+  assert.equal(reloaded.useChatDraft('project_1').draft.value, 'Projektentwurf')
+  assert.equal(first.calls.length, 0)
+})
+
+test('tenant and profile scopes cannot read each other; logout removes the session drafts', t => {
+  const ui = createDraftHarness()
+  t.after(ui.close)
+  const composer = ui.useChatDraft('allgemein')
+  composer.draft.value = 'Privater Entwurf'
+  ui.auth.activeTenant = '2'
+  assert.equal(composer.draft.value, '')
+  composer.draft.value = 'Mandant 2'
+  ui.auth.activeTenant = '1'
+  assert.equal(composer.draft.value, 'Privater Entwurf')
+  ui.auth.profile = { id: 'other-profile' }
+  assert.equal(composer.draft.value, '')
+  ui.auth.profile = { id: 'profile-1' }
+  assert.equal(composer.draft.value, 'Privater Entwurf')
+  ui.auth.user = { id: 'another-user' }
+  assert.equal(composer.draft.value, '')
+  assert.equal(Object.keys(ui.storage).length, 0)
+  composer.draft.value = 'Neuer Benutzer'
+  ui.auth.user = null
+  assert.equal(composer.draft.value, '')
+  assert.equal(Object.keys(ui.storage).length, 0)
+})
+
+test('successful sends remove only the captured version, even after changing rooms', t => {
+  const ui = createDraftHarness()
+  t.after(ui.close)
+  const room = vue.ref('allgemein'), composer = ui.useChatDraft(room)
+  composer.draft.value = 'Gesendet'
+  const sent = composer.captureDraft()
+  room.value = 'project_1'
+  composer.draft.value = 'Noch nicht gesendet'
+  composer.clearDraft(sent)
+  assert.equal(composer.draft.value, 'Noch nicht gesendet')
+  room.value = 'allgemein'
+  assert.equal(composer.draft.value, '')
+  composer.draftImage.value = image
+  const older = composer.captureDraft()
+  composer.draft.value = 'Neuer Text zum Bild'
+  composer.clearDraft(older)
+  assert.equal(composer.draft.value, 'Neuer Text zum Bild')
+  assert.equal(composer.draftImage.value.name, image.name)
+  composer.clearDraft(composer.captureDraft())
+  assert.equal(composer.draft.value, '')
+  assert.equal(composer.draftImage.value, null)
+})
+
+test('empty drafts are removed and never enter the shared profile temp_config', async t => {
+  const ui = createDraftHarness()
+  t.after(ui.close)
+  const composer = ui.useChatDraft('direct_user-2')
+  composer.draft.value = 'Geheim'
+  ui.store.modifySearchString('contacts', 'Beispiel')
+  assert.equal(JSON.stringify(ui.calls).includes('Geheim'), false)
+  ui.store.setStoredTempConfig({ settings: { density: 'compact' } })
+  assert.equal(composer.draft.value, 'Geheim')
+  composer.draft.value = ''
+  assert.equal(Object.keys(ui.storage).length, 0)
+})
+
+test('guest conversations never reuse internal drafts and keep temporary text through a retry', t => {
+  const ui = createDraftHarness()
+  t.after(ui.close)
+  ui.useChatDraft('collaboration:one').draft.value = 'Interner Entwurf'
+  const room = vue.ref('collaboration:one'), guest = ui.useChatDraft(room, { persist: false })
+  assert.equal(guest.draft.value, '')
+  guest.draft.value = 'Gastentwurf'
+  assert.equal(guest.draft.value, 'Gastentwurf')
+  room.value = 'collaboration:two'
+  assert.equal(guest.draft.value, '')
+  assert.equal(Object.values(ui.storage).some(value => value.includes('Gastentwurf')), false)
+})
+
+test('corrupt or unavailable browser storage does not prevent writing or sending', t => {
+  const storage = memoryStorage(), initial = createDraftHarness({ storage })
+  t.after(initial.close)
+  initial.useChatDraft('allgemein').draft.value = 'Alt'
+  storage[Object.keys(storage)[0]] = 'invalid json'
+  const corrupt = createDraftHarness({ storage })
+  t.after(corrupt.close)
+  assert.equal(corrupt.useChatDraft('allgemein').draft.value, '')
+  const blocked = createDraftHarness({ storage: {
+    getItem() { throw Error('Blocked') }, setItem() { throw Error('Quota exceeded') }, removeItem() { throw Error('Blocked') },
+  } })
+  t.after(blocked.close)
+  const composer = blocked.useChatDraft('allgemein')
+  composer.draft.value = 'Im Speicher'
+  composer.draftImage.value = image
+  assert.equal(composer.draft.value, 'Im Speicher')
+  assert.equal(composer.draftImage.value.name, image.name)
+  assert.equal(blocked.toasts.length, 1)
+  composer.clearDraft(composer.captureDraft())
+  assert.equal(composer.draft.value, '')
+})