feat: add CIE authentication callback page with polling mechanism for session verification

app/pages/auth/cie/callback.vue

@@ -0,0 +1,119 @@
+<script setup lang="ts">
+import { onBeforeUnmount, onMounted, ref } from 'vue'
+
+definePageMeta({
+  middleware: 'guest'
+})
+
+useHead({ title: 'Accesso CIE - Visione' })
+
+const route = useRoute()
+const router = useRouter()
+const { fetchCieSession, handleLoginSuccess } = useAuth()
+
+const state = computed(() => {
+  const value = route.query.state
+  return typeof value === 'string' ? value : ''
+})
+
+const isLoading = ref(true)
+const errorMessage = ref('')
+const statusMessage = ref('Verifica dell’autenticazione CIE in corso...')
+
+let pollTimer: ReturnType<typeof setTimeout> | null = null
+let attempts = 0
+const maxAttempts = 30
+
+const stopPolling = () => {
+  if (pollTimer) {
+    clearTimeout(pollTimer)
+    pollTimer = null
+  }
+}
+
+const scheduleNextPoll = () => {
+  pollTimer = setTimeout(checkSession, 2000)
+}
+
+const checkSession = async () => {
+  if (!state.value) {
+    isLoading.value = false
+    errorMessage.value = 'Sessione CIE non valida: parametro state mancante.'
+    return
+  }
+
+  attempts += 1
+
+  try {
+    const res = await fetchCieSession(state.value)
+
+    if (res.status === 'authenticated' && res.auth?.token) {
+      stopPolling()
+      await handleLoginSuccess(res.auth.token)
+      return
+    }
+
+    if (['failed', 'expired', 'cancelled', 'error'].includes(res.status)) {
+      stopPolling()
+      isLoading.value = false
+      errorMessage.value = 'Autenticazione CIE non completata. Riprova dal login.'
+      return
+    }
+
+    if (attempts >= maxAttempts) {
+      stopPolling()
+      isLoading.value = false
+      errorMessage.value = 'Tempo di attesa scaduto durante la verifica CIE. Riprova.'
+      return
+    }
+
+    statusMessage.value = 'Autenticazione completata sul provider. Attendo conferma finale da Visione...'
+    scheduleNextPoll()
+  } catch (err: any) {
+    stopPolling()
+    isLoading.value = false
+    errorMessage.value = err.data?.message || 'Errore durante la verifica della sessione CIE.'
+  }
+}
+
+onMounted(() => {
+  checkSession()
+})
+
+onBeforeUnmount(() => {
+  stopPolling()
+})
+</script>
+
+<template>
+  <div class="d-flex align-items-center bg-light py-5">
+    <div class="container">
+      <div class="row justify-content-center">
+        <div class="col-12 col-md-8 col-lg-6">
+          <div class="card card-bg shadow-sm">
+            <div class="card-body p-4 p-md-5 text-center">
+              <BIIcon name="it-card" size="xl" color="primary" class="mb-3" />
+              <h1 class="h3 font-weight-bold mb-3">Accesso con CIE</h1>
+
+              <div v-if="isLoading" class="py-3">
+                <div class="spinner-border text-primary mb-3" role="status">
+                  <span class="visually-hidden">Caricamento...</span>
+                </div>
+                <p class="text-muted mb-0">{{ statusMessage }}</p>
+              </div>
+
+              <div v-else-if="errorMessage" class="py-2">
+                <div class="alert alert-danger text-start mb-4" role="alert">
+                  {{ errorMessage }}
+                </div>
+                <button class="btn btn-primary" @click="router.push('/auth/login')">
+                  Torna al login
+                </button>
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
+</template>

app/pages/auth/login.vue

@@ -7,16 +7,20 @@ definePageMeta({
 
 useHead({ title: 'Accedi - Visione' })
 
-const { requestOtp, verifyOtp, handleLoginSuccess } = useAuth()
+const runtimeConfig = useRuntimeConfig()
+const { requestOtp, verifyOtp, handleLoginSuccess, startCieLogin } = useAuth()
 
 // UI State
 const otpStep = ref<1 | 2>(1)
 const isLoading = ref(false)
+const isCieLoading = ref(false)
 const errorMessage = ref('')
 
 const email = ref('')
 const otpCode = ref('')
 
+const cieCallbackUrl = `${runtimeConfig.public.url}/auth/cie/callback`
+
 const handleRequestOtp = async () => {
   isLoading.value = true
   errorMessage.value = ''
@@ -42,6 +46,21 @@ const handleVerifyOtp = async () => {
     isLoading.value = false
   }
 }
+
+const handleCieLogin = async () => {
+  isCieLoading.value = true
+  errorMessage.value = ''
+  try {
+    const res = await startCieLogin(cieCallbackUrl)
+    await navigateTo(res.authorization_url, {
+      external: true,
+      replace: true,
+    })
+  } catch (err: any) {
+    errorMessage.value = err.data?.message || 'Avvio autenticazione CIE non riuscito. Riprova.'
+    isCieLoading.value = false
+  }
+}
 </script>
 
 <template>
@@ -61,9 +80,14 @@ const handleVerifyOtp = async () => {
             <div class="card-body p-4 p-md-5">
 
               
-              <button class="btn btn-primary w-100 mb-4 d-flex align-items-center justify-content-center gap-2" disabled title="Integrazione CIE prevista per la fase successiva">
+              <button
+                class="btn btn-primary w-100 mb-4 d-flex align-items-center justify-content-center gap-2"
+                :disabled="isCieLoading || isLoading"
+                @click="handleCieLogin"
+              >
+                <span v-if="isCieLoading" class="spinner-border spinner-border-sm" role="status" aria-hidden="true"></span>
                 <BIIcon name="it-card" size="sm" color="white" />
-                Entra con CIE (Presto disponibile)
+                Entra con CIE
               </button>
 
               <div class="d-flex align-items-center my-4">