feat(email): add selection and bulk message actions

frontend/pages/email/index.vue

@@ -75,6 +75,10 @@ const messages = ref<EmailMessage[]>([])
 const selectedAccountId = ref("")
 const selectedMailboxPath = ref("INBOX")
 const selectedMessage = ref<EmailMessage | null>(null)
+const checkedMessageIds = ref<string[]>([])
+const bulkAction = ref("")
+const bulkProgress = ref(0)
+const bulkMoveTarget = ref("")
 const search = ref("")
 const loadingAccounts = ref(true)
 const loadingMailboxes = ref(false)
@@ -188,6 +192,89 @@ const filteredMessages = computed(() => {
   ].some((value) => String(value || "").toLowerCase().includes(needle)))
 })
 
+const checkedMessages = computed(() =>
+    filteredMessages.value.filter((message) => checkedMessageIds.value.includes(message.id))
+)
+const allMessagesChecked = computed(() =>
+    checkedMessages.value.length > 0 && checkedMessages.value.length === filteredMessages.value.length
+)
+const bulkDisabled = computed(() => Boolean(bulkAction.value || actionLoading.value || loadingMessages.value || loadingMessage.value || loadingMailboxes.value || syncing.value))
+const bulkMoveOptions = computed(() =>
+    mailboxes.value.filter((mailbox) => mailbox.path !== selectedMailboxPath.value)
+        .map((mailbox) => ({ label: mailboxLabel(mailbox), value: mailbox.path }))
+)
+
+function toggleMessageChecked(messageId: string, checked: boolean) {
+  if (bulkDisabled.value) return
+  checkedMessageIds.value = checked
+      ? [...new Set([...checkedMessageIds.value, messageId])]
+      : checkedMessageIds.value.filter((id) => id !== messageId)
+}
+
+function toggleAllMessages(checked: boolean) {
+  if (bulkDisabled.value) return
+  checkedMessageIds.value = checked ? filteredMessages.value.map((message) => message.id) : []
+}
+
+watch(search, () => {
+  checkedMessageIds.value = checkedMessageIds.value.filter((id) => filteredMessages.value.some((message) => message.id === id))
+})
+
+async function runBulkAction(action: "read" | "unread" | "archive" | "delete" | "move") {
+  if (bulkDisabled.value || !checkedMessages.value.length) return
+  const target = bulkMoveTarget.value
+  if (action === "move" && !target) return
+  const batch = [...checkedMessages.value]
+  if (action === "delete" && !window.confirm(`${batch.length} E-Mails endgültig löschen? Diese Aktion kann nicht rückgängig gemacht werden.`)) return
+
+  bulkAction.value = action
+  bulkProgress.value = 0
+  const failedIds: string[] = []
+  let lastError = ""
+  try {
+    for (const message of batch) {
+      try {
+        if (action === "read" || action === "unread") {
+          await setMessageSeen(message.id, action === "read")
+        } else {
+          const result = await $api(`/api/email/messages/${message.id}${action === "delete" ? "" : `/${action}`}`, {
+            method: action === "delete" ? "DELETE" : "POST",
+            ...(action === "move" ? { body: { mailbox: target } } : {}),
+          })
+          // Moving to the current folder is a no-op (for example, archiving archived mail).
+          if (action === "delete" || (result.destinationMailboxPath || result.mailboxPath) !== message.mailboxPath) {
+            mailboxes.value = mailboxes.value.map((mailbox) => {
+              const delta = mailbox.path === message.mailboxPath ? -1
+                  : mailbox.path === result.destinationMailboxPath ? 1 : 0
+              return delta ? {
+                ...mailbox,
+                exists: Math.max(0, Number(mailbox.exists || 0) + delta),
+                unseen: Math.max(0, Number(mailbox.unseen || 0) + (message.seen ? 0 : delta)),
+              } : mailbox
+            })
+            messages.value = messages.value.filter((item) => item.id !== message.id)
+            if (selectedMessage.value?.id === message.id) selectedMessage.value = null
+          }
+        }
+      } catch (err: any) {
+        failedIds.push(message.id)
+        lastError = err?.data?.error || err?.message || "Unbekannter Fehler"
+      }
+      bulkProgress.value++
+    }
+    checkedMessageIds.value = failedIds
+    const labels = { read: "als gelesen markiert", unread: "als ungelesen markiert", archive: "archiviert", delete: "gelöscht", move: "verschoben" }
+    toast.add({
+      title: `${batch.length - failedIds.length} von ${batch.length} E-Mails ${labels[action]}`,
+      description: failedIds.length ? `${failedIds.length} fehlgeschlagen und weiterhin ausgewählt. ${lastError}` : undefined,
+      color: failedIds.length ? "error" : "success",
+    })
+    if (!failedIds.length) bulkMoveTarget.value = ""
+  } finally {
+    bulkAction.value = ""
+  }
+}
+
 const moveMailboxOptions = computed(() =>
     mailboxes.value
         .filter((mailbox) => mailbox.path !== selectedMessage.value?.mailboxPath)
@@ -347,6 +434,8 @@ async function loadMessages(options: { syncIfEmpty?: boolean } = {}) {
   if (!selectedAccountId.value || !selectedMailboxPath.value) return
 
   loadingMessages.value = true
+  checkedMessageIds.value = []
+  bulkMoveTarget.value = ""
   selectedMessage.value = null
 
   try {
@@ -379,12 +468,14 @@ async function fetchMessages(mailboxPath: string) {
 }
 
 async function selectMailbox(mailbox: EmailMailbox) {
+  if (bulkAction.value) return
   selectedMailboxPath.value = mailbox.path
   expandMailboxAncestors(mailbox.path)
   await loadMessages({ syncIfEmpty: true })
 }
 
 async function selectMessage(message: EmailMessage) {
+  if (bulkAction.value) return
   loadingMessage.value = true
   try {
     selectedMessage.value = await $api(`/api/email/messages/${message.id}`)
@@ -416,6 +507,7 @@ function openComposer(mode: "reply" | "replyAll" | "forward") {
 function removeMessageFromCurrentList(messageId: string) {
   const currentIndex = messages.value.findIndex((message) => message.id === messageId)
   const wasSelected = selectedMessage.value?.id === messageId
+  checkedMessageIds.value = checkedMessageIds.value.filter((id) => id !== messageId)
   messages.value = messages.value.filter((message) => message.id !== messageId)
 
   if (!wasSelected) return
@@ -478,6 +570,7 @@ async function moveSelectedMessage() {
 }
 
 async function moveMessageToMailbox(messageId: string, mailboxPath: string, loadingKey = `move-${messageId}`) {
+  if (bulkAction.value) return
   const message = messages.value.find((item) => item.id === messageId)
   if (!message || message.mailboxPath === mailboxPath) return
 
@@ -524,7 +617,7 @@ async function moveMessageToMailbox(messageId: string, mailboxPath: string, load
 }
 
 function startMessageDrag(event: DragEvent, message: EmailMessage) {
-  if (!event.dataTransfer || actionLoading.value) {
+  if (!event.dataTransfer || actionLoading.value || bulkAction.value) {
     event.preventDefault()
     return
   }
@@ -703,6 +796,7 @@ onMounted(loadAccounts)
       <template #left>
         <UInput
             v-model="search"
+            :disabled="!!bulkAction"
             icon="i-heroicons-magnifying-glass"
             size="sm"
             class="w-72"
@@ -724,7 +818,7 @@ onMounted(loadAccounts)
             variant="soft"
             size="sm"
             :loading="syncing"
-            :disabled="!selectedAccountId"
+            :disabled="!selectedAccountId || !!bulkAction"
             @click="syncAccount"
         >
           Aktualisieren
@@ -739,6 +833,7 @@ onMounted(loadAccounts)
           <USelectMenu
               v-else-if="accounts.length"
               v-model="selectedAccountId"
+              :disabled="!!bulkAction"
               :items="accounts"
               label-key="displayName"
               value-key="id"
@@ -773,6 +868,7 @@ onMounted(loadAccounts)
           <button
               v-for="row in mailboxRows"
               :key="row.mailbox.id"
+              :disabled="!!bulkAction"
               class="flex w-full items-center gap-2 rounded-md px-3 py-2 text-left text-sm transition-colors"
               :class="[
                 selectedMailboxPath === row.mailbox.path ? 'bg-primary/10 text-primary' : 'hover:bg-(--ui-bg-muted)',
@@ -821,6 +917,32 @@ onMounted(loadAccounts)
           </div>
         </div>
 
+        <div v-if="filteredMessages.length || bulkAction" class="sticky top-0 z-10 space-y-3 border-b border-(--ui-border) bg-(--ui-bg) p-3">
+          <div class="flex items-center justify-between gap-2">
+            <UCheckbox
+                :model-value="allMessagesChecked ? true : checkedMessages.length ? 'indeterminate' : false"
+                :disabled="bulkDisabled"
+                label="Alle angezeigten auswählen"
+                @update:model-value="toggleAllMessages($event === true)"
+            />
+            <span class="text-xs text-dimmed" aria-live="polite">{{ bulkAction ? checkedMessageIds.length : checkedMessages.length }} ausgewählt</span>
+          </div>
+          <template v-if="checkedMessages.length">
+            <div class="flex flex-wrap gap-2">
+              <UButton size="xs" color="neutral" variant="soft" :disabled="bulkDisabled" @click="runBulkAction('read')">Gelesen</UButton>
+              <UButton size="xs" color="neutral" variant="soft" :disabled="bulkDisabled" @click="runBulkAction('unread')">Ungelesen</UButton>
+              <UButton size="xs" color="neutral" variant="soft" :disabled="bulkDisabled" @click="runBulkAction('archive')">Archivieren</UButton>
+              <UButton size="xs" color="error" variant="soft" :disabled="bulkDisabled" @click="runBulkAction('delete')">Löschen</UButton>
+              <UButton size="xs" color="neutral" variant="ghost" :disabled="bulkDisabled" @click="toggleAllMessages(false)">Auswahl aufheben</UButton>
+            </div>
+            <div class="flex gap-2">
+              <USelectMenu v-model="bulkMoveTarget" :items="bulkMoveOptions" value-key="value" label-key="label" placeholder="Verschieben nach" size="sm" class="min-w-0 flex-1" :disabled="bulkDisabled" />
+              <UButton size="sm" color="neutral" variant="soft" :disabled="bulkDisabled || !bulkMoveTarget" @click="runBulkAction('move')">Verschieben</UButton>
+            </div>
+          </template>
+          <p v-if="bulkAction" role="status" class="text-xs text-dimmed">{{ bulkProgress }} von {{ checkedMessageIds.length }} E-Mails bearbeitet …</p>
+        </div>
+
         <div v-if="loadingMessages" class="space-y-2 p-3">
           <USkeleton v-for="i in 8" :key="i" class="h-20" />
         </div>
@@ -831,10 +953,11 @@ onMounted(loadAccounts)
         />
 
         <div v-else class="divide-y divide-(--ui-border)">
-          <button
-              v-for="message in filteredMessages"
-              :key="message.id"
-              class="block w-full cursor-grab border-l-2 px-4 py-3 text-left transition-colors active:cursor-grabbing"
+          <div v-for="message in filteredMessages" :key="message.id" class="flex items-start" :class="checkedMessageIds.includes(message.id) ? 'bg-primary/5' : ''">
+            <UCheckbox class="ml-3 mt-4 shrink-0" :model-value="checkedMessageIds.includes(message.id)" :disabled="bulkDisabled" :aria-label="`E-Mail auswählen: ${message.subject || '(kein Betreff)'}`" @update:model-value="toggleMessageChecked(message.id, $event === true)" />
+            <button
+              :disabled="!!bulkAction"
+              class="block min-w-0 flex-1 cursor-grab border-l-2 px-4 py-3 text-left transition-colors active:cursor-grabbing"
               :class="[
                 selectedMessage?.id === message.id ? 'border-primary bg-primary/10' : 'border-transparent hover:bg-(--ui-bg-muted)',
                 draggedMessageId === message.id ? 'opacity-50' : '',
@@ -865,11 +988,12 @@ onMounted(loadAccounts)
                 {{ message.preview || 'Keine Vorschau' }}
               </p>
             </div>
-          </button>
+            </button>
+          </div>
         </div>
       </section>
 
-      <main class="min-w-0 flex-1 overflow-y-auto bg-(--ui-bg)">
+      <main :inert="!!bulkAction" class="min-w-0 flex-1 overflow-y-auto bg-(--ui-bg)">
         <div v-if="loadingMessage" class="space-y-4 p-6">
           <USkeleton class="h-8 w-2/3" />
           <USkeleton class="h-5 w-1/3" />