refactor(ui): extract mixed channel warning handler

frontend/src/components/account/CreateAccountModal.vue

@@ -1964,6 +1964,7 @@ import {
 import { useOpenAIOAuth } from '@/composables/useOpenAIOAuth'
 import { useGeminiOAuth } from '@/composables/useGeminiOAuth'
 import { useAntigravityOAuth } from '@/composables/useAntigravityOAuth'
+import { useMixedChannelWarning } from '@/composables/useMixedChannelWarning'
 import type { Proxy, AdminGroup, AccountPlatform, AccountType } from '@/types'
 import BaseDialog from '@/components/common/BaseDialog.vue'
 import ConfirmDialog from '@/components/common/ConfirmDialog.vue'
@@ -2102,10 +2103,9 @@ const tempUnschedRules = ref<TempUnschedRuleForm[]>([])
 const geminiOAuthType = ref<'code_assist' | 'google_one' | 'ai_studio'>('google_one')
 const geminiAIStudioOAuthEnabled = ref(false)
 
-// Mixed channel warning dialog state
-const showMixedChannelWarning = ref(false)
-const mixedChannelWarningDetails = ref<{ groupName: string; currentPlatform: string; otherPlatform: string } | null>(null)
-const pendingCreatePayload = ref<any>(null)
+const mixedChannelWarning = useMixedChannelWarning()
+const showMixedChannelWarning = mixedChannelWarning.show
+const mixedChannelWarningDetails = mixedChannelWarning.details
 const showAdvancedOAuth = ref(false)
 const showGeminiHelpDialog = ref(false)
 
@@ -2583,6 +2583,7 @@ const resetForm = () => {
   geminiOAuth.resetState()
   antigravityOAuth.resetState()
   oauthFlowRef.value?.reset()
+  mixedChannelWarning.cancel()
 }
 
 const handleClose = () => {
@@ -2593,24 +2594,16 @@ const handleClose = () => {
 const doCreateAccount = async (payload: any) => {
   submitting.value = true
   try {
-    await adminAPI.accounts.create(payload)
-    appStore.showSuccess(t('admin.accounts.accountCreated'))
-    emit('created')
-    handleClose()
-  } catch (error: any) {
-    // Handle 409 mixed_channel_warning - show confirmation dialog
-    if (error.response?.status === 409 && error.response?.data?.error === 'mixed_channel_warning') {
-      const details = error.response.data.details || {}
-      mixedChannelWarningDetails.value = {
-        groupName: details.group_name || 'Unknown',
-        currentPlatform: details.current_platform || 'Unknown',
-        otherPlatform: details.other_platform || 'Unknown'
+    await mixedChannelWarning.tryRequest(payload, (p) => adminAPI.accounts.create(p), {
+      onSuccess: () => {
+        appStore.showSuccess(t('admin.accounts.accountCreated'))
+        emit('created')
+        handleClose()
+      },
+      onError: (error: any) => {
+        appStore.showError(error.response?.data?.detail || t('admin.accounts.failedToCreate'))
       }
-      pendingCreatePayload.value = payload
-      showMixedChannelWarning.value = true
-    } else {
-      appStore.showError(error.response?.data?.detail || t('admin.accounts.failedToCreate'))
-    }
+    })
   } finally {
     submitting.value = false
   }
@@ -2618,28 +2611,16 @@ const doCreateAccount = async (payload: any) => {
 
 // Handle mixed channel warning confirmation
 const handleMixedChannelConfirm = async () => {
-  showMixedChannelWarning.value = false
-  if (pendingCreatePayload.value) {
-    pendingCreatePayload.value.confirm_mixed_channel_risk = true
-    submitting.value = true
-    try {
-      await adminAPI.accounts.create(pendingCreatePayload.value)
-      appStore.showSuccess(t('admin.accounts.accountCreated'))
-      emit('created')
-      handleClose()
-    } catch (error: any) {
-      appStore.showError(error.response?.data?.detail || t('admin.accounts.failedToCreate'))
-    } finally {
-      submitting.value = false
-      pendingCreatePayload.value = null
-    }
+  submitting.value = true
+  try {
+    await mixedChannelWarning.confirm()
+  } finally {
+    submitting.value = false
   }
 }
 
 const handleMixedChannelCancel = () => {
-  showMixedChannelWarning.value = false
-  pendingCreatePayload.value = null
-  mixedChannelWarningDetails.value = null
+  mixedChannelWarning.cancel()
 }
 
 const handleSubmit = async () => {
@@ -2795,7 +2776,7 @@ const createAccountAndFinish = async (
   if (!applyTempUnschedConfig(credentials)) {
     return
   }
-  const payload: any = {
+  await doCreateAccount({
     name: form.name,
     notes: form.notes,
     platform,
@@ -2809,31 +2790,7 @@ const createAccountAndFinish = async (
     group_ids: form.group_ids,
     expires_at: form.expires_at,
     auto_pause_on_expired: autoPauseOnExpired.value
-  }
-
-  try {
-    await adminAPI.accounts.create(payload)
-  } catch (error: any) {
-    // Handle 409 mixed_channel_warning - show confirmation dialog
-    // Note: upstream Antigravity create path uses createAccountAndFinish directly, so mixed warning
-    // must be handled here as well (otherwise user only sees a generic "failed" toast).
-    if (error.response?.status === 409 && error.response?.data?.error === 'mixed_channel_warning') {
-      const details = error.response.data.details || {}
-      mixedChannelWarningDetails.value = {
-        groupName: details.group_name || 'Unknown',
-        currentPlatform: details.current_platform || 'Unknown',
-        otherPlatform: details.other_platform || 'Unknown'
-      }
-      pendingCreatePayload.value = payload
-      showMixedChannelWarning.value = true
-      return
-    }
-    throw error
-  }
-
-  appStore.showSuccess(t('admin.accounts.accountCreated'))
-  emit('created')
-  handleClose()
+  })
 }
 
 // OpenAI OAuth 授权码兑换

frontend/src/components/account/EditAccountModal.vue

@@ -994,6 +994,7 @@ import ProxySelector from '@/components/common/ProxySelector.vue'
 import GroupSelector from '@/components/common/GroupSelector.vue'
 import ModelWhitelistSelector from '@/components/account/ModelWhitelistSelector.vue'
 import { formatDateTimeLocalInput, parseDateTimeLocalInput } from '@/utils/format'
+import { useMixedChannelWarning } from '@/composables/useMixedChannelWarning'
 import {
   getPresetMappingsByPlatform,
   commonErrorCodes,
@@ -1060,10 +1061,9 @@ const antigravityModelMappings = ref<ModelMapping[]>([])
 const tempUnschedEnabled = ref(false)
 const tempUnschedRules = ref<TempUnschedRuleForm[]>([])
 
-// Mixed channel warning dialog state
-const showMixedChannelWarning = ref(false)
-const mixedChannelWarningDetails = ref<{ groupName: string; currentPlatform: string; otherPlatform: string } | null>(null)
-const pendingUpdatePayload = ref<Record<string, unknown> | null>(null)
+const mixedChannelWarning = useMixedChannelWarning()
+const showMixedChannelWarning = mixedChannelWarning.show
+const mixedChannelWarningDetails = mixedChannelWarning.details
 
 // Quota control state (Anthropic OAuth/SetupToken only)
 const windowCostEnabled = ref(false)
@@ -1525,11 +1525,13 @@ const parseDateTimeLocal = parseDateTimeLocalInput
 
 // Methods
 const handleClose = () => {
+  mixedChannelWarning.cancel()
   emit('close')
 }
 
 const handleSubmit = async () => {
   if (!props.account) return
+  const accountID = props.account.id
 
   submitting.value = true
   const updatePayload: Record<string, unknown> = { ...form }
@@ -1698,24 +1700,18 @@ const handleSubmit = async () => {
       updatePayload.extra = newExtra
     }
 
-    await adminAPI.accounts.update(props.account.id, updatePayload)
-    appStore.showSuccess(t('admin.accounts.accountUpdated'))
-    emit('updated')
-    handleClose()
-  } catch (error: any) {
-    // Handle 409 mixed_channel_warning - show confirmation dialog
-    if (error.response?.status === 409 && error.response?.data?.error === 'mixed_channel_warning') {
-      const details = error.response.data.details || {}
-      mixedChannelWarningDetails.value = {
-        groupName: details.group_name || 'Unknown',
-        currentPlatform: details.current_platform || 'Unknown',
-        otherPlatform: details.other_platform || 'Unknown'
+    await mixedChannelWarning.tryRequest(updatePayload, (p) => adminAPI.accounts.update(accountID, p), {
+      onSuccess: () => {
+        appStore.showSuccess(t('admin.accounts.accountUpdated'))
+        emit('updated')
+        handleClose()
+      },
+      onError: (error: any) => {
+        appStore.showError(error.response?.data?.message || error.response?.data?.detail || t('admin.accounts.failedToUpdate'))
       }
-      pendingUpdatePayload.value = updatePayload
-      showMixedChannelWarning.value = true
-    } else {
-      appStore.showError(error.response?.data?.message || error.response?.data?.detail || t('admin.accounts.failedToUpdate'))
-    }
+    })
+  } catch (error: any) {
+    appStore.showError(error.response?.data?.message || error.response?.data?.detail || t('admin.accounts.failedToUpdate'))
   } finally {
     submitting.value = false
   }
@@ -1723,27 +1719,15 @@ const handleSubmit = async () => {
 
 // Handle mixed channel warning confirmation
 const handleMixedChannelConfirm = async () => {
-  showMixedChannelWarning.value = false
-  if (pendingUpdatePayload.value && props.account) {
-    pendingUpdatePayload.value.confirm_mixed_channel_risk = true
-    submitting.value = true
-    try {
-      await adminAPI.accounts.update(props.account.id, pendingUpdatePayload.value)
-      appStore.showSuccess(t('admin.accounts.accountUpdated'))
-      emit('updated')
-      handleClose()
-    } catch (error: any) {
-      appStore.showError(error.response?.data?.message || error.response?.data?.detail || t('admin.accounts.failedToUpdate'))
-    } finally {
-      submitting.value = false
-      pendingUpdatePayload.value = null
-    }
+  submitting.value = true
+  try {
+    await mixedChannelWarning.confirm()
+  } finally {
+    submitting.value = false
   }
 }
 
 const handleMixedChannelCancel = () => {
-  showMixedChannelWarning.value = false
-  pendingUpdatePayload.value = null
-  mixedChannelWarningDetails.value = null
+  mixedChannelWarning.cancel()
 }
 </script>

frontend/src/composables/useMixedChannelWarning.ts

@@ -0,0 +1,107 @@
+import { ref } from 'vue'
+
+export interface MixedChannelWarningDetails {
+  groupName: string
+  currentPlatform: string
+  otherPlatform: string
+}
+
+function isMixedChannelWarningError(error: any): boolean {
+  return error?.response?.status === 409 && error?.response?.data?.error === 'mixed_channel_warning'
+}
+
+function extractMixedChannelWarningDetails(error: any): MixedChannelWarningDetails {
+  const details = error?.response?.data?.details || {}
+  return {
+    groupName: details.group_name || 'Unknown',
+    currentPlatform: details.current_platform || 'Unknown',
+    otherPlatform: details.other_platform || 'Unknown'
+  }
+}
+
+export function useMixedChannelWarning() {
+  const show = ref(false)
+  const details = ref<MixedChannelWarningDetails | null>(null)
+
+  const pendingPayload = ref<any | null>(null)
+  const pendingRequest = ref<((payload: any) => Promise<any>) | null>(null)
+  const pendingOnSuccess = ref<(() => void) | null>(null)
+  const pendingOnError = ref<((error: any) => void) | null>(null)
+
+  const clearPending = () => {
+    pendingPayload.value = null
+    pendingRequest.value = null
+    pendingOnSuccess.value = null
+    pendingOnError.value = null
+    details.value = null
+  }
+
+  const tryRequest = async (
+    payload: any,
+    request: (payload: any) => Promise<any>,
+    opts?: {
+      onSuccess?: () => void
+      onError?: (error: any) => void
+    }
+  ): Promise<boolean> => {
+    try {
+      await request(payload)
+      opts?.onSuccess?.()
+      return true
+    } catch (error: any) {
+      if (isMixedChannelWarningError(error)) {
+        details.value = extractMixedChannelWarningDetails(error)
+        pendingPayload.value = payload
+        pendingRequest.value = request
+        pendingOnSuccess.value = opts?.onSuccess || null
+        pendingOnError.value = opts?.onError || null
+        show.value = true
+        return false
+      }
+
+      if (opts?.onError) {
+        opts.onError(error)
+        return false
+      }
+      throw error
+    }
+  }
+
+  const confirm = async (): Promise<boolean> => {
+    show.value = false
+    if (!pendingPayload.value || !pendingRequest.value) {
+      clearPending()
+      return false
+    }
+
+    pendingPayload.value.confirm_mixed_channel_risk = true
+
+    try {
+      await pendingRequest.value(pendingPayload.value)
+      pendingOnSuccess.value?.()
+      return true
+    } catch (error: any) {
+      if (pendingOnError.value) {
+        pendingOnError.value(error)
+        return false
+      }
+      throw error
+    } finally {
+      clearPending()
+    }
+  }
+
+  const cancel = () => {
+    show.value = false
+    clearPending()
+  }
+
+  return {
+    show,
+    details,
+    tryRequest,
+    confirm,
+    cancel
+  }
+}
+