feat: 添加AI翻译功能

src/views/demo/translate/index.vue

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+<script setup>
+import { useClipboard, useStorage } from '@vueuse/core'
+import {
+  API_BASE_URL_OPTIONS,
+  DEFAULT_SETTINGS,
+  EXPERIENCE_KEY_MAX_TEXT_LENGTH,
+  isExperienceApiKey,
+  isSettingsReady,
+  MODEL_OPTIONS,
+  STORE_KEY,
+  translateText,
+} from './translate'
+
+defineOptions({ name: 'DemoTranslate' })
+
+const { copy, copied } = useClipboard()
+
+const sourceText = ref('')
+const resultText = ref('')
+const errorText = ref('')
+const loading = ref(false)
+const showSettings = ref(false)
+
+const settings = useStorage(STORE_KEY, { ...DEFAULT_SETTINGS })
+const draftSettings = reactive({ ...settings.value })
+
+const canTranslate = computed(() => Boolean(sourceText.value.trim()) && !loading.value)
+const apiReady = computed(() => isSettingsReady(settings.value))
+const isUsingExperienceKey = computed(() => isExperienceApiKey(settings.value.apiKey))
+const isDraftExperienceKey = computed(() => isExperienceApiKey(draftSettings.apiKey))
+const sourceLength = computed(() => sourceText.value.length)
+const sourceLimitText = computed(() => `${sourceLength.value}/${EXPERIENCE_KEY_MAX_TEXT_LENGTH}`)
+const footerText = computed(() => {
+  if (!apiReady.value)
+    return '请先完善模型配置'
+  if (isUsingExperienceKey.value)
+    return '当前是体验 Key，所有人每天共享使用约 1000 次翻译'
+  return '已就绪'
+})
+
+watch(sourceText, (value) => {
+  if (isUsingExperienceKey.value && value.length > EXPERIENCE_KEY_MAX_TEXT_LENGTH)
+    sourceText.value = value.slice(0, EXPERIENCE_KEY_MAX_TEXT_LENGTH)
+})
+
+watch(copied, (value) => {
+  if (value)
+    $message.success('已复制译文')
+})
+
+onMounted(() => {
+  if (!apiReady.value)
+    showSettings.value = true
+})
+
+function syncDraftSettings() {
+  Object.assign(draftSettings, settings.value)
+}
+
+function openSettings() {
+  syncDraftSettings()
+  showSettings.value = true
+}
+
+function saveSettings() {
+  if (!isSettingsReady(draftSettings))
+    return
+
+  settings.value = {
+    apiKey: draftSettings.apiKey.trim(),
+    apiBaseUrl: draftSettings.apiBaseUrl.trim().replace(/\/+$/, ''),
+    model: draftSettings.model.trim(),
+  }
+  showSettings.value = false
+  errorText.value = ''
+  $message.success('配置已保存')
+}
+
+function selectModel(model) {
+  draftSettings.model = model
+}
+
+async function handleTranslate() {
+  const text = sourceText.value.trim()
+  if (!text || loading.value)
+    return
+
+  resultText.value = ''
+  errorText.value = ''
+
+  if (!apiReady.value) {
+    syncDraftSettings()
+    showSettings.value = true
+    errorText.value = '请先保存模型配置'
+    return
+  }
+
+  loading.value = true
+  try {
+    resultText.value = await translateText(text, settings.value)
+  }
+  catch (error) {
+    errorText.value = error?.message || '翻译失败'
+  }
+  finally {
+    loading.value = false
+  }
+}
+
+async function handleCopy() {
+  if (!resultText.value)
+    return
+  await copy(resultText.value)
+}
+</script>
+
+<template>
+  <CommonPage>
+    <div class="translate-page">
+      <div class="translate-toolbar">
+        <div class="min-w-0 flex items-center gap-12">
+          <div class="tool-icon">
+            <i class="i-fe:globe" />
+          </div>
+          <div class="min-w-0">
+            <div class="flex items-center gap-10">
+              <h3 class="m-0 text-18 font-600">
+                AI 翻译
+              </h3>
+              <n-tag size="small" round :type="apiReady ? 'success' : 'warning'">
+                {{ settings.model || '未配置模型' }}
+              </n-tag>
+            </div>
+            <div class="mt-4 truncate text-13 text-#7a807f">
+              {{ footerText }}
+            </div>
+          </div>
+        </div>
+
+        <div class="flex items-center gap-10">
+          <n-button quaternary circle title="模型配置" @click="openSettings">
+            <template #icon>
+              <i class="i-fe:settings" />
+            </template>
+          </n-button>
+        </div>
+      </div>
+
+      <div class="translate-workspace">
+        <section class="translate-panel">
+          <div class="panel-head">
+            <div>
+              <div class="text-14 font-600">
+                原文
+              </div>
+              <div class="mt-4 text-12 text-#9aa0a0">
+                Enter 翻译
+              </div>
+            </div>
+            <div class="flex items-center gap-10">
+              <n-tag v-if="isUsingExperienceKey" size="small" :bordered="false">
+                {{ sourceLimitText }}
+              </n-tag>
+            </div>
+          </div>
+
+          <div class="source-input-wrap">
+            <n-input
+              v-model:value="sourceText"
+              class="translate-input"
+              type="textarea"
+              :maxlength="isUsingExperienceKey ? EXPERIENCE_KEY_MAX_TEXT_LENGTH : undefined"
+              :placeholder="isUsingExperienceKey ? `请输入要翻译的内容（体验 Key 最多 ${EXPERIENCE_KEY_MAX_TEXT_LENGTH} 字符）` : '请输入要翻译的内容'"
+              @keydown.enter.exact.prevent="handleTranslate"
+            />
+            <n-button
+              class="translate-action"
+              type="primary"
+              :loading="loading"
+              :disabled="!canTranslate"
+              @click="handleTranslate"
+            >
+              <template #icon>
+                <i class="i-fe:send" />
+              </template>
+              翻译
+            </n-button>
+          </div>
+        </section>
+
+        <section class="translate-panel">
+          <div class="panel-head">
+            <div>
+              <div class="text-14 font-600">
+                译文
+              </div>
+              <div class="mt-4 text-12 text-#9aa0a0">
+                自动识别中英方向
+              </div>
+            </div>
+            <n-button quaternary circle :disabled="!resultText" title="复制译文" @click="handleCopy">
+              <template #icon>
+                <i :class="copied ? 'i-fe:check' : 'i-fe:copy'" />
+              </template>
+            </n-button>
+          </div>
+
+          <div class="result-box">
+            <div v-if="errorText" class="result-error">
+              <i class="i-fe:alert-circle text-22" />
+              <span>{{ errorText }}</span>
+            </div>
+            <span v-else-if="resultText" class="whitespace-pre-wrap break-words">{{ resultText }}</span>
+            <div v-else class="result-empty">
+              <i class="i-fe:message-square text-34" />
+              <span>翻译结果会显示在这里</span>
+            </div>
+          </div>
+        </section>
+      </div>
+    </div>
+
+    <n-drawer v-model:show="showSettings" :width="420" placement="right">
+      <n-drawer-content title="模型配置" closable>
+        <div class="flex flex-col gap-16">
+          <n-alert v-if="isDraftExperienceKey" type="warning" :show-icon="false">
+            当前是体验 Key，所有人每天共享使用约 1000 次翻译，单次最多支持 {{ EXPERIENCE_KEY_MAX_TEXT_LENGTH }} 字符。
+          </n-alert>
+
+          <div>
+            <div class="mb-8 text-13 text-#5f6665">
+              API Key
+            </div>
+            <n-input
+              v-model:value="draftSettings.apiKey"
+              type="password"
+              show-password-on="click"
+              placeholder="sk-..."
+            />
+          </div>
+
+          <div>
+            <div class="mb-8 text-13 text-#5f6665">
+              API Base URL
+            </div>
+            <n-auto-complete
+              v-model:value="draftSettings.apiBaseUrl"
+              :options="API_BASE_URL_OPTIONS.filter(item => item.includes(draftSettings.apiBaseUrl)).map(value => ({ label: value, value }))"
+              :get-show="() => true"
+              placeholder="例如：https://runapi.co/v1"
+            />
+          </div>
+
+          <div>
+            <div class="mb-8 text-13 text-#5f6665">
+              Model
+            </div>
+            <n-auto-complete
+              v-model:value="draftSettings.model"
+              :options="MODEL_OPTIONS.filter(item => item.includes(draftSettings.model)).map(value => ({ label: value, value }))"
+              :get-show="() => true"
+              placeholder="例如：gpt-5.4-mini"
+            />
+            <div class="mt-10 flex flex-wrap gap-8">
+              <n-tag
+                v-for="model in MODEL_OPTIONS"
+                :key="model"
+                class="cursor-pointer"
+                size="small"
+                :type="draftSettings.model === model ? 'primary' : 'default'"
+                round
+                @click="selectModel(model)"
+              >
+                {{ model }}
+              </n-tag>
+            </div>
+          </div>
+
+          <div class="flex justify-end gap-10">
+            <n-button @click="showSettings = false">
+              取消
+            </n-button>
+            <n-button type="primary" :disabled="!isSettingsReady(draftSettings)" @click="saveSettings">
+              保存配置
+            </n-button>
+          </div>
+        </div>
+      </n-drawer-content>
+    </n-drawer>
+  </CommonPage>
+</template>
+
+<style scoped>
+.translate-page {
+  height: 100%;
+  min-height: 0;
+  display: grid;
+  grid-template-rows: auto minmax(0, 1fr);
+  gap: 16px;
+}
+
+.translate-toolbar {
+  min-height: 70px;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 16px;
+  padding: 0 4px 16px;
+  border-bottom: 1px solid rgba(239, 239, 245, 0.9);
+}
+
+.tool-icon {
+  width: 42px;
+  height: 42px;
+  display: grid;
+  place-items: center;
+  flex: none;
+  border-radius: 8px;
+  color: rgb(var(--primary-color));
+  background: rgba(var(--primary-color), 0.09);
+  font-size: 20px;
+}
+
+.translate-workspace {
+  min-height: 0;
+  display: grid;
+  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
+  gap: 16px;
+}
+
+.translate-panel {
+  min-height: 0;
+  display: grid;
+  grid-template-rows: auto minmax(0, 1fr);
+  border: 1px solid #efeff5;
+  border-radius: 8px;
+  overflow: hidden;
+  background: #fff;
+}
+
+.panel-head {
+  min-height: 68px;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 12px;
+  padding: 14px 16px;
+  border-bottom: 1px solid #f1f1f4;
+  background: #fbfcfc;
+}
+
+.translate-input {
+  height: 100%;
+}
+
+.source-input-wrap {
+  position: relative;
+  min-height: 0;
+}
+
+.translate-input :deep(.n-input),
+.translate-input :deep(.n-input-wrapper),
+.translate-input :deep(.n-input__textarea),
+.translate-input :deep(.n-input__textarea-el) {
+  height: 100%;
+  resize: none;
+}
+
+.translate-input :deep(textarea),
+.translate-input :deep(.n-input__textarea-el) {
+  resize: none !important;
+}
+
+.translate-input :deep(.n-input) {
+  border-radius: 0;
+}
+
+.translate-input :deep(.n-input__textarea-el) {
+  padding-bottom: 68px;
+}
+
+.translate-input :deep(.n-input__border),
+.translate-input :deep(.n-input__state-border) {
+  display: none;
+}
+
+.translate-action {
+  position: absolute;
+  right: 16px;
+  bottom: 16px;
+  z-index: 1;
+}
+
+.result-box {
+  min-height: 0;
+  overflow: auto;
+  padding: 18px;
+  color: #1f2322;
+  font-size: 15px;
+  line-height: 1.8;
+  background: #fff;
+}
+
+.result-empty {
+  height: 100%;
+  min-height: 220px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  flex-direction: column;
+  gap: 10px;
+  color: #a0a5a4;
+}
+
+.result-error {
+  min-height: 220px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 10px;
+  color: #d03050;
+  font-size: 14px;
+}
+
+@media (max-width: 960px) {
+  .translate-toolbar {
+    align-items: flex-start;
+    flex-direction: column;
+  }
+
+  .translate-workspace {
+    grid-template-columns: 1fr;
+  }
+}
+</style>

src/views/demo/translate/translate.js

@@ -0,0 +1,122 @@
+export const STORE_KEY = 'demo-translate-settings'
+
+export const API_BASE_URL_OPTIONS = [
+  'https://runapi.co/v1',
+]
+
+export const MODEL_OPTIONS = [
+  'gpt-5.4-mini',
+  'gpt-5.2',
+  'gpt-5.4',
+  'gpt-5.5',
+  'deepseek-v4-flash',
+  'deepseek-v4-pro',
+]
+
+export const DEFAULT_SETTINGS = {
+  apiKey: 'sk-17UVTOjYEB3M9Erg32yGdEhMVFKEaALuIkjy1CkGrCUdiQqJ',
+  apiBaseUrl: API_BASE_URL_OPTIONS[0],
+  model: MODEL_OPTIONS[0],
+}
+
+export const EXPERIENCE_KEY_MAX_TEXT_LENGTH = 100
+
+const TRANSLATION_RULES = 'Translate directly. Return only the translation. Preserve formatting, markdown, code, URLs, numbers, placeholders, and line breaks.'
+
+export function isSettingsReady(target) {
+  return Boolean(target.apiKey?.trim() && target.apiBaseUrl?.trim() && target.model?.trim())
+}
+
+export function isExperienceApiKey(apiKey) {
+  return apiKey?.trim() === DEFAULT_SETTINGS.apiKey
+}
+
+export function validateTranslateText(text, settings) {
+  if (isExperienceApiKey(settings.apiKey) && text.length > EXPERIENCE_KEY_MAX_TEXT_LENGTH)
+    throw new Error(`体验 Key 最多支持 ${EXPERIENCE_KEY_MAX_TEXT_LENGTH} 字符`)
+}
+
+function countMatches(text, pattern) {
+  return text.match(pattern)?.length || 0
+}
+
+function detectSourceLanguage(text) {
+  const cjkCount = countMatches(text, /[\u3400-\u9FFF]/g)
+  const latinCount = countMatches(text, /[A-Z]/gi)
+
+  if (!cjkCount && !latinCount)
+    return 'auto'
+  if (!cjkCount)
+    return 'en'
+  if (!latinCount)
+    return 'zh'
+
+  const cjkRatio = cjkCount / (cjkCount + latinCount)
+  if (cjkRatio >= 0.2)
+    return 'zh'
+  if (cjkRatio <= 0.08)
+    return 'en'
+
+  const firstScript = text.match(/[\u3400-\u9FFFA-Z]/i)?.[0]
+  return firstScript && /[\u3400-\u9FFF]/.test(firstScript) ? 'zh' : 'en'
+}
+
+function createSystemPrompt(sourceLanguage) {
+  if (sourceLanguage === 'zh')
+    return `${TRANSLATION_RULES} Target: natural English.`
+  if (sourceLanguage === 'en')
+    return `${TRANSLATION_RULES} Target: natural Simplified Chinese.`
+  return `${TRANSLATION_RULES} Target: Simplified Chinese.`
+}
+
+function createFastModelOptions(model) {
+  const normalized = model.trim().toLowerCase()
+  if (!normalized.startsWith('gpt-5'))
+    return {}
+
+  return {
+    reasoning_effort: /^gpt-5\.[1-9]\d*/.test(normalized) ? 'none' : 'low',
+    verbosity: 'low',
+  }
+}
+
+export async function translateText(text, settings) {
+  validateTranslateText(text, settings)
+
+  const baseUrl = settings.apiBaseUrl.trim().replace(/\/+$/, '')
+  const model = settings.model.trim() || DEFAULT_SETTINGS.model
+  const sourceLanguage = detectSourceLanguage(text)
+
+  const response = await fetch(`${baseUrl}/chat/completions`, {
+    method: 'POST',
+    headers: {
+      'Content-Type': 'application/json',
+      'Authorization': `Bearer ${settings.apiKey.trim()}`,
+    },
+    body: JSON.stringify({
+      model,
+      temperature: 0,
+      ...createFastModelOptions(model),
+      messages: [
+        {
+          role: 'system',
+          content: createSystemPrompt(sourceLanguage),
+        },
+        {
+          role: 'user',
+          content: text,
+        },
+      ],
+    }),
+  })
+
+  const data = await response.json().catch(() => ({}))
+  if (!response.ok)
+    throw new Error(data?.error?.message || `请求失败：${response.status}`)
+
+  const result = data?.choices?.[0]?.message?.content?.trim() || ''
+  if (!result)
+    throw new Error('未收到翻译结果')
+
+  return result
+}