feat: 增加提供商设置

dashboard/src/components/AppSidebar.vue

@@ -42,6 +42,7 @@ const navItems = [
   { path: '/', icon: '🏠', label: '首页' },
   { path: '/conversations', icon: '💬', label: '会话' },
   { path: '/tools', icon: '🛠️', label: '工具' },
+  { path: '/settings', icon: '⚙️', label: '设置' },
   { path: '/about', icon: 'ℹ️', label: '关于' }
 ]
 

dashboard/src/router/index.js

@@ -14,6 +14,12 @@ const routes = [
     component: () => import('../views/AboutView.vue'),
     meta: { requiresAuth: true }
   },
+  {
+    path: '/settings',
+    name: 'Settings',
+    component: () => import('../views/SettingsView.vue'),
+    meta: { requiresAuth: true }
+  },
   {
     path: '/auth',
     name: 'Auth',
@@ -26,6 +32,12 @@ const routes = [
     component: () => import('../views/ConversationsView.vue'),
     meta: { requiresAuth: true }
   },
+  {
+    path: '/conversations/:id',
+    name: 'ConversationDetail',
+    component: () => import('../views/ConversationDetailView.vue'),
+    meta: { requiresAuth: true }
+  },
   {
     path: '/tools',
     name: 'Tools',

dashboard/src/services/api.js

@@ -75,7 +75,7 @@ export const conversationsAPI = {
 
 export const messagesAPI = {
   // 获取消息列表
-  list: (conversationId, params) => api.get(`/messages/${conversationId}`, { params }),
+  list: (conversationId, params) => api.get('/messages/', { params: { conversation_id: conversationId, ...params } }),
   
   // 发送消息（非流式）
   send: (data) => api.post('/messages/', data),
@@ -110,5 +110,27 @@ export const toolsAPI = {
   execute: (name, data) => api.post(`/tools/${name}/execute`, data)
 }
 
+// ============ LLM Provider 接口 ============
+
+export const providersAPI = {
+  // 获取提供商列表
+  list: () => api.get('/providers/'),
+  
+  // 创建提供商
+  create: (data) => api.post('/providers/', data),
+  
+  // 获取提供商详情
+  get: (id) => api.get(`/providers/${id}`),
+  
+  // 更新提供商
+  update: (id, data) => api.put(`/providers/${id}`, data),
+  
+  // 删除提供商
+  delete: (id) => api.delete(`/providers/${id}`),
+  
+  // 测试连接
+  test: (id) => api.post(`/providers/${id}/test`)
+}
+
 // 默认导出
 export default api

dashboard/src/views/ConversationDetailView.vue

@@ -0,0 +1,175 @@
+<template>
+  <div class="chat-view">
+    <div class="chat-container">
+      <div class="messages" ref="messagesContainer">
+        <div v-if="loading" class="loading">加载中...</div>
+        <div v-else-if="!messages.length" class="empty">
+          <p>开始对话吧！</p>
+        </div>
+        <div v-for="msg in messages" :key="msg.id" :class="['message', msg.role]">
+          <div class="message-avatar">{{ msg.role === 'user' ? '👤' : '🤖' }}</div>
+          <div class="message-content">
+            <div class="message-text">{{ msg.content }}</div>
+            <div class="message-time">{{ formatTime(msg.created_at) }}</div>
+          </div>
+        </div>
+        <div v-if="streaming" class="message assistant streaming">
+          <div class="message-avatar">🤖</div>
+          <div class="message-content">
+            <div class="message-text">{{ streamContent }}<span class="cursor">▋</span></div>
+          </div>
+        </div>
+      </div>
+
+      <div class="input-area">
+        <textarea 
+          v-model="inputMessage" 
+          @keydown.enter.exact.prevent="sendMessage"
+          placeholder="输入消息..."
+          rows="1"
+        ></textarea>
+        <button @click="sendMessage" :disabled="!inputMessage.trim() || sending" class="send-btn">
+          {{ sending ? '发送中...' : '发送' }}
+        </button>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup>
+import { ref, onMounted, nextTick } from 'vue'
+import { useRoute } from 'vue-router'
+import { conversationsAPI, messagesAPI } from '../services/api.js'
+
+const route = useRoute()
+const messages = ref([])
+const inputMessage = ref('')
+const loading = ref(true)
+const sending = ref(false)
+const streaming = ref(false)
+const streamContent = ref('')
+const messagesContainer = ref(null)
+const conversationId = ref(route.params.id)
+
+const loadMessages = async () => {
+  loading.value = true
+  try {
+    const res = await messagesAPI.list(conversationId.value)
+    if (res.success) {
+      messages.value = res.data.messages || []
+    }
+  } catch (e) {
+    console.error(e)
+  } finally {
+    loading.value = false
+    scrollToBottom()
+  }
+}
+
+const sendMessage = async () => {
+  if (!inputMessage.value.trim() || sending.value) return
+  
+  const content = inputMessage.value.trim()
+  inputMessage.value = ''
+  sending.value = true
+  
+  // 添加用户消息
+  messages.value.push({
+    id: Date.now(),
+    role: 'user',
+    content: content,
+    created_at: new Date().toISOString()
+  })
+  scrollToBottom()
+  
+  try {
+    streaming.value = true
+    streamContent.value = ''
+    
+    const response = await messagesAPI.sendStream({
+      conversation_id: conversationId.value,
+      content: content,
+      tools_enabled: true
+    })
+    
+    const reader = response.body.getReader()
+    const decoder = new TextDecoder()
+    
+    while (true) {
+      const { done, value } = await reader.read()
+      if (done) break
+      
+      const chunk = decoder.decode(value)
+      const lines = chunk.split('\n')
+      
+      for (const line of lines) {
+        if (line.startsWith('data: ')) {
+          const data = line.slice(6)
+          if (data === '[DONE]') continue
+          
+          try {
+            const parsed = JSON.parse(data)
+            if (parsed.type === 'content_delta') {
+              streamContent.value += parsed.content
+            }
+          } catch (e) {}
+        }
+      }
+    }
+    
+    // 添加助手消息
+    if (streamContent.value) {
+      messages.value.push({
+        id: Date.now() + 1,
+        role: 'assistant',
+        content: streamContent.value,
+        created_at: new Date().toISOString()
+      })
+    }
+  } catch (e) {
+    console.error('发送失败:', e)
+    alert('发送失败: ' + e.message)
+  } finally {
+    sending.value = false
+    streaming.value = false
+    scrollToBottom()
+  }
+}
+
+const scrollToBottom = () => {
+  nextTick(() => {
+    if (messagesContainer.value) {
+      messagesContainer.value.scrollTop = messagesContainer.value.scrollHeight
+    }
+  })
+}
+
+const formatTime = (time) => {
+  if (!time) return ''
+  return new Date(time).toLocaleTimeString('zh-CN', { hour: '2-digit', minute: '2-digit' })
+}
+
+onMounted(loadMessages)
+</script>
+
+<style scoped>
+.chat-view { height: calc(100vh - 70px); display: flex; flex-direction: column; }
+.chat-container { flex: 1; display: flex; flex-direction: column; max-width: 900px; margin: 0 auto; width: 100%; }
+.messages { flex: 1; overflow-y: auto; padding: 1rem; }
+.loading, .empty { text-align: center; padding: 4rem; color: var(--text); }
+.message { display: flex; gap: 1rem; margin-bottom: 1.5rem; }
+.message.user { flex-direction: row-reverse; }
+.message-avatar { width: 40px; height: 40px; background: var(--code-bg); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.2rem; flex-shrink: 0; }
+.message.user .message-avatar { background: var(--accent-bg); }
+.message-content { max-width: 70%; }
+.message-text { padding: 1rem; background: var(--code-bg); border-radius: 12px; line-height: 1.6; white-space: pre-wrap; }
+.message.user .message-text { background: var(--accent); color: white; }
+.message-time { font-size: 0.75rem; color: var(--text); margin-top: 0.25rem; }
+.cursor { animation: blink 1s infinite; }
+@keyframes blink { 0%, 50% { opacity: 1; } 51%, 100% { opacity: 0; } }
+.input-area { display: flex; gap: 0.75rem; padding: 1rem; border-top: 1px solid var(--border); }
+.input-area textarea { flex: 1; padding: 0.875rem 1rem; border: 1px solid var(--border); border-radius: 12px; resize: none; font-size: 1rem; background: var(--bg); color: var(--text); }
+.input-area textarea:focus { outline: none; border-color: var(--accent); }
+.send-btn { padding: 0.875rem 1.5rem; background: var(--accent); color: white; border: none; border-radius: 12px; font-size: 1rem; cursor: pointer; white-space: nowrap; }
+.send-btn:disabled { opacity: 0.6; cursor: not-allowed; }
+</style>

dashboard/src/views/ConversationsView.vue

@@ -28,11 +28,23 @@
     <div v-if="showModal" class="modal-overlay" @click.self="showModal = false">
       <div class="modal">
         <h2>新建会话</h2>
-        <div class="form-group"><label>标题</label><input v-model="form.title" placeholder="会话标题" /></div>
+        <div class="form-group"><label>标题</label><input v-model="form.title" placeholder="会话标题（可选）" /></div>
-        <div class="form-group"><label>模型</label><select v-model="form.model"><option value="glm-5">GLM-5</option><option value="glm-4">GLM-4</option></select></div>
+        <div class="form-group">
+          <label>Provider</label>
+          <select v-model="form.provider_id" @change="onProviderChange">
+            <option :value="null" disabled>选择 Provider</option>
+            <option v-for="p in providers" :key="p.id" :value="p.id">
+              {{ p.name }} ({{ p.provider_type }})
+            </option>
+          </select>
+        </div>
+        <div class="form-group">
+          <label>模型</label>
+          <input v-model="form.model" placeholder="如: gpt-4, deepseek-chat" />
+        </div>
         <div class="modal-actions">
           <button @click="showModal = false" class="btn-secondary">取消</button>
-          <button @click="createConv" :disabled="creating" class="btn-primary">{{ creating ? '创建中...' : '创建' }}</button>
+          <button @click="createConv" :disabled="creating || !form.provider_id" class="btn-primary">{{ creating ? '创建中...' : '创建' }}</button>
         </div>
       </div>
     </div>
@@ -42,10 +54,11 @@
 <script setup>
 import { ref, computed, onMounted } from 'vue'
 import { useRouter } from 'vue-router'
-import { conversationsAPI } from '../services/api.js'
+import { conversationsAPI, providersAPI } from '../services/api.js'
 
 const router = useRouter()
 const list = ref([])
+const providers = ref([])
 const page = ref(1)
 const pageSize = 20
 const total = ref(0)
@@ -53,7 +66,7 @@ const loading = ref(true)
 const error = ref('')
 const showModal = ref(false)
 const creating = ref(false)
-const form = ref({ title: '', model: 'glm-5' })
+const form = ref({ title: '', provider_id: null, model: '' })
 
 const totalPages = computed(() => Math.ceil(total.value / pageSize))
 
@@ -61,11 +74,25 @@ const fetchData = async () => {
   loading.value = true
   error.value = ''
   try {
-    const res = await conversationsAPI.list({ page: page.value, page_size: pageSize })
+    const [convRes, provRes] = await Promise.allSettled([
-    if (res.success) {
+      conversationsAPI.list({ page: page.value, page_size: pageSize }),
-      list.value = res.data.items || []
+      providersAPI.list()
-      total.value = res.data.total || 0
+    ])
-    } else throw new Error(res.message)
+    
+    if (convRes.status === 'fulfilled' && convRes.value.success) {
+      list.value = convRes.value.data.items || []
+      total.value = convRes.value.data.total || 0
+    }
+    
+    if (provRes.status === 'fulfilled' && provRes.value.success) {
+      providers.value = provRes.value.data.providers || []
+      // Set default provider
+      const defaultProvider = providers.value.find(p => p.is_default)
+      if (defaultProvider) {
+        form.value.provider_id = defaultProvider.id
+        form.value.model = defaultProvider.default_model
+      }
+    }
   } catch (e) {
     error.value = e.message || '加载失败'
   } finally {
@@ -79,7 +106,7 @@ const createConv = async () => {
     const res = await conversationsAPI.create(form.value)
     if (res.success && res.data?.id) {
       showModal.value = false
-      form.value = { title: '', model: 'glm-5' }
+      form.value = { title: '', provider_id: null, model: '' }
       router.push(`/conversations/${res.data.id}`)
     }
   } catch (e) { alert(e.message) }
@@ -92,6 +119,13 @@ const deleteConv = async (c) => {
   fetchData()
 }
 
+const onProviderChange = () => {
+  const provider = providers.value.find(p => p.id === form.value.provider_id)
+  if (provider) {
+    form.value.model = provider.default_model
+  }
+}
+
 const formatDate = (d) => {
   if (!d) return ''
   const diff = Date.now() - new Date(d)

dashboard/src/views/SettingsView.vue

@@ -0,0 +1,224 @@
+<template>
+  <div class="settings">
+    <h1>LLM Provider 设置</h1>
+    <p class="subtitle">配置您的 AI 模型提供商</p>
+
+    <div class="actions">
+      <button @click="showModal = true" class="btn-primary">+ 添加 Provider</button>
+    </div>
+
+    <div v-if="loading" class="loading"><div class="spinner"></div>加载中...</div>
+    <div v-else-if="error" class="error">{{ error }}</div>
+    <div v-else-if="!providers.length" class="empty">暂无 Provider，点击上方按钮添加</div>
+    
+    <div v-else class="grid">
+      <div v-for="p in providers" :key="p.id" class="card">
+        <div class="card-header">
+          <div class="card-title">
+            <h3>{{ p.name }}</h3>
+            <span v-if="p.is_default" class="badge default">⭐ 默认</span>
+          </div>
+          <label class="switch">
+            <input type="checkbox" :checked="p.enabled" @change="toggleEnabled(p)" />
+            <span class="slider"></span>
+          </label>
+        </div>
+        
+        <div class="card-info">
+          <div class="info-row"><span class="label">类型:</span> {{ p.provider_type }}</div>
+          <div class="info-row"><span class="label">API:</span> {{ p.base_url }}</div>
+          <div class="info-row"><span class="label">模型:</span> {{ p.default_model }}</div>
+        </div>
+
+        <div class="card-actions">
+          <button @click="testProvider(p)" :disabled="testing === p.id">🔗 测试</button>
+          <button @click="editProvider(p)">✏️ 编辑</button>
+          <button @click="deleteProvider(p)" class="btn-danger">🗑️ 删除</button>
+        </div>
+      </div>
+    </div>
+
+    <!-- 添加/编辑模态框 -->
+    <div v-if="showModal" class="modal-overlay" @click.self="closeModal">
+      <div class="modal">
+        <h2>{{ editing ? '编辑 Provider' : '添加 Provider' }}</h2>
+        
+        <div class="form-group"><label>名称</label><input v-model="form.name" placeholder="如: 我的 DeepSeek" /></div>
+        <div class="form-group">
+          <label>类型</label>
+          <select v-model="form.provider_type">
+            <option value="openai">OpenAI 兼容</option>
+            <option value="deepseek">DeepSeek</option>
+            <option value="glm">智谱 GLM</option>
+            <option value="anthropic">Anthropic</option>
+            <option value="custom">自定义</option>
+          </select>
+        </div>
+        <div class="form-group"><label>Base URL</label><input v-model="form.base_url" placeholder="https://api.deepseek.com/v1" /></div>
+        <div class="form-group"><label>API Key</label><input v-model="form.api_key" type="password" placeholder="sk-..." /></div>
+        <div class="form-group"><label>默认模型</label><input v-model="form.default_model" placeholder="gpt-4 / deepseek-chat" /></div>
+        <div class="form-group">
+          <label class="radio-card" :class="{ active: form.is_default }">
+            <input v-model="form.is_default" type="checkbox" />
+            <div class="radio-content">
+              <span class="radio-icon">⭐</span>
+              <div class="radio-text">
+                <span class="radio-title">设为默认 Provider</span>
+                <span class="radio-desc">新会话将默认使用此 Provider</span>
+              </div>
+            </div>
+          </label>
+        </div>
+
+        <div v-if="formError" class="error">{{ formError }}</div>
+
+        <div class="modal-actions">
+          <button @click="closeModal" class="btn-secondary">取消</button>
+          <button @click="saveProvider" :disabled="saving" class="btn-primary">{{ saving ? '保存中...' : '保存' }}</button>
+        </div>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup>
+import { ref, onMounted } from 'vue'
+import { providersAPI } from '../services/api.js'
+
+const providers = ref([])
+const loading = ref(true)
+const error = ref('')
+const showModal = ref(false)
+const editing = ref(null)
+const saving = ref(false)
+const testing = ref(null)
+const formError = ref('')
+
+const form = ref({
+  name: '', provider_type: 'openai', base_url: '', api_key: '', default_model: '', is_default: false
+})
+
+const fetchProviders = async () => {
+  loading.value = true
+  error.value = ''
+  try {
+    const res = await providersAPI.list()
+    if (res.success) providers.value = res.data.providers || []
+    else throw new Error(res.message)
+  } catch (e) { error.value = e.message }
+  finally { loading.value = false }
+}
+
+const closeModal = () => {
+  showModal.value = false
+  editing.value = null
+  form.value = { name: '', provider_type: 'openai', base_url: '', api_key: '', default_model: '', is_default: false }
+  formError.value = ''
+}
+
+const editProvider = (p) => {
+  editing.value = p.id
+  form.value = {
+    name: p.name, provider_type: p.provider_type, base_url: p.base_url,
+    api_key: p.api_key, default_model: p.default_model, is_default: p.is_default
+  }
+  showModal.value = true
+}
+
+const saveProvider = async () => {
+  if (!form.value.name || !form.value.base_url || !form.value.api_key) {
+    formError.value = '请填写所有必填项'
+    return
+  }
+  
+  saving.value = true
+  formError.value = ''
+  try {
+    const data = { ...form.value }
+    let res
+    if (editing.value) res = await providersAPI.update(editing.value, data)
+    else res = await providersAPI.create(data)
+    
+    if (res.success) { closeModal(); fetchProviders() }
+    else throw new Error(res.message)
+  } catch (e) { formError.value = e.message }
+  finally { saving.value = false }
+}
+
+const testProvider = async (p) => {
+  testing.value = p.id
+  try {
+    const res = await providersAPI.test(p.id)
+    alert(res.data?.message || (res.data?.success ? '连接成功' : '连接失败'))
+  } catch (e) { alert('测试失败: ' + e.message) }
+  finally { testing.value = null }
+}
+
+const deleteProvider = async (p) => {
+  if (!confirm(`删除「${p.name}」？`)) return
+  try {
+    const res = await providersAPI.delete(p.id)
+    if (res.success) fetchProviders()
+    else alert(res.message)
+  } catch (e) { alert('删除失败: ' + e.message) }
+}
+
+const toggleEnabled = async (p) => {
+  try {
+    const res = await providersAPI.update(p.id, { enabled: !p.enabled })
+    if (res.success) fetchProviders()
+    else alert(res.message)
+  } catch (e) { alert('更新失败: ' + e.message) }
+}
+
+onMounted(fetchProviders)
+</script>
+
+<style scoped>
+.settings { padding: 0; }
+.settings h1 { font-size: 2rem; margin: 0 0 0.5rem; color: var(--text-h); }
+.subtitle { color: var(--text); margin: 0 0 2rem; }
+.actions { margin-bottom: 2rem; }
+.btn-primary { padding: 0.75rem 1.5rem; background: var(--accent); color: white; border: none; border-radius: 8px; cursor: pointer; }
+.btn-secondary { padding: 0.75rem 1.5rem; background: var(--bg); color: var(--text); border: 1px solid var(--border); border-radius: 8px; cursor: pointer; }
+.btn-danger { background: #dc2626; color: white; border: none; padding: 0.5rem 1rem; border-radius: 6px; cursor: pointer; }
+.loading, .empty, .error { text-align: center; padding: 4rem; color: var(--text); }
+.error { background: #fef2f2; border-radius: 12px; color: #dc2626; }
+.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(350px, 1fr)); gap: 1.5rem; }
+.card { background: var(--bg); border: 1px solid var(--border); border-radius: 12px; padding: 1.5rem; }
+.card-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 1rem; }
+.card-title { display: flex; align-items: center; gap: 0.5rem; }
+.card-title h3 { margin: 0; color: var(--text-h); }
+.badge { padding: 0.25rem 0.75rem; border-radius: 20px; font-size: 0.75rem; background: var(--code-bg); color: var(--text); }
+.badge.default { background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%); color: white; }
+.switch { position: relative; display: inline-block; width: 48px; height: 26px; }
+.switch input { opacity: 0; width: 0; height: 0; }
+.slider { position: absolute; cursor: pointer; inset: 0; background-color: #ccc; transition: 0.3s; border-radius: 26px; }
+.slider:before { position: absolute; content: ""; height: 20px; width: 20px; left: 3px; bottom: 3px; background-color: white; transition: 0.3s; border-radius: 50%; }
+input:checked + .slider { background-color: #16a34a; }
+input:checked + .slider:before { transform: translateX(22px); }
+.card-info { margin-bottom: 1rem; }
+.info-row { display: flex; gap: 0.5rem; margin-bottom: 0.5rem; font-size: 0.9rem; }
+.label { color: var(--text); min-width: 50px; }
+.card-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; }
+.card-actions button { padding: 0.5rem 1rem; background: var(--bg); border: 1px solid var(--border); border-radius: 6px; cursor: pointer; }
+.modal-overlay { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.5); display: flex; align-items: center; justify-content: center; z-index: 1000; }
+.modal { background: var(--bg); border-radius: 16px; padding: 2rem; width: 100%; max-width: 500px; }
+.modal h2 { margin: 0 0 1.5rem; color: var(--text-h); }
+.form-group { margin-bottom: 1.25rem; }
+.form-group label { display: block; margin-bottom: 0.5rem; font-weight: 500; color: var(--text-h); }
+.form-group input, .form-group select { width: 100%; padding: 0.75rem; border: 1px solid var(--border); border-radius: 8px; font-size: 1rem; background: var(--bg); box-sizing: border-box; }
+.form-group.checkbox label { display: flex; align-items: center; gap: 0.5rem; cursor: pointer; }
+.radio-card { display: flex; align-items: center; padding: 1rem; border: 2px solid var(--border); border-radius: 12px; cursor: pointer; transition: all 0.2s; }
+.radio-card:hover { border-color: var(--accent); }
+.radio-card.active { border-color: var(--accent); background: var(--accent-bg); }
+.radio-card input { display: none; }
+.radio-content { display: flex; align-items: center; gap: 1rem; width: 100%; }
+.radio-icon { font-size: 1.5rem; }
+.radio-text { display: flex; flex-direction: column; }
+.radio-title { font-weight: 600; color: var(--text-h); }
+.radio-desc { font-size: 0.85rem; color: var(--text); }
+.modal-actions { display: flex; justify-content: flex-end; gap: 1rem; margin-top: 1.5rem; }
+.spinner { width: 48px; height: 48px; border: 4px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin 1s linear infinite; margin: 0 auto 1rem; }
+@keyframes spin { to { transform: rotate(360deg); } }
+</style>

luxx/__init__.py

@@ -12,7 +12,7 @@ from luxx.routes import api_router
 async def lifespan(app: FastAPI):
     """Application lifespan manager"""
     # Import all models to ensure they are registered with Base
-    from luxx import models  # noqa
+    from luxx.models import User, Conversation, Message, Project, LLMProvider  # noqa
     init_db()
     
     # Create default test user if not exists

luxx/models.py

@@ -7,6 +7,44 @@ from sqlalchemy.orm import Mapped, mapped_column, relationship
 from luxx.database import Base
 
 
+class LLMProvider(Base):
+    """LLM Provider configuration model"""
+    __tablename__ = "llm_providers"
+    
+    id: Mapped[int] = mapped_column(Integer, primary_key=True)
+    user_id: Mapped[int] = mapped_column(Integer, ForeignKey("users.id"), nullable=False)
+    name: Mapped[str] = mapped_column(String(100), nullable=False)
+    provider_type: Mapped[str] = mapped_column(String(50), nullable=False, default="openai")  # openai, deepseek, glm, etc.
+    base_url: Mapped[str] = mapped_column(String(500), nullable=False)
+    api_key: Mapped[str] = mapped_column(String(500), nullable=False)
+    default_model: Mapped[str] = mapped_column(String(100), nullable=False, default="gpt-4")
+    is_default: Mapped[bool] = mapped_column(Boolean, default=False)
+    enabled: Mapped[bool] = mapped_column(Boolean, default=True)
+    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow)
+    updated_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+    
+    # Relationships
+    user: Mapped["User"] = relationship("User", backref="llm_providers")
+    
+    def to_dict(self, include_key: bool = False):
+        """Convert to dictionary, optionally include API key"""
+        result = {
+            "id": self.id,
+            "user_id": self.user_id,
+            "name": self.name,
+            "provider_type": self.provider_type,
+            "base_url": self.base_url,
+            "default_model": self.default_model,
+            "is_default": self.is_default,
+            "enabled": self.enabled,
+            "created_at": self.created_at.isoformat() if self.created_at else None,
+            "updated_at": self.updated_at.isoformat() if self.updated_at else None
+        }
+        if include_key:
+            result["api_key"] = self.api_key
+        return result
+
+
 class Project(Base):
     """Project model"""
     __tablename__ = "projects"
@@ -56,6 +94,7 @@ class Conversation(Base):
     
     id: Mapped[str] = mapped_column(String(64), primary_key=True)
     user_id: Mapped[int] = mapped_column(Integer, ForeignKey("users.id"), nullable=False)
+    provider_id: Mapped[Optional[int]] = mapped_column(Integer, ForeignKey("llm_providers.id"), nullable=True)
     project_id: Mapped[Optional[str]] = mapped_column(String(64), ForeignKey("projects.id"), nullable=True)
     title: Mapped[str] = mapped_column(String(255), nullable=False)
     model: Mapped[str] = mapped_column(String(64), nullable=False, default="deepseek-chat")
@@ -68,6 +107,7 @@ class Conversation(Base):
     
     # Relationships
     user: Mapped["User"] = relationship("User", back_populates="conversations")
+    provider: Mapped[Optional["LLMProvider"]] = relationship("LLMProvider")
     messages: Mapped[List["Message"]] = relationship(
         "Message", back_populates="conversation", cascade="all, delete-orphan"
     )
@@ -76,6 +116,7 @@ class Conversation(Base):
         return {
             "id": self.id,
             "user_id": self.user_id,
+            "provider_id": self.provider_id,
             "project_id": self.project_id,
             "title": self.title,
             "model": self.model,

luxx/routes/__init__.py

@@ -1,7 +1,7 @@
 """API routes module"""
 from fastapi import APIRouter
 
-from luxx.routes import auth, conversations, messages, tools
+from luxx.routes import auth, conversations, messages, tools, providers
 
 
 api_router = APIRouter()
@@ -11,3 +11,4 @@ api_router.include_router(auth.router)
 api_router.include_router(conversations.router)
 api_router.include_router(messages.router)
 api_router.include_router(tools.router)
+api_router.include_router(providers.router)

luxx/routes/conversations.py

@@ -16,8 +16,9 @@ router = APIRouter(prefix="/conversations", tags=["Conversations"])
 class ConversationCreate(BaseModel):
     """Create conversation model"""
     project_id: Optional[str] = None
+    provider_id: Optional[int] = None
     title: Optional[str] = None
-    model: str = "deepseek-chat"
+    model: Optional[str] = None
     system_prompt: str = "You are a helpful assistant."
     temperature: float = 0.7
     max_tokens: int = 2000
@@ -45,7 +46,7 @@ def list_conversations(
     query = db.query(Conversation).filter(Conversation.user_id == current_user.id)
     result = paginate(query.order_by(Conversation.updated_at.desc()), page, page_size)
     return success_response(data={
-        "conversations": [c.to_dict() for c in result["items"]],
+        "items": [c.to_dict() for c in result["items"]],
         "total": result["total"],
         "page": result["page"],
         "page_size": result["page_size"]
@@ -59,12 +60,28 @@ def create_conversation(
     db: Session = Depends(get_db)
 ):
     """Create conversation"""
+    # Get provider info if provider_id is specified
+    model = data.model
+    if data.provider_id and not model:
+        from luxx.models import LLMProvider
+        provider = db.query(LLMProvider).filter(
+            LLMProvider.id == data.provider_id,
+            LLMProvider.user_id == current_user.id
+        ).first()
+        if provider:
+            model = provider.default_model
+        else:
+            model = "gpt-4"
+    elif not model:
+        model = "gpt-4"
+    
     conversation = Conversation(
         id=generate_id("conv"),
         user_id=current_user.id,
         project_id=data.project_id,
+        provider_id=data.provider_id,
         title=data.title or "New Conversation",
-        model=data.model,
+        model=model,
         system_prompt=data.system_prompt,
         temperature=data.temperature,
         max_tokens=data.max_tokens,

luxx/routes/providers.py

@@ -0,0 +1,217 @@
+"""LLM Provider routes"""
+from typing import Optional
+from fastapi import APIRouter, Depends, HTTPException
+from pydantic import BaseModel
+
+from luxx.database import get_db, SessionLocal
+from luxx.models import User, LLMProvider
+from luxx.routes.auth import get_current_user
+from luxx.utils.helpers import success_response
+import httpx
+import asyncio
+
+router = APIRouter(prefix="/providers", tags=["LLM Providers"])
+
+
+class ProviderCreate(BaseModel):
+    name: str
+    provider_type: str = "openai"
+    base_url: str
+    api_key: str
+    default_model: str = "gpt-4"
+    is_default: bool = False
+
+
+class ProviderUpdate(BaseModel):
+    name: Optional[str] = None
+    provider_type: Optional[str] = None
+    base_url: Optional[str] = None
+    api_key: Optional[str] = None
+    default_model: Optional[str] = None
+    is_default: Optional[bool] = None
+    enabled: Optional[bool] = None
+
+
+@router.get("/", response_model=dict)
+def list_providers(
+    current_user: User = Depends(get_current_user)
+):
+    """Get user's LLM providers"""
+    db = SessionLocal()
+    try:
+        providers = db.query(LLMProvider).filter(
+            LLMProvider.user_id == current_user.id
+        ).order_by(LLMProvider.is_default.desc(), LLMProvider.created_at.desc()).all()
+        
+        return success_response(data={
+            "providers": [p.to_dict() for p in providers],
+            "total": len(providers)
+        })
+    finally:
+        db.close()
+
+
+@router.post("/", response_model=dict)
+def create_provider(
+    provider: ProviderCreate,
+    current_user: User = Depends(get_current_user)
+):
+    """Create a new LLM provider"""
+    db = SessionLocal()
+    try:
+        # If this is set as default, unset other defaults
+        if provider.is_default:
+            db.query(LLMProvider).filter(
+                LLMProvider.user_id == current_user.id
+            ).update({"is_default": False})
+        
+        db_provider = LLMProvider(
+            user_id=current_user.id,
+            name=provider.name,
+            provider_type=provider.provider_type,
+            base_url=provider.base_url,
+            api_key=provider.api_key,
+            default_model=provider.default_model,
+            is_default=provider.is_default
+        )
+        db.add(db_provider)
+        db.commit()
+        db.refresh(db_provider)
+        
+        return success_response(data=db_provider.to_dict(include_key=True))
+    except Exception as e:
+        db.rollback()
+        raise HTTPException(status_code=400, detail=str(e))
+    finally:
+        db.close()
+
+
+@router.get("/{provider_id}", response_model=dict)
+def get_provider(
+    provider_id: int,
+    current_user: User = Depends(get_current_user)
+):
+    """Get provider details"""
+    db = SessionLocal()
+    try:
+        provider = db.query(LLMProvider).filter(
+            LLMProvider.id == provider_id,
+            LLMProvider.user_id == current_user.id
+        ).first()
+        
+        if not provider:
+            raise HTTPException(status_code=404, detail="Provider not found")
+        
+        return success_response(data=provider.to_dict(include_key=True))
+    finally:
+        db.close()
+
+
+@router.put("/{provider_id}", response_model=dict)
+def update_provider(
+    provider_id: int,
+    update: ProviderUpdate,
+    current_user: User = Depends(get_current_user)
+):
+    """Update provider"""
+    db = SessionLocal()
+    try:
+        provider = db.query(LLMProvider).filter(
+            LLMProvider.id == provider_id,
+            LLMProvider.user_id == current_user.id
+        ).first()
+        
+        if not provider:
+            raise HTTPException(status_code=404, detail="Provider not found")
+        
+        # If setting as default, unset others
+        if update.is_default:
+            db.query(LLMProvider).filter(
+                LLMProvider.user_id == current_user.id,
+                LLMProvider.id != provider_id
+            ).update({"is_default": False})
+        
+        # Update fields
+        update_data = update.dict(exclude_unset=True)
+        for key, value in update_data.items():
+            setattr(provider, key, value)
+        
+        db.commit()
+        db.refresh(provider)
+        
+        return success_response(data=provider.to_dict(include_key=True))
+    except HTTPException:
+        raise
+    except Exception as e:
+        db.rollback()
+        raise HTTPException(status_code=400, detail=str(e))
+    finally:
+        db.close()
+
+
+@router.delete("/{provider_id}", response_model=dict)
+def delete_provider(
+    provider_id: int,
+    current_user: User = Depends(get_current_user)
+):
+    """Delete provider"""
+    db = SessionLocal()
+    try:
+        provider = db.query(LLMProvider).filter(
+            LLMProvider.id == provider_id,
+            LLMProvider.user_id == current_user.id
+        ).first()
+        
+        if not provider:
+            raise HTTPException(status_code=404, detail="Provider not found")
+        
+        db.delete(provider)
+        db.commit()
+        
+        return success_response(message="Provider deleted")
+    finally:
+        db.close()
+
+
+@router.post("/{provider_id}/test", response_model=dict)
+def test_provider(
+    provider_id: int,
+    current_user: User = Depends(get_current_user)
+):
+    """Test provider connection"""
+
+    
+    db = SessionLocal()
+    try:
+        provider = db.query(LLMProvider).filter(
+            LLMProvider.id == provider_id,
+            LLMProvider.user_id == current_user.id
+        ).first()
+        
+        if not provider:
+            raise HTTPException(status_code=404, detail="Provider not found")
+        
+        # Test the connection
+        try:
+            async def test():
+                async with httpx.AsyncClient(timeout=10.0) as client:
+                    response = await client.post(
+                        f"{provider.base_url}/chat/completions",
+                        headers={
+                            "Authorization": f"Bearer {provider.api_key}",
+                            "Content-Type": "application/json"
+                        },
+                        json={
+                            "model": provider.default_model,
+                            "messages": [{"role": "user", "content": "Hi"}],
+                            "max_tokens": 10
+                        }
+                    )
+                    return response.status_code == 200
+            
+            success = asyncio.run(test())
+            return success_response(data={"success": success, "message": "连接成功" if success else "连接失败"})
+        except Exception as e:
+            return success_response(data={"success": False, "message": f"连接失败: {str(e)}"})
+    finally:
+        db.close()

luxx/services/chat.py

@@ -5,13 +5,37 @@ from typing import List, Dict, Any, AsyncGenerator
 from luxx.models import Conversation, Message
 from luxx.tools.executor import ToolExecutor
 from luxx.tools.core import registry
-from luxx.services.llm_client import llm_client
+from luxx.services.llm_client import LLMClient
+from luxx.config import config
 
 
 # Maximum iterations to prevent infinite loops
 MAX_ITERATIONS = 10
 
 
+def get_llm_client(conversation: Conversation = None):
+    """Get LLM client, optionally using conversation's provider"""
+    if conversation and conversation.provider_id:
+        from luxx.models import LLMProvider
+        from luxx.database import SessionLocal
+        db = SessionLocal()
+        try:
+            provider = db.query(LLMProvider).filter(LLMProvider.id == conversation.provider_id).first()
+            if provider:
+                client = LLMClient(
+                    api_key=provider.api_key,
+                    api_url=provider.base_url,
+                    model=provider.default_model
+                )
+                return client
+        finally:
+            db.close()
+    
+    # Fallback to global config
+    client = LLMClient()
+    return client
+
+
 class ChatService:
     """Chat service"""
     
@@ -66,13 +90,16 @@ class ChatService:
             
             iteration = 0
             
+            llm = get_llm_client(conversation)
+            model = conversation.model or llm.default_model or "gpt-4"
+            
             while iteration < MAX_ITERATIONS:
                 iteration += 1
                 
                 tool_calls_this_round = None
                 
-                async for event in llm_client.stream_call(
+                async for event in llm.stream_call(
-                    model=conversation.model,
+                    model=model,
                     messages=messages,
                     tools=tools,
                     temperature=conversation.temperature,
@@ -144,11 +171,14 @@ class ChatService:
             
             iteration = 0
             
+            llm_client = get_llm_client(conversation)
+            model = conversation.model or llm_client.default_model or "gpt-4"
+            
             while iteration < MAX_ITERATIONS:
                 iteration += 1
                 
                 response = llm_client.sync_call(
-                    model=conversation.model,
+                    model=model,
                     messages=messages,
                     tools=tools,
                     temperature=conversation.temperature,

luxx/services/llm_client.py

@@ -26,9 +26,10 @@ class LLMResponse:
 class LLMClient:
     """LLM API client with multi-provider support"""
     
-    def __init__(self):
+    def __init__(self, api_key: str = None, api_url: str = None, model: str = None):
-        self.api_key = config.llm_api_key
+        self.api_key = api_key or config.llm_api_key
-        self.api_url = config.llm_api_url
+        self.api_url = api_url or config.llm_api_url
+        self.default_model = model
         self.provider = self._detect_provider()
         self._client: Optional[httpx.AsyncClient] = None