feat: support direct LLM provider config with model sync

- Fix _call_provider to support custom providers (OpenAI-compatible
  fallback) instead of raising ValueError for unknown providers
- Add POST /admin/ppt/sync-models endpoint that fetches available
  models from the configured provider's API
- Redesign PptSettingsAdmin UI: replace Dify model dropdown with
  per-provider 'sync models' button + searchable model selector
- Remove dead Dify-specific code (fetchDifyModels, applyDifyModel)
- Update deepseek default model from deepseek-chat to deepseek-v4-pro
- API Key field now always shown (not conditional on non-dify)

api/insurance/admin/ppt_admin_routes.py

@@ -244,3 +244,14 @@ def get_settings():
 def update_settings():
     updated_by = getattr(request, "user_id", "")
     return jsonify(ppt_admin_service.update_settings(request.get_json(force=True), updated_by))
+
+
+@ppt_admin_bp.route("/sync-models", methods=["POST"])
+@permission_required("config_manage")
+def sync_models():
+    data = request.get_json(force=True)
+    return jsonify(ppt_admin_service.sync_models(
+        provider=data.get("provider", ""),
+        api_key=data.get("api_key", ""),
+        base_url=data.get("base_url", ""),
+    ))

api/insurance/admin/ppt_admin_service.py

@@ -566,3 +566,58 @@ class PptAdminService:
                 db.session.add(SystemSetting(key=key, value=str(value), updated_by=updated_by))
         db.session.commit()
         return {"code": 0, "data": None}
+
+    def sync_models(self, provider: str, api_key: str, base_url: str = "") -> dict:
+        """从供应商 API 拉取可用模型列表。"""
+        if not api_key:
+            return {"code": 1001, "message": "请填写 API Key", "data": None}
+
+        try:
+            models = self._fetch_provider_models(provider, api_key, base_url)
+        except Exception as e:
+            logger.warning(f"同步模型失败: {e}")
+            return {"code": 5001, "message": f"同步失败: {e}", "data": None}
+
+        if not models:
+            return {"code": 0, "data": {"models": [], "message": "未获取到模型"}}
+
+        return {"code": 0, "data": {"models": models}}
+
+    def _fetch_provider_models(self, provider: str, api_key: str, base_url: str) -> list:
+        """根据供应商类型拉取模型列表。"""
+        import httpx
+
+        if provider == "deepseek":
+            url = "https://api.deepseek.com/v1/models"
+            headers = {"Authorization": f"Bearer {api_key}"}
+            resp = httpx.get(url, headers=headers, timeout=10)
+            resp.raise_for_status()
+            return [m["id"] for m in resp.json().get("data", [])]
+
+        elif provider == "gemini":
+            url = f"https://generativelanguage.googleapis.com/v1/models?key={api_key}"
+            resp = httpx.get(url, timeout=10)
+            resp.raise_for_status()
+            return [m["name"].split("/")[-1] for m in resp.json().get("models", [])]
+
+        elif provider == "minimax":
+            url = "https://api.minimax.chat/v1/models"
+            headers = {"Authorization": f"Bearer {api_key}"}
+            resp = httpx.get(url, headers=headers, timeout=10)
+            resp.raise_for_status()
+            data = resp.json()
+            models = data.get("models") or data.get("data", [])
+            return [m.get("id") or m.get("model", "") for m in models if m]
+
+        elif provider == "dify":
+            return [m["model"] for m in (self._fetch_dify_models() or [])]
+
+        else:
+            # 自定义供应商：OpenAI 兼容 /models 端点
+            if not base_url:
+                return []
+            url = f"{base_url.rstrip('/')}/models"
+            headers = {"Authorization": f"Bearer {api_key}"}
+            resp = httpx.get(url, headers=headers, timeout=10)
+            resp.raise_for_status()
+            return [m["id"] for m in resp.json().get("data", [])]

api/insurance/ppt/llm_client.py

@@ -35,7 +35,7 @@ PROVIDERS = {
     "deepseek": LLMProviderConfig(
         name="deepseek",
         base_url="https://api.deepseek.com/v1",
-        model="deepseek-chat",
+        model="deepseek-v4-pro",
         max_retries=2,
         rate_limit=0,
     ),
@@ -149,7 +149,16 @@ async def _call_provider(
             "generationConfig": {"temperature": 0.3, "maxOutputTokens": 4096},
         }
     else:
-        raise ValueError(f"Unknown provider: {config.name}")
+        # 自定义供应商：OpenAI 兼容格式
+        headers["Authorization"] = f"Bearer {api_key}"
+        base = config.base_url.rstrip("/")
+        url = f"{base}/chat/completions"
+        body = {
+            "model": config.model,
+            "messages": messages,
+            "temperature": 0.3,
+            "max_tokens": 4096,
+        }
 
     async with httpx.AsyncClient(timeout=timeout_s) as client:
         resp = await client.post(url, json=body, headers=headers)
@@ -159,20 +168,7 @@ async def _call_provider(
     latency_ms = (time.monotonic() - start) * 1000
 
     # 解析响应
-    if config.name in ("deepseek", "minimax"):
+    if config.name == "gemini":
-        content = ""
-        choices = data.get("choices", [])
-        if choices:
-            content = choices[0].get("message", {}).get("content", "")
-        usage = data.get("usage")
-        tokens = None
-        if usage:
-            tokens = {
-                "input": usage.get("prompt_tokens", 0),
-                "output": usage.get("completion_tokens", 0),
-            }
-    else:
-        # Gemini
         content = ""
         candidates = data.get("candidates", [])
         if candidates:
@@ -186,6 +182,19 @@ async def _call_provider(
                 "input": usage_meta.get("promptTokenCount", 0),
                 "output": usage_meta.get("candidatesTokenCount", 0),
             }
+    else:
+        # OpenAI 兼容格式（deepseek / minimax / 自定义供应商）
+        content = ""
+        choices = data.get("choices", [])
+        if choices:
+            content = choices[0].get("message", {}).get("content", "")
+        usage = data.get("usage")
+        tokens = None
+        if usage:
+            tokens = {
+                "input": usage.get("prompt_tokens", 0),
+                "output": usage.get("completion_tokens", 0),
+            }
 
     return LLMResponse(
         content=content,

frontend/src/pages/admin/PptSettingsAdmin.vue

@@ -20,34 +20,28 @@
 
       <el-form-item label="模型名称">
         <div style="display: flex; gap: 8px; width: 100%">
-          <el-input v-model="form.ppt_llm_model" placeholder="如 deepseek-chat" />
+          <el-select
-          <el-button v-if="!difyModels.length" @click="fetchDifyModels" :loading="fetchingModels">从 Dify 获取</el-button>
+            v-if="pptAvailableModels.length"
-          <el-dropdown v-else trigger="click" @command="(cmd: string) => applyDifyModel('ppt', cmd)">
+            v-model="form.ppt_llm_model"
-            <el-button>从 Dify 获取 <el-icon><ArrowDown /></el-icon></el-button>
+            filterable allow-create
-            <template #dropdown>
+            placeholder="选择或输入模型名"
-              <el-dropdown-menu>
+            style="flex: 1"
-                <el-dropdown-item v-for="m in difyModels" :key="m.provider + '/' + m.model"
+          >
-                  :command="m.provider + '|' + m.model">
+            <el-option v-for="m in pptAvailableModels" :key="m" :label="m" :value="m" />
-                  {{ m.label }} ({{ m.provider }}/{{ m.model }})
+          </el-select>
-                </el-dropdown-item>
+          <el-input v-else v-model="form.ppt_llm_model" placeholder="如 deepseek-v4-pro" style="flex: 1" />
-              </el-dropdown-menu>
+          <el-button @click="handlePptSyncModels" :loading="syncingPptModels">同步模型</el-button>
-            </template>
-          </el-dropdown>
         </div>
       </el-form-item>
 
-      <el-form-item v-if="form.ppt_llm_provider !== 'dify'" label="API Key">
+      <el-form-item label="API Key">
-        <el-input v-model="form.ppt_llm_api_key" type="password" show-password placeholder="留空则使用环境变量配置" />
+        <el-input v-model="form.ppt_llm_api_key" type="password" show-password placeholder="该供应商的 API Key" />
       </el-form-item>
 
       <el-form-item v-if="form.ppt_llm_provider === 'custom'" label="Base URL">
         <el-input v-model="form.ppt_llm_base_url" placeholder="如 https://api.openai.com/v1" />
       </el-form-item>
 
-      <el-form-item v-if="form.ppt_llm_provider === 'dify'" label="">
-        <el-tag type="success">通过 Dify 调用，无需配置 API Key</el-tag>
-      </el-form-item>
-
       <!-- 海报文案模型 -->
       <el-divider content-position="left">海报文案模型</el-divider>
 
@@ -63,34 +57,30 @@
 
       <el-form-item label="模型名称">
         <div style="display: flex; gap: 8px; width: 100%">
-          <el-input v-model="form.poster_llm_model" placeholder="如 deepseek-chat" />
+          <el-select
-          <el-button v-if="!difyModels.length" @click="fetchDifyModels" :loading="fetchingModels">从 Dify 获取</el-button>
+            v-if="availableModels.length"
-          <el-dropdown v-else trigger="click" @command="(cmd: string) => applyDifyModel('poster', cmd)">
+            v-model="form.poster_llm_model"
-            <el-button>从 Dify 获取 <el-icon><ArrowDown /></el-icon></el-button>
+            filterable allow-create
-            <template #dropdown>
+            placeholder="选择或输入模型名"
-              <el-dropdown-menu>
+            style="flex: 1"
-                <el-dropdown-item v-for="m in difyModels" :key="m.provider + '/' + m.model"
+          >
-                  :command="m.provider + '|' + m.model">
+            <el-option v-for="m in availableModels" :key="m" :label="m" :value="m" />
-                  {{ m.label }} ({{ m.provider }}/{{ m.model }})
+          </el-select>
-                </el-dropdown-item>
+          <el-input v-else v-model="form.poster_llm_model" placeholder="如 deepseek-v4-pro" style="flex: 1" />
-              </el-dropdown-menu>
+          <el-button @click="handleSyncModels" :loading="syncingModels">
-            </template>
+            同步模型
-          </el-dropdown>
+          </el-button>
         </div>
       </el-form-item>
 
-      <el-form-item v-if="form.poster_llm_provider !== 'dify'" label="API Key">
+      <el-form-item label="API Key">
-        <el-input v-model="form.poster_llm_api_key" type="password" show-password placeholder="留空则使用环境变量配置" />
+        <el-input v-model="form.poster_llm_api_key" type="password" show-password placeholder="该供应商的 API Key" />
       </el-form-item>
 
       <el-form-item v-if="form.poster_llm_provider === 'custom'" label="Base URL">
         <el-input v-model="form.poster_llm_base_url" placeholder="如 https://api.openai.com/v1" />
       </el-form-item>
 
-      <el-form-item v-if="form.poster_llm_provider === 'dify'" label="">
-        <el-tag type="success">通过 Dify 调用，无需配置 API Key</el-tag>
-      </el-form-item>
-
       <!-- 海报图片模型 -->
       <el-divider content-position="left">海报图片模型</el-divider>
 
@@ -133,13 +123,14 @@
 <script setup lang="ts">
 import { ref, reactive, onMounted } from 'vue'
 import { ElMessage } from 'element-plus'
-import { ArrowDown } from '@element-plus/icons-vue'
 import { pptAdminApi } from '@/utils/ppt-admin-api'
 
 const loading = ref(false)
 const saving = ref(false)
-const fetchingModels = ref(false)
+const syncingModels = ref(false)
-const difyModels = ref<Array<{ provider: string; model: string; label: string }>>([])
+const availableModels = ref<string[]>([])
+const syncingPptModels = ref(false)
+const pptAvailableModels = ref<string[]>([])
 
 const form = reactive({
   ppt_llm_provider: 'deepseek',
@@ -158,7 +149,7 @@ const form = reactive({
 })
 
 const DEFAULT_MODELS: Record<string, string> = {
-  deepseek: 'deepseek-chat',
+  deepseek: 'deepseek-v4-pro',
   minimax: 'MiniMax-2.7-Flash',
   gemini: 'gemini-2.5-flash',
   openai: 'gpt-4o',
@@ -213,33 +204,47 @@ function inferBaseUrl(model: string): string {
   return ''
 }
 
-function applyDifyModel(target: 'ppt' | 'poster', command: string) {
+async function handleSyncModels() {
-  const [, model] = command.split('|')
+  syncingModels.value = true
-  if (target === 'ppt') {
+  try {
-    form.ppt_llm_provider = 'dify'
+    const res: any = await pptAdminApi.syncModels({
-    form.ppt_llm_model = model
+      provider: form.poster_llm_provider,
-    form.ppt_llm_api_key = ''
+      api_key: form.poster_llm_api_key,
-    form.ppt_llm_base_url = ''
+      base_url: form.poster_llm_base_url,
-  } else {
+    })
-    form.poster_llm_provider = 'dify'
+    const models = res?.data?.models || []
-    form.poster_llm_model = model
+    availableModels.value = models
-    form.poster_llm_api_key = ''
+    if (!models.length) {
-    form.poster_llm_base_url = ''
+      ElMessage.warning('未获取到模型，请检查 API Key 和供应商配置')
+    } else {
+      ElMessage.success(`同步成功，共 ${models.length} 个模型`)
+    }
+  } catch (e: any) {
+    ElMessage.error(e?.message || '同步失败')
+  } finally {
+    syncingModels.value = false
   }
 }
 
-async function fetchDifyModels() {
+async function handlePptSyncModels() {
-  fetchingModels.value = true
+  syncingPptModels.value = true
   try {
-    const res: any = await pptAdminApi.getAvailableModels()
+    const res: any = await pptAdminApi.syncModels({
-    difyModels.value = res?.data?.models || []
+      provider: form.ppt_llm_provider,
-    if (!difyModels.value.length) {
+      api_key: form.ppt_llm_api_key,
-      ElMessage.warning('未获取到可用模型，请检查 Dify Workspace API Key 配置')
+      base_url: form.ppt_llm_base_url,
+    })
+    const models = res?.data?.models || []
+    pptAvailableModels.value = models
+    if (!models.length) {
+      ElMessage.warning('未获取到模型，请检查 API Key 和供应商配置')
+    } else {
+      ElMessage.success(`同步成功，共 ${models.length} 个模型`)
     }
-  } catch {
+  } catch (e: any) {
-    ElMessage.error('获取模型列表失败')
+    ElMessage.error(e?.message || '同步失败')
   } finally {
-    fetchingModels.value = false
+    syncingPptModels.value = false
   }
 }
 

frontend/src/utils/ppt-admin-api.ts

@@ -105,4 +105,7 @@ export const pptAdminApi = {
   getAvailableModels() {
     return api.get('/admin/ppt/available-models')
   },
+  syncModels(data: { provider: string; api_key: string; base_url?: string }) {
+    return api.post('/admin/ppt/sync-models', data)
+  },
 }