Verbindungscheck beim Provider-Einrichten (Task #10)

Add an inline "Verbindung testen" button to the Neuer/Bearbeiten provider
dialogs so users can test a connection with the currently entered values
before saving.

Backend:
- New endpoint POST /providers/test-connection that accepts an ad-hoc provider
  config (apiType, baseUrl, model, optional apiToken, optional providerId) in
  the request body and runs a one-shot test via the existing callProvider
  logic. When apiToken is empty and providerId is given, it falls back to the
  stored token of that provider (edit case). Returns { ok, message }; the token
  is never returned or leaked (existing redactSecrets still applies to errors).
- Defined ProviderTestConnectionInput schema + path in openapi.yaml and ran
  codegen for Zod schemas and the React client.

Frontend (artifacts/skillguard/src/pages/admin.tsx):
- Add dialog: "Verbindung testen" button (disabled until Base URL + Token set
  or while testing) with loading spinner and an inline green success / red
  error result box. Result resets when the dialog closes.
- Edit dialog: same inline test; empty token field falls back to the stored
  token via providerId. Result resets on open/close.
- The existing per-card "Verbindung testen" button is unchanged.

Verification: typecheck passes for api-server and skillguard; curl tested the
new endpoint for success-path (fetch error surfaced), empty-token, and invalid
body (400) cases. Token not present in any response.

Deviations: none.
Replit-Task-Id: 4f77293f-468c-496a-ab05-1f10e7bf8137

artifacts/api-server/src/routes/providers.ts

@@ -11,6 +11,7 @@ import {
   DeleteProviderParams,
   TestProviderParams,
   TestProviderResponse,
+  TestProviderConnectionBody,
 } from "@workspace/api-zod";
 import { callProvider } from "../lib/aiAnalysis";
 
@@ -141,4 +142,63 @@ router.post("/providers/:id/test", async (req, res) => {
   }
 });
 
+router.post("/providers/test-connection", async (req, res) => {
+  const parsed = TestProviderConnectionBody.safeParse(req.body);
+  if (!parsed.success)
+    return res
+      .status(400)
+      .json({ message: "Ungültige Eingabe", details: parsed.error.issues });
+  const d = parsed.data;
+
+  let token: string | null =
+    d.apiToken && d.apiToken !== "" ? d.apiToken : null;
+  if (!token && d.providerId !== undefined && d.providerId !== null) {
+    const [existing] = await db
+      .select()
+      .from(aiProvidersTable)
+      .where(eq(aiProvidersTable.id, d.providerId));
+    if (existing?.apiToken) token = existing.apiToken;
+  }
+  if (!token) {
+    return res.json(
+      TestProviderResponse.parse({
+        ok: false,
+        message: "Kein API-Token angegeben.",
+      }),
+    );
+  }
+
+  const provider: AiProvider = {
+    id: d.providerId ?? 0,
+    name: "",
+    apiType: d.apiType,
+    baseUrl: d.baseUrl,
+    model: d.model,
+    apiToken: token,
+    enabled: true,
+    createdAt: new Date(),
+  };
+
+  try {
+    const reply = await callProvider(
+      provider,
+      "Du bist ein Verbindungstest.",
+      'Antworte mit dem einzelnen Wort "OK".',
+    );
+    return res.json(
+      TestProviderResponse.parse({
+        ok: true,
+        message: `Verbindung erfolgreich. Antwort: ${reply.trim().slice(0, 80) || "(leer)"}`,
+      }),
+    );
+  } catch (err) {
+    return res.json(
+      TestProviderResponse.parse({
+        ok: false,
+        message: err instanceof Error ? err.message : "Verbindung fehlgeschlagen.",
+      }),
+    );
+  }
+});
+
 export default router;

artifacts/skillguard/src/pages/admin.tsx

@@ -1,7 +1,7 @@
 import { useState } from "react";
 import { useQueryClient } from "@tanstack/react-query";
 import { 
-  useListProviders, getListProvidersQueryKey, useCreateProvider, useUpdateProvider, useDeleteProvider, useTestProvider,
+  useListProviders, getListProvidersQueryKey, useCreateProvider, useUpdateProvider, useDeleteProvider, useTestProvider, useTestProviderConnection,
   useListPrompts, getListPromptsQueryKey, useUpdatePrompt,
   useListRules, getListRulesQueryKey, useUpdateRule,
   AiProviderApiType, RuleUpdateSeverity
@@ -30,13 +30,18 @@ function ProviderTab() {
   const updateProvider = useUpdateProvider();
   const deleteProvider = useDeleteProvider();
   const testProvider = useTestProvider();
+  const testConnection = useTestProviderConnection();
 
   const [isAddOpen, setIsAddOpen] = useState(false);
   const [addForm, setAddForm] = useState({ name: "", apiType: AiProviderApiType.openai as AiProviderApiType, baseUrl: "", model: "", apiToken: "", enabled: true });
-  
+  const [addTesting, setAddTesting] = useState(false);
+  const [addTestResult, setAddTestResult] = useState<{ ok: boolean; message: string } | null>(null);
+
   const [editingId, setEditingId] = useState<number | null>(null);
   const [editForm, setEditForm] = useState({ name: "", apiType: AiProviderApiType.openai as AiProviderApiType, baseUrl: "", model: "", apiToken: "", enabled: true });
-  
+  const [editTesting, setEditTesting] = useState(false);
+  const [editTestResult, setEditTestResult] = useState<{ ok: boolean; message: string } | null>(null);
+
   const [testingId, setTestingId] = useState<number | null>(null);
 
   const invalidate = () => queryClient.invalidateQueries({ queryKey: getListProvidersQueryKey() });
@@ -99,6 +104,37 @@ function ProviderTab() {
     });
   };
 
+  const handleAddTest = () => {
+    setAddTestResult(null);
+    setAddTesting(true);
+    testConnection.mutate({ data: { apiType: addForm.apiType, baseUrl: addForm.baseUrl, model: addForm.model, apiToken: addForm.apiToken } }, {
+      onSuccess: (res) => {
+        setAddTesting(false);
+        setAddTestResult({ ok: res.ok, message: res.message || (res.ok ? "Der API-Aufruf war erfolgreich." : "Es gab ein Problem.") });
+      },
+      onError: () => {
+        setAddTesting(false);
+        setAddTestResult({ ok: false, message: "Verbindungstest konnte nicht durchgeführt werden." });
+      }
+    });
+  };
+
+  const handleEditTest = () => {
+    if (!editingId) return;
+    setEditTestResult(null);
+    setEditTesting(true);
+    testConnection.mutate({ data: { apiType: editForm.apiType, baseUrl: editForm.baseUrl, model: editForm.model, apiToken: editForm.apiToken, providerId: editingId } }, {
+      onSuccess: (res) => {
+        setEditTesting(false);
+        setEditTestResult({ ok: res.ok, message: res.message || (res.ok ? "Der API-Aufruf war erfolgreich." : "Es gab ein Problem.") });
+      },
+      onError: () => {
+        setEditTesting(false);
+        setEditTestResult({ ok: false, message: "Verbindungstest konnte nicht durchgeführt werden." });
+      }
+    });
+  };
+
   const openEdit = (provider: any) => {
     setEditForm({
       name: provider.name,
@@ -108,6 +144,8 @@ function ProviderTab() {
       apiToken: "",
       enabled: provider.enabled
     });
+    setEditTestResult(null);
+    setEditTesting(false);
     setEditingId(provider.id);
   };
 
@@ -120,7 +158,7 @@ function ProviderTab() {
           <h2 className="text-xl font-bold">KI-Provider</h2>
           <p className="text-sm text-muted-foreground">Konfigurieren Sie externe LLM-Provider für die semantische Analyse.</p>
         </div>
-        <Dialog open={isAddOpen} onOpenChange={setIsAddOpen}>
+        <Dialog open={isAddOpen} onOpenChange={(o) => { setIsAddOpen(o); if (!o) { setAddTestResult(null); setAddTesting(false); } }}>
           <DialogTrigger asChild>
             <Button className="gap-2"><Plus className="w-4 h-4"/> Provider hinzufügen</Button>
           </DialogTrigger>
@@ -165,8 +203,18 @@ function ProviderTab() {
                   <Label>Aktiviert</Label>
                   <Switch checked={addForm.enabled} onCheckedChange={c => setAddForm({...addForm, enabled: c})} />
                 </div>
+                {addTestResult && (
+                  <div className={`flex items-start gap-2 rounded-md border p-3 text-sm ${addTestResult.ok ? "border-green-500/50 bg-green-500/10 text-green-700 dark:text-green-400" : "border-destructive/50 bg-destructive/10 text-destructive"}`}>
+                    {addTestResult.ok ? <CheckCircle2 className="w-4 h-4 mt-0.5 shrink-0" /> : <XCircle className="w-4 h-4 mt-0.5 shrink-0" />}
+                    <span className="break-words">{addTestResult.message}</span>
+                  </div>
+                )}
               </div>
-              <DialogFooter>
+              <DialogFooter className="gap-2 sm:gap-0">
+                <Button type="button" variant="outline" className="mr-auto" onClick={handleAddTest} disabled={!addForm.baseUrl || !addForm.apiToken || addTesting}>
+                  {addTesting ? <Loader2 className="w-4 h-4 mr-2 animate-spin" /> : <Activity className="w-4 h-4 mr-2" />}
+                  Verbindung testen
+                </Button>
                 <Button type="submit" disabled={createProvider.isPending}>Speichern</Button>
               </DialogFooter>
             </form>
@@ -252,8 +300,18 @@ function ProviderTab() {
                         <Label>API Token (leer lassen zum Beibehalten)</Label>
                         <Input type="password" value={editForm.apiToken} onChange={e => setEditForm({...editForm, apiToken: e.target.value})} placeholder="Token beibehalten" />
                       </div>
+                      {editTestResult && (
+                        <div className={`flex items-start gap-2 rounded-md border p-3 text-sm ${editTestResult.ok ? "border-green-500/50 bg-green-500/10 text-green-700 dark:text-green-400" : "border-destructive/50 bg-destructive/10 text-destructive"}`}>
+                          {editTestResult.ok ? <CheckCircle2 className="w-4 h-4 mt-0.5 shrink-0" /> : <XCircle className="w-4 h-4 mt-0.5 shrink-0" />}
+                          <span className="break-words">{editTestResult.message}</span>
+                        </div>
+                      )}
                     </div>
-                    <DialogFooter>
+                    <DialogFooter className="gap-2 sm:gap-0">
+                      <Button type="button" variant="outline" className="mr-auto" onClick={handleEditTest} disabled={!editForm.baseUrl || editTesting}>
+                        {editTesting ? <Loader2 className="w-4 h-4 mr-2 animate-spin" /> : <Activity className="w-4 h-4 mr-2" />}
+                        Verbindung testen
+                      </Button>
                       <Button type="submit" disabled={updateProvider.isPending}>Speichern</Button>
                     </DialogFooter>
                   </form>

lib/api-client-react/src/generated/api.schemas.ts

@@ -303,6 +303,27 @@ export interface ProviderTestResult {
   message?: string | null;
 }
 
+export type ProviderTestConnectionInputApiType = typeof ProviderTestConnectionInputApiType[keyof typeof ProviderTestConnectionInputApiType];
+
+
+export const ProviderTestConnectionInputApiType = {
+  openai: 'openai',
+  anthropic: 'anthropic',
+  custom: 'custom',
+} as const;
+
+export interface ProviderTestConnectionInput {
+  apiType: ProviderTestConnectionInputApiType;
+  /** @minLength 1 */
+  baseUrl: string;
+  /** @minLength 1 */
+  model: string;
+  /** Token to use for the test; omit or leave empty to fall back to the stored token of providerId */
+  apiToken?: string;
+  /** When apiToken is empty, fall back to this saved provider's stored token */
+  providerId?: number;
+}
+
 export interface Prompt {
   id: number;
   key: string;

lib/api-client-react/src/generated/api.ts

@@ -28,6 +28,7 @@ import type {
   HealthStatus,
   Prompt,
   PromptUpdate,
+  ProviderTestConnectionInput,
   ProviderTestResult,
   Rule,
   RuleUpdate,
@@ -860,6 +861,77 @@ export const useTestProvider = <TError = ErrorType<unknown>,
       return useMutation(getTestProviderMutationOptions(options));
     }
 
+export const getTestProviderConnectionUrl = () => {
+
+
+
+
+  return `/api/providers/test-connection`
+}
+
+/**
+ * @summary Test a provider connection with ad-hoc configuration
+ */
+export const testProviderConnection = async (providerTestConnectionInput: ProviderTestConnectionInput, options?: RequestInit): Promise<ProviderTestResult> => {
+
+  return customFetch<ProviderTestResult>(getTestProviderConnectionUrl(),
+  {
+    ...options,
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json', ...options?.headers },
+    body: JSON.stringify(
+      providerTestConnectionInput,)
+  }
+);}
+
+
+
+
+export const getTestProviderConnectionMutationOptions = <TError = ErrorType<unknown>,
+    TContext = unknown>(options?: { mutation?:UseMutationOptions<Awaited<ReturnType<typeof testProviderConnection>>, TError,{data: BodyType<ProviderTestConnectionInput>}, TContext>, request?: SecondParameter<typeof customFetch>}
+): UseMutationOptions<Awaited<ReturnType<typeof testProviderConnection>>, TError,{data: BodyType<ProviderTestConnectionInput>}, TContext> => {
+
+const mutationKey = ['testProviderConnection'];
+const {mutation: mutationOptions, request: requestOptions} = options ?
+      options.mutation && 'mutationKey' in options.mutation && options.mutation.mutationKey ?
+      options
+      : {...options, mutation: {...options.mutation, mutationKey}}
+      : {mutation: { mutationKey, }, request: undefined};
+
+
+
+
+      const mutationFn: MutationFunction<Awaited<ReturnType<typeof testProviderConnection>>, {data: BodyType<ProviderTestConnectionInput>}> = (props) => {
+          const {data} = props ?? {};
+
+          return  testProviderConnection(data,requestOptions)
+        }
+
+
+
+
+
+
+  return  { mutationFn, ...mutationOptions }}
+
+    export type TestProviderConnectionMutationResult = NonNullable<Awaited<ReturnType<typeof testProviderConnection>>>
+    export type TestProviderConnectionMutationBody = BodyType<ProviderTestConnectionInput>
+    export type TestProviderConnectionMutationError = ErrorType<unknown>
+
+    /**
+ * @summary Test a provider connection with ad-hoc configuration
+ */
+export const useTestProviderConnection = <TError = ErrorType<unknown>,
+    TContext = unknown>(options?: { mutation?:UseMutationOptions<Awaited<ReturnType<typeof testProviderConnection>>, TError,{data: BodyType<ProviderTestConnectionInput>}, TContext>, request?: SecondParameter<typeof customFetch>}
+ ): UseMutationResult<
+        Awaited<ReturnType<typeof testProviderConnection>>,
+        TError,
+        {data: BodyType<ProviderTestConnectionInput>},
+        TContext
+      > => {
+      return useMutation(getTestProviderConnectionMutationOptions(options));
+    }
+
 export const getListPromptsUrl = () => {
 
 

lib/api-spec/openapi.yaml

@@ -218,6 +218,25 @@ paths:
               schema:
                 $ref: "#/components/schemas/ProviderTestResult"
 
+  /providers/test-connection:
+    post:
+      operationId: testProviderConnection
+      tags: [providers]
+      summary: Test a provider connection with ad-hoc configuration
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              $ref: "#/components/schemas/ProviderTestConnectionInput"
+      responses:
+        "200":
+          description: Test result
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/ProviderTestResult"
+
   /prompts:
     get:
       operationId: listPrompts
@@ -584,6 +603,26 @@ components:
         message:
           type: ["string", "null"]
 
+    ProviderTestConnectionInput:
+      type: object
+      required: [apiType, baseUrl, model]
+      properties:
+        apiType:
+          type: string
+          enum: [openai, anthropic, custom]
+        baseUrl:
+          type: string
+          minLength: 1
+        model:
+          type: string
+          minLength: 1
+        apiToken:
+          type: string
+          description: Token to use for the test; omit or leave empty to fall back to the stored token of providerId
+        providerId:
+          type: integer
+          description: When apiToken is empty, fall back to this saved provider's stored token
+
     Prompt:
       type: object
       required: [id, key, name, content, updatedAt]

lib/api-zod/src/generated/api.ts

@@ -273,6 +273,27 @@ export const TestProviderResponse = zod.object({
 })
 
 
+/**
+ * @summary Test a provider connection with ad-hoc configuration
+ */
+
+
+
+
+export const TestProviderConnectionBody = zod.object({
+  "apiType": zod.enum(['openai', 'anthropic', 'custom']),
+  "baseUrl": zod.string().min(1),
+  "model": zod.string().min(1),
+  "apiToken": zod.string().optional().describe('Token to use for the test; omit or leave empty to fall back to the stored token of providerId'),
+  "providerId": zod.number().optional().describe('When apiToken is empty, fall back to this saved provider\'s stored token')
+})
+
+export const TestProviderConnectionResponse = zod.object({
+  "ok": zod.boolean(),
+  "message": zod.string().nullish()
+})
+
+
 /**
  * @summary List configurable AI prompts
  */

lib/api-zod/src/generated/types/index.ts

@@ -23,6 +23,8 @@ export * from './findingSeverity';
 export * from './healthStatus';
 export * from './prompt';
 export * from './promptUpdate';
+export * from './providerTestConnectionInput';
+export * from './providerTestConnectionInputApiType';
 export * from './providerTestResult';
 export * from './rule';
 export * from './ruleAxis';

lib/api-zod/src/generated/types/providerTestConnectionInput.ts

@@ -0,0 +1,20 @@
+/**
+ * Generated by orval v8.9.1 🍺
+ * Do not edit manually.
+ * Api
+ * API specification
+ * OpenAPI spec version: 0.1.0
+ */
+import type { ProviderTestConnectionInputApiType } from './providerTestConnectionInputApiType';
+
+export interface ProviderTestConnectionInput {
+  apiType: ProviderTestConnectionInputApiType;
+  /** @minLength 1 */
+  baseUrl: string;
+  /** @minLength 1 */
+  model: string;
+  /** Token to use for the test; omit or leave empty to fall back to the stored token of providerId */
+  apiToken?: string;
+  /** When apiToken is empty, fall back to this saved provider's stored token */
+  providerId?: number;
+}

lib/api-zod/src/generated/types/providerTestConnectionInputApiType.ts

@@ -0,0 +1,16 @@
+/**
+ * Generated by orval v8.9.1 🍺
+ * Do not edit manually.
+ * Api
+ * API specification
+ * OpenAPI spec version: 0.1.0
+ */
+
+export type ProviderTestConnectionInputApiType = typeof ProviderTestConnectionInputApiType[keyof typeof ProviderTestConnectionInputApiType];
+
+
+export const ProviderTestConnectionInputApiType = {
+  openai: 'openai',
+  anthropic: 'anthropic',
+  custom: 'custom',
+} as const;