proxy, ui-svelte: add /sdapi/v1 endpoint support (#587)

Add proxy routes for stable-diffusion.cpp's /sdapi/v1/txt2img, /sdapi/v1/img2img, and /sdapi/v1/loras endpoints. POST endpoints use proxyInferenceHandler (model in JSON body), GET /loras uses proxyGETModelHandler (model in query param). Update the image playground with a dual-mode UI supporting both OpenAI and SDAPI backends. In SDAPI mode, loras are fetched first to prime the server-side cache, and all txt2img parameters are exposed (negative prompt, steps, cfg_scale, seed, batch_size, clip_skip, sampler, scheduler, lora selection with multipliers). - Add 3 sdapi route registrations in proxymanager.go - Add sdApi.ts client with generateSdImage and fetchSdLoras - Add SDAPI types (SdApiTxt2ImgRequest, SdApiResponse, etc.) - Add /sdapi to vite dev proxy config - Add backend tests for sdapi routing - Support batch image display in gallery grid https://claude.ai/code/session_0186MGX6NXdHVBTv2KH45fqn --------- Co-authored-by: Claude <noreply@anthropic.com>
2026-03-19 22:08:31 +09:00
parent c3c258a55d
commit 15bd55d3a9
9 changed files with 514 additions and 32 deletions
@@ -1659,3 +1659,82 @@ models:
 		assert.Equal(t, "no", w.Header().Get("X-Accel-Buffering"))
 	})
 }
+
+func TestProxyManager_SdApiTxt2ImgRouting(t *testing.T) {
+	conf := config.AddDefaultGroupToConfig(config.Config{
+		HealthCheckTimeout: 15,
+		Models: map[string]config.ModelConfig{
+			"sd-model": getTestSimpleResponderConfig("sd-model"),
+		},
+		LogLevel: "error",
+	})
+
+	proxy := New(conf)
+	defer proxy.StopProcesses(StopWaitForInflightRequest)
+
+	t.Run("successful txt2img with model", func(t *testing.T) {
+		reqBody := `{"model":"sd-model","prompt":"a cat"}`
+		req := httptest.NewRequest("POST", "/sdapi/v1/txt2img", bytes.NewBufferString(reqBody))
+		w := CreateTestResponseRecorder()
+
+		proxy.ServeHTTP(w, req)
+		assert.Equal(t, http.StatusOK, w.Code)
+		assert.Contains(t, w.Body.String(), "sd-model")
+	})
+
+	t.Run("successful img2img with model", func(t *testing.T) {
+		reqBody := `{"model":"sd-model","prompt":"a cat","init_images":[]}`
+		req := httptest.NewRequest("POST", "/sdapi/v1/img2img", bytes.NewBufferString(reqBody))
+		w := CreateTestResponseRecorder()
+
+		proxy.ServeHTTP(w, req)
+		assert.Equal(t, http.StatusOK, w.Code)
+		assert.Contains(t, w.Body.String(), "sd-model")
+	})
+
+	t.Run("missing model returns 400", func(t *testing.T) {
+		reqBody := `{"prompt":"a cat"}`
+		req := httptest.NewRequest("POST", "/sdapi/v1/txt2img", bytes.NewBufferString(reqBody))
+		w := CreateTestResponseRecorder()
+
+		proxy.ServeHTTP(w, req)
+		assert.Equal(t, http.StatusBadRequest, w.Code)
+		assert.Contains(t, w.Body.String(), "missing or invalid 'model' key")
+	})
+}
+
+func TestProxyManager_SdApiGetLoras(t *testing.T) {
+	conf := config.AddDefaultGroupToConfig(config.Config{
+		HealthCheckTimeout: 15,
+		Models: map[string]config.ModelConfig{
+			"sd-model": getTestSimpleResponderConfig("sd-model"),
+		},
+		LogLevel: "error",
+	})
+
+	proxy := New(conf)
+	defer proxy.StopProcesses(StopWaitForInflightRequest)
+
+	t.Run("successful GET loras with model query param", func(t *testing.T) {
+		req := httptest.NewRequest("GET", "/sdapi/v1/loras?model=sd-model", nil)
+		w := CreateTestResponseRecorder()
+		proxy.ServeHTTP(w, req)
+		assert.Equal(t, http.StatusOK, w.Code)
+	})
+
+	t.Run("missing model query param returns 400", func(t *testing.T) {
+		req := httptest.NewRequest("GET", "/sdapi/v1/loras", nil)
+		w := CreateTestResponseRecorder()
+		proxy.ServeHTTP(w, req)
+		assert.Equal(t, http.StatusBadRequest, w.Code)
+		assert.Contains(t, w.Body.String(), "missing required 'model' query parameter")
+	})
+
+	t.Run("unknown model returns 400", func(t *testing.T) {
+		req := httptest.NewRequest("GET", "/sdapi/v1/loras?model=nonexistent", nil)
+		w := CreateTestResponseRecorder()
+		proxy.ServeHTTP(w, req)
+		assert.Equal(t, http.StatusBadRequest, w.Code)
+		assert.Contains(t, w.Body.String(), "could not find suitable handler")
+	})
+}