fix(wp7-02): use GPT image edit route for references

config/wp7-02-oneapi-test.json

@@ -1,5 +1,5 @@
 {
-  "config_set_version": 2,
+  "config_set_version": 3,
   "gateway_account_ref": "oneapi-intelligrow-test",
   "models": [
     {
@@ -23,13 +23,14 @@
       }
     },
     {
-      "config_version": 1,
+      "config_version": 2,
       "gateway_account_ref": "oneapi-intelligrow-test",
       "model_id": "gpt-image-2",
       "route_profile": {
         "endpoint": "https://oneapi.intelligrow.cn/v1/images/generations",
         "mode": "sync",
-        "protocol_version": "openai-images-v1"
+        "protocol_version": "openai-images-v1",
+        "reference_endpoint": "https://oneapi.intelligrow.cn/v1/images/edits"
       }
     }
   ],

scripts/lib/wp7-02-controlled-executor.mjs

@@ -29,6 +29,10 @@ function assertModelConfig(modelConfig) {
     || !["gemini-native-v1", "openai-images-v1"].includes(profile.protocol_version)) {
     throw new Error("WP7_02_ROUTE_PROFILE_INVALID");
   }
+  if (profile.protocol_version === "openai-images-v1"
+    && (profile.reference_endpoint !== "https://oneapi.intelligrow.cn/v1/images/edits")) {
+    throw new Error("WP7_02_REFERENCE_ROUTE_PROFILE_INVALID");
+  }
   return modelConfig;
 }
 
@@ -87,7 +91,15 @@ export function buildProviderRequest({ modelConfig, prompt, ratio, reference })
     response_format: "b64_json",
     size: gptImageRequestSizeForRatio(ratio),
   };
-  if (reference) body.image = `data:${reference.mime_type};base64,${reference.bytes.toString("base64")}`;
+  if (reference) {
+    const form = new FormData();
+    form.append("model", config.model_id);
+    form.append("prompt", prompt);
+    form.append("response_format", "b64_json");
+    form.append("size", gptImageRequestSizeForRatio(ratio));
+    form.append("image[]", new Blob([reference.bytes], { type: reference.mime_type }), "reference.png");
+    return { body: form, headers: {}, method: "POST", url: config.route_profile.reference_endpoint };
+  }
   return { body, headers, method: "POST", url: config.route_profile.endpoint };
 }
 
@@ -253,7 +265,7 @@ export async function executeProviderRequest({ fetchImpl = fetch, modelConfig, p
   const startedAt = performance.now();
   try {
     const response = await fetchImpl(request.url, {
-      body: JSON.stringify(request.body),
+      body: request.body instanceof FormData ? request.body : JSON.stringify(request.body),
       headers: { ...request.headers, authorization: `Bearer ${token}` },
       method: request.method,
       signal: controller.signal,

tests/package/wp7-02-controlled-executor.test.mjs

@@ -38,12 +38,13 @@ const models = [
     },
   },
   {
-    config_version: 1,
+    config_version: 2,
     model_id: "gpt-image-2",
     route_profile: {
       endpoint: "https://oneapi.intelligrow.cn/v1/images/generations",
       mode: "sync",
       protocol_version: "openai-images-v1",
+      reference_endpoint: "https://oneapi.intelligrow.cn/v1/images/edits",
     },
   },
 ];