fix(canvas): 角色卡引用 - 修复三视图读取与本地图片生成

backend/internal/app/provider_image_local_reference_test.go

@@ -0,0 +1,48 @@
+package app
+
+import (
+	"context"
+	"encoding/base64"
+	"testing"
+
+	"infinite-canvas/backend/internal/model"
+	"infinite-canvas/backend/internal/protocol"
+)
+
+func TestOpenAIImageLocalReferencesWithoutPublicURL(t *testing.T) {
+	service, _, imageBytes := cloudAgentVisionFixture(t)
+	t.Setenv("CANVAS_PUBLIC_BASE_URL", "")
+	input := canvasGenerationInput{
+		Mode: "image", Prompt: "Keep the character consistent with @图片1",
+		Config:          providerConfig{InterfaceType: string(model.ChannelInterfaceOpenAIImage), Model: "test-image"},
+		ReferenceImages: []providerMedia{{ID: "character", StorageKey: "resource:ref-one"}},
+	}
+	ctx := ensureOfficialProtocolAdapter(context.Background(), input.Config.InterfaceType)
+	policy := providerMediaHydrationPolicyFor(ctx, input)
+	if policy.requireURL {
+		t.Fatal("local OpenAI image references must not require a public URL")
+	}
+	if err := service.hydrateGenerationMedia("user", &input, policy); err != nil {
+		t.Fatal(err)
+	}
+	want := "data:image/png;base64," + base64.StdEncoding.EncodeToString(imageBytes)
+	if input.ReferenceImages[0].DataURL != want || input.ReferenceImages[0].URL != "" {
+		t.Fatal("reference did not hydrate from the authorized local resource")
+	}
+	adapter, ok := declarativeProtocolAdapterForContext(ctx, input.Config.InterfaceType)
+	if !ok {
+		t.Fatal("OpenAI image adapter is missing")
+	}
+	request, err := adapter.BuildCreate(ctx, protocol.RequestContext{Request: protocolRequestFromInput(input)})
+	if err != nil {
+		t.Fatal(err)
+	}
+	images := creationMaps(request.Body.(map[string]any)["images"])
+	if request.Path != "/v1/images/edits" || len(images) != 1 || images[0]["image_url"] != want {
+		t.Fatal("image edit request did not retain inline image bytes")
+	}
+	foreign := canvasGenerationInput{ReferenceImages: []providerMedia{{StorageKey: "resource:ref-one"}}}
+	if err := service.hydrateGenerationMedia("other-user", &foreign, policy); err == nil {
+		t.Fatal("another user's reference resource was accepted")
+	}
+}