Add projects

backend/internal/runtime/executor/helps/gemini_content_turns.go

@@ -0,0 +1,39 @@
+package helps
+
+import (
+	translatorcommon "github.com/router-for-me/CLIProxyAPI/v7/internal/translator/common"
+	"github.com/router-for-me/CLIProxyAPI/v7/internal/util"
+	"github.com/tidwall/gjson"
+	"github.com/tidwall/sjson"
+)
+
+var emptyGeminiUserTurnJSON = []byte(`{"role":"user","parts":[{"text":""}]}`)
+
+// EnsureGeminiLeadingUserContent ensures that the contents array at the given path
+// starts with a user turn when sending to Gemini/Antigravity upstreams.
+func EnsureGeminiLeadingUserContent(payload []byte, path string) []byte {
+	firstRole := gjson.GetBytes(payload, path+".0.role")
+	if firstRole.String() != "model" {
+		return payload
+	}
+	contents := util.GetGJSONBytesNoCopy(payload, path)
+	if !contents.IsArray() {
+		return payload
+	}
+	contentArray := contents.Array()
+	if len(contentArray) == 0 {
+		return payload
+	}
+
+	contentItems := make([][]byte, 0, len(contentArray)+1)
+	contentItems = append(contentItems, emptyGeminiUserTurnJSON)
+	for _, content := range contentArray {
+		contentItems = append(contentItems, []byte(content.Raw))
+	}
+
+	out, errSet := sjson.SetRawBytes(payload, path, translatorcommon.JoinRawArray(contentItems))
+	if errSet != nil {
+		return payload
+	}
+	return out
+}