fix: preserve explicit zero values in native relay requests

dto/openai_request_zero_value_test.go

@@ -0,0 +1,73 @@
+package dto
+
+import (
+	"testing"
+
+	"github.com/QuantumNous/new-api/common"
+	"github.com/stretchr/testify/require"
+	"github.com/tidwall/gjson"
+)
+
+func TestGeneralOpenAIRequestPreserveExplicitZeroValues(t *testing.T) {
+	raw := []byte(`{
+		"model":"gpt-4.1",
+		"stream":false,
+		"max_tokens":0,
+		"max_completion_tokens":0,
+		"top_p":0,
+		"top_k":0,
+		"n":0,
+		"frequency_penalty":0,
+		"presence_penalty":0,
+		"seed":0,
+		"logprobs":false,
+		"top_logprobs":0,
+		"dimensions":0,
+		"return_images":false,
+		"return_related_questions":false
+	}`)
+
+	var req GeneralOpenAIRequest
+	err := common.Unmarshal(raw, &req)
+	require.NoError(t, err)
+
+	encoded, err := common.Marshal(req)
+	require.NoError(t, err)
+
+	require.True(t, gjson.GetBytes(encoded, "stream").Exists())
+	require.True(t, gjson.GetBytes(encoded, "max_tokens").Exists())
+	require.True(t, gjson.GetBytes(encoded, "max_completion_tokens").Exists())
+	require.True(t, gjson.GetBytes(encoded, "top_p").Exists())
+	require.True(t, gjson.GetBytes(encoded, "top_k").Exists())
+	require.True(t, gjson.GetBytes(encoded, "n").Exists())
+	require.True(t, gjson.GetBytes(encoded, "frequency_penalty").Exists())
+	require.True(t, gjson.GetBytes(encoded, "presence_penalty").Exists())
+	require.True(t, gjson.GetBytes(encoded, "seed").Exists())
+	require.True(t, gjson.GetBytes(encoded, "logprobs").Exists())
+	require.True(t, gjson.GetBytes(encoded, "top_logprobs").Exists())
+	require.True(t, gjson.GetBytes(encoded, "dimensions").Exists())
+	require.True(t, gjson.GetBytes(encoded, "return_images").Exists())
+	require.True(t, gjson.GetBytes(encoded, "return_related_questions").Exists())
+}
+
+func TestOpenAIResponsesRequestPreserveExplicitZeroValues(t *testing.T) {
+	raw := []byte(`{
+		"model":"gpt-4.1",
+		"max_output_tokens":0,
+		"max_tool_calls":0,
+		"stream":false,
+		"top_p":0
+	}`)
+
+	var req OpenAIResponsesRequest
+	err := common.Unmarshal(raw, &req)
+	require.NoError(t, err)
+
+	encoded, err := common.Marshal(req)
+	require.NoError(t, err)
+
+	require.True(t, gjson.GetBytes(encoded, "max_output_tokens").Exists())
+	require.True(t, gjson.GetBytes(encoded, "max_tool_calls").Exists())
+	require.True(t, gjson.GetBytes(encoded, "stream").Exists())
+	require.True(t, gjson.GetBytes(encoded, "top_p").Exists())
+}