feat(sync): full code sync from release

backend/internal/service/openai_oauth_service_auth_url_test.go

@@ -0,0 +1,67 @@
+package service
+
+import (
+	"context"
+	"errors"
+	"net/url"
+	"testing"
+
+	"github.com/Wei-Shaw/sub2api/internal/pkg/openai"
+	"github.com/stretchr/testify/require"
+)
+
+type openaiOAuthClientAuthURLStub struct{}
+
+func (s *openaiOAuthClientAuthURLStub) ExchangeCode(ctx context.Context, code, codeVerifier, redirectURI, proxyURL, clientID string) (*openai.TokenResponse, error) {
+	return nil, errors.New("not implemented")
+}
+
+func (s *openaiOAuthClientAuthURLStub) RefreshToken(ctx context.Context, refreshToken, proxyURL string) (*openai.TokenResponse, error) {
+	return nil, errors.New("not implemented")
+}
+
+func (s *openaiOAuthClientAuthURLStub) RefreshTokenWithClientID(ctx context.Context, refreshToken, proxyURL string, clientID string) (*openai.TokenResponse, error) {
+	return nil, errors.New("not implemented")
+}
+
+func TestOpenAIOAuthService_GenerateAuthURL_OpenAIKeepsCodexFlow(t *testing.T) {
+	svc := NewOpenAIOAuthService(nil, &openaiOAuthClientAuthURLStub{})
+	defer svc.Stop()
+
+	result, err := svc.GenerateAuthURL(context.Background(), nil, "", PlatformOpenAI)
+	require.NoError(t, err)
+	require.NotEmpty(t, result.AuthURL)
+	require.NotEmpty(t, result.SessionID)
+
+	parsed, err := url.Parse(result.AuthURL)
+	require.NoError(t, err)
+	q := parsed.Query()
+	require.Equal(t, openai.ClientID, q.Get("client_id"))
+	require.Equal(t, "true", q.Get("codex_cli_simplified_flow"))
+
+	session, ok := svc.sessionStore.Get(result.SessionID)
+	require.True(t, ok)
+	require.Equal(t, openai.ClientID, session.ClientID)
+}
+
+// TestOpenAIOAuthService_GenerateAuthURL_SoraUsesCodexClient 验证 Sora 平台复用 Codex CLI 的
+// client_id（支持 localhost redirect_uri），但不启用 codex_cli_simplified_flow。
+func TestOpenAIOAuthService_GenerateAuthURL_SoraUsesCodexClient(t *testing.T) {
+	svc := NewOpenAIOAuthService(nil, &openaiOAuthClientAuthURLStub{})
+	defer svc.Stop()
+
+	result, err := svc.GenerateAuthURL(context.Background(), nil, "", PlatformSora)
+	require.NoError(t, err)
+	require.NotEmpty(t, result.AuthURL)
+	require.NotEmpty(t, result.SessionID)
+
+	parsed, err := url.Parse(result.AuthURL)
+	require.NoError(t, err)
+	q := parsed.Query()
+	require.Equal(t, openai.ClientID, q.Get("client_id"))
+	require.Empty(t, q.Get("codex_cli_simplified_flow"))
+
+	session, ok := svc.sessionStore.Get(result.SessionID)
+	require.True(t, ok)
+	require.Equal(t, openai.ClientID, session.ClientID)
+}