feat: able to change gemini safety setting (#867)

* perf: adjust gemini safety settings, set BLOCK_NONE by default

* feat: able to adjust by env variable

---------

Co-authored-by: JustSong <songquanpeng@foxmail.com>

common/constants.go

@@ -98,6 +98,8 @@ var BatchUpdateInterval = GetOrDefault("BATCH_UPDATE_INTERVAL", 5)
 
 var RelayTimeout = GetOrDefault("RELAY_TIMEOUT", 0) // unit is second
 
+var GeminiSafetySetting = GetOrDefaultString("GEMINI_SAFETY_SETTING", "BLOCK_NONE")
+
 const (
 	RequestIdKey = "X-Oneapi-Request-Id"
 )

common/utils.go

@@ -196,6 +196,13 @@ func GetOrDefault(env string, defaultValue int) int {
 	return num
 }
 
+func GetOrDefaultString(env string, defaultValue string) string {
+	if env == "" || os.Getenv(env) == "" {
+		return defaultValue
+	}
+	return os.Getenv(env)
+}
+
 func MessageWithRequestId(message string, id string) string {
 	return fmt.Sprintf("%s (request id: %s)", message, id)
 }