fix: issues

config/config.go

@@ -14,9 +14,16 @@ type Config struct {
 	BotToken    string `mapstructure:"bot_token"`
 	SessionFile string `mapstructure:"session_file"`
 	LogFile     string `mapstructure:"log_file"`
+	MaxSize     string `mapstructure:"max_size"`
 	DSN         string `mapstructure:"dsn"`
 }
 
+// GetMaxSize
+func (c *Config) GetMaxSize() uint {
+	// parse 50m to 50 * 1024 * 1024
+	return viper.GetSizeInBytes(c.MaxSize)
+}
+
 func Load(path string) error {
 	// Load the config file
 	viper.SetConfigFile(path)