Mikrotik integration (#467)

Allow MikroTik routes as WireGuard backends

internal/config/config.go

@@ -44,6 +44,8 @@ type Config struct {
 		LimitAdditionalUserPeers int           `yaml:"limit_additional_user_peers"`
 	} `yaml:"advanced"`
 
+	Backend Backend `yaml:"backend"`
+
 	Statistics struct {
 		UsePingChecks          bool          `yaml:"use_ping_checks"`
 		PingCheckWorkers       int           `yaml:"ping_check_workers"`
@@ -99,6 +101,12 @@ func (c *Config) LogStartupValues() {
 		"minPasswordLength", c.Auth.MinPasswordLength,
 		"hideLoginForm", c.Auth.HideLoginForm,
 	)
+
+	slog.Debug("Config Backend",
+		"defaultBackend", c.Backend.Default,
+		"extraBackends", len(c.Backend.Mikrotik),
+	)
+
 }
 
 // defaultConfig returns the default configuration
@@ -122,6 +130,10 @@ func defaultConfig() *Config {
 		DSN:  "data/sqlite.db",
 	}
 
+	cfg.Backend = Backend{
+		Default: LocalBackendName, // local backend is the default (using wgcrtl)
+	}
+
 	cfg.Web = WebConfig{
 		RequestLogging:    false,
 		ExternalUrl:       "http://localhost:8888",
@@ -201,6 +213,10 @@ func GetConfig() (*Config, error) {
 	}
 
 	cfg.Web.Sanitize()
+	err := cfg.Backend.Validate()
+	if err != nil {
+		return nil, err
+	}
 
 	return cfg, nil
 }