Add better errors to providers init

auth/errors.go

@@ -3,5 +3,7 @@ package auth
 import "errors"
 
 var (
-	UserIdNotStored = errors.New("user id was not stored in user session")
+	UserIdNotStored             = errors.New("user id was not stored in user session")
+	NoProvidersSet              = errors.New("no providers were set during initialisation")
+	ProvidersAlreadyInitialised = errors.New("providers were already initialised")
 )

auth/providers.go

@@ -28,10 +28,10 @@ var (
 	}
 )
 
-func SetupProviders(baseUrl string) {
+func SetupProviders(baseUrl string) error {
 	if areProvidersSet() {
 		// prevent duplicate provider setup
-		return
+		return ProvidersAlreadyInitialised
 	}
 
 	baseUrl = strings.TrimRight(baseUrl, "/")
@@ -50,6 +50,12 @@ func SetupProviders(baseUrl string) {
 	}
 
 	goth.UseProviders(enabledProviders...)
+
+	if !areProvidersSet() {
+		return NoProvidersSet
+	}
+
+	return nil
 }
 
 func GetEnabledProviders() []string {

main.go

@@ -61,7 +61,9 @@ func runEngine() error {
 	controllers.SetRoutes(router.Group("/api/v1"))
 
 	auth.InitSessionStore(listenDomain)
-	auth.SetupProviders(baseAddress.String())
+	if err = auth.SetupProviders(baseAddress.String()); err != nil {
+		log.Panicf("Failed to setup login providers: %v", err)
+	}
 
 	log.Infoln("Starting server...")
 	return router.Run(listenAddress)