feat(auth): add oauth require availability configuration on startup (#1358)

pkg/modules/auth/openid/providers.go

@@ -126,6 +126,7 @@ func getProviderFromMap(pi map[string]interface{}, key string) (provider *Provid
 			"emailfallback",
 			"usernamefallback",
 			"forceuserinfo",
+			"requireavailability",
 		},
 		requiredKeys...,
 	)
@@ -193,17 +194,29 @@ func getProviderFromMap(pi map[string]interface{}, key string) (provider *Provid
 		}
 	}
 
+	var requireAvailability = false
+	requireAvailabilityValue, exists := pi["requireavailability"]
+	if exists {
+		requireAvailabilityTypedValue, ok := requireAvailabilityValue.(bool)
+		if ok {
+			requireAvailability = requireAvailabilityTypedValue
+		} else {
+			log.Errorf("requireavailability is not a boolean for provider %s, value: %v", key, requireAvailabilityValue)
+		}
+	}
+
 	provider = &Provider{
-		Name:             name,
-		Key:              key,
-		AuthURL:          pi["authurl"].(string),
-		OriginalAuthURL:  pi["authurl"].(string),
-		ClientSecret:     pi["clientsecret"].(string),
-		LogoutURL:        logoutURL,
-		Scope:            scope,
-		EmailFallback:    emailFallback,
-		UsernameFallback: usernameFallback,
-		ForceUserInfo:    forceUserInfo,
+		Name:                name,
+		Key:                 key,
+		AuthURL:             pi["authurl"].(string),
+		OriginalAuthURL:     pi["authurl"].(string),
+		ClientSecret:        pi["clientsecret"].(string),
+		LogoutURL:           logoutURL,
+		Scope:               scope,
+		EmailFallback:       emailFallback,
+		UsernameFallback:    usernameFallback,
+		ForceUserInfo:       forceUserInfo,
+		RequireAvailability: requireAvailability,
 	}
 
 	cl, is := pi["clientid"].(int)