feat(auth): add arbitrary list methods metadata field (#1242)

* feat(auth): add arbitrary list methods metadata field

* refactor(internal/config): simplify metadata key

internal/config/authentication.go

@@ -154,6 +154,7 @@ type StaticAuthenticationMethodInfo struct {
 type AuthenticationMethodInfo struct {
  Method auth.Method
  SessionCompatible bool
+ Metadata map[string]string
 }
 
 // Name returns the friendly lower-case name for the authentication method.
@@ -209,10 +210,21 @@ type AuthenticationMethodOIDCConfig struct {
 
 // Info describes properties of the authentication method "oidc".
 func (a AuthenticationMethodOIDCConfig) Info() AuthenticationMethodInfo {
- return AuthenticationMethodInfo{
+ info := AuthenticationMethodInfo{
  Method: auth.Method_METHOD_OIDC,
  SessionCompatible: true,
+ Metadata: map[string]string{},
+ }
+
+ // this ensures we expose the authorize and callback URL endpoint
+ // to the UI via the /auth/v1/method endpoint
+ for provider := range a.Providers {
+ key := fmt.Sprintf("provider.%s", provider)
+ info.Metadata[key+".authorize_url"] = fmt.Sprintf("/auth/v1/method/oidc/%s/authorize", provider)
+ info.Metadata[key+".callback_url"] = fmt.Sprintf("/auth/v1/method/oidc/%s/callback", provider)
  }
+
+ return info
 }
 
 // AuthenticationOIDCProvider configures provider credentials

internal/server/auth/public/server.go

@@ -30,6 +30,7 @@ func NewServer(logger *zap.Logger, conf config.AuthenticationConfig) *Server {
  server.resp.Methods = append(server.resp.Methods, &auth.MethodInfo{
  Method: info.AuthenticationMethodInfo.Method,
  SessionCompatible: info.AuthenticationMethodInfo.SessionCompatible,
+ Metadata: info.AuthenticationMethodInfo.Metadata,
  })
  }