feat: multiple oauth providers (#355)

* feat: add flag decoder (candidate)

* refactor: finalize flags decoder

* feat: add env decoder

* feat: add oauth config parsing logic

* feat: implement backend logic for multiple oauth providers

* feat: implement multiple oauth providers in the frontend

* feat: add some default icons

* chore: add credits for parser

* feat: style oauth auto redirect screen

* fix: bot suggestions

* refactor: rework decoders using simpler and more efficient pattern

* refactor: rework oauth name database migration

internal/controller/context_controller.go

@@ -19,25 +19,30 @@ type UserContextResponse struct {
 	Provider    string `json:"provider"`
 	OAuth       bool   `json:"oauth"`
 	TotpPending bool   `json:"totpPending"`
+	OAuthName   string `json:"oauthName"`
 }
 
 type AppContextResponse struct {
-	Status                int      `json:"status"`
-	Message               string   `json:"message"`
-	ConfiguredProviders   []string `json:"configuredProviders"`
-	Title                 string   `json:"title"`
-	GenericName           string   `json:"genericName"`
-	AppURL                string   `json:"appUrl"`
-	CookieDomain          string   `json:"cookieDomain"`
-	ForgotPasswordMessage string   `json:"forgotPasswordMessage"`
-	BackgroundImage       string   `json:"backgroundImage"`
-	OAuthAutoRedirect     string   `json:"oauthAutoRedirect"`
+	Status                int        `json:"status"`
+	Message               string     `json:"message"`
+	Providers             []Provider `json:"providers"`
+	Title                 string     `json:"title"`
+	AppURL                string     `json:"appUrl"`
+	CookieDomain          string     `json:"cookieDomain"`
+	ForgotPasswordMessage string     `json:"forgotPasswordMessage"`
+	BackgroundImage       string     `json:"backgroundImage"`
+	OAuthAutoRedirect     string     `json:"oauthAutoRedirect"`
+}
+
+type Provider struct {
+	Name  string `json:"name"`
+	ID    string `json:"id"`
+	OAuth bool   `json:"oauth"`
 }
 
 type ContextControllerConfig struct {
-	ConfiguredProviders   []string
+	Providers             []Provider
 	Title                 string
-	GenericName           string
 	AppURL                string
 	CookieDomain          string
 	ForgotPasswordMessage string
@@ -76,6 +81,7 @@ func (controller *ContextController) userContextHandler(c *gin.Context) {
 		Provider:    context.Provider,
 		OAuth:       context.OAuth,
 		TotpPending: context.TotpPending,
+		OAuthName:   context.OAuthName,
 	}
 
 	if err != nil {
@@ -96,9 +102,8 @@ func (controller *ContextController) appContextHandler(c *gin.Context) {
 	c.JSON(200, AppContextResponse{
 		Status:                200,
 		Message:               "Success",
-		ConfiguredProviders:   controller.config.ConfiguredProviders,
+		Providers:             controller.config.Providers,
 		Title:                 controller.config.Title,
-		GenericName:           controller.config.GenericName,
 		AppURL:                fmt.Sprintf("%s://%s", appUrl.Scheme, appUrl.Host),
 		CookieDomain:          controller.config.CookieDomain,
 		ForgotPasswordMessage: controller.config.ForgotPasswordMessage,

internal/controller/context_controller_test.go

@@ -12,9 +12,19 @@ import (
 )
 
 var controllerCfg = controller.ContextControllerConfig{
-	ConfiguredProviders:   []string{"github", "google", "generic"},
+	Providers: []controller.Provider{
+		{
+			Name:  "Username",
+			ID:    "username",
+			OAuth: false,
+		},
+		{
+			Name:  "Google",
+			ID:    "google",
+			OAuth: true,
+		},
+	},
 	Title:                 "Test App",
-	GenericName:           "Generic",
 	AppURL:                "http://localhost:8080",
 	CookieDomain:          "localhost",
 	ForgotPasswordMessage: "Contact admin to reset your password.",
@@ -58,9 +68,8 @@ func TestAppContextHandler(t *testing.T) {
 	expectedRes := controller.AppContextResponse{
 		Status:                200,
 		Message:               "Success",
-		ConfiguredProviders:   controllerCfg.ConfiguredProviders,
+		Providers:             controllerCfg.Providers,
 		Title:                 controllerCfg.Title,
-		GenericName:           controllerCfg.GenericName,
 		AppURL:                controllerCfg.AppURL,
 		CookieDomain:          controllerCfg.CookieDomain,
 		ForgotPasswordMessage: controllerCfg.ForgotPasswordMessage,

internal/controller/oauth_controller.go

@@ -186,6 +186,7 @@ func (controller *OAuthController) oauthCallbackHandler(c *gin.Context) {
 		Email:       user.Email,
 		Provider:    req.Provider,
 		OAuthGroups: utils.CoalesceToString(user.Groups),
+		OAuthName:   service.GetName(),
 	})
 
 	if err != nil {