Add a configuration to disable signing up

internal/config/config.go

@@ -18,6 +18,7 @@ type Config struct {
 	ImageFolderPath     string `toml:"image-folder-path" default:"img" comment:"Folder where uploaded files will be stored."`
 	Limit               int    `toml:"limit" default:"100" comment:"A single API call will return at most this number of records."`
 	InventaireUrl       string `toml:"inventaire-url" default:"https://inventaire.io" comment:"An inventaire.io instance URL."`
+	DisableRegistration bool   `toml:"disable-registration" default:"false" comment:"Disable new account creation."`
 }
 
 func defaultConfig() Config {
@@ -29,6 +30,7 @@ func defaultConfig() Config {
 		ImageFolderPath:     "img",
 		Limit:               100,
 		InventaireUrl:       "https://inventaire.io",
+		DisableRegistration: false,
 	}
 }
 

internal/myvalidator/myvalidator.go

@@ -46,7 +46,7 @@ func ReturnErrorsAsJsonResponse(ac *appcontext.AppContext, err error) {
 	if errors.As(err, &ve) {
 		ac.C.JSON(http.StatusBadRequest, getValidationErrors(ac, &ve))
 	} else if errors.As(err, &httpError) {
-		ac.C.JSON(httpError.StatusCode, gin.H{"error": httpError.Err})
+		ac.C.JSON(httpError.StatusCode, gin.H{"error": httpError.Err.Error()})
 	} else {
 		ac.C.JSON(http.StatusInternalServerError, gin.H{"error": err})
 	}

internal/routes/usersignup.go

@@ -1,6 +1,9 @@
 package routes
 
 import (
+	"errors"
+	"net/http"
+
 	"git.artlef.fr/PersonalLibraryManager/internal/appcontext"
 	"git.artlef.fr/PersonalLibraryManager/internal/dto"
 	"git.artlef.fr/PersonalLibraryManager/internal/model"
@@ -9,6 +12,14 @@ import (
 )
 
 func PostSignupHandler(ac appcontext.AppContext) {
+	if ac.Config.DisableRegistration {
+		myvalidator.ReturnErrorsAsJsonResponse(&ac,
+			myvalidator.HttpError{
+				StatusCode: http.StatusForbidden,
+				Err:        errors.New("Registration has been disabled on this instance."),
+			})
+		return
+	}
 	var user dto.UserSignup
 	err := ac.C.ShouldBindJSON(&user)
 	if err != nil {