fix: generate valid urls when app url contains a trailing slash (#257)

backend/internal/service/email_service.go

@@ -16,6 +16,7 @@ import (
 
 	"github.com/pocket-id/pocket-id/backend/internal/common"
 	"github.com/pocket-id/pocket-id/backend/internal/model"
+	"github.com/pocket-id/pocket-id/backend/internal/utils"
 	"github.com/pocket-id/pocket-id/backend/internal/utils/email"
 	"gorm.io/gorm"
 )
@@ -66,7 +67,7 @@ func (srv *EmailService) SendTestEmail(recipientUserId string) error {
 func SendEmail[V any](srv *EmailService, toEmail email.Address, template email.Template[V], tData *V) error {
 	data := &email.TemplateData[V]{
 		AppName: srv.appConfigService.DbConfig.AppName.Value,
-		LogoURL: common.EnvConfig.AppURL + "/api/application-configuration/logo",
+		LogoURL: utils.GetAbsoluteURL(common.EnvConfig.AppURL, "/api/application-configuration/logo"),
 		Data:    tData,
 	}
 

backend/internal/service/oidc_service.go

@@ -401,7 +401,7 @@ func (s *OidcService) GetUserClaimsForClient(userID string, clientID string) (ma
 		"family_name":        user.LastName,
 		"name":               user.FullName(),
 		"preferred_username": user.Username,
-		"picture":            fmt.Sprintf("%s/api/users/%s/profile-picture.png", common.EnvConfig.AppURL, user.ID),
+		"picture":            utils.GetAbsoluteURL(common.EnvConfig.AppURL, fmt.Sprintf("/api/users/%s/profile-picture.png", user.ID)),
 	}
 
 	if strings.Contains(scope, "profile") {

backend/internal/service/user_service.go

@@ -3,8 +3,6 @@ package service
 import (
 	"errors"
 	"fmt"
-	"github.com/google/uuid"
-	"github.com/pocket-id/pocket-id/backend/internal/utils/image"
 	"io"
 	"log"
 	"net/url"
@@ -12,6 +10,9 @@ import (
 	"strings"
 	"time"
 
+	"github.com/google/uuid"
+	profilepicture "github.com/pocket-id/pocket-id/backend/internal/utils/image"
+
 	"github.com/pocket-id/pocket-id/backend/internal/common"
 	"github.com/pocket-id/pocket-id/backend/internal/dto"
 	"github.com/pocket-id/pocket-id/backend/internal/model"
@@ -197,7 +198,7 @@ func (s *UserService) RequestOneTimeAccessEmail(emailAddress, redirectPath strin
 		return err
 	}
 
-	link := fmt.Sprintf("%s/login/%s", common.EnvConfig.AppURL, oneTimeAccessToken)
+	link := utils.GetAbsoluteURL(common.EnvConfig.AppURL, fmt.Sprintf("/login/%s", oneTimeAccessToken))
 
 	// Add redirect path to the link
 	if strings.HasPrefix(redirectPath, "/") {