chore(auth): more refactoring

handler/auth.go

@@ -2,6 +2,10 @@ package handler
 
 import (
 	"me-fit/service"
+	"me-fit/template"
+	"me-fit/template/auth"
+	"me-fit/types"
+	"me-fit/utils"
 
 	"database/sql"
 	"net/http"
@@ -10,13 +14,13 @@ import (
 func authUi(db *sql.DB) http.Handler {
 	router := http.NewServeMux()
 
-	router.Handle("/auth/signin", service.HandleSignInPage(db))
-	router.Handle("/auth/signup", service.HandleSignUpPage(db))
-	router.Handle("/auth/verify", service.HandleSignUpVerifyPage(db)) // Hint for the user to verify their email
-	router.Handle("/auth/delete-account", service.HandleDeleteAccountPage(db))
-	router.Handle("/auth/verify-email", service.HandleSignUpVerifyResponsePage(db)) // The link contained in the email
-	router.Handle("/auth/change-password", service.HandleChangePasswordPage(db))
-	router.Handle("/auth/reset-password", service.HandleResetPasswordPage(db))
+	router.Handle("/auth/signin", handleSignInPage(db))
+	router.Handle("/auth/signup", handleSignUpPage(db))
+	router.Handle("/auth/verify", handleSignUpVerifyPage(db)) // Hint for the user to verify their email
+	router.Handle("/auth/delete-account", handleDeleteAccountPage(db))
+	router.Handle("/auth/verify-email", handleSignUpVerifyResponsePage(db)) // The link contained in the email
+	router.Handle("/auth/change-password", handleChangePasswordPage(db))
+	router.Handle("/auth/reset-password", handleResetPasswordPage(db))
 	router.Handle("/", handleNotFound(db))
 
 	return router
@@ -25,8 +29,8 @@ func authUi(db *sql.DB) http.Handler {
 func authApi(db *sql.DB) http.Handler {
 	router := http.NewServeMux()
 
-	router.Handle("/api/auth/signup", service.HandleSignUpComp(db))
-	router.Handle("/api/auth/signin", service.HandleSignInComp(db))
+	router.Handle("/api/auth/signup", handleSignUp(db))
+	router.Handle("/api/auth/signin", handleSignIn(db))
 	router.Handle("/api/auth/signout", service.HandleSignOutComp(db))
 	router.Handle("/api/auth/delete-account", service.HandleDeleteAccountComp(db))
 	router.Handle("/api/auth/verify-resend", service.HandleVerifyResendComp(db))
@@ -36,3 +40,189 @@ func authApi(db *sql.DB) http.Handler {
 
 	return router
 }
+
+func handleSignInPage(db *sql.DB) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		user := service.GetUserFromRequest(db, r)
+
+		if user == nil {
+			userComp := service.UserInfoComp(nil)
+			signIn := auth.SignInOrUpComp(true)
+			err := template.Layout(signIn, userComp).Render(r.Context(), w)
+
+			if err != nil {
+				utils.LogError("Failed to render sign in page", err)
+				http.Error(w, "Internal Server Error", http.StatusInternalServerError)
+			}
+
+		} else if !user.EmailVerified {
+			utils.DoRedirect(w, r, "/auth/verify")
+		} else {
+			utils.DoRedirect(w, r, "/")
+		}
+	}
+}
+
+func handleSignUpPage(db *sql.DB) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		user := service.GetUserFromRequest(db, r)
+
+		if user == nil {
+			userComp := service.UserInfoComp(nil)
+			signUpComp := auth.SignInOrUpComp(false)
+			err := template.Layout(signUpComp, userComp).Render(r.Context(), w)
+
+			if err != nil {
+				utils.LogError("Failed to render sign up page", err)
+				http.Error(w, "Internal Server Error", http.StatusInternalServerError)
+			}
+
+		} else if !user.EmailVerified {
+			utils.DoRedirect(w, r, "/auth/verify")
+		} else {
+			utils.DoRedirect(w, r, "/")
+		}
+	}
+}
+
+func handleSignUpVerifyPage(db *sql.DB) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		user := service.GetUserFromRequest(db, r)
+		if user == nil {
+			utils.DoRedirect(w, r, "/auth/signin")
+		} else if user.EmailVerified {
+			utils.DoRedirect(w, r, "/")
+		} else {
+			userComp := service.UserInfoComp(user)
+			signIn := auth.VerifyComp()
+			err := template.Layout(signIn, userComp).Render(r.Context(), w)
+			if err != nil {
+				utils.LogError("Failed to render verify page", err)
+				http.Error(w, "Internal Server Error", http.StatusInternalServerError)
+			}
+		}
+	}
+}
+
+func handleDeleteAccountPage(db *sql.DB) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		// An unverified email should be able to delete their account
+		user := service.GetUserFromRequest(db, r)
+		if user == nil {
+			utils.DoRedirect(w, r, "/auth/signin")
+		} else {
+			userComp := service.UserInfoComp(user)
+			comp := auth.DeleteAccountComp()
+			err := template.Layout(comp, userComp).Render(r.Context(), w)
+			if err != nil {
+				utils.LogError("Failed to render delete account page", err)
+				http.Error(w, "Internal Server Error", http.StatusInternalServerError)
+			}
+		}
+	}
+}
+
+func handleSignUpVerifyResponsePage(db *sql.DB) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+
+		token := r.URL.Query().Get("token")
+		if token == "" {
+			utils.DoRedirect(w, r, "/auth/verify")
+			return
+		}
+
+		err := service.ValidateEmail(db, token)
+		if err != nil {
+			utils.LogError("Could not validate email", err)
+			http.Error(w, "Internal Server Error", http.StatusInternalServerError)
+			return
+		}
+
+		utils.DoRedirect(w, r, "/")
+	}
+}
+
+func handleChangePasswordPage(db *sql.DB) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+
+		isPasswordReset := r.URL.Query().Has("token")
+
+		user := service.GetUserFromRequest(db, r)
+		if user == nil && !isPasswordReset {
+			utils.DoRedirect(w, r, "/auth/signin")
+		} else {
+			userComp := service.UserInfoComp(user)
+			comp := auth.ChangePasswordComp(isPasswordReset)
+			err := template.Layout(comp, userComp).Render(r.Context(), w)
+			if err != nil {
+				utils.LogError("Failed to render change password page", err)
+				http.Error(w, "Internal Server Error", http.StatusInternalServerError)
+			}
+		}
+	}
+}
+
+func handleResetPasswordPage(db *sql.DB) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+
+		user := service.GetUserFromRequest(db, r)
+		if user != nil {
+			utils.DoRedirect(w, r, "/auth/signin")
+		} else {
+			userComp := service.UserInfoComp(nil)
+			comp := auth.ResetPasswordComp()
+			err := template.Layout(comp, userComp).Render(r.Context(), w)
+			if err != nil {
+				utils.LogError("Failed to render change password page", err)
+				http.Error(w, "Internal Server Error", http.StatusInternalServerError)
+			}
+		}
+	}
+}
+
+func handleSignUp(db *sql.DB) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var email = r.FormValue("email")
+		var password = r.FormValue("password")
+
+		sessionId, err := service.SignUp(db, email, password)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusBadRequest)
+			return
+		}
+
+		http.SetCookie(w, createSessionCookie(*sessionId))
+
+		utils.DoRedirect(w, r, "/auth/verify")
+	}
+}
+
+func createSessionCookie(sessionId types.SessionId) *http.Cookie {
+	cookie := http.Cookie{
+		Name:     "id",
+		Value:    string(sessionId),
+		MaxAge:   60 * 60 * 8, // 8 hours
+		Secure:   true,
+		HttpOnly: true,
+		SameSite: http.SameSiteStrictMode,
+		Path:     "/",
+	}
+
+	return &cookie
+}
+
+func handleSignIn(db *sql.DB) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var email = r.FormValue("email")
+		var password = r.FormValue("password")
+
+		sessionId, err := service.SignIn(db, email, password)
+		if err != nil {
+			utils.TriggerToast(w, r, "error", "Invalid username or password")
+		}
+
+		http.SetCookie(w, createSessionCookie(*sessionId))
+
+		utils.DoRedirect(w, r, "/auth/verify")
+	}
+}

handler/default.go

@@ -21,17 +21,17 @@ func GetHandler(db *sql.DB) http.Handler {
 	router.Handle("/auth/", authUi(db))
 	router.Handle("/api/auth/", authApi(db))
 
-	router.Handle("/workout", auth(db, workoutUi(db)))
-	router.Handle("/api/workout", auth(db, workoutApi(db)))
+	router.Handle("/workout", authMiddleware(db, workoutUi(db)))
+	router.Handle("/api/workout", authMiddleware(db, workoutApi(db)))
 	// Needed a second time with trailing slash, otherwise either /api/workout or /api/workout/{id} does not match
-	router.Handle("/api/workout/", auth(db, workoutApi(db)))
+	router.Handle("/api/workout/", authMiddleware(db, workoutApi(db)))
 
 	return middleware.Logging(
 		middleware.EnableCors(
 			router))
 }
 
-func auth(db *sql.DB, h http.Handler) http.Handler {
+func authMiddleware(db *sql.DB, h http.Handler) http.Handler {
 	return middleware.EnsureValidSession(db, h)
 }
 

service/auth.go

@@ -13,7 +13,6 @@ import (
 	"strings"
 	"time"
 
-	"me-fit/template"
 	"me-fit/template/auth"
 	tempMail "me-fit/template/mail"
 	"me-fit/types"
@@ -25,6 +24,98 @@ import (
 )
 
 // TESTED
+// NOT TESTED
+
+func SignUp(db *sql.DB, email string, password string) (*types.SessionId, error) {
+	_, err := mail.ParseAddress(email)
+	if err != nil {
+		return nil, errors.New("Invalid email")
+	}
+
+	err = checkPassword(password)
+	if err != nil {
+		return nil, err
+	}
+
+	userId, err := uuid.NewRandom()
+	if err != nil {
+		return nil, errors.Join(errors.New("Could not generate UUID for new user"), err)
+	}
+
+	salt := make([]byte, 16)
+	_, err = rand.Read(salt)
+	if err != nil {
+		return nil, errors.Join(errors.New("Could not generate salt for new user"), err)
+	}
+
+	hash := getHashPassword(password, salt)
+
+	_, err = db.Exec("INSERT INTO user (user_uuid, email, email_verified, is_admin, password, salt, created_at) VALUES (?, ?, FALSE, FALSE, ?, ?, datetime())", userId, email, hash, salt)
+	if err != nil {
+		// This does leak information about the email being in use, though not specifically stated
+		// It needs to be refacoteres to "If the email is not already in use, an email has been send to your address", or something
+		// The happy path, currently a redirect, needs to send the same message!
+		// Then it is also important to have the same compute time in both paths
+		// Otherwise an attacker could guess emails when comparing the response time
+		if strings.Contains(err.Error(), "email") {
+			return nil, errors.New("Bad Request")
+		}
+
+		return nil, errors.Join(errors.New("Could not insert user"), err)
+	}
+
+	sessionId, err := createSession(db, userId)
+	if err != nil {
+		return nil, err
+	}
+
+	// Send verification email as a goroutine
+	go sendVerificationEmail(db, userId.String(), email)
+	return sessionId, nil
+}
+
+func SignIn(db *sql.DB, email string, password string) (*types.SessionId, error) {
+	start := time.Now()
+
+	sessionId, err := internalSignIn(db, email, password)
+
+	duration := time.Since(start)
+	timeToWait := 100 - duration.Milliseconds()
+	// It is important to sleep for a while to prevent timing attacks
+	// If the email is correct, the server will calculate the hash, which will take some time
+	// This way an attacker could guess emails when comparing the response time
+	// Because of that, we cant use WriteHeader in the middle of the function. We have to wait until the end
+	// Unfortunatly this makes the code harder to read
+	time.Sleep(time.Duration(timeToWait) * time.Millisecond)
+
+	return sessionId, err
+}
+
+func internalSignIn(db *sql.DB, email string, password string) (*types.SessionId, error) {
+	var (
+		userId    uuid.UUID
+		savedHash []byte
+		salt      []byte
+	)
+
+	err := db.QueryRow("SELECT user_uuid, password, salt FROM user WHERE email = ?", email).Scan(&userId, &savedHash, &salt)
+	if err != nil {
+		return nil, err
+	}
+
+	new_hash := getHashPassword(password, salt)
+
+	if subtle.ConstantTimeCompare(new_hash, savedHash) == 0 {
+		return nil, errors.New("Invalid Request")
+	}
+
+	sessionId, err := createSession(db, userId)
+	if err != nil {
+		return nil, err
+	}
+
+	return sessionId, nil
+}
 
 func GetUserFromSessionId(db *sql.DB, sessionId types.SessionId) *types.User {
 	if sessionId == "" {
@@ -55,167 +146,31 @@ func GetUserFromSessionId(db *sql.DB, sessionId types.SessionId) *types.User {
 	}
 }
 
-// NOT TESTED
+func ValidateEmail(db *sql.DB, token string) error {
+	result, err := db.Exec(`
+		UPDATE user
+		SET email_verified = true, email_verified_at = datetime()
+		WHERE user_uuid = (
+			SELECT user_uuid
+			FROM user_token
+			WHERE type = "email_verify"
+			AND token = ?
+		);`, token)
 
-func HandleSignInPage(db *sql.DB) http.HandlerFunc {
-	return func(w http.ResponseWriter, r *http.Request) {
-		user := GetUserFromRequest(db, r)
-
-		if user == nil {
-			userComp := UserInfoComp(nil)
-			signIn := auth.SignInOrUpComp(true)
-			err := template.Layout(signIn, userComp).Render(r.Context(), w)
-
-			if err != nil {
-				utils.LogError("Failed to render sign in page", err)
-				http.Error(w, "Internal Server Error", http.StatusInternalServerError)
-			}
-
-		} else if !user.EmailVerified {
-			utils.DoRedirect(w, r, "/auth/verify")
-		} else {
-			utils.DoRedirect(w, r, "/")
-		}
+	if err != nil {
+		return errors.Join(errors.New("Could not update user on verify response"), err)
 	}
-}
 
-func HandleSignUpPage(db *sql.DB) http.HandlerFunc {
-	return func(w http.ResponseWriter, r *http.Request) {
-		user := GetUserFromRequest(db, r)
-
-		if user == nil {
-			userComp := UserInfoComp(nil)
-			signUpComp := auth.SignInOrUpComp(false)
-			err := template.Layout(signUpComp, userComp).Render(r.Context(), w)
-
-			if err != nil {
-				utils.LogError("Failed to render sign up page", err)
-				http.Error(w, "Internal Server Error", http.StatusInternalServerError)
-			}
-
-		} else if !user.EmailVerified {
-			utils.DoRedirect(w, r, "/auth/verify")
-		} else {
-			utils.DoRedirect(w, r, "/")
-		}
+	i, err := result.RowsAffected()
+	if err != nil {
+		return errors.Join(errors.New("Could not get rows affected on verify response"), err)
 	}
-}
 
-func HandleSignUpVerifyPage(db *sql.DB) http.HandlerFunc {
-	return func(w http.ResponseWriter, r *http.Request) {
-		user := GetUserFromRequest(db, r)
-		if user == nil {
-			utils.DoRedirect(w, r, "/auth/signin")
-		} else if user.EmailVerified {
-			utils.DoRedirect(w, r, "/")
-		} else {
-			userComp := UserInfoComp(user)
-			signIn := auth.VerifyComp()
-			err := template.Layout(signIn, userComp).Render(r.Context(), w)
-			if err != nil {
-				utils.LogError("Failed to render verify page", err)
-				http.Error(w, "Internal Server Error", http.StatusInternalServerError)
-			}
-		}
+	if i == 0 {
+		return errors.New("Token is invalid")
 	}
-}
 
-func HandleDeleteAccountPage(db *sql.DB) http.HandlerFunc {
-	return func(w http.ResponseWriter, r *http.Request) {
-		// An unverified email should be able to delete their account
-		user := GetUserFromRequest(db, r)
-		if user == nil {
-			utils.DoRedirect(w, r, "/auth/signin")
-		} else {
-			userComp := UserInfoComp(user)
-			comp := auth.DeleteAccountComp()
-			err := template.Layout(comp, userComp).Render(r.Context(), w)
-			if err != nil {
-				utils.LogError("Failed to render delete account page", err)
-				http.Error(w, "Internal Server Error", http.StatusInternalServerError)
-			}
-		}
-	}
-}
-
-func HandleSignUpVerifyResponsePage(db *sql.DB) http.HandlerFunc {
-	return func(w http.ResponseWriter, r *http.Request) {
-
-		token := r.URL.Query().Get("token")
-
-		if token == "" {
-			utils.DoRedirect(w, r, "/auth/verify")
-			return
-		}
-
-		result, err := db.Exec(`
-			UPDATE user
-			SET email_verified = true, email_verified_at = datetime()
-			WHERE user_uuid = (
-				SELECT user_uuid
-				FROM user_token
-				WHERE type = "email_verify"
-				AND token = ?
-			);
-		`, token)
-
-		if err != nil {
-			utils.LogError("Could not update user on verify response", err)
-			http.Error(w, "Internal Server Error", http.StatusInternalServerError)
-			return
-		}
-
-		i, err := result.RowsAffected()
-		if err != nil {
-			utils.LogError("Could not get rows affected on verify response", err)
-			http.Error(w, "Internal Server Error", http.StatusInternalServerError)
-			return
-		}
-
-		if i == 0 {
-			utils.DoRedirect(w, r, "/")
-		} else {
-			utils.DoRedirect(w, r, "/auth/signin")
-		}
-	}
-}
-
-func HandleChangePasswordPage(db *sql.DB) http.HandlerFunc {
-	return func(w http.ResponseWriter, r *http.Request) {
-
-		isPasswordReset := r.URL.Query().Has("token")
-
-		user := GetUserFromRequest(db, r)
-		if user == nil && !isPasswordReset {
-			utils.DoRedirect(w, r, "/auth/signin")
-		} else {
-			userComp := UserInfoComp(user)
-			comp := auth.ChangePasswordComp(isPasswordReset)
-			err := template.Layout(comp, userComp).Render(r.Context(), w)
-			if err != nil {
-				utils.LogError("Failed to render change password page", err)
-				http.Error(w, "Internal Server Error", http.StatusInternalServerError)
-			}
-		}
-	}
-}
-
-func HandleResetPasswordPage(db *sql.DB) http.HandlerFunc {
-	return func(w http.ResponseWriter, r *http.Request) {
-
-		user := GetUserFromRequest(db, r)
-		if user != nil {
-			utils.DoRedirect(w, r, "/auth/signin")
-		} else {
-			userComp := UserInfoComp(nil)
-			comp := auth.ResetPasswordComp()
-			err := template.Layout(comp, userComp).Render(r.Context(), w)
-			if err != nil {
-				utils.LogError("Failed to render change password page", err)
-				http.Error(w, "Internal Server Error", http.StatusInternalServerError)
-			}
-		}
-	}
+	return nil
 }
 
 func UserInfoComp(user *types.User) templ.Component {
@@ -227,124 +182,6 @@ func UserInfoComp(user *types.User) templ.Component {
 	}
 }
 
-func HandleSignUpComp(db *sql.DB) http.HandlerFunc {
-	return func(w http.ResponseWriter, r *http.Request) {
-		var email = r.FormValue("email")
-		var password = r.FormValue("password")
-
-		_, err := mail.ParseAddress(email)
-		if err != nil {
-			http.Error(w, "Invalid email", http.StatusBadRequest)
-			return
-		}
-
-		err = checkPassword(password)
-		if err != nil {
-			http.Error(w, err.Error(), http.StatusBadRequest)
-			return
-		}
-
-		userId, err := uuid.NewRandom()
-		if err != nil {
-			utils.LogError("Could not generate UUID", err)
-			auth.Error("Internal Server Error").Render(r.Context(), w)
-			return
-		}
-
-		salt := make([]byte, 16)
-		_, err = rand.Read(salt)
-		if err != nil {
-			utils.LogError("Could not generate salt", err)
-			auth.Error("Internal Server Error").Render(r.Context(), w)
-			return
-		}
-
-		hash := getHashPassword(password, salt)
-
-		_, err = db.Exec("INSERT INTO user (user_uuid, email, email_verified, is_admin, password, salt, created_at) VALUES (?, ?, FALSE, FALSE, ?, ?, datetime())", userId, email, hash, salt)
-		if err != nil {
-			// This does leak information about the email being in use, though not specifically stated
-			// It needs to be refacoteres to "If the email is not already in use, an email has been send to your address", or something
-			// The happy path, currently a redirect, needs to send the same message!
-			// Then it is also important to have the same compute time in both paths
-			// Otherwise an attacker could guess emails when comparing the response time
-			if strings.Contains(err.Error(), "email") {
-				auth.Error("Bad Request").Render(r.Context(), w)
-				return
-			}
-
-			utils.LogError("Could not insert user", err)
-			auth.Error("Internal Server Error").Render(r.Context(), w)
-			return
-		}
-
-		result := tryCreateSessionAndSetCookie(r, w, db, userId)
-		if !result {
-			return
-		}
-
-		// Send verification email as a goroutine
-		go sendVerificationEmail(db, userId.String(), email)
-
-		utils.DoRedirect(w, r, "/auth/verify")
-	}
-}
-
-func HandleSignInComp(db *sql.DB) http.HandlerFunc {
-	return func(w http.ResponseWriter, r *http.Request) {
-		var email = r.FormValue("email")
-		var password = r.FormValue("password")
-
-		var result bool = true
-		start := time.Now()
-
-		var (
-			userId        uuid.UUID
-			savedHash     []byte
-			salt          []byte
-			emailVerified bool
-		)
-		err := db.QueryRow("SELECT user_uuid, password, salt, email_verified FROM user WHERE email = ?", email).Scan(&userId, &savedHash, &salt, &emailVerified)
-		if err != nil {
-			result = false
-		}
-
-		if result {
-			new_hash := getHashPassword(password, salt)
-
-			if subtle.ConstantTimeCompare(new_hash, savedHash) == 0 {
-				result = false
-			}
-		}
-
-		if result {
-			result := tryCreateSessionAndSetCookie(r, w, db, userId)
-			if !result {
-				return
-			}
-		}
-
-		duration := time.Since(start)
-		timeToWait := 100 - duration.Milliseconds()
-		// It is important to sleep for a while to prevent timing attacks
-		// If the email is correct, the server will calculate the hash, which will take some time
-		// This way an attacker could guess emails when comparing the response time
-		// Because of that, we cant use WriteHeader in the middle of the function. We have to wait until the end
-		// Unfortunatly this makes the code harder to read
-		time.Sleep(time.Duration(timeToWait) * time.Millisecond)
-
-		if result {
-			if !emailVerified {
-				utils.DoRedirect(w, r, "/auth/verify")
-			} else {
-				utils.DoRedirect(w, r, "/")
-			}
-		} else {
-			auth.Error("Invalid email or password").Render(r.Context(), w)
-		}
-	}
-}
-
 func HandleSignOutComp(db *sql.DB) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		user := GetUserFromRequest(db, r)
@@ -651,6 +488,27 @@ func sendVerificationEmail(db *sql.DB, userId string, email string) {
 	utils.SendMail(email, "Welcome to ME-FIT", w.String())
 }
 
+func createSession(db *sql.DB, user_uuid uuid.UUID) (*types.SessionId, error) {
+	sessionId, err := utils.RandomToken()
+	if err != nil {
+		return nil, errors.Join(errors.New("Could not generate session ID"), err)
+	}
+
+	// Delete old inactive sessions
+	_, err = db.Exec("DELETE FROM session WHERE created_at < datetime('now','-8 hours') AND user_uuid = ?", user_uuid)
+	if err != nil {
+		utils.LogError("Could not delete old sessions", err)
+	}
+
+	_, err = db.Exec("INSERT INTO session (session_id, user_uuid, created_at) VALUES (?, ?, datetime())", sessionId, user_uuid)
+	if err != nil {
+		return nil, errors.Join(errors.New("Could not insert session"), err)
+	}
+
+	sessionIdType := types.SessionId(sessionId)
+	return &sessionIdType, nil
+}
+
 func tryCreateSessionAndSetCookie(r *http.Request, w http.ResponseWriter, db *sql.DB, user_uuid uuid.UUID) bool {
 	sessionId, err := utils.RandomToken()
 	if err != nil {