Improve compatibility with ancient browsers

backend/main.go

@@ -43,6 +43,11 @@ type ServerConfig struct {
 	Started chan bool
 }
 
+const DefaultDomain = "localhost:8080"
+
+// The domain that the server is reachable at.
+var domain = DefaultDomain
+
 func getUsers(c *gin.Context) {
 	users, err := db.GetUsers()
 	if err != nil {
@@ -706,5 +711,10 @@ func main() {
 		config.Datasource = "allowance_planner.db3"
 		log.Printf("Warning: No DB_PATH set, using default of %s", config.Datasource)
 	}
+	domain = os.Getenv("DOMAIN")
+	if domain == "" {
+		domain = DefaultDomain
+		log.Printf("Warning: No DOMAIN set, using default of %s", domain)
+	}
 	start(context.Background(), &config)
 }

backend/web.go

@@ -3,6 +3,7 @@ package main
 import (
 	"errors"
 	"github.com/gin-gonic/gin"
+	"log"
 	"net/http"
 	"strconv"
 )
@@ -26,11 +27,17 @@ func loadWebEndpoints(router *gin.Engine) {
 	router.GET("/completeAllowance", renderCompleteAllowance)
 }
 
+func redirectToPage(c *gin.Context, page string) {
+	scheme := c.Request.URL.Scheme
+	c.Redirect(http.StatusSeeOther, scheme+domain+page)
+}
+
 func renderLogin(c *gin.Context) {
 	if c.Query("user") != "" {
-		c.SetCookie("user", c.Query("user"), 3600, "/", "localhost", false, true)
+		log.Println("Set cookie for user:", c.Query("user"))
+		c.SetCookie("user", c.Query("user"), 3600, "", "", false, true)
 	}
-	c.Redirect(http.StatusFound, "/")
+	redirectToPage(c, "/")
 }
 
 func renderIndex(c *gin.Context) {
@@ -149,6 +156,7 @@ func renderCompleteAllowance(c *gin.Context) {
 
 func getCurrentUser(c *gin.Context) *int {
 	currentUserStr, err := c.Cookie("user")
+	log.Println("Cookie string:", currentUserStr)
 	if errors.Is(err, http.ErrNoCookie) {
 		renderNoUser(c)
 		return nil