Add order total calculation and update template display

internal/models/data.go

@@ -23,3 +23,11 @@ type Order struct {
 	Paid     int // increments of 0.01
 	Cakes    []Cake
 }
+
+func (o *Order) Total() int {
+	out := o.Paid * (-1)
+	for _, e := range o.Cakes {
+		out += e.Price * e.Amount
+	}
+	return out
+}

internal/server/get.go

@@ -8,7 +8,7 @@ import (
 	"github.com/Bronku/iroon/internal/models"
 )
 
-func (h *Server) index(r *http.Request) (any, int, error) {
+func (h *Server) orders(r *http.Request) (any, int, error) {
 	data, err := h.s.GetOrders()
 	return data, http.StatusOK, err
 }

internal/server/http.go

@@ -0,0 +1,9 @@
+package server
+
+import "net/http"
+
+func (s *Server) redirect(path string, code int) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		http.Redirect(w, r, path, code)
+	}
+}

internal/server/server.go

@@ -20,7 +20,8 @@ func (h *Server) loadHandler() {
 	mux := http.NewServeMux()
 
 	mux.HandleFunc("GET /order/", h.render(h.order, "order.html"))
-	mux.HandleFunc("GET /", h.render(h.index, "index.html"))
+	mux.HandleFunc("GET /", h.redirect("/orders", http.StatusSeeOther))
+	mux.HandleFunc("GET /orders", h.render(h.orders, "index.html"))
 	mux.HandleFunc("POST /order/", h.render(h.postOrder, "confirmation.html"))
 	mux.HandleFunc("GET /cakes", h.render(h.cakes, "cakes.html"))
 	mux.HandleFunc("GET /cake/", h.render(h.cake, "cake.html"))

internal/server/templates/index.html

@@ -16,7 +16,7 @@
             <th>Date</th>
             <th>Accepted</th>
             <th>Status</th>
-            <th>Paid</th>
+            <th>Total</th>
         </tr>
         {{range .}}
         <tr>
@@ -28,7 +28,7 @@
             <th>{{.Date.Format "2006-01-02"}}</th>
             <th>{{.Accepted.Format "2006-01-02"}}</th>
             <th>{{.Status}}</th>
-            <th>{{.Paid}}</th>
+            <th>{{.Total}}</th>
         </tr>
         {{end}}
     </table>