logging, and handler struct

form.html

@@ -14,6 +14,11 @@
             <input type="text" name="surname" value="{{.Surname}}">
             <label>phone</label>
             <input type="tel" name="phone" value="{{.Phone}}">
+            <label>location</label>
+            <select name="location">
+                <option value="Kartuzy">Kartuzy</option>
+                <option value="Somonino">Somonino</option>
+            </select>
             <label>date</label>
             <input type="date" name="date" value="{{.Date}}">
         </div>

main.go

@@ -3,49 +3,54 @@ package main
 import (
 	"fmt"
 	"html/template"
+	"log"
 	"net/http"
+	"time"
 
 	_ "github.com/mattn/go-sqlite3"
 )
 
-func form(w http.ResponseWriter, r *http.Request) {
-	fmt.Println("received a get request at: ", r.URL.String())
-	tmpl, err := template.ParseFiles("form.html")
-	if err != nil {
-		w.WriteHeader(http.StatusInternalServerError)
-		return
+type cake struct {
+	Name   string
+	ID     int
+	Price  int
+	Amount int
+}
+
+type order struct {
+	ID       int
+	Name     string
+	Surname  string
+	Phone    string
+	Location string
+	Date     time.Time
+	Paid     int // increments of 0.01
+	Cakes    []cake
+}
+
+type handler struct {
+	tmpl   *template.Template
+	cakes  []cake
+	orders []order
+}
+
+func (h *handler) form(w http.ResponseWriter, r *http.Request) {
+	data := order{
+		Name:     "",
+		Surname:  "",
+		Phone:    "",
+		Location: "",
+		Date:     time.Now(),
+		Cakes:    h.cakes,
 	}
-	type cake struct {
-		Name   string
-		ID     int
-		Price  int
-		Amount int
-	}
-	type tmplData struct {
-		Name    string
-		Surname string
-		Phone   string
-		Date    string
-		Cakes   []cake
-	}
-	data := tmplData{
-		Name:    "",
-		Surname: "",
-		Phone:   "",
-		Date:    "",
-		Cakes:   make([]cake, 0),
-	}
-	data.Cakes = append(data.Cakes, cake{"Hello", 0, 100, 0})
-	data.Cakes = append(data.Cakes, cake{"World", 1, 120, 0})
 	w.Header().Set("content-type", "text/html")
-	err = tmpl.Execute(w, data)
+	err := h.tmpl.ExecuteTemplate(w, "form.html", data)
 	if err != nil {
 		fmt.Println("error executing the template: ", err)
 	}
 }
 
-func addOrder(w http.ResponseWriter, r *http.Request) {
-	fmt.Println("received a post request at: ", r.URL.String())
+func (h *handler) addOrder(w http.ResponseWriter, r *http.Request) {
 	err := r.ParseForm()
 	if err != nil {
 		fmt.Println("can't parse the form")
@@ -58,33 +63,46 @@ func addOrder(w http.ResponseWriter, r *http.Request) {
 	w.Write([]byte("accepted <a href='/'>back</a>"))
 }
 
-func index(w http.ResponseWriter, r *http.Request) {
-	fmt.Println("received a get request at: ", r.URL.String())
-	tmpl, err := template.ParseFiles("index.html")
-	if err != nil {
-		w.WriteHeader(http.StatusInternalServerError)
-		return
-	}
-
-	type tmplData struct {
-		ID      int
-		Name    string
-		Surname string
-	}
-	data := make([]tmplData, 0)
-	data = append(data, tmplData{0, "Jan", "Kowalski"})
-	data = append(data, tmplData{1, "Jakub", "Bronk"})
-
+func (h *handler) index(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("content-type", "text/html")
-	err = tmpl.Execute(w, data)
+	err := h.tmpl.ExecuteTemplate(w, "index.html", h.orders)
 	if err != nil {
 		fmt.Println("error executing the template: ", err)
 	}
 }
 
+func logger(in http.HandlerFunc) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		start := time.Now()
+		log := fmt.Sprint(r.Method, " ", r.URL.String())
+		in(w, r)
+		log += fmt.Sprint(" ", time.Since(start))
+		fmt.Println(log)
+	}
+}
+
 func main() {
-	http.HandleFunc("GET /form", form)
-	http.HandleFunc("GET /", index)
-	http.HandleFunc("POST /", addOrder)
+	var h handler
+	templates, err := template.ParseFiles("index.html", "form.html")
+	if err != nil {
+		log.Fatal("can't parse templates: ", err)
+	}
+
+	h.tmpl = templates
+
+	orders := make([]order, 0)
+	orders = append(orders, order{0, "Albert", "Camus", "123456789", "Kartuzy", time.Now().AddDate(0, 0, 7), 0, nil})
+	orders = append(orders, order{1, "George", "Orwell", "", "Kartuzy", time.Now().AddDate(0, 1, 0), 0, nil})
+	orders = append(orders, order{2, "Karl", "Marx", "0700", "Somonino", time.Now(), 0, nil})
+	h.orders = orders
+
+	cakes := make([]cake, 0)
+	cakes = append(cakes, cake{"Sernik", 0, 120, 0})
+	cakes = append(cakes, cake{"Malinowa chmurka", 1, 120, 0})
+	h.cakes = cakes
+
+	http.HandleFunc("GET /form", logger(h.form))
+	http.HandleFunc("GET /", logger(h.index))
+	http.HandleFunc("POST /", logger(h.addOrder))
 	http.ListenAndServe(":8080", nil)
 }