initial thai translation

th/code/src/apps/ch.4.4/main.go

@@ -0,0 +1,54 @@
+// Example code for Chapter 3.2 from "Build Web Application with Golang"
+// Purpose: Shows how to prevent duplicate submissions by using tokens
+// Example code for Chapter 4.4 based off the code from Chapter 4.2
+// Run `go run main.go` then access http://localhost:9090
+package main
+
+import (
+	"apps/ch.4.4/nonce"
+	"apps/ch.4.4/validator"
+	"html/template"
+	"log"
+	"net/http"
+)
+
+const (
+	PORT     = "9090"
+	HOST_URL = "http://localhost:" + PORT
+)
+
+var submissions nonce.Nonces
+var t *template.Template
+
+func index(w http.ResponseWriter, r *http.Request) {
+	http.Redirect(w, r, HOST_URL+"/profile", http.StatusTemporaryRedirect)
+}
+func profileHandler(w http.ResponseWriter, r *http.Request) {
+	t.ExecuteTemplate(w, "profile", submissions.NewNonce())
+}
+func checkProfile(w http.ResponseWriter, r *http.Request) {
+	var errs validator.Errors
+	r.ParseForm()
+	token := r.Form.Get("token")
+	if err := submissions.CheckThenMarkToken(token); err != nil {
+		errs = validator.Errors{[]error{err}}
+	} else {
+		p := validator.ProfilePage{&r.Form}
+		errs = p.GetErrors()
+	}
+	t.ExecuteTemplate(w, "submission", errs)
+}
+func init() {
+	submissions = nonce.New()
+	t = template.Must(template.ParseFiles("profile.gtpl", "submission.gtpl"))
+}
+func main() {
+	http.HandleFunc("/", index)
+	http.HandleFunc("/profile", profileHandler)
+	http.HandleFunc("/checkprofile", checkProfile)
+
+	err := http.ListenAndServe(":"+PORT, nil) // setting listening port
+	if err != nil {
+		log.Fatal("ListenAndServe: ", err)
+	}
+}