1package main
  2
  3import (
  4	"html/template"
  5	"log"
  6	"net/http"
  7	"regexp"
  8)
  9
 10// PageData holds common data passed to templates
 11type PageData struct {
 12	Title       string
 13	ServiceName string
 14	Content     interface{}
 15}
 16
 17// home displays the buylater.email landing page
 18func home(w http.ResponseWriter, r *http.Request) {
 19	w.Header().Add("Server", "buylater.email")
 20
 21	// Parse templates with inheritance
 22	ts, err := template.ParseFiles(
 23		"./ui/html/layouts/base.tmpl",
 24		"./ui/html/pages/home.tmpl",
 25	)
 26	if err != nil {
 27		log.Println(err.Error())
 28		http.Error(w, "Internal Server Error", 500)
 29		return
 30	}
 31
 32	// Prepare template data
 33	data := PageData{
 34		Title:       "Home",
 35		ServiceName: "buylater.email",
 36		Content:     nil,
 37	}
 38
 39	// Execute template - specify the base template name
 40	err = ts.ExecuteTemplate(w, "base", data)
 41	if err != nil {
 42		log.Println(err.Error())
 43		http.Error(w, "Internal Server Error", 500)
 44	}
 45}
 46
 47// submitForm displays the email submission form for scheduling purchase reminders
 48func submitForm(w http.ResponseWriter, r *http.Request) {
 49	w.Header().Add("Server", "buylater.email")
 50
 51	// Parse templates with inheritance
 52	ts, err := template.ParseFiles(
 53		"./ui/html/layouts/base.tmpl",
 54		"./ui/html/pages/submit.tmpl",
 55	)
 56	if err != nil {
 57		log.Println(err.Error())
 58		http.Error(w, "Internal Server Error", 500)
 59		return
 60	}
 61
 62	// Prepare template data
 63	data := PageData{
 64		Title:       "Submit",
 65		ServiceName: "buylater.email",
 66		Content:     nil,
 67	}
 68
 69	// Execute template - specify the base template name
 70	err = ts.ExecuteTemplate(w, "base", data)
 71	if err != nil {
 72		log.Println(err.Error())
 73		http.Error(w, "Internal Server Error", 500)
 74	}
 75}
 76
 77// processSubmit handles the form submission and schedules the email reminder
 78func processSubmit(w http.ResponseWriter, r *http.Request) {
 79	w.Header().Add("Server", "buylater.email")
 80	w.WriteHeader(http.StatusCreated)
 81	w.Write([]byte("Form submitted! Check your email for a confirmation link to activate your reminder."))
 82}
 83
 84// confirmWithToken handles magic link confirmation with token validation
 85func confirmWithToken(w http.ResponseWriter, r *http.Request) {
 86	token := r.PathValue("token")
 87
 88	if !isValidToken(token) {
 89		w.Header().Add("Server", "buylater.email")
 90		http.NotFound(w, r)
 91		return
 92	}
 93
 94	w.Header().Add("Server", "buylater.email")
 95	w.WriteHeader(http.StatusOK)
 96	w.Write([]byte("Email Confirmed! Your purchase reminder has been activated via magic link."))
 97}
 98
 99// isValidToken validates that the token is alphanumeric and at least 32 characters
100func isValidToken(token string) bool {
101	if len(token) < 32 {
102		return false
103	}
104
105	// Check if token contains only alphanumeric characters
106	matched, _ := regexp.MatchString("^[a-zA-Z0-9]+$", token)
107	return matched
108}
109
110// about displays information about the buylater.email service
111func about(w http.ResponseWriter, r *http.Request) {
112	w.Header().Add("Server", "buylater.email")
113	w.Write([]byte("About - buylater.email helps you delay purchases and buy more intentionally"))
114}