M README → README

@@ -1,2 +1,11 @@ 
    nothing to see here
 --------------------------
+
+
+Set the following environment variables:
+
+    SMTP_FROM=forms@example.com
+    SMTP_PASS=garbageday
+    SMTP_SERVER=mail.example.com
+    SMTP_PORT=587
+    SMTP_TO=inbox@example.com

M main.go → main.go

@@ -4,16 +4,30 @@ import (
 	"html/template"
 	"log"
 	"net/http"
+	"net/smtp"
+	"os"
 )
 
 func main() {
 	http.HandleFunc("/", rootHandler)
+	http.HandleFunc("/confirmation", confirmationHandler)
 
 	log.Fatal(http.ListenAndServe(":8080", nil))
 }
 
 func rootHandler(w http.ResponseWriter, r *http.Request) {
-	render(w, "templates/form.html", nil)
+	switch r.Method {
+	case "GET":
+		render(w, "templates/form.html", nil)
+	case "POST":
+		// message := r.info or whatever
+		sendMessage()
+		// re-route to /confirmation
+	}
+}
+
+func confirmationHandler(w http.ResponseWriter, r *http.Request) {
+	render(w, "templates/confirmation.html", nil)
 }
 
 func render(w http.ResponseWriter, filename string, data interface{}) {
@@ -29,3 +43,18 @@ log.Println(err)
 		http.Error(w, "Sorry, something went wrong", http.StatusInternalServerError)
 	}
 }
+
+func sendMessage() {
+	auth := smtp.PlainAuth("", os.Getenv("SMTP_FROM"), os.Getenv("SMTP_PASS"), os.Getenv("SMTP_SERVER"))
+
+	to := []string{os.Getenv("SMTP_TO")}
+	msg := []byte("From: " + os.Getenv("SMTP_FROM") + "\r\n" +
+        "To: " + os.Getenv("SMTP_TO") + "\r\n" +
+		"Subject: Form completion\r\n" +
+		"\r\n" +
+		"Body.\r\n")
+	err := smtp.SendMail(os.Getenv("SMTP_SERVER") + ":" + os.Getenv("SMTP_PORT"), auth, os.Getenv("SMTP_FROM"), to, msg)
+	if err != nil {
+		log.Fatal(err)
+	}
+}