func main() {
err := godotenv.Load()
if err != nil {
log.Println("Error loading .env file")
}
// Create a new instance of Frodo
App := Frodo.New()
// Add the root route
App.Get("/", func(w http.ResponseWriter, r *Frodo.Request) {
w.Write([]byte("Hello World!!!"))
})
App.Post("/", &controller.Home{}, Frodo.Use{
Method: "Index",
})
// Specify PORT as an environment variable
// Necessary for running on Heroku
port := "3102"
if os.Getenv("PORT") != "" {
port = os.Getenv("PORT")
}
App.ServeOnPort(port)
}
func init() {
godotenv.Load()
}
// Index defines the Post request handler
func (h *Home) Index(w http.ResponseWriter, r *Frodo.Request) {
err := godotenv.Load()
if err != nil {
log.Println("Error loading .env file")
}
// Decode the JSON from the POST request body
decoder := json.NewDecoder(r.Body)
// Initialize a new newsletter struct
var t newsletter
decodeErr := decoder.Decode(&t)
if decodeErr != nil {
panic(decodeErr)
}
recipients := t.Subscribers
sender := os.Getenv("SENDER_ADDRESS")
workerCount := 8
debug := true
mailer := mail.NewMailer(
os.Getenv("SMTP_USERNAME"),
os.Getenv("SMTP_PASSWORD"),
os.Getenv("SMTP_HOST"),
os.Getenv("SMTP_PORT"),
)
jobs := make(chan string, len(recipients))
success := make(chan *email.Email)
fail := make(chan error)
htmlContent := t.Content
subject := t.Title
// Start workers
for i := 0; i < workerCount; i++ {
go func() {
for recipient := range jobs {
sendMail(sender, recipient, subject, htmlContent, &mailer, debug, success, fail)
}
}()
}
// Send jobs to workers
for _, recipient := range recipients {
jobs <- recipient
}
close(jobs)
for i := 0; i < len(recipients); i++ {
select {
case msg := <-success:
if debug {
fmt.Printf("\rEmailed recipient %d of %d...", i+1, len(recipients))
} else {
bytes, err := msg.Bytes()
if err != nil {
fmt.Printf("Error parsing email: %v", err)
}
fmt.Printf("%s\n\n\n", string(bytes))
}
case err := <-fail:
fmt.Fprintln(os.Stderr, "\nError sending email:", err.Error())
os.Exit(2)
}
}
fmt.Println()
w.Write([]byte("Newsletter Successfully Sent!"))
}