package email import ( "fmt" "net/smtp" "os" "strconv" ) type Service struct { smtpServer string smtpPort int smtpUser string smtpPassword string from string } func NewService() *Service { smtpServer := os.Getenv("SMTP_SERVER") if smtpServer == "" { smtpServer = "localhost" } smtpPort := os.Getenv("SMTP_PORT") if smtpPort == "" { smtpPort = "587" } port, err := strconv.Atoi(smtpPort) if err != nil { port = 587 } smtpUser := os.Getenv("SMTP_USER") if smtpUser == "" { smtpUser = "noreply@rideaware.app" } smtpPassword := os.Getenv("SMTP_PASSWORD") from := os.Getenv("SENDER_EMAIL") if from == "" { from = "noreply@rideaware.app" } return &Service{ smtpServer: smtpServer, smtpPort: port, smtpUser: smtpUser, smtpPassword: smtpPassword, from: from, } } func (s *Service) sendEmail(to []string, subject, htmlBody string) error { // Create message headers := fmt.Sprintf("From: %s\r\nTo: %s\r\nSubject: %s\r\nMIME-Version: 1.0\r\nContent-Type: text/html; charset=\"UTF-8\"\r\n\r\n", s.from, to[0], subject, ) message := headers + htmlBody // SMTP server address addr := fmt.Sprintf("%s:%d", s.smtpServer, s.smtpPort) // Create SMTP authentication auth := smtp.PlainAuth("", s.smtpUser, s.smtpPassword, s.smtpServer) // Send email err := smtp.SendMail(addr, auth, s.from, to, []byte(message)) if err != nil { return fmt.Errorf("failed to send email: %w", err) } return nil } func (s *Service) SendPasswordResetEmail(email, username, resetLink string) error { subject := "Reset Your RideAware Password" htmlBody := fmt.Sprintf(`

Hi %s,

We received a request to reset your password. Click the button below to create a new password:

Note: This link will expire in 1 hour.

If you didn't request this, you can safely ignore this email.

`, username, resetLink) return s.sendEmail([]string{email}, subject, htmlBody) } func (s *Service) SendWelcomeEmail(email, username string) error { subject := "Welcome to RideAware" htmlBody := fmt.Sprintf(`

Hi %s,

Your account has been created successfully! 🚀

You're now ready to:

Track your cycling performance
Manage your equipment
Create custom training zones
Plan structured workouts

Get started by logging in to your account and setting up your profile.

Go to RideAware

`, username) return s.sendEmail([]string{email}, subject, htmlBody) } func (s *Service) SendNewsletterEmail(email, subject, htmlBody string) error { return s.sendEmail([]string{email}, subject, htmlBody) }

Password Reset Request

Welcome to RideAware