package email import ( "crypto/tls" "fmt" "log" "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" } log.Printf("📧 Email service initialized: %s@%s:%d", smtpUser, smtpServer, port) return &Service{ smtpServer: smtpServer, smtpPort: port, smtpUser: smtpUser, smtpPassword: smtpPassword, from: from, } } func (s *Service) sendEmail(to []string, subject, htmlBody string) error { log.Printf("📧 Preparing to send email to: %s (Subject: %s)", to[0], subject) // 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) log.Printf("📧 Connecting to SMTP: %s", addr) // TLS configuration tlsConfig := &tls.Config{ ServerName: s.smtpServer, } // Create connection conn, err := tls.Dial("tcp", addr, tlsConfig) if err != nil { log.Printf("❌ TLS connection failed: %v", err) return fmt.Errorf("failed to connect to SMTP server: %w", err) } defer conn.Close() log.Printf("📧 TLS connection established") // Create SMTP client client, err := smtp.NewClient(conn, s.smtpServer) if err != nil { log.Printf("❌ SMTP client creation failed: %v", err) return fmt.Errorf("failed to create SMTP client: %w", err) } defer client.Close() log.Printf("📧 SMTP client created") // Authenticate auth := smtp.PlainAuth("", s.smtpUser, s.smtpPassword, s.smtpServer) if err = client.Auth(auth); err != nil { log.Printf("❌ SMTP authentication failed: %v", err) return fmt.Errorf("SMTP authentication failed: %w", err) } log.Printf("📧 SMTP authentication successful") // Send email if err = client.Mail(s.from); err != nil { log.Printf("❌ SMTP Mail command failed: %v", err) return fmt.Errorf("SMTP Mail command failed: %w", err) } if err = client.Rcpt(to[0]); err != nil { log.Printf("❌ SMTP Rcpt command failed: %v", err) return fmt.Errorf("SMTP Rcpt command failed: %w", err) } w, err := client.Data() if err != nil { log.Printf("❌ SMTP Data command failed: %v", err) return fmt.Errorf("SMTP Data command failed: %w", err) } _, err = w.Write([]byte(message)) if err != nil { log.Printf("❌ Writing email body failed: %v", err) return fmt.Errorf("writing email body failed: %w", err) } err = w.Close() if err != nil { log.Printf("❌ Closing email data failed: %v", err) return fmt.Errorf("closing email data failed: %w", err) } client.Quit() log.Printf("✅ Email sent successfully to: %s", to[0]) return nil } func (s *Service) SendPasswordResetEmail(email, username, resetLink string) error { log.Printf("🔑 Sending password reset email to: %s", email) 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 { log.Printf("👋 Sending welcome email to: %s", email) 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 { log.Printf("📬 Sending newsletter email to: %s", email) return s.sendEmail([]string{email}, subject, htmlBody) }

Password Reset Request

Welcome to RideAware