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package utils |
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import ( |
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"crypto/rand" |
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"crypto/tls" |
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"encoding/hex" |
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"fmt" |
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"github.com/joho/godotenv" |
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gomail "gopkg.in/mail.v2" |
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"log" |
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"math/big" |
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"os" |
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"strconv" |
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) |
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// GenerateSecretCode generates a secret code |
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func GenerateSecretCode(length int) string { |
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// Generate a random string of letters and digits |
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b := make([]byte, length) |
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if _, err := rand.Read(b); err != nil { |
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return "" |
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} |
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return hex.EncodeToString(b) |
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} |
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// GenerateRandomDigit GetRandomNumber returns a random number between min and max |
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func GenerateRandomDigit(min, max int64) (string, error) { |
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// Set max and min value |
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randomNumber, err := rand.Int(rand.Reader, big.NewInt(max-min)) |
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if err != nil { |
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return "0", err |
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} |
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return strconv.FormatInt(randomNumber.Int64()+min, 10), nil |
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} |
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// GetSmtpConfig returns a gomail.Dialer and gomail.Message |
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func getSMTPConfig() (*gomail.Dialer, *gomail.Message) { |
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// Load the .env file |
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err := godotenv.Load() |
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if err != nil { |
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log.Fatal("Error loading .env file") |
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} |
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password := os.Getenv("SMTP_PASSWORD") |
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host := os.Getenv("SMTP_HOST") |
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port, _ := strconv.Atoi(os.Getenv("SMTP_PORT")) |
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from := os.Getenv("SMTP_USER") |
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// Settings for SMTP server |
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d := gomail.NewDialer(host, port, from, password) |
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d.TLSConfig = &tls.Config{ |
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InsecureSkipVerify: false, |
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MinVersion: tls.VersionTLS12, |
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MaxVersion: 0, |
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ServerName: host, |
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} |
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m := gomail.NewMessage() |
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m.SetHeader("From", from) |
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return d, m |
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} |
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// SendEmail sends an email to the given address |
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func SendEmail(email, subject, body string) error { |
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// Send email |
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d, m := getSMTPConfig() |
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// Set E-Mail receivers |
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m.SetHeader("To", email) |
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// Set E-Mail subject |
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m.SetHeader("Subject", subject) |
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// Set E-Mail body. You can set plain text or html with text/html |
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m.SetBody("text/plain", body) |
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// Now send E-Mail |
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if err := d.DialAndSend(m); err != nil { |
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fmt.Println(err) |
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panic(err) |
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} |
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return nil |
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} |
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memnix /
memnix-rest
