58 lines
1.1 KiB
Go
58 lines
1.1 KiB
Go
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package smtpservice
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import (
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"net/smtp"
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"os"
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"strings"
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"sync"
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)
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type SMTP struct {
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Host string
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Port string
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Username string
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Password string
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From string
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}
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var smtpInstance *SMTP
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var once sync.Once
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func New() *SMTP {
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return &SMTP{
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Host: os.Getenv("SMTP_HOST"),
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Port: os.Getenv("SMTP_PORT"),
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Username: os.Getenv("SMTP_USERNAME"),
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Password: os.Getenv("SMTP_PASSWORD"),
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From: os.Getenv("SMTP_FROM"),
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}
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}
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func GetInstance() *SMTP {
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once.Do(func() {
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smtpInstance = New()
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})
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return smtpInstance
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}
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func (s *SMTP) SendEmail(to, subject, body string) error {
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msgString := "From: " + s.From + "\r\n" +
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"To: " + to + "\r\n" +
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"Subject: " + subject + "\r\n" +
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"MIME-Version: 1.0\r\n" +
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"Content-Type: text/html; charset=UTF-8\r\n" +
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"\r\n" +
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body
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msg := []byte(msgString)
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addr := s.Host + ":" + s.Port
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if s.Password == "" || s.Username == "" {
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return smtp.SendMail(addr, nil, s.From, strings.Split(to, ","), msg)
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} else {
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auth := smtp.PlainAuth("", s.Username, s.Password, s.Host)
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return smtp.SendMail(addr, auth, s.From, strings.Split(to, ","), msg)
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}
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}
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