70 lines
1.5 KiB
Go
70 lines
1.5 KiB
Go
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package emailing
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import (
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"bytes"
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"fmt"
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"html/template"
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"github.com/spf13/viper"
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gomail "gopkg.in/mail.v2"
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)
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type Mailer struct {
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TemplatesDir string
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TemplatesConfig *viper.Viper
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SMTPConfig
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}
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type SMTPConfig struct {
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Host string
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Port int
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Username string
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Password string
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}
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func NewMailer(templates_dir string, tplcfg *viper.Viper, smtpconfig *viper.Viper) (*Mailer, error) {
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return &Mailer{
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TemplatesDir: templates_dir,
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TemplatesConfig: tplcfg,
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SMTPConfig: SMTPConfig{
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Host: smtpconfig.GetString("host"),
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Port: smtpconfig.GetInt("port"),
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Username: smtpconfig.GetString("username"),
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Password: smtpconfig.GetString("password"),
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},
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}, nil
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}
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func (m *Mailer) Send(emailcfg string, to string, data any) error {
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cfg := m.TemplatesConfig.Sub(emailcfg)
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files := cfg.GetStringSlice("files")
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prefixed_files := []string{}
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for _, f := range files {
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prefixed_files = append(prefixed_files, m.TemplatesDir+f)
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}
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t := template.Must(template.ParseFiles(prefixed_files...))
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buf := new(bytes.Buffer)
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if err := t.ExecuteTemplate(buf, "main", data); err != nil {
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return err
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}
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body := buf.String()
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fmt.Println(body)
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message := gomail.NewMessage()
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message.SetHeader("From", m.SMTPConfig.Username)
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message.SetHeader("To", to)
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message.SetHeader("Subject", cfg.GetString("subject"))
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message.SetBody("text/html", body)
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d := gomail.NewDialer(m.SMTPConfig.Host, m.SMTPConfig.Port, m.SMTPConfig.Username, m.SMTPConfig.Password)
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if err := d.DialAndSend(message); err != nil {
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return err
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}
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return nil
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}
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