89 lines
1.9 KiB
Go
89 lines
1.9 KiB
Go
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package main
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import (
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"bytes"
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"embed"
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"fmt"
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"text/template"
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"time"
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mail "github.com/xhit/go-simple-mail/v2"
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)
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//go:embed email-templates
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var emailTemplateFS embed.FS
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func (app *application) SendMail(
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from, to, subject, tmpl string,
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attachments []string,
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data interface{},
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) error {
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templateToRender := fmt.Sprintf("email-templates/%s.html.gohtml", tmpl)
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t, err := template.New("email-html").ParseFS(emailTemplateFS, templateToRender)
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if err != nil {
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app.errorLog.Println(err)
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return err
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}
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var tpl bytes.Buffer
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if err = t.ExecuteTemplate(&tpl, "body", data); err != nil {
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app.errorLog.Println(err)
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return err
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}
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formattedMessage := tpl.String()
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templateToRender = fmt.Sprintf("email-templates/%s.plain.gohtml", tmpl)
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t, err = template.New("email-plain").ParseFS(emailTemplateFS, templateToRender)
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if err != nil {
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app.errorLog.Println(err)
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return err
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}
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if err = t.ExecuteTemplate(&tpl, "body", data); err != nil {
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app.errorLog.Println(err)
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return err
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}
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plainMessage := tpl.String()
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app.infoLog.Println(formattedMessage, plainMessage)
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// send the mail
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server := mail.NewSMTPClient()
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server.Host = app.config.smtp.host
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server.Port = app.config.smtp.port
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// NOTE: not needed for MailHog
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// server.Username = app.config.smtp.username
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// server.Password = app.config.smtp.password
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// server.Encryption = mail.EncryptionTLS
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server.KeepAlive = false
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server.ConnectTimeout = 10 * time.Second
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server.SendTimeout = 10 * time.Second
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smtpClient, err := server.Connect()
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if err != nil {
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return err
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}
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email := mail.NewMSG()
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email.SetFrom(from).AddTo(to).SetSubject(subject)
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email.SetBody(mail.TextHTML, formattedMessage)
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email.AddAlternative(mail.TextPlain, plainMessage)
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if len(attachments) > 0 {
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for _, x := range attachments {
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email.AddAttachment(x)
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}
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}
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err = email.Send(smtpClient)
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if err != nil {
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app.errorLog.Println(err)
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return err
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}
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app.infoLog.Println("send mail")
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return nil
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}
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