93 lines
2.0 KiB
Go
93 lines
2.0 KiB
Go
package mailer
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import (
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domain "RenewCMS/internal/domain/mail"
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"RenewCMS/internal/infrastructure/config"
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"bytes"
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"embed"
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"html/template"
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"log"
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"gopkg.in/gomail.v2"
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)
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type MailRepository struct {
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smtp config.SmtpSettings
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}
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//go:embed templates/*
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var mailTemplateFiles embed.FS
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func NewMailRepository(smtp config.SmtpSettings) *MailRepository {
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return &MailRepository{smtp: smtp}
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}
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const defaultSubject = "RenewCMS | Action required"
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type subjectProvider interface {
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Subject() string
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}
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func subjectFor(templateName string, data any) string {
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if provider, ok := data.(subjectProvider); ok {
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return provider.Subject()
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}
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switch templateName {
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case "verification":
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return "Verify your RenewCMS account"
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case "password-reset":
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return "Reset your RenewCMS password"
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}
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return defaultSubject
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}
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func (m MailRepository) Render(templateName string, data any) (string, string, error) {
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subject := subjectFor(templateName, data)
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tmpl, err := template.ParseFS(mailTemplateFiles, "templates/"+templateName+".html")
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if err != nil {
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log.Println("error when template.ParseFS:", err)
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return subject, "", err
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}
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var body bytes.Buffer
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if err := tmpl.Execute(&body, data); err != nil {
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log.Println("error when tmpl.Execute:", err)
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return subject, "", err
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}
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return subject, body.String(), nil
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}
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func (m MailRepository) Send(receiverAddress string, templateName string, data any) error {
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login := m.smtp.Login
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sender := m.smtp.Sender
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password := m.smtp.Password
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smtpHost := m.smtp.Host
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smtpPort := m.smtp.Port
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d := gomail.NewDialer(smtpHost, smtpPort, login, password)
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subject, body, err := m.Render(templateName, data)
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if err != nil {
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return err
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}
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msg := gomail.NewMessage()
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msg.SetHeaders(map[string][]string{
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"From": {"RenewCMS <" + sender + ">"},
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"To": {receiverAddress},
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"Subject": {subject},
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})
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msg.SetBody("text/html", body)
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if err := d.DialAndSend(msg); err != nil {
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log.Println("error when sending email:", err)
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return err
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}
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return nil
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}
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var _ domain.Repository = &MailRepository{}
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