94 lines
1.9 KiB
Go
94 lines
1.9 KiB
Go
package clients
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import (
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"bytes"
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"fmt"
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"gitea.pena/PenaSide/notifier/internal/initialize"
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"github.com/gofiber/fiber/v2"
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"go.uber.org/zap"
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"html/template"
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"mime/multipart"
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)
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type MailClient struct {
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smtpApiUrl string
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smtpSender string
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apiKey string
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fiberClient *fiber.Client
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logger *zap.Logger
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}
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func NewMailClient(deps initialize.MailClientCfg) *MailClient {
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if deps.FiberClient == nil {
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deps.FiberClient = fiber.AcquireClient()
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}
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return &MailClient{
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smtpApiUrl: deps.ApiURL,
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smtpSender: deps.Sender,
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apiKey: deps.ApiKey,
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fiberClient: deps.FiberClient,
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logger: deps.Logger,
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}
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}
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type SenderDeps struct {
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Subject string
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Email string
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Tmpl string
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}
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func (m *MailClient) MailSender(data SenderDeps) error {
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tmpl, err := template.New("email").Parse(data.Tmpl)
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if err != nil {
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m.logger.Error("Error parsing HTML template:", zap.Error(err))
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return err
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}
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var buf bytes.Buffer
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if err = tmpl.Execute(&buf, nil); err != nil {
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m.logger.Error("Error executing template:", zap.Error(err))
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return err
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}
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htmlBody := buf.String()
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form := new(bytes.Buffer)
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writer := multipart.NewWriter(form)
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fields := map[string]string{
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"from": m.smtpSender,
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"to": data.Email,
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"subject": data.Subject,
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"html": htmlBody,
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}
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for key, value := range fields {
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if err = writer.WriteField(key, value); err != nil {
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return err
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}
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}
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if err = writer.Close(); err != nil {
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return err
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}
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req := m.fiberClient.Post(m.smtpApiUrl).Body(form.Bytes()).ContentType(writer.FormDataContentType())
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if m.apiKey != "" {
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req.Set("Authorization", m.apiKey)
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}
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statusCode, body, errs := req.Bytes()
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if errs != nil {
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m.logger.Error("Error sending request:", zap.Error(errs[0]))
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return errs[0]
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}
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if statusCode != fiber.StatusOK {
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err = fmt.Errorf("the SMTP service returned an error: %s Response body: %s", statusCode, body)
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m.logger.Error("Error sending email:", zap.Error(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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