package main import ( "bytes" "fmt" "github.com/Masterminds/sprig" "gopkg.in/gomail.v2" "text/template" ) type NotificationMail interface { GetData() interface{} GetTemplate() string GetSubject() string GetHeaders() map[string]string } var notifyMail = make(chan NotificationMail, 1) var quitMailNotifier = make(chan int) func CloseMailNotifier() { quitMailNotifier <- 1 } func MailNotifier() { logger.Println("Launched mail notifier") for { select { case notification := <-notifyMail: mailText, err := buildMail(notification.GetTemplate(), notification.GetData()) if err != nil { logger.Println("ERROR building mail:", err) continue } m := gomail.NewMessage() m.SetHeader("From", config.NoticeSenderAddress) m.SetHeader("To", config.BoardMailAddress) m.SetHeader("Subject", notification.GetSubject()) for header, value := range notification.GetHeaders() { m.SetHeader(header, value) } m.SetBody("text/plain", mailText.String()) d := gomail.NewDialer(config.MailServer.Host, config.MailServer.Port, "", "") if err := d.DialAndSend(m); err != nil { logger.Println("ERROR sending mail:", err) } case <-quitMailNotifier: fmt.Println("Ending mail notifier") return } } } func buildMail(templateName string, context interface{}) (mailText *bytes.Buffer, err error) { t, err := template.New(templateName).Funcs( sprig.GenericFuncMap()).ParseFiles(fmt.Sprintf("templates/%s", templateName)) if err != nil { return } mailText = bytes.NewBufferString("") t.Execute(mailText, context) return } type NotificationClosedDecision struct { decision Decision voteSums VoteSums } func (n *NotificationClosedDecision) GetData() interface{} { return struct { *Decision *VoteSums }{&n.decision, &n.voteSums} } func (n *NotificationClosedDecision) GetTemplate() string { return "closed_motion_mail.txt" } func (n *NotificationClosedDecision) GetSubject() string { return fmt.Sprintf("Re: %s - %s - finalised", n.decision.Tag, n.decision.Title) } func (n *NotificationClosedDecision) GetHeaders() map[string]string { return map[string]string{"References": fmt.Sprintf("<%s>", n.decision.Tag)} } type NotificationCreateMotion struct { decision Decision voter Voter } func (n *NotificationCreateMotion) GetData() interface{} { voteURL := fmt.Sprintf("%s/vote", config.BaseURL) unvotedURL := fmt.Sprintf("%s/motions/?unvoted=1", config.BaseURL) return struct { *Decision Name string VoteURL string UnvotedURL string }{&n.decision, n.voter.Name, voteURL, unvotedURL} } func (n *NotificationCreateMotion) GetTemplate() string { return "create_motion_mail.txt" } func (n *NotificationCreateMotion) GetSubject() string { return fmt.Sprintf("%s - %s", n.decision.Tag, n.decision.Title) } func (n *NotificationCreateMotion) GetHeaders() map[string]string { return map[string]string{"Message-ID": fmt.Sprintf("<%s>", n.decision.Tag)} } type NotificationUpdateMotion struct { decision Decision voter Voter } func (n *NotificationUpdateMotion) GetData() interface{} { voteURL := fmt.Sprintf("%s/vote", config.BaseURL) unvotedURL := fmt.Sprintf("%s/motions/?unvoted=1", config.BaseURL) return struct { *Decision Name string VoteURL string UnvotedURL string }{&n.decision, n.voter.Name, voteURL, unvotedURL} } func (n *NotificationUpdateMotion) GetTemplate() string { return "update_motion_mail.txt" } func (n *NotificationUpdateMotion) GetSubject() string { return fmt.Sprintf("Re: %s - %s", n.decision.Tag, n.decision.Title) } func (n *NotificationUpdateMotion) GetHeaders() map[string]string { return map[string]string{"References": fmt.Sprintf("<%s>", n.decision.Tag)} } type NotificationWithDrawMotion struct { decision Decision voter Voter } func (n *NotificationWithDrawMotion) GetData() interface{} { return struct { *Decision Name string }{&n.decision, n.voter.Name} } func (n *NotificationWithDrawMotion) GetTemplate() string { return "withdraw_motion_mail.txt" } func (n *NotificationWithDrawMotion) GetSubject() string { return fmt.Sprintf("Re: %s - %s - withdrawn", n.decision.Tag, n.decision.Title) } func (n *NotificationWithDrawMotion) GetHeaders() map[string]string { return map[string]string{"References": fmt.Sprintf("<%s>", n.decision.Tag)} }