parent
ceb42aa4d0
commit
87fbdea68b
4 changed files with 261 additions and 2 deletions
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package mail |
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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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"net/mail" |
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"net/url" |
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"strings" |
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"git.kirsle.net/apps/gophertype/pkg/console" |
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"git.kirsle.net/apps/gophertype/pkg/markdown" |
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"git.kirsle.net/apps/gophertype/pkg/models" |
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"git.kirsle.net/apps/gophertype/pkg/responses" |
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"git.kirsle.net/apps/gophertype/pkg/settings" |
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"github.com/microcosm-cc/bluemonday" |
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gomail "gopkg.in/gomail.v2" |
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) |
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// Email configuration.
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type Email struct { |
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To string |
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ReplyTo string |
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Admin bool /* admin view of the email */ |
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Subject string |
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UnsubscribeURL string |
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Data map[string]interface{} |
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Template string |
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} |
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// SendEmail sends an email.
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func SendEmail(email Email) { |
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s := settings.Current |
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// Suppress sending any mail when no mail settings are configured, but go
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// through the motions -- great for local dev.
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var doNotMail bool |
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if !s.MailEnabled || s.MailHost == "" || s.MailPort == 0 || s.MailSender == "" { |
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console.Info("Suppressing email: not completely configured") |
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doNotMail = true |
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} |
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// Resolve the template.
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tmpl, err := responses.GetFile(email.Template) |
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if err != nil { |
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console.Error("SendEmail: %s", err.Error()) |
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return |
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} |
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// Render the template to HTML.
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var html bytes.Buffer |
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t := template.New(email.Template) |
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t, err = t.Parse(string(tmpl)) |
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if err != nil { |
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console.Error("SendEmail: template parsing error: %s", err.Error()) |
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} |
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// Execute the template.
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err = t.ExecuteTemplate(&html, email.Template, email) |
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if err != nil { |
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console.Error("SendEmail: template execution error: %s", err.Error()) |
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} |
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// Condense the body down to plain text, lazily. Who even has a plain text
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// email client anymore?
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rawLines := strings.Split( |
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bluemonday.StrictPolicy().Sanitize(html.String()), |
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"\n", |
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) |
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var lines []string |
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for _, line := range rawLines { |
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line = strings.TrimSpace(line) |
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if len(line) == 0 { |
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continue |
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} |
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lines = append(lines, line) |
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} |
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plaintext := strings.Join(lines, "\n\n") |
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// If we're not actually going to send the mail, this is a good place to stop.
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if doNotMail { |
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console.Info("Not going to send an email.") |
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console.Debug("The message was going to be:\n%s", plaintext) |
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return |
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} |
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m := gomail.NewMessage() |
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m.SetHeader("From", fmt.Sprintf("%s <%s>", s.Title, s.MailSender)) |
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m.SetHeader("To", email.To) |
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if email.ReplyTo != "" { |
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m.SetHeader("Reply-To", email.ReplyTo) |
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} |
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m.SetHeader("Subject", email.Subject) |
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m.SetBody("text/plain", plaintext) |
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m.AddAlternative("text/html", html.String()) |
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d := gomail.NewDialer(s.MailHost, s.MailPort, s.MailUsername, s.MailPassword) |
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console.Info("SendEmail: %s (%s) to %s", email.Subject, email.Template, email.To) |
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if err := d.DialAndSend(m); err != nil { |
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console.Error("SendEmail: %s", err.Error()) |
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} |
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} |
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// NotifyComment sends notification emails about comments.
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func NotifyComment(subject string, originURL string, c models.Comment) { |
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s := settings.Current |
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if s.BaseURL == "" { |
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console.Error("Can't send comment notification because the site URL is not configured") |
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return |
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} |
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// Prepare the email payload.
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email := Email{ |
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Template: "_builtin/email/comment.gohtml", |
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Subject: "Comment Added: " + subject, |
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Data: map[string]interface{}{ |
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"Name": c.Name, |
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"Subject": subject, |
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"Body": template.HTML(markdown.RenderMarkdown(c.Body)), |
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"URL": strings.Trim(s.BaseURL, "/") + originURL, |
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"QuickDelete": fmt.Sprintf("%s/comments/quick-delete?d=%s&next=%s", |
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strings.Trim(s.BaseURL, "/"), |
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url.QueryEscape(c.DeleteToken), |
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url.QueryEscape(strings.Trim(s.BaseURL, "/")+originURL), |
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), |
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}, |
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} |
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// Email the site admins.
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if adminEmails, err := models.ListAdminEmails(); err == nil { |
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email.To = strings.Join(adminEmails, ", ") |
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email.Admin = true |
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console.Info("Mail site admin '%s' about comment notification on '%s'", email.To, c.Thread) |
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SendEmail(email) |
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} |
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// // Email the subscribers.
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// email.Admin = false
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// m := comments.LoadMailingList()
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// for _, to := range m.List(c.ThreadID) {
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// if to == c.Email {
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// continue // don't email yourself
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// }
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// email.To = to
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// email.UnsubscribeURL = fmt.Sprintf("%s/comments/subscription?t=%s&e=%s",
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// strings.Trim(s.Site.URL, "/"),
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// url.QueryEscape(c.ThreadID),
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// url.QueryEscape(to),
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// )
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// console.Info("Mail subscriber '%s' about comment notification on '%s'", email.To, c.ThreadID)
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// SendEmail(email)
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// }
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} |
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// ParseAddress parses an email address.
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func ParseAddress(addr string) (*mail.Address, error) { |
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return mail.ParseAddress(addr) |
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} |
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@ -0,0 +1,61 @@ |
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<!DOCTYPE html> |
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<html> |
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<head> |
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<meta charset="utf-8"> |
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<meta name="viewport" content="width=device-width"> |
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<meta http-equiv="X-UA-Compatible" content="IE=edge"> |
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<meta name="x-apple-disable-message-reformatting"><!-- Disable auto-scale in iOS 10 Mail --> |
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<title>{{ .Subject }}</title> |
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</head> |
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<body width="100%" bgcolor="#FFFFFF" color="#000000" style="margin: 0; mso-line-height-rule: exactly;"> |
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<center> |
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<table width="90%" cellspacing="0" cellpadding="8" style="border: 1px solid #000000"> |
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<tr> |
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<td align="left" valign="top" bgcolor="#C0C0C0"> |
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<font face="Helvetica,Arial,Verdana-sans-serif" size="6" color="#000000"> |
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<b>{{ .Subject }}</b> |
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</font> |
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</td> |
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</tr> |
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<tr> |
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<td align="left" valign="top" bgcolor="#FEFEFE"> |
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<font face="Helvetica,Arial,Verdana-sans-serif" size="3" color="#000000"> |
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{{ if not .Admin }} |
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Hello,<br><br> |
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{{ end }} |
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{{ or .Data.Name "Anonymous" }} has left a comment on: {{ .Data.Subject }} |
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<br><br> |
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{{ .Data.Body }} |
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<br><br> |
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<hr> |
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To view this comment, please go to <a href="{{ .Data.URL }}" target="_blank">{{ .Data.URL }}</a>. |
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{{ if .Admin }} |
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<br><br> |
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Was this comment spam? <a href="{{ .Data.QuickDelete }}" target="_blank">Delete it</a>. |
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{{ end }} |
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{{ if .UnsubscribeURL }} |
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<br><br> |
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To unsubscribe from this comment thread, visit <a href="{{ .UnsubscribeURL }}" target="_blank">{{ .UnsubscribeURL }}</a> |
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{{ end }} |
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</font> |
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</td> |
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</tr> |
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<tr> |
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<td align="left" valign="top" bgcolor="#C0C0C0"> |
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<font face="Helvetica,Arial,Verdana-sans-serif" size="3" color="#000000"> |
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This e-mail was automatically generated; do not reply to it. |
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</font> |
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</td> |
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</tr> |
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</table> |
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</center> |
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</body> |
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</html> |
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