vikunja-api/pkg/notifications/mail_render.go

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// Vikunja is a to-do list application to facilitate your life.
// Copyright 2018-2021 Vikunja and contributors. All rights reserved.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public Licensee as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public Licensee for more details.
//
// You should have received a copy of the GNU Affero General Public Licensee
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package notifications
import (
"bytes"
templatehtml "html/template"
templatetext "text/template"
"code.vikunja.io/api/pkg/config"
"code.vikunja.io/api/pkg/mail"
"code.vikunja.io/api/pkg/utils"
)
const mailTemplatePlain = `
{{ .Greeting }}
{{ range $line := .IntroLines}}
{{ $line }}
{{ end }}
{{ if .ActionURL }}{{ .ActionText }}:
{{ .ActionURL }}{{end}}
{{ range $line := .OutroLines}}
{{ $line }}
{{ end }}`
const mailTemplateHTML = `
<!doctype html>
<html style="width: 100%; height: 100%; padding: 0; margin: 0;">
<head>
<meta name="viewport" content="width: display-width;">
</head>
<body style="width: 100%; padding: 0; margin: 0; background: #f3f4f6">
<div style="width: 100%; font-family: 'Open Sans', sans-serif; text-rendering: optimizeLegibility">
<div style="width: 600px; margin: 0 auto; text-align: justify;">
<h1 style="font-size: 30px; text-align: center;">
<img src="{{.FrontendURL}}images/logo-full.svg" style="height: 75px;" alt="Vikunja"/>
</h1>
<div style="border: 1px solid #dbdbdb; -webkit-box-shadow: 0.3em 0.3em 0.8em #e6e6e6; box-shadow: 0.3em 0.3em 0.8em #e6e6e6; color: #4a4a4a; padding: 5px 25px; border-radius: 3px; background: #fff;">
<p>
{{ .Greeting }}
</p>
{{ range $line := .IntroLines}}
<p>
{{ $line }}
</p>
{{ end }}
{{ if .ActionURL }}
<a href="{{ .ActionURL }}" title="{{ .ActionText }}"
style="position: relative;text-decoration:none;display: block;border-radius: 4px;cursor: pointer;padding-bottom: 8px;padding-left: 14px;padding-right: 14px;padding-top: 8px;width:280px;margin:10px auto;text-align: center;white-space: nowrap;border: 0;text-transform: uppercase;font-size: 14px;font-weight: 700;-webkit-box-shadow: 0 3px 6px rgba(107,114,128,.12),0 2px 4px rgba(107,114,128,.1);box-shadow: 0 3px 6px rgba(107,114,128,.12),0 2px 4px rgba(107,114,128,.1);background-color: #1973ff;border-color: transparent;color: #fff;">
{{ .ActionText }}
</a>
{{end}}
{{ range $line := .OutroLines}}
<p>
{{ $line }}
</p>
{{ end }}
{{ if .ActionURL }}
<p style="color: #9CA3AF;font-size:12px;border-top: 1px solid #dbdbdb;margin-top:20px;padding-top:20px;">
If the button above doesn't work, copy the url below and paste it in your browsers address bar:<br/>
{{ .ActionURL }}
</p>
{{ end }}
</div>
</div>
</div>
</body>
</html>
`
// RenderMail takes a precomposed mail message and renders it into a ready to send mail.Opts object
func RenderMail(m *Mail) (mailOpts *mail.Opts, err error) {
var htmlContent bytes.Buffer
var plainContent bytes.Buffer
plain, err := templatetext.New("mail-plain").Parse(mailTemplatePlain)
if err != nil {
return nil, err
}
html, err := templatehtml.New("mail-plain").Parse(mailTemplateHTML)
if err != nil {
return nil, err
}
boundary := "np" + utils.MakeRandomString(13)
data := make(map[string]interface{})
data["Greeting"] = m.greeting
data["IntroLines"] = m.introLines
data["OutroLines"] = m.outroLines
data["ActionText"] = m.actionText
data["ActionURL"] = m.actionURL
data["Boundary"] = boundary
data["FrontendURL"] = config.ServiceFrontendurl.GetString()
err = plain.Execute(&plainContent, data)
if err != nil {
return nil, err
}
err = html.Execute(&htmlContent, data)
if err != nil {
return nil, err
}
mailOpts = &mail.Opts{
From: m.from,
To: m.to,
Subject: m.subject,
ContentType: mail.ContentTypeMultipart,
Message: plainContent.String(),
HTMLMessage: htmlContent.String(),
Boundary: boundary,
}
return mailOpts, nil
}