mirror of
https://github.com/go-vikunja/vikunja.git
synced 2026-08-02 16:12:02 -05:00
kolaenteandGitHub
fb7764d9f1
Email notifications now display user mentions with inline avatar images for improved visual recognition and easier identification. Mentions gracefully fall back to display names if avatars are unavailable.
212 lines
6.1 KiB
Go
212 lines
6.1 KiB
Go
// Vikunja is a to-do list application to facilitate your life.
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// Copyright 2018-present Vikunja and contributors. All rights reserved.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package notifications
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import (
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"bytes"
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"embed"
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templatehtml "html/template"
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templatetext "text/template"
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"code.vikunja.io/api/pkg/config"
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"code.vikunja.io/api/pkg/i18n"
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"code.vikunja.io/api/pkg/mail"
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"code.vikunja.io/api/pkg/utils"
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"github.com/microcosm-cc/bluemonday"
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"github.com/yuin/goldmark"
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)
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const mailTemplatePlain = `
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{{ .Greeting }}
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{{ range $line := .IntroLines}}
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{{ $line.Text }}
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{{ end }}
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{{ if .ActionURL }}{{ .ActionText }}:
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{{ .ActionURL }}{{end}}
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{{ range $line := .OutroLines}}
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{{ $line.Text }}
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{{ end }}
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{{ range $line := .FooterLines}}
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{{ $line.Text }}
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{{ end }}`
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const mailTemplateHTML = `
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<!doctype html>
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<html style="width: 100%; height: 100%; padding: 0; margin: 0;">
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<head>
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<meta name="viewport" content="width: display-width;">
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</head>
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<body style="width: 100%; padding: 0; margin: 0; background: #f3f4f6">
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<div style="width: 100%; font-family: 'Open Sans', sans-serif; Text-rendering: optimizeLegibility">
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<div style="width: 600px; margin: 0 auto; Text-align: justify;">
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<h1 style="font-size: 30px; Text-align: center;">
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<img src="cid:logo.png" style="height: 75px;" alt="Vikunja"/>
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</h1>
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<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;">
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<p>
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{{ .Greeting }}
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</p>
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{{ range $line := .IntroLinesHTML}}
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{{ $line }}
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{{ end }}
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{{ if .ActionURL }}
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<a href="{{ .ActionURL }}" title="{{ .ActionText }}"
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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;">
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{{ .ActionText }}
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</a>
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{{end}}
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{{ range $line := .OutroLinesHTML}}
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{{ $line }}
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{{ end }}
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{{ if .ActionURL }}
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<div style="color: #9CA3AF;font-size:12px;border-top: 1px solid #dbdbdb;margin-top:20px;padding-top:20px;">
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<p>
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{{ .CopyURLText }}<br/>
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{{ .ActionURL }}
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</p>
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{{ range $line := .FooterLinesHTML}}
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{{ $line }}
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{{ end }}
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</div>
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{{ else }}
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{{ if .FooterLinesHTML }}
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<div style="color: #9CA3AF;font-size:12px;border-top: 1px solid #dbdbdb;margin-top:20px;padding-top:20px;">
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{{ range $line := .FooterLinesHTML }}
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{{ $line }}
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{{ end }}
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</div>
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{{ end }}
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{{ end }}
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</div>
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</div>
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</div>
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</body>
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</html>
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`
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//go:embed logo.png
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var logo embed.FS
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func convertLinesToHTML(lines []*mailLine) (linesHTML []templatehtml.HTML, err error) {
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p := bluemonday.UGCPolicy()
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// Allow data URI images for inline avatars in mentions
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p.AllowDataURIImages()
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// Allow style attribute on img elements for avatar styling
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p.AllowAttrs("style").OnElements("img")
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// Allow specific CSS properties for avatar styling
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p.AllowStyles("border-radius", "vertical-align", "margin-right").OnElements("img")
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for _, line := range lines {
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if line.isHTML {
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// #nosec G203 -- the html is sanitized
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linesHTML = append(linesHTML, templatehtml.HTML(p.Sanitize(line.Text)))
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continue
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}
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md := []byte(line.Text)
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var buf bytes.Buffer
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err = goldmark.Convert(md, &buf)
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if err != nil {
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return nil, err
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}
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// #nosec G203 -- the html is sanitized
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linesHTML = append(linesHTML, templatehtml.HTML(p.Sanitize(buf.String())))
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}
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return
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}
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// RenderMail takes a precomposed mail message and renders it into a ready to send mail.Opts object
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func RenderMail(m *Mail, lang string) (mailOpts *mail.Opts, err error) {
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var htmlContent bytes.Buffer
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var plainContent bytes.Buffer
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plain, err := templatetext.New("mail-plain").Parse(mailTemplatePlain)
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if err != nil {
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return nil, err
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}
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html, err := templatehtml.New("mail-plain").Parse(mailTemplateHTML)
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if err != nil {
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return nil, err
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}
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boundaryStr, err := utils.CryptoRandomString(13)
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if err != nil {
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return nil, err
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}
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boundary := "np" + boundaryStr
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data := make(map[string]interface{})
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data["Greeting"] = m.greeting
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data["IntroLines"] = m.introLines
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data["OutroLines"] = m.outroLines
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data["FooterLines"] = m.footerLines
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data["ActionText"] = m.actionText
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data["ActionURL"] = m.actionURL
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data["Boundary"] = boundary
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data["FrontendURL"] = config.ServicePublicURL.GetString()
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data["CopyURLText"] = i18n.T(lang, "notifications.common.copy_url")
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data["IntroLinesHTML"], err = convertLinesToHTML(m.introLines)
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if err != nil {
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return nil, err
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}
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data["OutroLinesHTML"], err = convertLinesToHTML(m.outroLines)
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if err != nil {
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return nil, err
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}
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data["FooterLinesHTML"], err = convertLinesToHTML(m.footerLines)
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if err != nil {
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return nil, err
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}
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err = plain.Execute(&plainContent, data)
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if err != nil {
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return nil, err
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}
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err = html.Execute(&htmlContent, data)
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if err != nil {
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return nil, err
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}
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mailOpts = &mail.Opts{
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From: m.from,
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To: m.to,
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Subject: m.subject,
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ContentType: mail.ContentTypeMultipart,
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Message: plainContent.String(),
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HTMLMessage: htmlContent.String(),
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Boundary: boundary,
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ThreadID: m.threadID,
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EmbedFS: map[string]*embed.FS{
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"logo.png": &logo,
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},
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}
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return mailOpts, nil
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}
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