48 lines
947 B
Go
48 lines
947 B
Go
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package messenger
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import (
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"bytes"
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_ "embed"
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"html/template"
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"github.com/vanng822/go-premailer/premailer"
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"github.com/yuin/goldmark"
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"github.com/yuin/goldmark/extension"
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)
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//go:embed base.gohtml
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var mailTmpl string
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var engine *template.Template
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var app App
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func init() {
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md := goldmark.New(
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goldmark.WithExtensions(extension.GFM),
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)
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engine = template.Must(template.New("email").Funcs(template.FuncMap{
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"ToHTML": func(mdtext string) (string, error) {
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var buf bytes.Buffer
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if err := md.Convert([]byte(mdtext), &buf); err != nil {
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return "", err
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}
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return buf.String(), nil
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},
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}).Parse(mailTmpl))
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}
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func Parse(b *Base) (string, error) {
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b.App = app
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buf := &bytes.Buffer{}
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err := engine.Execute(buf, b)
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if err != nil {
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return "", err
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}
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pre, err := premailer.NewPremailerFromString(buf.String(), premailer.NewOptions())
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if err != nil {
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return "", err
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}
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html, err := pre.Transform()
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return html, err
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}
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