76 lines
1.6 KiB
Go
76 lines
1.6 KiB
Go
package renderer
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import (
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"encoding/base64"
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"html/template"
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"io/ioutil"
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"net/http"
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"github.com/Masterminds/sprig"
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)
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func preprocHTMLTemplate(pl *driverPayload) (*template.Template, error) {
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bb, err := ioutil.ReadAll(pl.Template)
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if err != nil {
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return nil, err
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}
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gtpl := template.New("text/html_render").
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Funcs(sprig.FuncMap()).
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Funcs(template.FuncMap{
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// "attachDataURL": func(name string) template.URL {
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// // Find the attachment
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// att, has := pl.Attachments[name]
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// if !has {
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// return template.URL(fmt.Sprintf("error: attachment not found: %s", name))
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// }
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// // Process source
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// bb, err := ioutil.ReadAll(att.Source)
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// if err != nil {
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// return template.URL(fmt.Sprintf("error: %s", err.Error()))
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// }
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// return template.URL("data:" + att.Mime + ";base64," + base64.RawStdEncoding.EncodeToString(bb))
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// },
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"inlineRemote": func(url string) (template.URL, error) {
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rsp, err := http.Get(url)
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if err != nil {
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return "", err
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}
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defer rsp.Body.Close()
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bb, err := ioutil.ReadAll(rsp.Body)
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if err != nil {
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return "", err
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}
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raw := base64.RawStdEncoding.EncodeToString(bb)
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return template.URL("data:" + rsp.Header.Get("Content-Type") + ";base64," + raw), nil
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},
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})
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// Prep the original template
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t, err := gtpl.Parse(string(bb))
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if err != nil {
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return nil, err
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}
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// Prep partials
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for _, p := range pl.Partials {
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bb, err = ioutil.ReadAll(p)
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if err != nil {
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return nil, err
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}
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t, err = gtpl.Parse(string(bb))
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if err != nil {
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return nil, err
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}
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}
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return t, nil
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}
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