65 lines
1.7 KiB
Go
65 lines
1.7 KiB
Go
// Package reporttemplate provides embedded Markdown templates and partials.
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package reporttemplate
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import (
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"bytes"
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"embed"
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"fmt"
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"text/template"
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)
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//go:embed templates/*.md.tmpl templates/partials/*.md.tmpl
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var assets embed.FS
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var templates = map[string]string{
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"daily": "templates/daily.md.tmpl",
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"hourly": "templates/hourly.md.tmpl",
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"today": "templates/today.md.tmpl",
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"tomorrow": "templates/tomorrow.md.tmpl",
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}
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var templatePartials = []string{
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"templates/partials/alert_digest.md.tmpl",
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"templates/partials/daypart_forecast.md.tmpl",
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"templates/partials/precipitation_timing.md.tmpl",
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"templates/partials/today_daypart_forecast.md.tmpl",
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}
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func Template(id string) (string, error) {
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path, ok := templates[id]
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if !ok {
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return "", fmt.Errorf("unknown report template %q", id)
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}
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data, err := assets.ReadFile(path)
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if err != nil {
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return "", fmt.Errorf("read report template %q: %w", id, err)
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}
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return string(data), nil
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}
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func Render(id string, data any) ([]byte, error) {
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source, err := Template(id)
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if err != nil {
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return nil, err
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}
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tmpl, err := template.New(id).Funcs(templateFuncs()).Option("missingkey=error").Parse(source)
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if err != nil {
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return nil, fmt.Errorf("parse report template %q: %w", id, err)
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}
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for _, path := range templatePartials {
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partial, err := assets.ReadFile(path)
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if err != nil {
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return nil, fmt.Errorf("read report template partial %q: %w", path, err)
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}
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tmpl, err = tmpl.Parse(string(partial))
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if err != nil {
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return nil, fmt.Errorf("parse report template partial %q: %w", path, err)
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}
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}
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var out bytes.Buffer
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if err := tmpl.Execute(&out, data); err != nil {
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return nil, fmt.Errorf("render report template %q: %w", id, err)
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}
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return out.Bytes(), nil
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}
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