Add embedded hourly report template assets

internal/reporttemplate/reporttemplate.go

@@ -0,0 +1,60 @@
+// Package reporttemplate provides embedded Markdown templates and schemas.
+package reporttemplate
+
+import (
+	"bytes"
+	"embed"
+	"fmt"
+	"text/template"
+)
+
+//go:embed templates/*.md.tmpl schemas/*.schema.json
+var assets embed.FS
+
+var templates = map[string]string{
+	"hourly": "templates/hourly.md.tmpl",
+}
+
+var schemas = map[string]string{
+	"hourly": "schemas/hourly.generated_text.schema.json",
+}
+
+func Template(id string) (string, error) {
+	path, ok := templates[id]
+	if !ok {
+		return "", fmt.Errorf("unknown report template %q", id)
+	}
+	data, err := assets.ReadFile(path)
+	if err != nil {
+		return "", fmt.Errorf("read report template %q: %w", id, err)
+	}
+	return string(data), nil
+}
+
+func Schema(id string) ([]byte, error) {
+	path, ok := schemas[id]
+	if !ok {
+		return nil, fmt.Errorf("unknown generated text schema %q", id)
+	}
+	data, err := assets.ReadFile(path)
+	if err != nil {
+		return nil, fmt.Errorf("read generated text schema %q: %w", id, err)
+	}
+	return append([]byte(nil), data...), nil
+}
+
+func Render(id string, data any) ([]byte, error) {
+	source, err := Template(id)
+	if err != nil {
+		return nil, err
+	}
+	tmpl, err := template.New(id).Option("missingkey=error").Parse(source)
+	if err != nil {
+		return nil, fmt.Errorf("parse report template %q: %w", id, err)
+	}
+	var out bytes.Buffer
+	if err := tmpl.Execute(&out, data); err != nil {
+		return nil, fmt.Errorf("render report template %q: %w", id, err)
+	}
+	return out.Bytes(), nil
+}