package admin

import (
	"bytes"
	"embed"
	"html/template"
	"io"
	"strings"
)

//go:embed templates/*.html
var templateFS embed.FS

var tmpl *template.Template

func init() {
	funcMap := template.FuncMap{
		"lower": strings.ToLower,
	}
	tmpl = template.Must(template.New("").Funcs(funcMap).ParseFS(templateFS, "templates/*.html"))
}

func renderTemplate(w io.Writer, name string, data map[string]any) error {
	return tmpl.ExecuteTemplate(w, name, data)
}

func renderToString(name string, data map[string]any) string {
	var buf bytes.Buffer
	if err := tmpl.ExecuteTemplate(&buf, name, data); err != nil {
		return "<p>Error rendering template</p>"
	}
	return buf.String()
}

func renderLayout(w io.Writer, title string, content template.HTML) error {
	return tmpl.ExecuteTemplate(w, "layout.html", map[string]any{
		"Title":   title,
		"Content": content,
	})
}