package config

import (
	"bytes"
	_ "embed"
	"text/template"

	"github.com/smalex-z/gopher/internal/db"
)

//go:embed templates/Caddyfile.tmpl
var caddyTemplate string

type caddyData struct {
	Domain  string
	Tunnels []db.Tunnel
}

func GenerateCaddyfile(vps db.VPSConfig, tunnels []db.Tunnel) (string, error) {
	tmpl, err := template.New("caddyfile").Parse(caddyTemplate)
	if err != nil {
		return "", err
	}

	data := caddyData{
		Domain:  vps.Domain,
		Tunnels: tunnels,
	}

	var buf bytes.Buffer
	if err := tmpl.Execute(&buf, data); err != nil {
		return "", err
	}
	return buf.String(), nil
}