package main

import (
	"bytes"
	"fmt"

	configurator "github.com/OpenCHAMI/configurator/internal"
	"github.com/nikolalohinski/gonja/v2"
	"github.com/nikolalohinski/gonja/v2/exec"
)

type Warewulf struct{}

func (g *Warewulf) GetName() string {
	return "warewulf"
}

func (g *Warewulf) GetGroups() []string {
	return []string{"warewulf"}
}

func (g *Warewulf) Generate(config *configurator.Config, template string) ([]byte, error) {
	var (
		path = config.TemplatePaths[template]
	)

	t, err := gonja.FromFile(path)
	if err != nil {
		return nil, fmt.Errorf("failed to read template from file: %v", err)
	}
	output := "# ========== GENERATED BY OCHAMI CONFIGURATOR ==========\n"

	output += "# ======================================================"
	data := exec.NewContext(map[string]any{
		"hosts": output,
	})
	b := bytes.Buffer{}
	if err = t.Execute(&b, data); err != nil {
		return nil, fmt.Errorf("failed to execute: %v", err)
	}
	return nil, nil
}

var Generator Warewulf