package build

import (
	"os"

	"github.com/hpcng/warewulf/internal/pkg/node"
	"github.com/hpcng/warewulf/internal/pkg/overlay"
	"github.com/hpcng/warewulf/internal/pkg/wwlog"
	"github.com/hpcng/warewulf/pkg/hostlist"
	"github.com/spf13/cobra"
)

func CobraRunE(cmd *cobra.Command, args []string) error {

	if BuildHost || (!BuildHost && !BuildNodes) {
		err := overlay.BuildHostOverlay()
		if err != nil {
			wwlog.Printf(wwlog.WARN, "host overlay could not be built: %s\n", err)
		}
	}
	if BuildNodes || (!BuildHost && !BuildNodes) {
		nodeDB, err := node.New()
		if err != nil {
			wwlog.Printf(wwlog.ERROR, "Could not open node configuration: %s\n", err)
			os.Exit(1)
		}

		nodes, err := nodeDB.FindAllNodes()
		if err != nil {
			wwlog.Printf(wwlog.ERROR, "Could not get node list: %s\n", err)
			os.Exit(1)
		}

		if len(args) > 0 {
			args = hostlist.Expand(args)
			err = overlay.BuildAllOverlays(node.FilterByName(nodes, args))
		} else {
			err = overlay.BuildAllOverlays(nodes)
		}

		if err != nil {
			wwlog.Printf(wwlog.WARN, "Some system overlays failed to be generated: %s\n", err)

		}
	}
	return nil
}