package zones

import (
	"io/fs"
)

func (m *Zones) scan() error {
	// each directory is a zone
	entries, err := fs.ReadDir(m.dir, ".")
	if err != nil {
		return err
	}

	for _, e := range entries {
		if e.IsDir() {
			z := &Zone{
				zones: m,
				Name:  e.Name(),
			}

			if err := z.scan(); err != nil {
				return err
			}

			m.Zones = append(m.Zones, z)
		}
	}

	return m.scanMachines()
}

func (m *Zones) scanMachines() error {
	var err error
	m.ForEachMachine(func(p *Machine) {
		if err == nil {
			err = p.scan()
		}
	})
	return err
}

func (z *Zone) scan() error {
	// each directory is a machine
	entries, err := fs.ReadDir(z.zones.dir, z.Name)
	if err != nil {
		return err
	}

	for _, e := range entries {
		if e.IsDir() {
			m := &Machine{
				zone: z,
				Name: e.Name(),
			}

			z.Machines = append(z.Machines, m)
		}
	}

	return nil
}