zones: add initial m/ scanner

Signed-off-by: Alejandro Mery <amery@jpi.io>

pkg/zones/zones.go

@@ -0,0 +1,46 @@
+// Package zones contains information about the cluster
+package zones
+
+import (
+	"io/fs"
+	"os"
+)
+
+// Zone represents one zone in a cluster
+type Zone struct {
+	zones *Zones
+
+	ID   int
+	Name string
+
+	Machines []*Machine `toml:"machines"`
+}
+
+func (z *Zone) String() string {
+	return z.Name
+}
+
+// Zones represents all zones in a cluster
+type Zones struct {
+	dir fs.FS
+
+	Zones []*Zone `toml:"zones"`
+}
+
+// NewFS builds a [Zones] tree using the given directory
+func NewFS(dir fs.FS) (*Zones, error) {
+	z := &Zones{
+		dir: dir,
+	}
+
+	if err := z.scan(); err != nil {
+		return nil, err
+	}
+
+	return z, nil
+}
+
+// New builds a [Zones] tree using the given directory
+func New(dir string) (*Zones, error) {
+	return NewFS(os.DirFS(dir))
+}