jpictl: initial env command [WIP]

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

pkg/zones/machines.go

@@ -0,0 +1,7 @@
+package zones
+
+// A Machine is a machine on a Zone
+type Machine struct {
+	zone *Zone
+	name string
+}

pkg/zones/scan.go

@@ -1,5 +1,29 @@
 package zones
 
-func (*Zones) Scan() error {
+import (
+	"io/fs"
+	"log"
+)
+
+func (m *Zones) scan() error {
+	var zones []Zone
+
+	// 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(),
+			}
+
+			log.Print(z)
+			zones = append(zones, z)
+		}
+	}
 	return nil
 }

pkg/zones/zones.go

@@ -1,17 +1,39 @@
 package zones
 
-type Zones struct {
-	basedir string
+import (
+	"io/fs"
+	"os"
+)
+
+// Zone represents one zone in a cluster
+type Zone struct {
+	zones *Zones
+
+	id   int
+	name string
 }
 
-func New(dir string) (*Zones, error) {
+// Zones represents all zones in a cluster
+type Zones struct {
+	dir fs.FS
+
+	zones []Zone
+}
+
+// NewFS builds a [Zones] tree using the given directory
+func NewFS(dir fs.FS) (*Zones, error) {
 	z := &Zones{
-		basedir: dir,
+		dir: dir,
 	}
 
-	if err := z.Scan(); err != nil {
+	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))
+}