From 44ea514e15fa6208ce28ccc647f40db80a20b0c7 Mon Sep 17 00:00:00 2001
From: Alejandro Mery <amery@jpi.io>
Date: Mon, 21 Aug 2023 17:51:44 +0000
Subject: [PATCH] zones: WIP

Signed-off-by: Alejandro Mery <amery@jpi.io>
---
 pkg/zones/machines.go |  7 +++++++
 pkg/zones/scan.go     | 29 +++++++++++++++++++++++++++++
 pkg/zones/zones.go    | 39 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 75 insertions(+)
 create mode 100644 pkg/zones/machines.go
 create mode 100644 pkg/zones/scan.go
 create mode 100644 pkg/zones/zones.go

diff --git a/pkg/zones/machines.go b/pkg/zones/machines.go
new file mode 100644
index 0000000..ed446e8
--- /dev/null
+++ b/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
+}
diff --git a/pkg/zones/scan.go b/pkg/zones/scan.go
new file mode 100644
index 0000000..37bfbbd
--- /dev/null
+++ b/pkg/zones/scan.go
@@ -0,0 +1,29 @@
+package zones
+
+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
+}
diff --git a/pkg/zones/zones.go b/pkg/zones/zones.go
new file mode 100644
index 0000000..2d2ae3c
--- /dev/null
+++ b/pkg/zones/zones.go
@@ -0,0 +1,39 @@
+package zones
+
+import (
+	"io/fs"
+	"os"
+)
+
+// Zone represents one zone in a cluster
+type Zone struct {
+	zones *Zones
+
+	id   int
+	name string
+}
+
+// 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{
+		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))
+}