add terraform outputter format (with basic device support)

Signed-off-by: Marques Johansson <[email protected]>

internal/cli/root.go

@@ -163,6 +163,7 @@ func (c *Client) Format() outputPkg.Format {
 	case "":
 		break
 	case outputPkg.FormatTable,
+		outputPkg.FormatTerraform,
 		outputPkg.FormatJSON,
 		outputPkg.FormatYAML:
 		format = f

internal/outputs/outputs.go

@@ -7,14 +7,17 @@ import (
 
 	"github.com/olekukonko/tablewriter"
 	"sigs.k8s.io/yaml"
+
+	"github.com/equinix/metal-cli/internal/outputs/terraform"
 )
 
 type Format string
 
 const (
-	FormatTable Format = "table"
-	FormatJSON  Format = "json"
-	FormatYAML  Format = "yaml"
+	FormatTable     Format = "table"
+	FormatJSON      Format = "json"
+	FormatYAML      Format = "yaml"
+	FormatTerraform Format = "tf"
 )
 
 type Outputer interface {
@@ -26,6 +29,15 @@ type Standard struct {
 	Format Format
 }
 
+func outputTerraform(in interface{}) error {
+	output, err := terraform.Marshal(in)
+	if err != nil {
+		return err
+	}
+	fmt.Println(string(output))
+	return nil
+}
+
 func outputJSON(in interface{}) error {
 	output, err := json.MarshalIndent(in, "", "  ")
 	if err != nil {
@@ -49,6 +61,8 @@ func (o *Standard) Output(in interface{}, header []string, data *[][]string) err
 		return outputJSON(in)
 	} else if o.Format == FormatYAML {
 		return outputYAML(in)
+	} else if o.Format == FormatTerraform {
+		return outputTerraform(in)
 	} else {
 		table := tablewriter.NewWriter(os.Stdout)
 		table.SetAutoWrapText(false)

internal/outputs/terraform/format.go

@@ -0,0 +1,45 @@
+package terraform
+
+import (
+	"bytes"
+	"html/template"
+
+	"github.com/packethost/packngo"
+)
+
+const deviceFormat = `
+# terraform import metal_device.{{.Hostname}} {{.ID}}
+resource "metal_device" "{{.Hostname}}" {
+  plan = "{{.Plan.Slug}}"
+  hostname = "{{.Hostname}}"
+  billing_cycle = "{{.BillingCycle}}"
+  metro = "{{.Metro.Code}}"
+  operating_system = "{{.OS.Slug}}"
+  project_id = "{{.Project.ID}}"
+
+  tags = {{.Tags}}
+}
+`
+
+func many(s string) string {
+	return `{{range .}}` + s + `{{end}}`
+}
+func Marshal(i interface{}) ([]byte, error) {
+	var f = ""
+	switch i.(type) {
+	case *packngo.Device:
+		f = deviceFormat
+	case []packngo.Device:
+		f = many(deviceFormat)
+	}
+	tmpl, err := template.New("terraform").Parse(f)
+	if err != nil {
+		return nil, err
+	}
+	buf := new(bytes.Buffer)
+	err = tmpl.Execute(buf, i)
+	if err != nil {
+		return nil, err
+	}
+	return buf.Bytes(), nil
+}