feat/version (#2)

Reviewed-on: #2

main.go

@@ -25,6 +25,8 @@ const (
 	appName            = "node-lookup"
 )
 
+var version = "dev"
+
 // config holds all configurable values. Fields map 1:1 to config file keys,
 // env vars (NODE_LOOKUP_*), and (where applicable) CLI flags.
 type config struct {
@@ -148,7 +150,7 @@ func queryPuppetDB(puppetDBURL, query string) ([]fact, error) {
 	if err != nil {
 		return nil, fmt.Errorf("request failed: %w", err)
 	}
-	defer resp.Body.Close()
+	defer func() { _ = resp.Body.Close() }()
 
 	if resp.StatusCode != http.StatusOK {
 		body, _ := io.ReadAll(resp.Body)
@@ -174,7 +176,7 @@ func valueString(raw json.RawMessage) string {
 
 func valueAny(raw json.RawMessage) interface{} {
 	var v interface{}
-	json.Unmarshal(raw, &v)
+	_ = json.Unmarshal(raw, &v)
 	return v
 }
 
@@ -298,7 +300,7 @@ func run(cfg config, nodeName, factName, match, partialMatch string, showRole, n
 		enc := json.NewEncoder(os.Stdout)
 		enc.SetIndent("", "  ")
 		enc.SetEscapeHTML(false)
-		enc.Encode(hostFactMap)
+		_ = enc.Encode(hostFactMap)
 
 	case count:
 		values := stdinLines
@@ -317,7 +319,7 @@ func run(cfg config, nodeName, factName, match, partialMatch string, showRole, n
 			"all": map[string]interface{}{"hosts": hosts},
 		}
 		b, _ := yaml.Marshal(inventory)
-		os.Stdout.Write(b)
+		_, _ = os.Stdout.Write(b)
 
 	case nodeOnly:
 		for _, line := range returnData {
@@ -419,6 +421,14 @@ func main() {
 	configCmd.AddCommand(configInitCmd, configShowCmd)
 	rootCmd.AddCommand(configCmd)
 
+	versionCmd := &cobra.Command{
+		Use:          "version",
+		Short:        "Print the version",
+		Run:          func(cmd *cobra.Command, args []string) { fmt.Println(version) },
+		SilenceUsage: true,
+	}
+	rootCmd.AddCommand(versionCmd)
+
 	if err := rootCmd.Execute(); err != nil {
 		os.Exit(1)
 	}