implement ocdev application list

cmd/app.go

@@ -60,9 +60,24 @@ var getCmd = &cobra.Command{
 	},
 }
 
+var listCmd = &cobra.Command{
+	Use:   "list",
+	Short: "lists all the applications",
+	Args:  cobra.ExactArgs(0),
+	Run: func(cmd *cobra.Command, args []string) {
+		app, err := application.List()
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(-1)
+		}
+		fmt.Print(app)
+	},
+}
+
 func init() {
 	getCmd.Flags().BoolVarP(&isQuiet, "short", "q", false, "If true, display only the application name")
 
+	applicationCmd.AddCommand(listCmd)
 	applicationCmd.AddCommand(getCmd)
 	applicationCmd.AddCommand(createCmd)
 	rootCmd.AddCommand(applicationCmd)

pkg/application/application.go

@@ -28,6 +28,14 @@ func Create(name string) error {
 	return nil
 }
 
+func List() (string, error) {
+	project, err := occlient.GetProjects()
+	if err != nil {
+		return "", errors.Wrap(err, "unable to list applications")
+	}
+	return project, nil
+}
+
 func GetCurrent() (string, error) {
 	app, err := occlient.GetCurrentProjectName()
 	if err != nil {

pkg/occlient/occlient.go

@@ -147,6 +147,17 @@ func GetCurrentProjectName() (string, error) {
 	return strings.TrimSpace(string(output)), nil
 }
 
+func GetProjects() (string, error) {
+	output, err := runOcComamnd(&OcCommand{
+		args:   []string{"get", "project"},
+		format: "custom-columns=NAME:.metadata.name",
+	})
+	if err != nil {
+		return "", errors.Wrap(err, "unable to get projects")
+	}
+	return string(output), nil
+}
+
 func CreateNewProject(name string) error {
 	_, err := runOcComamnd(&OcCommand{
 		args: []string{"new-project", name},