print.go

// Database Information about RDS instance
type Database struct {
	// Database identifier
	Identifier string
	// Database ARN
	Arn string
	// Database engine (mysql2, postgres, etc.)
	Engine string
	// Database engine version
	EngineVersion string
        // .........
	// .........
	// Database master user name
	MasterUser string
	// Database master user password
	MasterPassword string
	// Database tags
	Tags map[string]string
}

// PrintDatabase outputs full information about database instance to STDOUT as ASCII
// ┌───────────────────────────────────────────────────────┐
// | Parameter               | Value                       |
// | ----------------------------------------------------- |
// | Identifier              | example-stage               |
// | ..................................................... |
// └───────────────────────────────────────────────────────┘
func PrintDatabase(db Database) error {
	tableData := pterm.TableData{
		{"Parameter", "Value"},
	}

	for i := 0; i < reflect.TypeOf(db).NumField(); i++ {
		var key string
		var value string

		key = reflect.TypeOf(db).Field(i).Name // structure key name
		valueType := reflect.TypeOf(db).Field(i).Type.Kind() // structure value type

		switch valueType {
		// All Int and Int64 values
		case reflect.Int, reflect.Int64:
			value = strconv.FormatInt(reflect.ValueOf(db).Field(i).Int(), 10)

		// All map[string]string
		// make "key: value" string by elements and join all "\n"
		case reflect.MapOf(reflect.TypeOf("string"), reflect.TypeOf("string")).Kind():
			var v []string
			for _, k := range reflect.ValueOf(db).Field(i).MapKeys() {
				v = append(v, fmt.Sprintf("%s: %s", k.String(), reflect.ValueOf(db).Field(i).MapIndex(k).String()))
			}
			value = strings.Join(v, "\n")

		// All Bool values
		// true = Enabled (green)
		// false = Disabled (red)
		case reflect.Bool:
			if reflect.ValueOf(db).Field(i).Bool() {
				value = pterm.Green("Enabled")
			} else {
				value = pterm.Red("Disabled")
			}
		default:
			value = reflect.ValueOf(db).Field(i).String()

		}

		// Colorize Database Status
		if key == "Status" {
			value = cases.Title(language.Tag{}).String(value)
			switch value {
			case "Available":
				value = pterm.Green(value)
			case "Stopped":
				value = pterm.Red(value)
			default:
				break
			}
		}

		// If a value is not empty and not equal to "0", then the data is added to the table.
		if value != "" && value != "0" {
			tableData = append(tableData, []string{key, value})
		}
	}

	// add connection string information
	tableData = append(tableData, []string{"Connection", db.ConnectionString()})

	err := pterm.DefaultTable.WithHasHeader().
		WithData(tableData).
		WithBoxed(true).
		WithHeaderRowSeparator("-").
		WithRowSeparator(".").
		Render()
	if err != nil {
		return err
	}

	return nil
}