public List promoteMultipleEntities()

in azure-maven-plugin-lib/src/main/java/com/microsoft/azure/maven/prompt/DefaultPrompter.java [70:113]
42 lines of code
13 McCabe index (conditional complexity)

    public <T> List<T> promoteMultipleEntities(String header, String promotePrefix, String selectNoneMessage, List<T> entities,
            Function<T, String> getNameFunc, boolean allowEmpty, String enterPromote, List<T> defaultValue) throws IOException {
        final boolean hasDefaultValue = defaultValue != null && defaultValue.size() > 0;
        final List<T> res = new ArrayList<>();

        if (!allowEmpty && entities.size() == 1) {
            return entities;
        }
        printOptionList(header, entities, null, getNameFunc);
        final String example = TextUtils.blue("[1-2,4,6]");
        final String hintMessage = String.format("(input numbers separated by comma, eg: %s, %s %s)", example, TextUtils.blue("ENTER"), enterPromote);
        final String promoteMessage = String.format("%s%s: ", promotePrefix, hintMessage);

        for (;;) {
            System.out.print(promoteMessage);
            System.out.flush();
            final String input = reader.readLine();
            if (StringUtils.isBlank(input)) {
                if (hasDefaultValue) {
                    return defaultValue;
                }
                if (allowEmpty) {
                    return res;
                }
                System.out.println(selectNoneMessage);
            }
            if (isValidIntRangeInput(input)) {
                try {
                    for (final int i : parseIntRanges(input, entities.size())) {
                        res.add(entities.get(i - 1));
                    }
                    if (res.size() > 0 || allowEmpty) {
                        return res;
                    }
                    System.out.print(selectNoneMessage);
                } catch (NumberFormatException ex) {
                    System.out.println(TextUtils.yellow(String.format("The input value('%s') is invalid.", input)));
                }
            } else {
                System.out.println(TextUtils.yellow(String.format("The input value('%s') is invalid.", input)));
            }
            System.out.flush();
        }
    }