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Library for working with Yandex Maps Static API 1.x

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/*
 * Created with IntelliJ IDEA.
 * User: michaelpotter
 * Date: 05/02/14
 * Time: 22:14
 */
package io.github.mvpotter.urlbuilder;

import io.github.mvpotter.model.YandexMap;

/**
 * Generates URL argument that contains information about map scale.
 */
public class MapScaleUrlArgumentBuilder extends AbstractUrlArgumentBuilder {

    public static final int MIN_SCALE = 0;
    public static final int MAX_SCALE = 17;
    private static final String SCALE_KEY = "z";

    @Override
    protected String buildUrlArgument(final YandexMap yandexMap) {
        int scale = yandexMap.getScale();
        if (scale != YandexMap.DEFAULT_SCALE) {
            if (scale < MIN_SCALE) {
                scale = MIN_SCALE;
            } else if (scale > MAX_SCALE) {
                scale = MAX_SCALE;
            }
            return SCALE_KEY + EQUALS + scale;
        }

        return null;
    }

}