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PowerAuth Push Server RESTful Model Classes

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/*
 * Copyright 2019 Lime - Wultra s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.getlime.push.model.validator;

import io.getlime.push.model.request.UpdateAndroidRequest;

/**
 * Validator class for update Android request.
 *
 * @author Roman Strobl, [email protected]
 */
public class UpdateAndroidRequestValidator {

    /**
     * Validate {@link UpdateAndroidRequest} instance.
     *
     * @param request Request to be validated.
     * @return Error message, or null in case of no error.
     */
    public static String validate(UpdateAndroidRequest request) {
        if (request == null) {
            return "Request must not be null.";
        }
        if (request.getAppId() == null) {
            return "App ID must not be null.";
        }
        if (request.getProjectId() == null || request.getProjectId().isEmpty()) {
            return "Project ID must not be empty.";
        }
        if (request.getPrivateKeyBase64() == null || request.getPrivateKeyBase64().isEmpty()) {
            return "Private key must not be empty.";
        }
        return null;
    }

}