com.zuunr.forms.generation.MaximumMerger Maven / Gradle / Ivy

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/*
 * Copyright 2018 Zuunr AB
 *
 * 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 com.zuunr.forms.generation;

import com.zuunr.json.JsonObject;
import com.zuunr.json.JsonValue;

/**
 * @author Niklas Eldberger
 */
public class MaximumMerger {
    public JsonObject mergeMaximum(String maximumName, JsonObject formField1, JsonObject formField2, JsonObject result, MergeStrategy mergeStrategy) {
        Boolean formField1mustBeNull = formField1.get("mustBeNull", JsonValue.FALSE).getValue(Boolean.class);
        Boolean formField2mustBeNull = formField2.get("mustBeNull", JsonValue.FALSE).getValue(Boolean.class);

        boolean restrictionApplicable = !(formField1mustBeNull && formField2mustBeNull);

        if (restrictionApplicable) {
            // max
            Integer formField1max = formField1.get(maximumName, JsonValue.NULL).asInteger();
            Integer formField2max = formField2.get(maximumName, JsonValue.NULL).asInteger();


            if (formField1max == null && !formField1mustBeNull || formField2max == null && !formField2mustBeNull) {
                result = result.remove(maximumName);
            } else {
                if (formField1max == null) {
                    result = result.put(maximumName, formField2max);
                } else if (formField2max == null) {
                    result = result.put(maximumName, formField1max);
                } else if (formField1max > formField2max) {
                    result = result.put(maximumName, formField1max);
                } else {
                    result = result.put(maximumName, formField2max);
                }
            }
        }
        return result;
    }
}