com.zuunr.openapi.OpenApiSchemaConverter Maven / Gradle / Ivy

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/*
 * Copyright 2020 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.openapi;

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

import java.util.Iterator;

/**
 * @author Niklas Eldberger
 */
public class OpenApiSchemaConverter {

    public JsonValue toJsonSchema(JsonObject openApiSchema) {

        JsonObject jsonSchema = openApiSchema;

        JsonObjectBuilder propertiesBuilder = JsonObject.EMPTY.builder();

        JsonObject properties = openApiSchema.get("properties", JsonValue.NULL).getValue(JsonObject.class);

        if (properties != null) {

            Iterator valuesIter = properties.values().iterator();
            for (JsonValue key : properties.keys()) {
                propertiesBuilder.put(key.getString(), toJsonSchema(valuesIter.next().getValue(JsonObject.class)));
            }

            jsonSchema = jsonSchema.put("properties", properties);
        }
        jsonSchema = exclusiveMaximum(openApiSchema, jsonSchema);
        jsonSchema = exclusiveMinimum(openApiSchema, jsonSchema);

        return jsonSchema.jsonValue();


    }

    private JsonObject exclusiveMaximum(JsonObject openApiSchema, JsonObject jsonSchema) {
        JsonValue exclusiveMaximum = openApiSchema.get("exclusiveMaximum");
        if (exclusiveMaximum != null && exclusiveMaximum.is(Boolean.class) && exclusiveMaximum.getValue(Boolean.class)) {
            JsonValue maximum = openApiSchema.get("maximum");
            if (maximum == null) {
                throw new OpenApiConversionException("maximum must not be null");
            }
            jsonSchema = jsonSchema.put("exclusiveMaximum", maximum);
            jsonSchema = jsonSchema.remove("maximum");
        }
        return jsonSchema;
    }

    private JsonObject exclusiveMinimum(JsonObject openApiSchema, JsonObject jsonSchema) {
        JsonValue exclusiveMinimum = openApiSchema.get("exclusiveMinimum");
        if (exclusiveMinimum != null && exclusiveMinimum.is(Boolean.class) && exclusiveMinimum.getValue(Boolean.class)) {
            JsonValue minimum = openApiSchema.get("minimum");
            if (minimum == null) {
                throw new OpenApiConversionException("minimum must not be null");
            }
            jsonSchema = jsonSchema.put("exclusiveMinimum", minimum);
            jsonSchema = jsonSchema.remove("minimum");
        }
        return jsonSchema;
    }
}