com.predic8.membrane.core.openapi.validators.ArrayValidator Maven / Gradle / Ivy

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/*
 *  Copyright 2022 predic8 GmbH, www.predic8.com
 *
 *    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.predic8.membrane.core.openapi.validators;

import com.fasterxml.jackson.databind.*;
import com.predic8.membrane.core.openapi.util.*;
import io.swagger.v3.oas.models.*;
import io.swagger.v3.oas.models.media.*;

import java.util.*;

import static java.lang.String.*;


@SuppressWarnings("rawtypes")
public class ArrayValidator implements IJSONSchemaValidator {

    private final Schema schema;
    private final OpenAPI api;

    public ArrayValidator(OpenAPI api, Schema schema) {
        this.api = api;
        this.schema = schema;
    }

    @Override
    public ValidationErrors validate(ValidationContext ctx, Object value) {
        ctx.schemaType("array");

        ValidationErrors errors = new ValidationErrors();
        Schema itemsSchema = schema.getItems();

        JsonNode node = (JsonNode) value;

        if (itemsSchema != null) {
            for (int i = 0; i < node.size(); i++) {
                errors.add(new SchemaValidator(api, itemsSchema).validate(ctx.addJSONpointerSegment(Integer.toString(i)), node.get(i)));
            }
        }

        // @TODO Implement
        // As of 2022-11-20 parser does not support OpenAPI 3.1.0
        if (schema.getPrefixItems() != null) {
            //noinspection unchecked
            schema.getPrefixItems().forEach(o -> System.out.println("o = " + o));
        }

        if (schema.getMinItems() != null && node.size() < schema.getMinItems()) {
            errors.add(ctx, format("Array has %d items. This is less then minItems of %d.", node.size(), schema.getMinItems()));
        }

        if (schema.getMaxItems() != null && node.size() > schema.getMaxItems()) {
            errors.add(ctx, format("Array has %d items. This is more then maxItems of %d.", node.size(), schema.getMaxItems()));
        }

        errors.add(validateUniqueItems(ctx, node));

        return errors;
    }

    private ValidationErrors validateUniqueItems(ValidationContext ctx, JsonNode node) {
        if (schema.getUniqueItems() == null || !schema.getUniqueItems())
            return null;

        Set itemValues = new HashSet<>();
        List moreThanOnce = new ArrayList<>();
        for (int i = 0; i < node.size(); i++) {
            if (itemValues.contains(node.get(i))) {
                moreThanOnce.add(node.get(i).toString());
            }
            itemValues.add(node.get(i));
        }
        if (moreThanOnce.size() > 0) {
            return ValidationErrors.create(ctx, format("Array with restriction uniqueItems has the not unique values %s.", Utils.joinByComma(moreThanOnce)));
        }

        return null;
    }
}