/*
 * Copyright (c) 2016 Network New Technologies Inc.
 *
 * 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.networknt.schema;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.JsonNodeType;

/**
 * Type factory.
 */
public class TypeFactory {
    /**
     * Gets the {@link JsonType} indicated by the schema node.
     * 
     * @param node the schema node
     * @return the json type
     */
    public static JsonType getSchemaNodeType(JsonNode node) {
        //Single Type Definition
        if (node.isTextual()) {
            String type = node.textValue();
            if ("object".equals(type)) {
                return JsonType.OBJECT;
            }
            if ("array".equals(type)) {
                return JsonType.ARRAY;
            }
            if ("string".equals(type)) {
                return JsonType.STRING;
            }
            if ("number".equals(type)) {
                return JsonType.NUMBER;
            }
            if ("integer".equals(type)) {
                return JsonType.INTEGER;
            }
            if ("boolean".equals(type)) {
                return JsonType.BOOLEAN;
            }
            if ("any".equals(type)) {
                return JsonType.ANY;
            }
            if ("null".equals(type)) {
                return JsonType.NULL;
            }
        }

        //Union Type Definition
        if (node.isArray()) {
            return JsonType.UNION;
        }

        return JsonType.UNKNOWN;
    }

    /**
     * Gets the {@link JsonType} of the value node.
     *
     * @param node the value node
     * @param config the config
     * @return the json type
     */
    public static JsonType getValueNodeType(JsonNode node, SchemaValidatorsConfig config) {
        JsonNodeType type = node.getNodeType();
        switch (type) {
        case OBJECT:
            return JsonType.OBJECT;
        case ARRAY:
            return JsonType.ARRAY;
        case STRING:
        case BINARY:
            return JsonType.STRING;
        case NUMBER:
            if (node.isIntegralNumber()) {
                return JsonType.INTEGER;
            } else if (config != null && (config.isJavaSemantics() || config.isLosslessNarrowing())
                    && node.canConvertToExactIntegral()) {
                return JsonType.INTEGER;
            } else {
                return JsonType.NUMBER;
            }
        case BOOLEAN:
            return JsonType.BOOLEAN;
        case NULL:
            return JsonType.NULL;
        default:
            return JsonType.UNKNOWN;
        }
    }
}
