/*
 * Copyright 2020-2030 码匠君<herodotus@aliyun.com>
 *
 * Dante Engine 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.
 *
 * Dante Engine 是 Dante Cloud 系统核心组件库，采用 APACHE LICENSE 2.0 开源协议，您在使用过程中，需要注意以下几点：
 *
 * 1. 请不要删除和修改根目录下的LICENSE文件。
 * 2. 请不要删除和修改 Dante Engine 源码头部的版权声明。
 * 3. 请保留源码和相关描述文件的项目出处，作者声明等。
 * 4. 分发源码时候，请注明软件出处 <https://gitee.com/dromara/dante-cloud>
 * 5. 在修改包名，模块名称，项目代码等时，请注明软件出处 <https://gitee.com/dromara/dante-cloud>
 * 6. 若您的项目无法满足以上几点，可申请商业授权
 */

package org.dromara.dante.spring.jackson;

import org.apache.commons.lang3.Strings;
import org.dromara.dante.core.constant.SymbolConstants;
import org.springframework.util.StringUtils;
import tools.jackson.core.JacksonException;
import tools.jackson.core.JsonGenerator;
import tools.jackson.databind.SerializationContext;
import tools.jackson.databind.ser.std.StdSerializer;

import java.util.HashSet;
import java.util.Set;

/**
 * <p>Description: 逗号分隔字符串序列化为集合 </p>
 *
 * @author : gengwei.zheng
 * @date : 2023/5/22 14:37
 */
public class CommaDelimitedStringToSetSerializer extends StdSerializer<String> {
    public CommaDelimitedStringToSetSerializer() {
        super(String.class);
    }

    @Override
    public void serialize(String value, JsonGenerator generator, SerializationContext context) throws JacksonException {
        Set<String> collection = new HashSet<>();
        if (StringUtils.hasText(value)) {
            if (Strings.CS.contains(value, SymbolConstants.COMMA)) {
                collection = StringUtils.commaDelimitedListToSet(value);
            } else {
                collection.add(value);
            }
        }

        int len = collection.size();

        generator.writeStartArray(collection, len);
        serializeContents(collection, generator, context);
        generator.writeEndArray();
    }

    private void serializeContents(Set<String> value, JsonGenerator generator, SerializationContext context) throws JacksonException {
        int i = 0;

        try {
            for (String str : value) {
                if (str == null) {
                    context.defaultSerializeNullValue(generator);
                } else {
                    generator.writeString(str);
                }
                ++i;
            }
        } catch (Exception e) {
            wrapAndThrow(context, e, value, i);
        }
    }
}
