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/*
 * Copyright ©2015-2023 Jaemon. All Rights Reserved.
 *
 * 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.github.jaemon.dinger.core;

import com.github.jaemon.dinger.core.annatations.*;
import com.github.jaemon.dinger.core.entity.DingerRequest;
import com.github.jaemon.dinger.core.entity.MsgType;
import com.github.jaemon.dinger.core.entity.enums.*;
import com.github.jaemon.dinger.core.entity.xml.*;
import com.github.jaemon.dinger.exception.DingerException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;

import static com.github.jaemon.dinger.core.entity.enums.ExceptionEnum.DINGERDEFINITIONTYPE_ERROR;

/**
 * DefinitionGenerator
 *
 * @author Jaemon
 * @since 1.0
 */
public class DingerDefinitionHandler {
    private static final Logger log = LoggerFactory.getLogger(DingerDefinitionHandler.class);
    /** 企业微信@所有人标识 */
    public static final String WETALK_AT_ALL = "@all";


    /**
     * 处理注解-Text定义的Dinger消息
     *
     * @param dingerType
     *          Dinger类型 {@link DingerType}
     * @param context
     *          Dinger定义源
     * @return
     *          dingerDefinition {@link DingerDefinition}
     */
    protected static DingerDefinition dingerTextHandler(DingerType dingerType, DingerDefinitionGeneratorContext context) {
        String keyName = context.getKeyName();
        DingerText dinger = context.getSource();

        DingerDefinition dingerDefinition = annotationDingerDefition(keyName, dinger.tokenId(), dinger.asyncExecute());
        dingerDefinition.setDingerType(dingerType);
        dingerDefinition.setMessageSubType(MessageSubType.TEXT);

        DingerRequest request;

        if (dinger.atAll()) {
            request = DingerRequest.request(dinger.value(), true);
        } else {
            request = DingerRequest.request(dinger.value(), Arrays.asList(dinger.phones()));
        }

        MsgType msgType = dingerDefinition.messageSubType().msgType(
                dingerType, request);
        dingerDefinition.setMessage(msgType);

        return dingerDefinition;
    }

    /**
     * 处理注解-Markdown定义的Dinger消息
     *
     * @param dingerType
     *          Dinger类型 {@link DingerType}
     * @param context
     *          Dinger定义源
     * @return
     *          dingerDefinition {@link DingerDefinition}
     */
    protected static DingerDefinition dingerMarkdownHandler(DingerType dingerType, DingerDefinitionGeneratorContext context) {
        String keyName = context.getKeyName();
        DingerMarkdown dinger = context.getSource();

        DingerDefinition dingerDefinition = annotationDingerDefition(keyName, dinger.tokenId(), dinger.asyncExecute());
        dingerDefinition.setDingerType(dingerType);
        dingerDefinition.setMessageSubType(MessageSubType.MARKDOWN);

        // markdown not support at all members
        DingerRequest request  = DingerRequest.request(dinger.value(), dinger.title(), Arrays.asList(dinger.phones()));
        MsgType msgType = dingerDefinition.messageSubType().msgType(dingerType, request);
        dingerDefinition.setMessage(msgType);

        return dingerDefinition;
    }

    /**
     * 处理注解-ImageText定义的Dinger消息
     *
     * @param dingerType
     *          Dinger类型 {@link DingerType}
     * @param context
     *          Dinger定义源
     * @return
     *          dingerDefinition {@link DingerDefinition}
     */
    protected static DingerDefinition dingerImageTextHandler(DingerType dingerType, DingerDefinitionGeneratorContext context) {
        String keyName = context.getKeyName();
        DingerImageText dinger = context.getSource();
        DingerDefinition dingerDefinition = annotationDingerDefition(keyName, dinger.tokenId(), dinger.asyncExecute());
        dingerDefinition.setDingerType(dingerType);
        dingerDefinition.setMessageSubType(MessageSubType.IMAGETEXT);

        MsgType msgType = dingerDefinition.messageSubType().msgType(dingerType, null);
        dingerDefinition.setMessage(msgType);

        return dingerDefinition;
    }

    /**
     * 处理注解-Link定义的Dinger消息
     *
     * @param dingerType
     *          Dinger类型 {@link DingerType}
     * @param context
     *          Dinger定义源
     * @return
     *          dingerDefinition {@link DingerDefinition}
     */
    protected static DingerDefinition dingerLinkHandler(DingerType dingerType, DingerDefinitionGeneratorContext context) {
        String keyName = context.getKeyName();
        DingerLink dinger = context.getSource();
        DingerDefinition dingerDefinition = annotationDingerDefition(keyName, dinger.tokenId(), dinger.asyncExecute());
        dingerDefinition.setDingerType(dingerType);
        dingerDefinition.setMessageSubType(MessageSubType.LINK);

        MsgType msgType = dingerDefinition.messageSubType().msgType(dingerType, null);
        dingerDefinition.setMessage(msgType);

        return dingerDefinition;
    }


    /**
     * 处理Xml定义的Dinger消息
     *
     * @param dingerDefinitionType
     *          Dinger消息体定义类型
     * @param context
     *          Dinger定义源
     * @return
     *          dingerDefinition {@link DingerDefinition}
     */
    protected static DingerDefinition xmlHandler(
            DingerDefinitionType dingerDefinitionType,
            DingerDefinitionGeneratorContext context
    ) {
        MessageMainType messageMainType = dingerDefinitionType.messageMainType();
        if (messageMainType != MessageMainType.XML) {
            throw new DingerException(
                    DINGERDEFINITIONTYPE_ERROR, dingerDefinitionType, MessageMainType.XML, messageMainType
            );
        }

        String keyName = context.getKeyName();
        MessageTag messageTag = context.getSource();
        DingerDefinition dingerDefinition = new DefaultDingerDefinition();
        dingerDefinition.setDingerType(dingerDefinitionType.dingerType());
        dingerDefinition.setMessageMainType(messageMainType);
        dingerDefinition.setMessageSubType(dingerDefinitionType.messageSubType());
        dingerDefinition.setDingerName(keyName);

        // 处理DingerConfig逻辑
        DingerConfig dingerConfig = new DingerConfig();
        dingerDefinition.setDingerConfig(dingerConfig);
        Optional configuration = Optional.ofNullable(messageTag.getConfiguration());
        dingerConfig(dingerConfig, configuration);

        DingerRequest request = null;
        if (dingerDefinitionType.messageSubType().isSupport()) {
            Optional body = Optional.ofNullable(messageTag.getBody());

            // 处理@成员逻辑
            Optional phonesTag = body.map(e -> e.getPhones());
            Boolean atAll = phonesTag.map(e -> e.getAtAll()).orElse(false);

            List phoneTags = phonesTag.map(e -> e.getPhones()).orElse(null);
            List phones;
            if (phoneTags != null) {
                phones = phoneTags.stream().map(PhoneTag::getValue).collect(Collectors.toList());
            } else {
                phones = new ArrayList<>();
            }

            // 处理消息体逻辑
            Optional contentTag = body.map(e -> e.getContent());
            String content = contentTag.map(e -> e.getContent()).orElse("");
            String title = contentTag.map(e -> e.getTitle()).orElse("Dinger Title");

            if (atAll) {
                request = DingerRequest.request(content, title, true);
            } else {
                request = DingerRequest.request(content, title, phones);
            }
        }

        MsgType message = dingerDefinitionType.messageSubType().msgType(dingerDefinitionType.dingerType(), request);
        dingerDefinition.setMessage(message);

        return dingerDefinition;
    }


    /**
     * 从注解内容提取dingerDefinition
     *
     * @param dingerName
     *          dingerName
     * @param dingerTokenId
     *          dingerTokenId
     * @param asyncExecuteType
     *          asyncExecuteType
     * @return
     *      dingerDefinition {@link DingerDefinition}
     */
    private static DingerDefinition annotationDingerDefition(
            String dingerName, DingerTokenId dingerTokenId,
            AsyncExecuteType asyncExecuteType
    ) {
        DingerDefinition dingerDefinition = new DefaultDingerDefinition();

        dingerDefinition.setMessageMainType(MessageMainType.ANNOTATION);
        dingerDefinition.setDingerName(dingerName);
        DingerConfig dingerConfig = dingerConfig(dingerTokenId);
        dingerConfig.setAsyncExecute(
                asyncExecuteType == AsyncExecuteType.NONE ?
                        null : asyncExecuteType.type()
        );
        dingerDefinition.setDingerConfig(dingerConfig);

        return dingerDefinition;
    }

    /**
     * dingerConfig从configuration中获取
     *
     * @param dingerConfig
     *          dingerConfig
     * @param configuration
     *          xml中配置的configuration
     */
    private static void dingerConfig(DingerConfig dingerConfig, Optional configuration) {
        if (configuration.isPresent()) {
            Optional tokenId = configuration.map(e -> e.getTokenId());
            if (tokenId.isPresent()) {
                dingerConfig.setTokenId(
                        tokenId.map(e -> e.getValue()).orElse(null)
                );
                dingerConfig.setDecryptKey(
                        tokenId.map(e -> e.getDecryptKey()).orElse(null)
                );
                dingerConfig.setSecret(
                        tokenId.map(e -> e.getSecret()).orElse(null)
                );
            }

            dingerConfig.setAsyncExecute(
                    configuration.map(e -> (e.getAsync() == null)
                            ? e.getAsyncExecute() : e.getAsync()).orElse(false)
            );
            // do check dingtalk config by person
            dingerConfig.check();
        }
    }

    /**
     * 从dingerTokenId解析DingerConfig
     *
     * @param dingerTokenId
     *          dingerTokenId
     * @return
     *          dingerConfig
     */
    private static DingerConfig dingerConfig(DingerTokenId dingerTokenId) {
        DingerConfig dingerConfig = new DingerConfig();
        dingerConfig.setTokenId(dingerTokenId.value());
        dingerConfig.setSecret(dingerTokenId.secret());
        dingerConfig.setDecryptKey(dingerTokenId.decryptKey());
        dingerConfig.check();
        return dingerConfig;
    }

}




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