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Cattle Framework Addons WeChat Component
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/*
 * Copyright (C) 2018 the original author or authors.
 *
 * 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.gitlab.summercattle.addons.wechat.common.service.impl;

import java.util.Date;

import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.http.MediaType;
import org.springframework.stereotype.Service;

import com.alibaba.fastjson2.JSONObject;
import com.gitlab.summercattle.addons.wechat.common.AppType;
import com.gitlab.summercattle.addons.wechat.common.service.RidInfo;
import com.gitlab.summercattle.addons.wechat.common.service.WeChatService;
import com.gitlab.summercattle.addons.wechat.constants.WeChatConstants;
import com.gitlab.summercattle.addons.wechat.memory.TokenMemoryService;
import com.gitlab.summercattle.addons.wechat.miniprogram.configure.MiniProgramConfigProperties;
import com.gitlab.summercattle.addons.wechat.miniprogram.configure.MiniProgramApplication;
import com.gitlab.summercattle.addons.wechat.officialaccounts.configure.OfficialAccountsConfigProperties;
import com.gitlab.summercattle.addons.wechat.officialaccounts.configure.OfficialAccountsApplication;
import com.gitlab.summercattle.addons.wechat.utils.ApplicationUtils;
import com.gitlab.summercattle.commons.exception.CommonException;
import com.gitlab.summercattle.commons.utils.reflect.ClassType;
import com.gitlab.summercattle.commons.utils.reflect.ReflectUtils;
import com.gitlab.summercattle.commons.utils.spring.RestTemplateUtils;

/**
 * 微信服务实现
 * @author orange
 *
 */
@Service
public class WeChatServiceImpl implements WeChatService {

	private static final Logger logger = LoggerFactory.getLogger(WeChatServiceImpl.class);

	@Autowired
	private MiniProgramConfigProperties miniProgramConfigProperties;

	@Autowired
	private OfficialAccountsConfigProperties officialAccountsConfigProperties;

	@Autowired
	private TokenMemoryService tokenMemoryService;

	@Autowired
	@Qualifier(WeChatConstants.REST_TEMPLATE_UTILS_NAME)
	private RestTemplateUtils restTemplateUtils;

	@Override
	public String getAccessToken(AppType type, String source) throws CommonException {
		if (type == null) {
			throw new CommonException("应用类型为空");
		}
		if (StringUtils.isBlank(source)) {
			throw new CommonException("来源为空");
		}
		String accessToken = null;
		String appId;
		String secret;
		if (type == AppType.OfficialAccounts) {
			OfficialAccountsApplication officialAccountsApplication = ApplicationUtils.getOfficialAccountsApplication(source,
					officialAccountsConfigProperties);
			appId = officialAccountsApplication.getAppId();
			secret = officialAccountsApplication.getSecret();
		}
		else if (type == AppType.MiniProgram) {
			MiniProgramApplication miniProgramApplication = ApplicationUtils.getMiniProgramApplication(source, miniProgramConfigProperties);
			appId = miniProgramApplication.getAppId();
			secret = miniProgramApplication.getSecret();
		}
		else {
			throw new CommonException("应用类型'" + type.toString() + "'无效");
		}
		accessToken = tokenMemoryService.get(type, source, appId);
		if (StringUtils.isBlank(accessToken)) {
			String url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + appId + "&secret=" + secret;
			logger.debug("微信的访问令牌请求地址:" + url);
			JSONObject respJson = restTemplateUtils.get(url, null, null, JSONObject.class);
			logger.debug("微信的访问令牌返回:" + respJson.toString());
			boolean isErrMsg = respJson.containsKey("errmsg");
			if (isErrMsg) {
				throw new CommonException(
						"微信获取访问令牌接口异常,错误码:" + ((String) ReflectUtils.convertValue(ClassType.String, respJson.getIntValue("errcode"))) + ",错误信息:"
								+ respJson.getString("errmsg"));
			}
			accessToken = respJson.getString("access_token");
			tokenMemoryService.save(type, source, appId, accessToken, respJson.getLongValue("expires_in"));
		}
		return accessToken;
	}

	@Override
	public RidInfo getRidInfo(AppType type, String source, String rid) throws CommonException {
		if (StringUtils.isBlank(rid)) {
			throw new CommonException("Rid号为空");
		}
		String accessToken = getAccessToken(type, source);
		if (StringUtils.isBlank(accessToken)) {
			if (type == AppType.MiniProgram) {
				throw new CommonException("微信小程序访问令牌为空");
			}
			else if (type == AppType.OfficialAccounts) {
				throw new CommonException("微信公众号访问令牌为空");
			}
		}
		JSONObject requestJson = new JSONObject();
		requestJson.put("rid", rid);
		String url = "https://api.weixin.qq.com/cgi-bin/openapi/rid/get?access_token=" + accessToken;
		logger.debug("查询Rid详情信息接口,地址:" + url + ",请求Json:" + requestJson.toString());
		JSONObject resultJson = restTemplateUtils.post(url, MediaType.APPLICATION_JSON, null, requestJson, JSONObject.class);
		logger.debug("查询Rid详情信息接口,返回Json:" + resultJson.toString());
		int errcode = resultJson.getIntValue("errcode");
		if (errcode != 0) {
			throw new CommonException("查询Rid详情信息接口异常,错误码:" + resultJson.getIntValue("errcode") + ",错误信息:" + resultJson.getString("errmsg"));
		}
		JSONObject resultRequestJson = resultJson.getJSONObject("request");
		return new RidInfo(new Date(resultRequestJson.getLongValue("invoke_time") * 1000L), resultRequestJson.getLongValue("cost_in_ms"),
				resultRequestJson.getString("request_url"), resultRequestJson.getString("request_body"), resultRequestJson.getString("response_body"),
				resultRequestJson.getString("client_ip"));
	}
}