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基于 Spring Authorization Server 的微信小程序外部接入基础核心组件模块
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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2020-2030 郑庚伟 ZHENGGENGWEI (码匠君),  Licensed under the AGPL License
 *
 * This file is part of Herodotus Engine.
 *
 * Herodotus Engine is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Herodotus Engine is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see .
 */

package cn.herodotus.engine.access.wxapp.processor;

import cn.binarywang.wx.miniapp.bean.WxMaJscode2SessionResult;
import cn.binarywang.wx.miniapp.bean.WxMaUserInfo;
import cn.herodotus.engine.access.core.definition.AccessHandler;
import cn.herodotus.engine.access.core.definition.AccessResponse;
import cn.herodotus.engine.access.core.definition.AccessUserDetails;
import cn.herodotus.engine.access.core.exception.AccessIdentityVerificationFailedException;
import cn.herodotus.engine.access.core.exception.AccessPreProcessFailedException;
import cn.herodotus.engine.assistant.definition.constants.SymbolConstants;
import cn.herodotus.engine.assistant.definition.domain.oauth2.AccessPrincipal;
import cn.herodotus.engine.assistant.core.enums.AccountType;
import org.apache.commons.lang3.ObjectUtils;

/**
 * Description: 微信小程序接入处理器 
 *
 * @author : gengwei.zheng
 * @date : 2022/1/26 10:56
 */
public class WxappAccessHandler implements AccessHandler {

    private final WxappProcessor wxappProcessor;

    public WxappAccessHandler(WxappProcessor wxappProcessor) {
        this.wxappProcessor = wxappProcessor;
    }

    @Override
    public AccessResponse preProcess(String core, String... params) {
        WxMaJscode2SessionResult wxMaSession = wxappProcessor.login(core, params[0]);
        if (ObjectUtils.isNotEmpty(wxMaSession)) {
            AccessResponse accessResponse = new AccessResponse();
            accessResponse.setSession(wxMaSession);
            return accessResponse;
        }

        throw new AccessPreProcessFailedException("Wxapp login failed");
    }

    @Override
    public AccessUserDetails loadUserDetails(String source, AccessPrincipal accessPrincipal) {
        WxMaUserInfo wxMaUserInfo = wxappProcessor.getUserInfo(accessPrincipal.getAppId(), accessPrincipal.getSessionKey(), accessPrincipal.getEncryptedData(), accessPrincipal.getIv());
        if (ObjectUtils.isNotEmpty(wxMaUserInfo)) {
            return convertWxMaUserInfoToAccessUserDetails(wxMaUserInfo, accessPrincipal);
        }

        throw new AccessIdentityVerificationFailedException("Can not find the userinfo from Wechat!");
    }

    private AccessUserDetails convertWxMaUserInfoToAccessUserDetails(WxMaUserInfo wxMaUserInfo, AccessPrincipal accessPrincipal) {
        AccessUserDetails accessUserDetails = new AccessUserDetails();
        accessUserDetails.setUuid(accessPrincipal.getOpenId());
        accessUserDetails.setUsername(wxMaUserInfo.getNickName());
        accessUserDetails.setNickname(wxMaUserInfo.getNickName());
        accessUserDetails.setAvatar(wxMaUserInfo.getAvatarUrl());
        accessUserDetails.setLocation(wxMaUserInfo.getCountry() + SymbolConstants.FORWARD_SLASH + wxMaUserInfo.getProvince() + SymbolConstants.FORWARD_SLASH + wxMaUserInfo.getCity());
        accessUserDetails.setSource(AccountType.WXAPP.name());
        accessUserDetails.setOpenId(accessPrincipal.getOpenId());
        accessUserDetails.setUnionId(accessPrincipal.getUnionId());
        accessUserDetails.setAppId(wxMaUserInfo.getWatermark().getAppid());
        accessUserDetails.setPhoneNumber(wxMaUserInfo.getWatermark().getAppid());
        return accessUserDetails;
    }
}