package com.fdc.home.dec.wx.controller;

import com.fdc.home.dec.service.inter.service.DecWxService;
import com.fdc.home.dec.wx.service.CheckUserInfo;
import com.fdc.home.dec.wx.utils.JSONHelper;
import com.fdc.home.dec.wx.utils.WxUtils;
import com.fdc.home.dec.wx.vo.token.WeixinOauth2Token;
import com.fdc.home.dec.wx.vo.user.WeixinUserInfo;
 
import com.fdc.platform.common.yfutil.PropertyReader;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

import javax.servlet.http.Cookie;
 
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

/**
 * Created by pl on 2017/1/13.
 */
@Controller
public class OAuth2Controller {

    @Autowired
    private DecWxService decWxService;
    //判斷使用者是否登入的公用方法
 

    CheckUserInfo checkUserInfo = new CheckUserInfo();
    //從配置檔案獲取appid
    public static String appid = PropertyReader.getValue("appid");
    //從配置檔案獲取appsecret
    public static String appsecret = PropertyReader.getValue("appsecret");
    //從配置檔案獲取主域名
    public static String indexUrl = PropertyReader.getValue("indexUrl");
    public static String wtoken = PropertyReader.getValue("wholetoken");

    /**
     * 組裝授權url
     * @param request
     * @param resultUrl
     * @return
     */
    @RequestMapping(value ="/oauth2Api")
    public String oauth2API(HttpServletRequest request, @RequestParam String resultUrl) {
        String redirectUrl = "";
        if (resultUrl != null) {
            String backUrl =indexUrl+"/oauth2MeUrl?oauth2url="+resultUrl;
            //組裝授權url
            redirectUrl = WxUtils.oAuth2Url(appid, backUrl);
        }
        return "redirect:" + redirectUrl;
    }

    /**
     * 獲取使用者資訊
     * @param request
     * @param response
     * @param code
     * @param oauth2url
     * @return
     * @throws IOException
     */
    @RequestMapping(value = "/oauth2MeUrl")
    public String oauth2MeUrl(HttpServletRequest request,HttpServletResponse response, @RequestParam String code, @RequestParam String oauth2url) throws IOException {
        request.setCharacterEncoding("utf-8");
        response.setCharacterEncoding("utf-8");
        HttpSession session = request.getSession();
        session.setAttribute("code",code);
        // 使用者同意授權
        if (!"authdeny".equals(code)) {
            // 獲取網頁授權access_token
            WeixinOauth2Token weixinOauth2Token = WxUtils.getOauth2AccessToken(appid, appsecret, code);
            // 網頁授權介面訪問憑證
            String accessToken = weixinOauth2Token.getAccessToken();
            // 使用者標識
            String openId = weixinOauth2Token.getOpenId();
            String wholetoken = decWxService.getToken(wtoken);
            //獲取微信使用者openid儲存在cookie中的資訊
            Cookie userCookie=new Cookie("openId",openId);
            userCookie.setMaxAge(-1);
            userCookie.setPath("/");
            response.addCookie(userCookie);
            WeixinUserInfo weixinUserInfo = WxUtils.getWeixinUserInfo(wholetoken, openId);
            //將使用者資訊寫入redis
            decWxService.setToken(openId, JSONHelper.beanToJson(weixinUserInfo));
        }else {
            return "redirect:"+indexUrl+"/error404";
        }
        return "redirect:" + oauth2url;
    }
}