package com.kmall.admin.fromcomm.controller;

import com.google.code.kaptcha.Constants;
import com.google.code.kaptcha.Producer;
import com.kmall.common.annotation.SysLog;
import com.kmall.common.utils.R;
import com.kmall.admin.utils.ShiroUtils;
import com.kmall.manager.manager.redis.JedisUtil;
import org.apache.shiro.authc.*;
import org.apache.shiro.crypto.hash.Sha256Hash;
import org.apache.shiro.subject.Subject;
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.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.imageio.ImageIO;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;

/**
 * 登录相关
 *
 * @author Scott
 * @email
 * @date 2016年11月10日 下午1:15:31
 */
@Controller
public class SysLoginController {
    @Autowired
    private Producer producer;
    public static int wsTokenExpireTime = 3600 * 24 * 30;

    @RequestMapping("captcha.jpg")
    public void captcha(HttpServletResponse response, HttpSession session) throws ServletException, IOException {
        response.setHeader("Cache-Control", "no-store, no-cache");
        response.setContentType("image/jpeg");

        //生成文字验证码
        String text = producer.createText();
        //生成图片验证码
        BufferedImage image = producer.createImage(text);
        //保存到shiro session
        JedisUtil.set(Constants.KAPTCHA_SESSION_KEY, text, wsTokenExpireTime);

        ServletOutputStream out = response.getOutputStream();
        ImageIO.write(image, "jpg", out);
    }

    /**
     * 登录
     */
    @SysLog("登录")
    @ResponseBody
    @RequestMapping(value = "/sys/login", method = RequestMethod.POST)
    public R login(String username, String password, String captcha,HttpSession session) throws IOException {
        String kaptcha = (String) JedisUtil.get(Constants.KAPTCHA_SESSION_KEY);
        System.out.println(kaptcha);
        JedisUtil.del(Constants.KAPTCHA_SESSION_KEY);
        if (!captcha.equalsIgnoreCase(kaptcha)) {
            return R.error("验证码不正确");
        }

        try {
            Subject subject = ShiroUtils.getSubject();
            //sha256加密
            password = new Sha256Hash(password).toHex();
            UsernamePasswordToken token = new UsernamePasswordToken(username, password);
            subject.login(token);
        } catch (UnknownAccountException e) {
            return R.error(e.getMessage());
        } catch (IncorrectCredentialsException e) {
            return R.error(e.getMessage());
        } catch (LockedAccountException e) {
            return R.error(e.getMessage());
        } catch (AuthenticationException e) {
            return R.error("账户验证失败");
        }

        Set<String> permsSet = new HashSet<>();
        if (null != ShiroUtils.getUserEntity()) {
            permsSet = ShiroUtils.getUserEntity().getPermsSet();
        }
        return R.ok().put("permsSet", permsSet);
    }

    /**
     * 退出
     */
    @RequestMapping(value = "logout", method = RequestMethod.GET)
    public String logout() {
        ShiroUtils.logout();
        return "redirect:/";
    }

}
