package com.ruoyi.common.security.service;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import javax.servlet.http.HttpServletRequest;

import com.ruoyi.common.core.exception.user.UserAppletException;
import com.ruoyi.system.api.model.LoginUserApplet;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import com.ruoyi.common.core.constant.CacheConstants;
import com.ruoyi.common.core.constant.SecurityConstants;
import com.ruoyi.common.core.utils.JwtUtils;
import com.ruoyi.common.core.utils.ServletUtils;
import com.ruoyi.common.core.utils.StringUtils;
import com.ruoyi.common.core.utils.ip.IpUtils;
import com.ruoyi.common.core.utils.uuid.IdUtils;
import com.ruoyi.common.redis.service.RedisService;
import com.ruoyi.common.security.utils.SecurityUtils;
import com.ruoyi.system.api.model.LoginUser;

/**
 * token验证处理
 *
 * @author ruoyi
 */
@Component
public class TokenService {
	@Autowired
	private RedisService redisService;
	
	protected static final long MILLIS_SECOND = 1000;
	
	protected static final long MILLIS_MINUTE = 60 * MILLIS_SECOND;
	
	private final static long expireTime = CacheConstants.EXPIRATION;
	private final static long expireAppletTime = CacheConstants.EXPIRATION_APPLET;
	
	private final static String ACCESS_TOKEN = CacheConstants.LOGIN_TOKEN_KEY;
	
	private final static Long MILLIS_MINUTE_TEN = CacheConstants.REFRESH_TIME * MILLIS_MINUTE;
	
	/**
	 * 创建令牌
	 */
	public Map<String, Object> createToken(LoginUser loginUser) {
		String token = IdUtils.fastUUID();
		Long userId = loginUser.getSysUser().getUserId();
		String userName = loginUser.getSysUser().getUserName();
		loginUser.setToken(token);
		loginUser.setUserid(userId);
		loginUser.setUsername(userName);
		loginUser.setIpaddr(IpUtils.getIpAddr());
		refreshToken(loginUser);
		
		// Jwt存储信息
		Map<String, Object> claimsMap = new HashMap<String, Object>();
		claimsMap.put(SecurityConstants.USER_KEY, token);
		claimsMap.put(SecurityConstants.DETAILS_USER_ID, userId);
		claimsMap.put(SecurityConstants.USER_TYPE, "system");
		claimsMap.put(SecurityConstants.DETAILS_USERNAME, userName);
		
		// 接口返回信息
		Map<String, Object> rspMap = new HashMap<String, Object>();
		rspMap.put("access_token", JwtUtils.createToken(claimsMap));
		rspMap.put("expires_in", expireTime);
		return rspMap;
	}
	
	/**
	 * 创建小程序令牌
	 */
	public Map<String, Object> createTokenApplet(LoginUserApplet loginUser) {
		String token = IdUtils.fastUUID();
		Long userId = loginUser.getUserId();
		String name = loginUser.getName();
		loginUser.setToken(token);
		loginUser.setIpaddr(IpUtils.getIpAddr());
		refreshToken1(loginUser);
		// Jwt存储信息
		Map<String, Object> claimsMap = new HashMap<String, Object>();
		claimsMap.put(SecurityConstants.USER_APPLET_KEY, token);
		claimsMap.put(SecurityConstants.DETAILS_USER_ID, userId);
		claimsMap.put(SecurityConstants.USER_TYPE, "applet");
		claimsMap.put(SecurityConstants.DETAILS_USERNAME, name);
		// 接口返回信息
		Map<String, Object> rspMap = new HashMap<String, Object>();
		rspMap.put("access_token", JwtUtils.createToken(claimsMap));
		rspMap.put("expires_in", expireAppletTime);
		return rspMap;
	}
	
	public LoginUserApplet getLoginUserApplet() {
		LoginUserApplet loginUserAppletToken = getLoginUserAppletToken(ServletUtils.getRequest());
		if (loginUserAppletToken == null) {
			throw new RuntimeException("令牌已过期，请重新登录！");
		}
		return loginUserAppletToken;
	}
	
	public LoginUserApplet getLoginUserAppletToken(HttpServletRequest request) {
		// 获取请求携带的令牌
		String token = SecurityUtils.getToken(request);
		return getLoginUserApplet(token);
	}
	
	/**
	 * 小程序 获取用户身份信息
	 *
	 * @return 用户信息
	 */
	public LoginUserApplet getLoginUserApplet(String token) {
		LoginUserApplet user = null;
		try {
			if (StringUtils.isNotEmpty(token)) {
				String userKey = JwtUtils.getUserKeyApplet(token);
				user = redisService.getCacheObject(getTokenKey(userKey));
				return user;
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return user;
	}
	
	/**
	 * 获取用户身份信息
	 *
	 * @return 用户信息
	 */
	public LoginUser getLoginUser() {
		LoginUser loginUser = getLoginUser(ServletUtils.getRequest());
		if (loginUser == null) {
			throw new RuntimeException("令牌已过期，请重新登录！");
		}
		return loginUser;
	}
	
	/**
	 * 获取用户身份信息
	 *
	 * @return 用户信息
	 */
	public LoginUser getLoginUser(HttpServletRequest request) {
		// 获取请求携带的令牌
		String token = SecurityUtils.getToken(request);
		return getLoginUser(token);
	}
	
	/**
	 * 获取用户身份信息
	 *
	 * @return 用户信息
	 */
	public LoginUser getLoginUser(String token) {
		LoginUser user = null;
		try {
			if (StringUtils.isNotEmpty(token)) {
				String userkey = JwtUtils.getUserKey(token);
				user = redisService.getCacheObject(getTokenKey(userkey));
				return user;
			}
		} catch (Exception e) {
		}
		return user;
	}
	
	/**
	 * 设置用户身份信息
	 */
	public void setLoginUser(LoginUser loginUser) {
		if (StringUtils.isNotNull(loginUser) && StringUtils.isNotEmpty(loginUser.getToken())) {
			refreshToken(loginUser);
		}
	}
	
	/**
	 * 删除用户缓存信息
	 */
	public void delLoginUser(String token) {
		if (StringUtils.isNotEmpty(token)) {
			String userkey = JwtUtils.getUserKey(token);
			redisService.deleteObject(getTokenKey(userkey));
		}
	}
	
	/**
	 * 验证令牌有效期，相差不足120分钟，自动刷新缓存
	 *
	 * @param loginUser
	 */
	public void verifyToken(LoginUser loginUser) {
		long expireTime = loginUser.getExpireTime();
		long currentTime = System.currentTimeMillis();
		if (expireTime - currentTime <= MILLIS_MINUTE_TEN) {
			refreshToken(loginUser);
		}
	}
	
	/**
	 * 刷新令牌有效期
	 *
	 * @param loginUser 登录信息
	 */
	public void refreshToken(LoginUser loginUser) {
		loginUser.setLoginTime(System.currentTimeMillis());
		loginUser.setExpireTime(loginUser.getLoginTime() + expireTime * MILLIS_MINUTE);
		// 根据uuid将loginUser缓存
		String userKey = getTokenKey(loginUser.getToken());
		redisService.setCacheObject(userKey, loginUser, expireTime, TimeUnit.MINUTES);
	}
	
	public void refreshToken1(LoginUserApplet dto) {
		dto.setLoginTime(System.currentTimeMillis());
		dto.setExpireTime(dto.getLoginTime() + expireAppletTime * MILLIS_MINUTE);
		// 根据uuid将loginUser缓存
		String userKey = getTokenKey(dto.getToken());
		redisService.setCacheObject(userKey, dto, expireAppletTime, TimeUnit.MINUTES);
	}
	
	private String getTokenKey(String token) {
		return ACCESS_TOKEN + token;
	}
}