package com.supervision.controller;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.net.NetUtil;
import cn.hutool.core.util.ObjectUtil;
import cn.hutool.core.util.StrUtil;
import cn.hutool.json.JSONObjectIter;
import cn.hutool.json.JSONUtil;
import com.supervision.constant.UserTokenConstant;
import com.supervision.exception.BusinessException;
import com.supervision.model.User;
import com.supervision.pojo.vo.LoginReqVO;
import com.supervision.pojo.vo.LoginResVO;
import com.supervision.pojo.vo.UserInfoReqVo;
import com.supervision.pojo.vo.UserInfoResVo;
import com.supervision.service.UserManageService;
import com.supervision.service.UserService;
import com.supervision.websocket.dto.UserWebSocketDTO;
import com.supervision.websocket.UserResourceCheck;
import com.supervision.util.TokenUtil;
import com.supervision.util.UserUtil;
import com.supervision.websocket.dto.WebSocketLoginDTO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.RequiredArgsConstructor;
import org.apache.xmlbeans.impl.common.IOUtil;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.data.redis.core.Cursor;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.ScanOptions;
import org.springframework.web.bind.annotation.*;

import java.io.IOException;
import java.time.LocalDateTime;
import java.util.Map;
import java.util.Optional;

@Api(tags = "用户管理")
@RestController
@RequestMapping("user")
@RequiredArgsConstructor
public class UserController {

    private final UserService userService;

    private final RedisTemplate<String, String> redisTemplate;

    private final UserManageService userManageService;

    private final UserResourceCheck userResourceCheck;


    @Value("${ws.nginx-ip:}")
    private String wsIp;
    @Value("${ws.nginx-port:}")
    private String wsPort;

    @Value("${spring.profiles.active}")
    private String active;
    @Value("${server.port}")
    private String port;

    @ApiOperation("登录")
    @PostMapping("login")
    public LoginResVO login(@RequestBody LoginReqVO reqVO) {
        if (!StrUtil.isAllNotBlank(reqVO.getUserAccount(), reqVO.getPassword())) {
            throw new BusinessException("用户名不能为空");
        }
        Optional<User> user = userService.lambdaQuery().eq(User::getAccount, reqVO.getUserAccount()).last("limit 1").oneOpt();
        if (!user.isPresent() || !user.get().getPassword().equals(reqVO.getPassword())) {
            throw new BusinessException("用户名或密码有误！");
        }
        // 更新用户最近的登录时间
        user.get().setRecentLoginTime(LocalDateTime.now());
        userService.updateById(user.get());
        String token = TokenUtil.creatToken(JSONUtil.toJsonStr(user.get()));

        LoginResVO loginResVO = BeanUtil.toBean(user.get(), LoginResVO.class);
        loginResVO.setToken(token);
        return loginResVO;
    }

    @ApiOperation("踢用户下线")
    @GetMapping("kickUser")
    public void kickUser(String uuid, String userId) throws IOException {
        if (StrUtil.isNotBlank(uuid)) {
            redisTemplate.convertAndSend(UserTokenConstant.KICK_CHANNEL, JSONUtil.toJsonStr(new UserWebSocketDTO(uuid)));
        } else {
            ScanOptions options = ScanOptions.scanOptions()
                    .match("*" + userId + "*")     // 可选：使用模式匹配指定要匹配的键
                    .count(10)                 // 可选：指定每次迭代返回的元素数量
                    .build();

            Cursor<Map.Entry<Object, Object>> cursor = null;
            try {
                cursor = redisTemplate.opsForHash().scan(UserTokenConstant.USER_WEBSOCKET_CACHE, options);
                while (cursor.hasNext()) {
                    Map.Entry<Object, Object> entry = cursor.next();
                    Object value = entry.getValue();
                    WebSocketLoginDTO bean = JSONUtil.toBean(String.valueOf(value), WebSocketLoginDTO.class);
                    if (userId.equals(bean.getUserId())) {
                        redisTemplate.convertAndSend(UserTokenConstant.KICK_CHANNEL, JSONUtil.toJsonStr(new UserWebSocketDTO(bean.getUserId())));
                    }
                }
            } catch (Exception e) {
                if (ObjectUtil.isNotNull(cursor)) {
                    cursor.close();
                }
            }
        }
    }

    @ApiOperation("查看资源是否有剩余")
    @GetMapping("resourceIsFree")
    public boolean resourceIsFree() {
        return userResourceCheck.achieveDiagnoseResource();
    }

    @ApiOperation("修改用户信息")
    @PutMapping("updateUserInfo")
    public boolean updateUserInfo(@RequestBody UserInfoReqVo userInfo) {

        return userManageService.updateUserInfo(userInfo);
    }

    @ApiOperation("查看账号信息")
    @GetMapping("getUserAccountInfo")
    public UserInfoResVo getUserAccountInfo() {
        User user = UserUtil.getUser();
        return userManageService.getUserAccountInfo(user.getId());
    }

    @ApiOperation("获取本机IP地址,用来给websocket使用")
    @GetMapping("queryWebSocketUrl")
    public String queryWebSocketUrl() {
        // 如果是本地开发环境,则获取本机IP地址
        if ("local".equals(active)) {
            String template = "ws://{}:{}/virtual-patient/";
            String localhostStr = NetUtil.getLocalhostStr();
            return StrUtil.format(template, localhostStr, port);
        } else {
            String template = "wss://{}:{}/virtual-patient-websocket/";
            if (StrUtil.isNotBlank(wsIp) && StrUtil.isNotBlank(wsPort)) {
                return StrUtil.format(template, wsIp, wsPort);
            }
        }

        throw new BusinessException("未获取到ws的nginx地址,请确认配置文件是否配置");
    }

    @ApiOperation("获取当前在线的用户")
    @GetMapping("queryCurrentOnlineUser")
    public Map<Object, Object> queryCurrentOnlineUser() {
        return redisTemplate.opsForHash().entries(UserTokenConstant.USER_WEBSOCKET_CACHE);
    }


}