package com.rzyc.service;


import com.common.utils.jwt.JwtUtil;

import com.rzyc.advice.CustomException;
import com.rzyc.config.UserDetailsAndId;
import com.rzyc.enums.SysEnterpriseState;
import com.rzyc.mapper.ent.SysEnterpriseMapper;
import com.rzyc.model.ent.SysEnterprise;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.stereotype.Service;
import java.util.Objects;

/**
 * 用户登陆 Service
 * @author Xuwanxin
 * @date 2022/9/26
 * */

@Service
public class UserLoginService {

    /**
     * spring security 登陆业务接口service
     * */
    private UserDetailsService userDetailsService;


    /**
     * spring security 内存中加密
     * */
    private PasswordEncoder passwordEncoder;

    /**
     * 企业端公司
     * */
    private SysEnterpriseMapper sysEnterpriseMapper;


    @Autowired
    public void UserLoginServiceFinder(UserDetailsService userDetailsService,PasswordEncoder passwordEncoder,SysEnterpriseMapper sysEnterpriseMapper){
        this.userDetailsService = userDetailsService;
        this.passwordEncoder = passwordEncoder;
        this.sysEnterpriseMapper= sysEnterpriseMapper;
    }

    public String login(String username, String password)throws Exception {
        String token = null;
        try {
            UserDetails userDetails = userDetailsService.loadUserByUsername(username);
            if (Objects.isNull(userDetails)) {
                throw new UsernameNotFoundException("账号不存在");
            }
            SysEnterprise sysEnterprise = sysEnterpriseMapper.findEnterpriseByName(username);
            if (Objects.isNull(sysEnterprise) || sysEnterprise.getState().equals(SysEnterpriseState.DISABLE)){
                throw new CustomException("企业不存在或已经禁用");
            }
            //这里可能会不对，因为我们是MD5，这个是spring security 中的 encoder加密
            if (!passwordEncoder.matches(password, userDetails.getPassword())) {
                throw new BadCredentialsException("密码不正确");
            }
            //spring security context insert
            UsernamePasswordAuthenticationToken authentication = new UsernamePasswordAuthenticationToken(userDetails, null, userDetails.getAuthorities());
            SecurityContextHolder.getContext().setAuthentication(authentication);
            //企业用户id
            String id = ((UserDetailsAndId)SecurityContextHolder.getContext().getAuthentication().getPrincipal()).getId();
            token = JwtUtil.createToken(id);
        } catch (AuthenticationException e) {
            e.printStackTrace();
        }
        return token;
    }
}