package com.yupi.springbootinit.service.impl;

import cn.dev33.satoken.stp.StpUtil;
import cn.hutool.core.bean.BeanUtil;
import com.yupi.springbootinit.common.ErrorCode;
import com.yupi.springbootinit.exception.BusinessException;
import com.yupi.springbootinit.model.dto.user.SystemUsersDTO;
import com.yupi.springbootinit.model.entity.SystemUsers;
import com.yupi.springbootinit.model.enums.CommonStatusEnum;
import com.yupi.springbootinit.model.enums.LoginSceneEnum;
import com.yupi.springbootinit.model.vo.user.SystemUsersVO;
import com.yupi.springbootinit.service.SystemUsersService;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;

@Service
@RequiredArgsConstructor
public class LoginService {

    private final SystemUsersService usersService;

    public SystemUsersVO login(LoginSceneEnum scene, SystemUsersDTO dto) {
        SystemUsers user = validateUser(dto);           // 校验用户名、密码、状态、租户过期
        checkRole(scene, user.getId());                 // 按场景做角色校验
        Long second = usersService.getTenantExpiredTime(dto.getTenantId());
        // Sa-Token 登录
        StpUtil.login(user.getId(), scene.getSaMode());
        StpUtil.renewTimeout(second);
        SystemUsersVO vo = new SystemUsersVO();
        BeanUtil.copyProperties(user, vo);
        vo.setTokenName(StpUtil.getTokenName());
        vo.setTokenValue(StpUtil.getTokenValue());
        return vo;
    }

    private SystemUsers validateUser(SystemUsersDTO dto) {
        SystemUsers user = usersService.getUserByUserName(dto.getUsername(), dto.getTenantId());
        if (user == null) throw new BusinessException(ErrorCode.USERNAME_OR_PASSWORD_ERROR);
        if (!usersService.isPasswordMatch(dto.getPassword(), user.getPassword()))
            throw new BusinessException(ErrorCode.USERNAME_OR_PASSWORD_ERROR);
        if (CommonStatusEnum.isDisable(Integer.valueOf(user.getStatus())))
            throw new BusinessException(ErrorCode.USER_DISABLE);
        if (usersService.isExpired(dto.getTenantId()))
            throw new BusinessException(ErrorCode.PACKAGE_EXPIRED);
        return user;
    }

    private void checkRole(LoginSceneEnum scene, Long userId) {
        Boolean pass = switch (scene) {
            case HOST -> usersService.checkCrawlRole(userId);
            case BIG_BROTHER -> usersService.checkbigBrotherlRole(userId);
            case AI_CHAT -> usersService.checkAiCHatLoginRole(userId);
        };
        if (!pass) throw new BusinessException(ErrorCode.LOGIN_NOW_ALLOWED);
    }
}