package com.ff.base.utils;

import com.ff.base.constant.Constants;
import com.ff.base.constant.HttpStatus;
import com.ff.base.core.domain.model.LoginUser;
import com.ff.base.exception.ServiceException;
import com.ff.base.system.domain.SysRole;
import com.ff.base.utils.bean.BeanUtils;
import com.ff.base.utils.sign.Md5Utils;
import com.ff.base.utils.spring.SpringUtils;
import com.ff.base.web.service.TokenService;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.util.PatternMatchUtils;

import javax.management.relation.Role;
import java.util.Collection;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;

/**
 * 安全服务工具类
 *
 * @author ff
 */
public class SecurityUtils
{


    /**
     * 获取用户id或null
     *
     * @return {@link Long }
     */
    public static Long getUserIdOrNull()
    {
        try
        {
            return getLoginUser().getUserId();
        }
        catch (Exception e)
        {
           return null;
        }
    }

    /**
     * 用户ID
     **/
    public static Long getUserId()
    {
        try
        {
            return getLoginUser().getUserId();
        }
        catch (Exception e)
        {
            throw new ServiceException("获取用户ID异常", HttpStatus.UNAUTHORIZED);
        }
    }


    /**
     * 获取角色
     *
     * @return {@link List }<{@link SysRole }>
     */
    public static List<SysRole> getRoles()
    {
        try
        {
            return getLoginUser().getUser().getRoles();
        }
        catch (Exception e)
        {
            throw new ServiceException("获取用户角色异常", HttpStatus.UNAUTHORIZED);
        }
    }

    /**
     * 获取部门ID
     **/
    public static Long getDeptId()
    {
        try
        {
            return getLoginUser().getDeptId();
        }
        catch (Exception e)
        {
            throw new ServiceException("获取部门ID异常", HttpStatus.UNAUTHORIZED);
        }
    }

    /**
     * 获取用户账户
     **/
    public static String getUsername()
    {
        try
        {
            return getLoginUser().getUsername();
        }
        catch (Exception e)
        {
            throw new ServiceException("获取用户账户异常", HttpStatus.UNAUTHORIZED);
        }
    }

    /**
     * 获取用户账户
     **/
    public static String getUsernameOrNull()
    {
        try
        {
            return getLoginUser().getUsername();
        }
        catch (Exception e)
        {
            return null;
        }
    }


    /**
     * 获取用户
     **/
    public static LoginUser getLoginUser()
    {
        try
        {
            return (LoginUser) getAuthentication().getPrincipal();
        }
        catch (Exception e)
        {
            throw new ServiceException("获取用户信息异常", HttpStatus.UNAUTHORIZED);
        }
    }

    public static void setLoginUser(LoginUser loginUser)
    {
        try
        {
            LoginUser principal = (LoginUser) getAuthentication().getPrincipal();
            BeanUtils.copyProperties(loginUser,principal);
            UsernamePasswordAuthenticationToken authentication = (UsernamePasswordAuthenticationToken) SecurityContextHolder.getContext().getAuthentication();
            UsernamePasswordAuthenticationToken copy = new UsernamePasswordAuthenticationToken(principal,null);
            // 修改原对象为空的字段不修改
            BeanUtils.nullAwareCopyProperties(copy,authentication);
            SecurityContextHolder.getContext().setAuthentication(authentication);
            SpringUtils.getBean(TokenService.class).setLoginUser(loginUser);

        }
        catch (Exception e)
        {
            throw new ServiceException("获取用户信息异常", HttpStatus.UNAUTHORIZED);
        }
    }

    /**
     * 获取Authentication
     */
    public static Authentication getAuthentication()
    {
        return SecurityContextHolder.getContext().getAuthentication();
    }

    /**
     * 生成BCryptPasswordEncoder密码
     *
     * @param password 密码
     * @return 加密字符串
     */
    public static String encryptPassword(String password)
    {
        return Md5Utils.hash(password);
    }

    /**
     * 判断密码是否相同
     *
     * @param rawPassword 真实密码
     * @param encodedPassword 加密后字符
     * @return 结果
     */
    public static boolean matchesPassword(String rawPassword, String encodedPassword)
    {
        return StringUtils.equals(Md5Utils.hash(rawPassword), encodedPassword);
    }

    /**
     * 是否为管理员
     *
     * @param userId 用户ID
     * @return 结果
     */
    public static boolean isAdmin(Long userId)
    {
        return userId != null && 1L == userId;
    }

    /**
     * 验证用户是否具备某权限
     *
     * @param permission 权限字符串
     * @return 用户是否具备某权限
     */
    public static boolean hasPermi(String permission)
    {
        return hasPermi(getLoginUser().getPermissions(), permission);
    }

    /**
     * 判断是否包含权限
     *
     * @param authorities 权限列表
     * @param permission 权限字符串
     * @return 用户是否具备某权限
     */
    public static boolean hasPermi(Collection<String> authorities, String permission)
    {
        return authorities.stream().filter(StringUtils::hasText)
                .anyMatch(x -> Constants.ALL_PERMISSION.equals(x) || PatternMatchUtils.simpleMatch(x, permission));
    }

    /**
     * 验证用户是否拥有某个角色
     *
     * @param role 角色标识
     * @return 用户是否具备某角色
     */
    public static boolean hasRole(String role)
    {
        List<SysRole> roleList = getLoginUser().getUser().getRoles();
        Collection<String> roles = roleList.stream().map(SysRole::getRoleKey).collect(Collectors.toSet());
        return hasRole(roles, role);
    }


    /**
     * 判断是否包含角色
     *
     * @param roles 角色列表
     * @param role 角色
     * @return 用户是否具备某角色权限
     */
    public static boolean hasRole(Collection<String> roles, String role)
    {
        return roles.stream().filter(StringUtils::hasText)
                .anyMatch(x -> Constants.SUPER_ADMIN.equals(x) || PatternMatchUtils.simpleMatch(x, role));
    }

}