package com.ruiguang.config;




import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.apache.shiro.util.ByteSource;


import com.ruiguang.dao.UserDao;
import com.ruiguang.entity.SysPermission;
import com.ruiguang.entity.SysRole;
import com.ruiguang.entity.UserInfo;




import javax.annotation.Resource;


public class MyShiroRealm extends AuthorizingRealm {
    @Resource
    private UserDao userInfoService;
    //z 授權
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
        System.out.println("許可權配置-->MyShiroRealm.doGetAuthorizationInfo()");
        SimpleAuthorizationInfo authorizationInfo = new SimpleAuthorizationInfo();
        UserInfo userInfo  = (UserInfo)principals.getPrimaryPrincipal();
        for(SysRole role:userInfo.getRoleList()){
            authorizationInfo.addRole(role.getRole());
            for(SysPermission p:role.getPermissions()){
                authorizationInfo.addStringPermission(p.getPermission());
            }
        }
        return authorizationInfo;
    }


    //認證 c
    /*主要是用來進行身份認證的，也就是說驗證使用者輸入的賬號和密碼是否正確。*/
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token)
            throws AuthenticationException {
    //1.賬/密碼 2.獲取角色 
        System.out.println("MyShiroRealm.doGetAuthenticationInfo()");
        //獲取使用者的輸入的賬號.
        String username = (String)token.getPrincipal();
        System.out.println("獲取使用者的輸入的賬號---->>>"+username);
        System.out.println("token.getCredentials()---->>>"+token.getCredentials().toString());
        //通過username從資料庫中查詢 User物件，如果找到，沒找到.
        //實際專案中，這裡可以根據實際情況做快取，如果不做，Shiro自己也是有時間間隔機制，2分鐘內不會重複執行該方法
        UserInfo userInfo = userInfoService.findByUsername(username);
        System.out.println("----->>userInfo.getName()="+userInfo.getName());
        System.out.println("----->>userInfo.getCredentialsSalt()="+userInfo.getCredentialsSalt());
        System.out.println("----->>userInfo.getPassword()="+userInfo.getPassword());
        System.out.println("----->>userInfo.getSalt()="+userInfo.getSalt());
        System.out.println("----->>userInfo.getUsername()="+userInfo.getUsername());
        if(userInfo == null){
            return null;
        }
        //此處使用的是user物件，不是username
        SimpleAuthenticationInfo authenticationInfo = new SimpleAuthenticationInfo(
                userInfo, //使用者名稱
                userInfo.getPassword(), //密碼
                ByteSource.Util.bytes(userInfo.getCredentialsSalt()),//salt=username+salt
                getName()  //realm name
        );
        System.out.println("authenticationInfo.getCredentials()--->>"+authenticationInfo.getCredentials().toString());
        System.out.println("authenticationInfo.getPrincipals()--->>"+authenticationInfo.getPrincipals().toString());
        System.out.println("authenticationInfo.getCredentialsSalt()--->>"+authenticationInfo.getCredentialsSalt().getClass().getName());
        System.out.println("authenticationInfo.getCredentialsSalt().toHex()--->>"+authenticationInfo.getCredentialsSalt().toHex());
        return authenticationInfo;
    }


}