package com.dobbinsoft.fw.core.util;



import com.dobbinsoft.fw.core.entiy.inter.IdentityOwner;
import com.dobbinsoft.fw.core.entiy.inter.PermissionOwner;
import com.dobbinsoft.fw.core.exception.ServiceException;

import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.List;

/**
 * Created by rize on 2019/2/27.
 * Edit by rize on 2021/3/16.
 */
public class SessionUtil<U extends IdentityOwner, A extends PermissionOwner> implements ISessionUtil<U, A> {

    private ThreadLocal<U> userLocal = new ThreadLocal<U>();

    private ThreadLocal<A> adminLocal = new ThreadLocal<A>();

    private Class<U> userClass;

    private Class<A> adminClass;

    public SessionUtil(Class<U> userClass, Class<A> adminClass) {
        this.userClass = userClass;
        this.adminClass = adminClass;
    }

    public void setUser(U userDTO) {
        userLocal.set(userDTO);
    }

    public U getUser() {
        return userLocal.get();
    }

    public void setAdmin(A adminDTO) {
        adminLocal.set(adminDTO);
    }

    public A getAdmin() {
        return adminLocal.get();
    }

    public Class<U> getUserClass() {
        return this.userClass;
    }

    public Class<A> getAdminClass() {
        return this.adminClass;
    }

    public boolean hasPerm(String permission) throws ServiceException {
        //拥有的权限
        List<String> perms = getAdmin().getPerms();
        boolean hasPerm = false;
        //目标匹配权限
        String[] permissions = permission.split(":");
        outer : for(String item : perms) {
            //拥有的权限点
            String[] hasPer = item.split(":");
            inner : for (int i = 0; i < permissions.length; i++) {
                if ("*".equals(hasPer[i])) {
                    hasPerm = true;
                    break outer;
                } else if (hasPer[i].equals(permissions[i])){
                    //此层合格
                    if (i == permissions.length - 1) {
                        //若是目标层的最后一层。则表示所有层校验通过
                        hasPerm = true;
                    }
                } else {
                    break inner;
                }
            }
        }
        return hasPerm;
    }

}