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import React from 'react';
import CheckPermissions from './CheckPermissions';
/**
* 默认不能访问任何页面
* default is "NULL"
*/
const Exception403 = () => 403;
export const isComponentClass = (component) => {
if (!component) return false;
const proto = Object.getPrototypeOf(component);
if (proto === React.Component || proto === Function.prototype) return true;
return isComponentClass(proto);
}; // Determine whether the incoming component has been instantiated
// AuthorizedRoute is already instantiated
// Authorized render is already instantiated, children is no instantiated
// Secured is not instantiated
const checkIsInstantiation = (target) => {
if (isComponentClass(target)) {
const Target = target;
return (props) => <Target {...props} />;
}
if (React.isValidElement(target)) {
return (props) => React.cloneElement(target, props);
}
return () => target;
};
/**
* 用于判断是否拥有权限访问此 view 权限
* authority 支持传入 string, () => boolean | Promise
* e.g. 'user' 只有 user 用户能访问
* e.g. 'user,admin' user 和 admin 都能访问
* e.g. ()=>boolean 返回true能访问,返回false不能访问
* e.g. Promise then 能访问 catch不能访问
* e.g. authority support incoming string, () => boolean | Promise
* e.g. 'user' only user user can access
* e.g. 'user, admin' user and admin can access
* e.g. () => boolean true to be able to visit, return false can not be accessed
* e.g. Promise then can not access the visit to catch
* @param {string | function | Promise} authority
* @param {ReactNode} error 非必需参数
*/
const authorize = (authority, error) => {
/**
* conversion into a class
* 防止传入字符串时找不到staticContext造成报错
* String parameters can cause staticContext not found error
*/
let classError = false;
if (error) {
classError = () => error;
}
if (!authority) {
throw new Error('authority is required');
}
return function decideAuthority(target) {
const component = CheckPermissions(authority, target, classError || Exception403);
return checkIsInstantiation(component);
};
};
export default authorize;