package com.newfiber.api.config;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.stereotype.Component;

/**
 * 处理使用websocket时注入redis失败问题
 */
@Component
public final class SpringUtils implements BeanFactoryPostProcessor {

    private static ConfigurableListableBeanFactory beanFactory;

    @Override
    public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
        SpringUtils.beanFactory = beanFactory;
    }

    public static ConfigurableListableBeanFactory getBeanFactory() {
        return beanFactory;
    }

    /**
     * 获取对象
     *
     * @param name
     * @return Object 一个以所给名字注册的bean的实例
     * @throws BeansException
     */
    @SuppressWarnings("unchecked")
    public static <T> T getBean(String name) throws BeansException {
        if (getBeanFactory() == null) {
            //zhengkai.blog.csdn.net
            System.out.println("本地调试Main模式，没有BeanFactory，忽略错误");
            return null;
        } else {
            T result = (T) getBeanFactory().getBean(name);
            return result;
        }
    }

    /**
     * 获取类型为requiredType的对象
     *
     * @param name
     * @return
     * @throws BeansException
     */
    public static <T> T getBean(Class<T> name) throws BeansException {
        if (getBeanFactory() == null) {
            //zhengkai.blog.csdn.net
            System.out.println("本地调试Main模式，没有BeanFactory，忽略错误");
            return null;
        } else {
            T result = (T) getBeanFactory().getBean(name);
            return result;
        }
    }

    /**
     * 如果BeanFactory包含一个与所给名称匹配的bean定义，则返回true
     *
     * @param name
     * @return boolean
     */
    public static boolean containsBean(String name) {
        return getBeanFactory().containsBean(name);
    }

    /**
     * 判断以给定名字注册的bean定义是一个singleton还是一个prototype。 如果与给定名字相应的bean定义没有被找到，将会抛出一个异常（NoSuchBeanDefinitionException）
     *
     * @param name
     * @return boolean
     * @throws NoSuchBeanDefinitionException
     */
    public static boolean isSingleton(String name) throws NoSuchBeanDefinitionException {
        return getBeanFactory().isSingleton(name);
    }

    /**
     * @param name
     * @return Class 注册对象的类型
     * @throws NoSuchBeanDefinitionException
     */
    public static Class<?> getType(String name) throws NoSuchBeanDefinitionException {
        return getBeanFactory().getType(name);
    }

    /**
     * 如果给定的bean名字在bean定义中有别名，则返回这些别名
     *
     * @param name
     * @return
     * @throws NoSuchBeanDefinitionException
     */
    public static String[] getAliases(String name) throws NoSuchBeanDefinitionException {
        return getBeanFactory().getAliases(name);
    }

}