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/*
 *      Copyright (c) 2018-2028, Chill Zhuang All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *
 *  Redistributions of source code must retain the above copyright notice,
 *  this list of conditions and the following disclaimer.
 *  Redistributions in binary form must reproduce the above copyright
 *  notice, this list of conditions and the following disclaimer in the
 *  documentation and/or other materials provided with the distribution.
 *  Neither the name of the dreamlu.net developer nor the names of its
 *  contributors may be used to endorse or promote products derived from
 *  this software without specific prior written permission.
 *  Author: Chill 庄骞 (smallchill@163.com)
 */
package com.vci.ubcs.gateway.dynamic;
 
import org.springframework.cloud.gateway.event.RefreshRoutesEvent;
import org.springframework.cloud.gateway.route.RouteDefinition;
import org.springframework.cloud.gateway.route.RouteDefinitionWriter;
import org.springframework.context.ApplicationEventPublisher;
import org.springframework.context.ApplicationEventPublisherAware;
import org.springframework.stereotype.Service;
import reactor.core.publisher.Mono;
 
import java.util.List;
 
/**
 * 动态路由业务类
 *
 * @author Chill
 */
@Service
public class DynamicRouteService implements ApplicationEventPublisherAware {
 
    private final RouteDefinitionWriter routeDefinitionWriter;
 
    private ApplicationEventPublisher publisher;
 
    public DynamicRouteService(RouteDefinitionWriter routeDefinitionWriter) {
        this.routeDefinitionWriter = routeDefinitionWriter;
    }
 
    @Override
    public void setApplicationEventPublisher(ApplicationEventPublisher applicationEventPublisher) {
        this.publisher = applicationEventPublisher;
    }
 
    /**
     * 增加路由
     */
    public String save(RouteDefinition definition) {
        try {
            routeDefinitionWriter.save(Mono.just(definition)).subscribe();
            this.publisher.publishEvent(new RefreshRoutesEvent(this));
            return "save success";
        } catch (Exception e) {
            e.printStackTrace();
            return "save failure";
        }
    }
 
    /**
     * 更新路由
     */
    public String update(RouteDefinition definition) {
        try {
            this.routeDefinitionWriter.delete(Mono.just(definition.getId()));
            this.routeDefinitionWriter.save(Mono.just(definition)).subscribe();
            this.publisher.publishEvent(new RefreshRoutesEvent(this));
            return "update success";
        } catch (Exception e) {
            e.printStackTrace();
            return "update failure";
        }
    }
 
    /**
     * 更新路由
     */
    public String updateList(List<RouteDefinition> routeDefinitions) {
        routeDefinitions.forEach(this::update);
        return "update done";
    }
 
    /**
     * 删除路由
     */
    public String delete(String id) {
        try {
            this.routeDefinitionWriter.delete(Mono.just(id));
            return "delete success";
        } catch (Exception e) {
            e.printStackTrace();
            return "delete failure";
        }
    }
 
 
}