package com.ccqq.springcloud.controller;

import com.ccqq.springcloud.lb.LoadBalancer;
import com.ccqq.springcloud.entities.CommonResult;
import com.ccqq.springcloud.entities.Payment;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

@RestController
public class OrderController
{

//    public static final String PaymentSrv_URL = "http://localhost:8002";
    public static final String PaymentSrv_URL = "http://CLOUD-PAYMENT-SERVICE";

    @Resource
    private RestTemplate restTemplate;

    @Resource
    private DiscoveryClient discoveryClient;

    @Resource
    private LoadBalancer loadBalancer;

    @GetMapping("/consumer/payment/create") //客户端用浏览器是get请求，但是底层实质发送post调用服务端8001
    public CommonResult<Payment> create(Payment payment)
    {
        return restTemplate.postForObject(PaymentSrv_URL + "/payment/create",payment,CommonResult.class);
    }


    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult<Payment> getPayment(@PathVariable Long id)
    {
        return restTemplate.getForObject(PaymentSrv_URL + "/payment/get/"+id, CommonResult.class, id);
    }

    @GetMapping("/consumer/payment/getForEntity/{id}")
    public CommonResult<Payment> getPayment2(@PathVariable Long id){
        ResponseEntity<CommonResult> entity = restTemplate.getForEntity(PaymentSrv_URL+"/payment/get/"+id,CommonResult.class);

        if (entity.getStatusCode().is2xxSuccessful()){
            return entity.getBody();
        }else {
            return new CommonResult<>(444,"启动失败");
        }
    }

//    @GetMapping(value = "/consumer/payment/lb")
//    public String getPaymentLB(){
//        List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
//        if (instances == null || instances.size() <= 0){
//            return null;
//        }
//        ServiceInstance serviceInstance = loadBalancer.instances(instances);
//        URI uri = serviceInstance.getUri();
//
//        return restTemplate.getForObject(uri+"/payment/lb",String.class);
//    }

}