package com.ruoyi.web.weitools.other;

import org.apache.http.client.HttpClient;
import org.apache.http.impl.client.HttpClientBuilder;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;

/**
 * java代码 实现B系统与A系统企业信息的定时同步．具体要求如下:
 * 需要使用Apache HttpComponents Client实现接口调用;
 * 分页调用接口文档中“获取客户列表”接口接收数据，存储到customer表中;每10分钟同步一次企业信息;
 * A系统企业出现增，删，改，B系统都能够同步;
 * 接口调用需要有重试机制，重试3次后，仍无法正确响应，则回滚;A系统数据有重复，需要去重;
 * 获取Token接口，未过期前不许重复调用;
 * 执行过程中，出现错误需要能够回滚，不能产生脏数据;
 */
//以下是一个使用Java代码实现B系统与A系统企业信息定时同步的示例：
public class EnterpriseSync {
    private static final String A_SYSTEM_URL = "http://example.com/api"; // 用实际的A系统API URL替换
    private static final String B_SYSTEM_URL = "http://example.com/api"; // 替换为实际的B系统API URL
    private static final String TOKEN = "your_token"; // 替换为实际的代验验证

    private static final int MAX_RETRY_COUNT = 3;

    private HttpClient httpClient;
    private int retryCount;

    public static void main(String[] args) {
        EnterpriseSync enterpriseSync = new EnterpriseSync();
        enterpriseSync.startSync();
    }

    public EnterpriseSync() {
        httpClient = HttpClientBuilder.create().build();
        retryCount = 0;
    }

    public void startSync() {
        ScheduledExecutorService scheduler = Executors.newSingleThreadScheduledExecutor();
        scheduler.scheduleAtFixedRate(() -> {
            try {
                syncEnterpriseDataFromA();
            } catch (Exception e) {
                // 在同步期间处理任何例外
                rollback();
                e.printStackTrace();
            }
        }, 0, 10, TimeUnit.MINUTES);
    }

    private void syncEnterpriseDataFromA() throws Exception {
        if (retryCount >= MAX_RETRY_COUNT) {
            rollback();
            return;
        }

        String token = getToken();
        List<Customer> customers = retrieveCustomers(token);

        for (Customer customer : customers) {
            if (!isCustomerAlreadySynced(customer)) {
                saveCustomerToBSystem(customer);
            }
        }

        retryCount = 0; // 如果同步成功，请重置重试计数
    }

    private String getToken() throws Exception {
        // 检查是否已获得令牌，未过期
        // 如果没有，请致电GetToken API
        // 示例实现：
/*        if (tokenNotObtained() || tokenExpired()) {
            HttpGet request = new HttpGet(A_SYSTEM_URL + "/getToken");
            // 如果需要，请设置身份验证标头或参数
            HttpResponse response = httpClient.execute(request);
            // 解析提取令牌的响应
            String token = extractTokenFromResponse(response);
            storeToken(token);
            return token;
        }*/
        return TOKEN; //替换为实际逻辑以检索和存储令牌
    }

    private List<Customer> retrieveCustomers(String token) throws Exception {
        //致电API检索客户
         //示例实现：
/*         HttpGet request = new HttpGet(A_SYSTEM_URL + "/getCustomers");
         request.setHeader("Authorization", "Bearer " + token);
         HttpResponse response = httpClient.execute(request);
         String responseJson = EntityUtils.toString(response.getEntity());
         List<Customer> customers = parseCustomerDataFromJson(responseJson);
         return customers;*/
        return new ArrayList<>(); //替换为实际逻辑以从系统中检索客户数据
    }

    private void saveCustomerToBSystem(Customer customer) throws Exception {
/*        // 致电API将客户保存到B系统
        // 示例实现：
         HttpPost request = new HttpPost(B_SYSTEM_URL + "/saveCustomer");
         // 准备请求有效载荷
         List<NameValuePair> params = new ArrayList<>();
         params.add(new BasicNameValuePair("name", customer.getName()));
         params.add(new BasicNameValuePair("email", customer.getEmail()));
         EntityBuilder entityBuilder = EntityBuilder.create();
         entityBuilder.setParameters(params);
         request.setEntity(entityBuilder.build());
         HttpResponse response = httpClient.execute(request);
         // 如有必要，处理响应*/
    }

    private boolean isCustomerAlreadySynced(Customer customer) {
        // 检查客户是否已经在B系统中同步
        //示例实现：
/*         if (customerExistsInBSystem(customer.getId())) {
              return true;
         }
         return false;*/
        return false; //替换为实际逻辑以检查客户是否存在B系统中
    }

    private void rollback() {
        // 如有必要，执行回滚操作
    }

    // 定义客户类及其属性
    private static class Customer {
        private String id;
        private String name;
        private String email;

        // 构造函数，获取器和固定器
        // ...
    }
}