package com.ycl.api.HK;

import com.ycl.platform.domain.result.OSDResult;
import constant.ApiConstants;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpResponse;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import java.io.IOException;
import java.io.StringReader;
import java.net.URI;
import java.net.URISyntaxException;
import java.time.OffsetDateTime;
import java.util.Date;

@Slf4j
public class HKApi {
    public static OSDResult getOsdByIP(String ip, String userName, String password) {
        OSDResult osdResult = new OSDResult();
        CloseableHttpClient httpClient = HttpClients.createDefault();
        String hostUrl = "http://" + ip;
        try {
            //获取OSD
            HttpResponse OSDResponse = getHttpResponse(httpClient, hostUrl + ApiConstants.HK_OSD_PATH, userName, password);
            String OSDString = EntityUtils.toString(OSDResponse.getEntity(), "utf-8");
            //解析xml
            parseXMl(OSDString, "TextOverlay", "displayText", osdResult, null);
            //获取Time
            HttpResponse TimeResponse = getHttpResponse(httpClient, hostUrl + ApiConstants.HK_OSD_TIME, userName, password);
            Date date = new Date();
            String timeString = EntityUtils.toString(TimeResponse.getEntity(), "utf-8");
            //解析xml
            parseXMl(timeString, "Time", "localTime", osdResult, date);
        } catch (Exception e) {
            return null;
        }
        return osdResult;
    }

    private static void parseXMl(String OSDString, String tagName1, String tagName2, OSDResult osdResult, Date date) throws ParserConfigurationException, SAXException, IOException {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        DocumentBuilder builder = factory.newDocumentBuilder();
        Document document = builder.parse(new InputSource(new StringReader(OSDString)));
        document.getDocumentElement().normalize();
        NodeList nodeList = document.getElementsByTagName(tagName1);
        for (int i = 0; i < nodeList.getLength(); i++) {
            Node node = nodeList.item(i);
            if (node.getNodeType() == Node.ELEMENT_NODE && "TextOverlay".equals(tagName1)) {
                Element element = (Element) node;
                String textContent = element.getElementsByTagName(tagName2).item(0).getTextContent();
//                log.info("TEXT : " + textContent);
                if (i == 0) {
                    osdResult.setOSD1(textContent);
                } else if (i == 1) {
                    osdResult.setOSD2(textContent);
                } else if (i == 2) {
                    osdResult.setOSD3(textContent);
                } else if (i == 3) {
                    osdResult.setName(textContent);
                } else if (i == 4) {
                    osdResult.setOSD4(textContent);
                }
            } else if (node.getNodeType() == Node.ELEMENT_NODE && "Time".equals(tagName1)) {
                Element element = (Element) node;
                String textContent = element.getElementsByTagName(tagName2).item(0).getTextContent();
//                log.info("TEXT : " + textContent);
                osdResult.setCheckTime(date);
                OffsetDateTime dateTime = OffsetDateTime.parse(textContent);
                // 将OffsetDateTime转换为Date对象
                osdResult.setOsdTime(Date.from(dateTime.toInstant()));
            }
        }
    }

    private static HttpResponse getHttpResponse(CloseableHttpClient httpClient, String url, String userName, String password) throws URISyntaxException, IOException {
        CredentialsProvider credsProvider = new BasicCredentialsProvider();
        credsProvider.setCredentials(
                new AuthScope(new URI(url).getHost(), new URI(url).getPort()),
                new UsernamePasswordCredentials(userName, password));

        HttpGet httpGet = new HttpGet(url);

        // 设置请求配置
        RequestConfig requestConfig = RequestConfig.custom()
                .setConnectTimeout(1000)
                .setSocketTimeout(1000)
                .build();
        httpGet.setConfig(requestConfig);

        // 绑定凭证提供者到HttpClient
        httpClient = HttpClientBuilder.create()
                .setDefaultCredentialsProvider(credsProvider)
                .build();
        try {
            return httpClient.execute(httpGet);
        } catch (Exception e){
            throw new RuntimeException("海康OSD执行失败");
        }
    }
}