package com.gs.xiaomi.service;


import com.gs.xiaomi.config.DataAcquisitionConfiguration;
import com.gs.xiaomi.dto.BizDocumentResult;
import com.gs.xiaomi.dto.ZfmWsApiRequest;
import com.gs.xiaomi.util.SoapXmlBuilder;
import com.gs.xiaomi.util.X5StringUtils;
import okhttp3.*;
import org.springframework.stereotype.Service;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.Unmarshaller;
import java.io.StringReader;
import java.util.concurrent.TimeUnit;

@Service
public class SoapApiService {


    private final OkHttpClient client;

    public SoapApiService() {
        this.client = new OkHttpClient.Builder().connectTimeout(3000, TimeUnit.SECONDS) // Set connection timeout
                .readTimeout(90, TimeUnit.SECONDS)    // Set read timeout
                .build();
    }

    public BizDocumentResult callAndParse(String url, ZfmWsApiRequest request) throws Exception {
        String soapXml = SoapXmlBuilder.build(request);
        Response response = sendRequest(url, soapXml);

        if (response.isSuccessful() && response.body() != null) {
            String bodyStr = response.body().string();

            String evCode = extractEvCode(bodyStr);
            if (!"Y".equalsIgnoreCase(evCode)) {
                throw new RuntimeException("SOAP business failed, EV_CODE: " + evCode);
            }

            String decodedXml = decodeXmlEntities(bodyStr);

            String innerXml = extractCdata(decodedXml);
            if (innerXml == null) throw new RuntimeException("No CDATA <document> found in response");

            JAXBContext context = JAXBContext.newInstance(BizDocumentResult.class);
            Unmarshaller unmarshaller = context.createUnmarshaller();
            return (BizDocumentResult) unmarshaller.unmarshal(new StringReader(innerXml));
        } else {
            throw new RuntimeException("SOAP request failed: " + response.code() + " - " + response.message());
        }
    }

    private Response sendRequest(String url, String soapXml) throws Exception {
        MediaType mediaType = MediaType.parse("application/xml");
        RequestBody body = RequestBody.create(mediaType, soapXml);

        String s = DataAcquisitionConfiguration.USER_NAME + ":" + DataAcquisitionConfiguration.PWD;
        String auth = X5StringUtils.encodeBase64(s);

        Request request = new Request.Builder()
                .url(url)
                .method("POST", body)
                .addHeader("Content-Type", "application/xml")
                .addHeader("Authorization", "Basic " + auth)
                .addHeader("Accept", "*/*")
                .addHeader("Connection", "keep-alive")
                .build();

        return client.newCall(request).execute();
    }

    private String extractEvCode(String xml) {
        int start = xml.indexOf("<EV_CODE>");
        int end = xml.indexOf("</EV_CODE>", start);
        if (start == -1 || end == -1) return null;
        return xml.substring(start + 9, end).trim();
    }

    private String decodeXmlEntities(String xml) {
        return xml.replace("&#60;", "<")
                .replace("&#62;", ">")
                .replace("&lt;", "<")
                .replace("&gt;", ">")
                .replace("&amp;", "&");
    }

    private String extractCdata(String xml) {
        int cdataStart = xml.indexOf("<EV_RESULT>");
        int cdataEnd = xml.indexOf("</EV_RESULT>", cdataStart);
        if (cdataStart == -1 || cdataEnd == -1) return null;
        return xml.substring(cdataStart + 11, cdataEnd).trim();
    }
}