package com.eactive.ext.kjb.eai;

import com.eactive.ext.kjb.common.KjbProperty;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.apache.hc.client5.http.classic.methods.HttpGet;
import org.apache.hc.client5.http.config.RequestConfig;
import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
import org.apache.hc.client5.http.impl.classic.HttpClients;
import org.apache.hc.core5.http.io.entity.EntityUtils;
import org.apache.hc.core5.net.URIBuilder;
import org.apache.hc.core5.util.Timeout;

import javax.validation.constraints.NotNull;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;

@Slf4j
public class KjbEaiBatchModule {
    private final KjbProperty property;
    private final CloseableHttpClient httpClient;
    private final RequestConfig requestConfig;


    public KjbEaiBatchModule(@NotNull KjbProperty property) {
        if (property == null) {
            throw new IllegalArgumentException("KjbProperty cannot be null");
        }

        this.property = property;
        requestConfig = RequestConfig.custom()
                .setConnectTimeout(Timeout.ofSeconds(property.getEaiBatchConnectionTimeout()))
                .setResponseTimeout(Timeout.ofSeconds(property.getEaiBatchResponseTimeout()))
                .build();

        if (StringUtils.isNotEmpty(property.getEaiBatchUrl())) {
            this.httpClient = HttpClients.createDefault();
        } else {
            this.httpClient = null;
            log.warn("EAI_BATCH_URL 가 설정되지 않음. 실제 EAI 배치 연동 없이 동작함");
        }
    }

    public EaiBatchMessage call(String interfaceId, String filename) throws IOException {
        EaiBatchMessage reqMessage = EaiBatchMessage.createRequest(interfaceId, filename);
        log.debug("EAI 배치 호출: {}", reqMessage);

        if (this.httpClient != null) {
            URI uri = null;
            try {
                uri = new URIBuilder(property.getEaiBatchUrl())
                        .addParameter("eaibatMsg", reqMessage.toString())
                        .build();
            } catch (URISyntaxException e) {
                throw new RuntimeException(e);
            }
            log.debug("EAI Batch call - {}", uri.toASCIIString());

            final HttpGet httpGet = new HttpGet(uri);
            httpGet.setConfig(requestConfig);

            String message = httpClient.execute(httpGet, response -> EntityUtils.toString(response.getEntity(), "EUC-KR"));

            EaiBatchMessage resMessage = EaiBatchMessage.fromResponse(message);
            log.debug("EAI 배치 응답: {}", resMessage);
            return resMessage;
        } else {
            log.info("EAI_BATCH_URL 이 설정되지 않아 실제 호출하지 않음. 요청 메시지: {}", reqMessage);

            // 정상응답 리턴
            EaiBatchMessage resMessage = EaiBatchMessage.fromResponse(String.format("%-20s%-8s%-10s%-1s%s@@", interfaceId, "", "0000000000", "1", "S:" + filename));
            log.debug("EAI 배치 응답(모의): {}", resMessage);
            return resMessage;
        }
    }
}