package com.vincent.rsf.httpaudit.service;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.vincent.rsf.httpaudit.entity.HttpAuditLog;
import com.vincent.rsf.httpaudit.props.HttpAuditProperties;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.opensearch.client.Request;
import org.opensearch.client.ResponseException;
import org.opensearch.client.RestClient;

import java.time.ZoneOffset;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.UUID;

/**
 * 写入 OpenSearch 索引
 */
@Slf4j
@RequiredArgsConstructor
public class OpenSearchHttpAuditLogSink implements HttpAuditLogSink {

    private static final ObjectMapper JSON = new ObjectMapper()
            .disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);

    private final RestClient restClient;
    private final HttpAuditProperties props;

    @Override
    public void write(HttpAuditLog entity) {
        try {
            String index = props.getOpenSearch().getIndexName();
            String docId = entity.getId() != null ? String.valueOf(entity.getId()) : UUID.randomUUID().toString();
            String path = "/" + index + "/_doc/" + docId + "?refresh=false";
            Request request = new Request("PUT", path);
            request.setJsonEntity(JSON.writeValueAsString(toDocument(entity)));
            restClient.performRequest(request);
        } catch (ResponseException ex) {
            int code = ex.getResponse() != null ? ex.getResponse().getStatusLine().getStatusCode() : -1;
            log.error("http-audit OpenSearch 写入失败 uri={} status={}", entity.getUri(), code, ex);
        } catch (Throwable t) {
            log.error("http-audit OpenSearch 写入失败 uri={}", entity.getUri(), t);
        }
    }

    private static Map<String, Object> toDocument(HttpAuditLog e) {
        Map<String, Object> m = new LinkedHashMap<>();
        m.put("id", e.getId());
        m.put("service_name", e.getServiceName());
        m.put("scope_type", e.getScopeType());
        m.put("uri", e.getUri());
        m.put("io_direction", e.getIoDirection());
        m.put("method", e.getMethod());
        m.put("function_desc", e.getFunctionDesc());
        m.put("query_string", e.getQueryString());
        m.put("request_body", e.getRequestBody());
        m.put("response_body", e.getResponseBody());
        m.put("response_truncated", e.getResponseTruncated());
        m.put("http_status", e.getHttpStatus());
        m.put("ok_flag", e.getOkFlag());
        m.put("spend_ms", e.getSpendMs());
        m.put("client_ip", e.getClientIp());
        m.put("error_message", e.getErrorMessage());
        if (e.getCreateTime() != null) {
            m.put("create_time", e.getCreateTime().toInstant().atOffset(ZoneOffset.UTC).toString());
        }
        m.put("deleted", e.getDeleted());
        return m;
    }
}