package com.accounting.service;

import com.accounting.dto.K780Response;
import com.fasterxml.jackson.databind.ObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.web.client.RestTemplate;

@Slf4j
@Component
public class K780ApiClient {

    private static final String API_BASE_URL = "https://sapi.k780.com";
    private static final String APP = "finance.gold_price";
    private static final String APP_KEY = "78346";
    private static final String SIGN = "1b502c535927b66d9b888a6d4701bf72";
    private static final String FORMAT = "json";

    private final RestTemplate restTemplate;
    private final ObjectMapper objectMapper;

    public K780ApiClient() {
        this.restTemplate = new RestTemplate();
        this.objectMapper = new ObjectMapper();
    }

    /**
     * 从K780 API获取黄金价格
     * @param goldId 黄金品种ID
     * @return K780Response
     */
    public K780Response fetchGoldPrice(String goldId) {
        try {
            String url = String.format("%s/?app=%s&goldid=%s&appkey=%s&sign=%s&format=%s",
                    API_BASE_URL, APP, goldId, APP_KEY, SIGN, FORMAT);
            
            log.info("Fetching gold price from K780 API: {}", url);
            
            String response = restTemplate.getForObject(url, String.class);
            K780Response k780Response = objectMapper.readValue(response, K780Response.class);
            
            log.info("K780 API response: {}", k780Response);
            
            return k780Response;
        } catch (Exception e) {
            log.error("Failed to fetch gold price from K780 API", e);
            throw new RuntimeException("获取黄金价格失败: " + e.getMessage(), e);
        }
    }
}