package cn.ztuo.bitrade.component;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.JsonNode;
import com.mashape.unirest.http.Unirest;
import com.mashape.unirest.http.exceptions.UnirestException;

import cn.ztuo.bitrade.entity.Coin;
import cn.ztuo.bitrade.entity.CoinThumb;
import cn.ztuo.bitrade.processor.CoinProcessor;
import cn.ztuo.bitrade.processor.CoinProcessorFactory;
import cn.ztuo.bitrade.service.CoinService;
import cn.ztuo.bitrade.service.ExchangeCoinService;
import lombok.Getter;
import lombok.Setter;
import lombok.ToString;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

import java.math.BigDecimal;
import java.math.RoundingMode;

/**
 * 币种汇率管理
 */
@Component
@Slf4j
@ToString
public class CoinExchangeRate {
    @Getter
    @Setter
    private BigDecimal usdCnyRate = new BigDecimal("6.30");
    @Getter
    @Setter
    private BigDecimal usdJpyRate = new BigDecimal("110.02");
    @Getter
    @Setter
    private BigDecimal usdHkdRate = new BigDecimal("7.8491");
    @Getter
    @Setter
    private BigDecimal sgdCnyRate = new BigDecimal("4.77");
    @Setter
    private CoinProcessorFactory coinProcessorFactory;

    @Autowired
    private CoinService coinService;
    @Autowired
    private ExchangeCoinService exCoinService;


    public BigDecimal getUsdRate(String symbol) {
        log.info("CoinExchangeRate getUsdRate unit = " + symbol);
        if ("USDT".equalsIgnoreCase(symbol)) {
            log.info("CoinExchangeRate getUsdRate unit = USDT  ,result = ONE");
            return BigDecimal.ONE;
        } else if ("CNY".equalsIgnoreCase(symbol)) {
            log.info("CoinExchangeRate getUsdRate unit = CNY  ,result : 1 divide {}", this.usdCnyRate);
            BigDecimal bigDecimal = BigDecimal.ONE.divide(usdCnyRate, 4,BigDecimal.ROUND_DOWN).setScale(4, BigDecimal.ROUND_DOWN);
            return bigDecimal;
        }else if ("BITCNY".equalsIgnoreCase(symbol)) {
            BigDecimal bigDecimal = BigDecimal.ONE.divide(usdCnyRate, 4,BigDecimal.ROUND_DOWN).setScale(4, BigDecimal.ROUND_DOWN);
            return bigDecimal;
        } else if ("ET".equalsIgnoreCase(symbol)) {
            BigDecimal bigDecimal = BigDecimal.ONE.divide(usdCnyRate, 4,BigDecimal.ROUND_DOWN).setScale(4, BigDecimal.ROUND_DOWN);
            return bigDecimal;
        } else if ("JPY".equalsIgnoreCase(symbol)) {
            BigDecimal bigDecimal = BigDecimal.ONE.divide(usdJpyRate, 4,BigDecimal.ROUND_DOWN).setScale(4, BigDecimal.ROUND_DOWN);
            return bigDecimal;
        }else if ("HKD".equalsIgnoreCase(symbol)) {
            BigDecimal bigDecimal = BigDecimal.ONE.divide(usdHkdRate, 4,BigDecimal.ROUND_DOWN).setScale(4, BigDecimal.ROUND_DOWN);
            return bigDecimal;
        }
        String usdtSymbol = symbol.toUpperCase() + "/USDT";
        String btcSymbol = symbol.toUpperCase() + "/BTC";
        String ethSymbol = symbol.toUpperCase() + "/ETH";

        if (coinProcessorFactory != null) {
            if (exCoinService.isSupported(usdtSymbol)) {
                log.info("Support exchange coin = {}", usdtSymbol);
                CoinProcessor processor = coinProcessorFactory.getProcessor(usdtSymbol);
                CoinThumb thumb = processor.getThumb();
                return thumb.getUsdRate();
            } else if (exCoinService.isSupported(btcSymbol)) {
                log.info("Support exchange coin = {}/BTC", btcSymbol);
                CoinProcessor processor = coinProcessorFactory.getProcessor(btcSymbol);
                CoinThumb thumb = processor.getThumb();
                return thumb.getUsdRate();
            } else if (exCoinService.isSupported(ethSymbol)) {
                log.info("Support exchange coin = {}/ETH", ethSymbol);
                CoinProcessor processor = coinProcessorFactory.getProcessor(ethSymbol);
                CoinThumb thumb = processor.getThumb();
                return thumb.getUsdRate();
            } else {
                return getDefaultUsdRate(symbol);
            }
        } else {
            return getDefaultUsdRate(symbol);
        }
    }

    /**
     * 获取币种设置里的默认价格
     *
     * @param symbol
     * @return
     */
    public BigDecimal getDefaultUsdRate(String symbol) {
        Coin coin = coinService.findByUnit(symbol);
        if (coin != null) {
            return new BigDecimal(coin.getUsdRate());
        } else {
            return BigDecimal.ZERO;
        }
    }

    public BigDecimal getCnyRate(String symbol) {
        if ("CNY".equalsIgnoreCase(symbol)) {
            return BigDecimal.ONE;
        } else if("ET".equalsIgnoreCase(symbol)){
            return BigDecimal.ONE;
        }
        return getUsdRate(symbol).multiply(usdCnyRate).setScale(2, RoundingMode.DOWN);
    }

    public BigDecimal getJpyRate(String symbol) {
        if ("JPY".equalsIgnoreCase(symbol)) {
            return BigDecimal.ONE;
        }
        return getUsdRate(symbol).multiply(usdJpyRate).setScale(2, RoundingMode.DOWN);
    }

    public BigDecimal getHkdRate(String symbol) {
        if ("HKD".equalsIgnoreCase(symbol)) {
            return BigDecimal.ONE;
        }
        return getUsdRate(symbol).multiply(usdHkdRate).setScale(2, RoundingMode.DOWN);
    }

    /**
     * 每小时同步一次价格
     *
     * @throws UnirestException
     */
    @Scheduled(cron = "0 0 * * * *")
    public void syncPrice() throws UnirestException {
        String url = "https://forex.1forge.com/1.0.2/quotes";
        //如有报错 请自行官网申请获取汇率 或者默认写死
        HttpResponse<JsonNode> resp = Unirest.get(url)
                .queryString("pairs", "USDCNH,USDJPY,USDHKD,SGDCNH")
                .queryString("api_key", "y4lmqQRykolDeO3VkzjYp2XZfgCdo8Tv")
                .asJson();
        log.info("forex result:{}", resp.getBody());
        JSONArray result = JSON.parseArray(resp.getBody().toString());
        result.forEach(json -> {
            JSONObject obj = (JSONObject) json;
            if ("USDCNH".equals(obj.getString("symbol"))) {
                setUsdCnyRate(new BigDecimal(obj.getDouble("price")).setScale(2, RoundingMode.DOWN));
                log.info(obj.toString());
            } else if ("USDJPY".equals(obj.getString("symbol"))) {
                setUsdJpyRate(new BigDecimal(obj.getDouble("price")).setScale(2, RoundingMode.DOWN));
                log.info(obj.toString());
            } else if ("USDHKD".equals(obj.getString("symbol"))) {
                setUsdHkdRate(new BigDecimal(obj.getDouble("price")).setScale(2, RoundingMode.DOWN));
                log.info(obj.toString());
            } else if("SGDCNH".equals(obj.getString("symbol"))){
                setSgdCnyRate(new BigDecimal(obj.getDouble("price")).setScale(2,RoundingMode.DOWN));
                log.info(obj.toString());
            }
        });
    }
}