package com.smppw.analysis.application.service.info;

import cn.hutool.core.collection.CollectionUtil;
import cn.hutool.core.collection.ListUtil;
import cn.hutool.core.map.MapUtil;
import cn.hutool.core.util.StrUtil;
import com.smppw.analysis.application.dto.info.*;
import com.smppw.analysis.domain.dto.info.HeadInfoParams;
import com.smppw.analysis.domain.dto.info.HeadInfoVO;
import com.smppw.analysis.domain.dto.info.PrivatelyFundHeadInfoVO;
import com.smppw.analysis.domain.dto.info.PubliclyFundHeadInfoVO;
import com.smppw.analysis.domain.dto.performance.IndicatorParams;
import com.smppw.analysis.domain.manager.info.HeadInfoConstants;
import com.smppw.analysis.domain.manager.info.HeadInfoFactory;
import com.smppw.analysis.domain.manager.performance.Performance;
import com.smppw.analysis.domain.manager.performance.PerformanceConstants;
import com.smppw.analysis.domain.manager.performance.PerformanceFactory;
import com.smppw.analysis.domain.service.BaseInfoService;
import com.smppw.analysis.domain.service.NavService;
import com.smppw.analysis.infrastructure.exception.APIException;
import com.smppw.common.pojo.IStrategy;
import com.smppw.common.pojo.ValueLabelVO;
import com.smppw.common.pojo.dto.DateValue;
import com.smppw.common.pojo.dto.calc.IndicatorCalcTimeRangeDto;
import com.smppw.common.pojo.enums.*;
import com.smppw.constants.SecType;
import com.smppw.core.IndicatorService;
import com.smppw.utils.StrategyHandleUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Service;

import java.util.*;
import java.util.stream.Collectors;

@Service
public class GlobalService {
    private final NavService navService;
    private final BaseInfoService baseInfoService;
    private final HeadInfoFactory headInfoFactory;
    private final PerformanceFactory performanceFactory;

    public GlobalService(NavService navService,
                         BaseInfoService baseInfoService,
                         HeadInfoFactory headInfoFactory,
                         PerformanceFactory performanceFactory) {
        this.navService = navService;
        this.baseInfoService = baseInfoService;
        this.headInfoFactory = headInfoFactory;
        this.performanceFactory = performanceFactory;
    }

    public HeadInfoVO headInfo(HeadInfoReq req) {
        String secType = this.baseInfoService.getSecType(req.getSecId());
        String type = HeadInfoConstants.SEC_TYPE_HEAD_MAP.get(secType);
        HeadInfoParams params = req.convert();
        params.setSecType(secType);
        return this.headInfoFactory.getInstance(type).get(params);
    }

    public CommonInfoVO commonInfo(CommonInfoReq params) {
        String secType = this.baseInfoService.getSecType(params.getSecId());
        CommonInfoVO res = new CommonInfoVO();
        String secId = params.getSecId();
        List<Frequency> result = CollectionUtil.newArrayList();
        String type = HeadInfoConstants.SEC_TYPE_HEAD_MAP.get(secType);
        HeadInfoVO fundHeadInfo = this.headInfoFactory.getInstance(type).get(new HeadInfoParams(secId, type));
        if (fundHeadInfo == null) {
            throw new APIException("");
        }
        String raiseType = fundHeadInfo.getRaiseType();
        result.add(this.baseInfoService.getNavFrequency(secId));
        // 将频率转换一道 取最小频率
        List<Frequency> frequencies = this.toFrequencyList(result);
        if (Objects.equals("2", raiseType)) {
            frequencies.removeIf(p -> p.getId() == Frequency.Default.getId());
        }
        List<ValueLabelVO> frequencyValueLabel = this.trans2ValueLabel(frequencies);
        res.setFrequency(frequencyValueLabel);
        // 净值类型
        List<ValueLabelVO> navType = Arrays.stream(NavType.values())
                .filter(p -> !NavType.All.equals(p) && !NavType.UnitAndCumulativeNav.equals(p))
                .map(p -> new ValueLabelVO(p.name(), p.getDesc())).collect(Collectors.toList());
        res.setNavType(navType);
        handleTimeRange(res, secId);
        // 获取常用指数
        List<ValueLabelVO> benchmarkList = baseInfoService.getCommonIndexList();
        handleBenchmark(res, secType, benchmarkList, fundHeadInfo);
        return res;
    }

    @SuppressWarnings("unchecked")
    public HeadIndicatorVO headIndicator(HeadIndicatorReq req) {
        IndicatorParams params = req.convert();
        Performance<IndicatorParams, Map<String, Object>> instance = this.performanceFactory.getInstance(PerformanceConstants.INDICATOR);
        Map<String, Object> dataset = instance.execute(params);
        Map<String, Object> indicatorMap = MapUtil.get(dataset, req.getSecId(), Map.class);
        HeadIndicatorVO vo = new HeadIndicatorVO();
        vo.setAnnualReturn(MapUtil.getStr(indicatorMap, Indicator.AnnualReturn.name()));
        vo.setAnnualStdDev(MapUtil.getStr(indicatorMap, Indicator.AnnualStdDev.name()));
        vo.setMaxDrawdown(MapUtil.getStr(indicatorMap, Indicator.MaxDrawdown.name()));
        vo.setSharpeRatio(MapUtil.getStr(indicatorMap, Indicator.SharpeRatio.name()));
        return vo;
    }

    private List<Frequency> toFrequencyList(List<Frequency> value) {
        if (CollectionUtil.isEmpty(value))
            return CollectionUtil.newArrayList(Frequency.Default);
        if (value.contains(Frequency.Daily))
            return CollectionUtil.newArrayList(Frequency.Default, Frequency.Daily, Frequency.Weekly, Frequency.Monthly);
        if (value.contains(Frequency.Weekly))
            return CollectionUtil.newArrayList(Frequency.Default, Frequency.Weekly, Frequency.Monthly);
        if (value.contains(Frequency.Monthly))
            return CollectionUtil.newArrayList(Frequency.Default, Frequency.Monthly);
        return CollectionUtil.newArrayList(Frequency.Default);
    }

    private List<ValueLabelVO> trans2ValueLabel(List<Frequency> frequencies) {
        List<ValueLabelVO> res = CollectionUtil.newArrayList();
        for (Frequency frequency : frequencies) {
            res.add(new ValueLabelVO(frequency.name(), frequency.getDesc()));
        }
        return res;
    }

    private void handleTimeRange(CommonInfoVO vo, String secId) {
        List<String> refIds = ListUtil.toLinkedList(secId);
        String endDate = null;
        String startDate = null;
        Frequency navFrequency = this.baseInfoService.getNavFrequency(secId);
        Map<String, List<DateValue>> allNavMap = this.navService.getSecIdDateValueNavListMapByDb(refIds, null, null, Visibility.Both, NavType.CumulativeNav);
        List<IndicatorCalcTimeRangeDto> secTimeRanges = IndicatorService.getInstance().getSecTimeRange(secId, navFrequency, allNavMap);
        Map<String, String> timeRangeMap = MapUtil.newHashMap();
        for (IndicatorCalcTimeRangeDto timeRange : secTimeRanges) {
            if (StringUtils.isEmpty(endDate)) {
                endDate = timeRange.getEndDate();
            }
            if (TimeRange.FromSetup == timeRange.getTimeRange()) {
                startDate = timeRange.getStartDate();
            }
            timeRangeMap.put(timeRange.getTimeRange().name(), timeRange.getStartDate());
        }
        vo.setTimeRangeMap(timeRangeMap);
        vo.setEndDate(endDate);
        vo.setStartDate(startDate);
    }

    private void handleBenchmark(CommonInfoVO res, String fundType, List<ValueLabelVO> benchmarkList, HeadInfoVO headInfoVO) {
        String benchmarkId = null;
        ValueLabelVO valueLabelVO;
        // 基金有对应策略的指数
        if (fundType.equals(SecType.PRIVATELY_OFFERED_FUND) || fundType.equals(SecType.PRIVATE_FUND)) {
            PrivatelyFundHeadInfoVO fundHeadInfo = (PrivatelyFundHeadInfoVO) headInfoVO;
            benchmarkId = fundHeadInfo.getPrimaryBenchmarkId();
            valueLabelVO = new ValueLabelVO(benchmarkId, fundHeadInfo.getPrimaryBenchmarkName());
        } else if (fundType.equals(SecType.PUBLICLY_OFFERED_FUNDS)) {
            // 公募需要特殊处理
            PubliclyFundHeadInfoVO fundHeadInfo = (PubliclyFundHeadInfoVO) headInfoVO;
            Integer subStrategyId = fundHeadInfo.getSubstrategyId();
            IStrategy iStrategy = StrategyHandleUtils.getStrategyById(subStrategyId);
            benchmarkId = iStrategy.getBenchmark();
            if (StrUtil.isBlank(benchmarkId)) {
                benchmarkId = fundHeadInfo.getPrimaryBenchmarkId();
                valueLabelVO = new ValueLabelVO(benchmarkId, fundHeadInfo.getPrimaryBenchmarkName());
            } else {
                Map<String, String> querySecName = this.baseInfoService.querySecName(ListUtil.of(benchmarkId));
                String indexName = querySecName.get(benchmarkId);
                valueLabelVO = new ValueLabelVO(benchmarkId, indexName);
            }
        } else {
            valueLabelVO = new ValueLabelVO();
        }
        if (CollectionUtil.isNotEmpty(benchmarkList)) {
            // 如果常用指数里面没有基准，则把基准放在常用指数的第一位
            Optional<ValueLabelVO> contains = benchmarkList.stream().filter(p -> p.getValue().equals(valueLabelVO.getValue())).findFirst();
            if (contains.isEmpty()) {
                benchmarkList.add(0, valueLabelVO);
            }
        } else {
            benchmarkList.add(valueLabelVO);
        }
        res.setBenchmarkId(benchmarkId);
        res.setUsefulBenchmark(benchmarkList);
    }
}