package trade_analysis

import (
	tradeAnalysisModel "eta/eta_api/models/data_manage/trade_analysis"
	"eta/eta_api/utils"
	"fmt"
	"math"
	"strings"
	"time"
)

// CheckAnalysisTableExtraConfig 校验表格配置
func CheckAnalysisTableExtraConfig(extraConfig tradeAnalysisModel.TableExtraConfig) (pass bool, tips string) {
	if extraConfig.CompanyName == "" {
		tips = "请选择期货公司"
		return
	}
	if len(extraConfig.ClassifyList) == 0 {
		tips = "请选择品种"
		return
	}
	var classifyTotal int
	for _, v := range extraConfig.ClassifyList {
		if v.Exchange == "" {
			tips = "请选择交易所"
			return
		}
		if len(v.ClassifyNames) == 0 {
			tips = "请选择品种"
			return
		}
		classifyTotal += len(v.ClassifyNames)
	}
	// 品种选择加个上限吧，过多SQL会很慢
	if classifyTotal > 20 {
		tips = "选择品种不超过20个"
		return
	}
	typeArr := []int{tradeAnalysisModel.ContractQueryTypeTop, tradeAnalysisModel.ContractQueryTypeTop2, tradeAnalysisModel.ContractQueryTypeTop3, tradeAnalysisModel.ContractQueryTypeAll, tradeAnalysisModel.ContractQueryTypeTotal}
	if !utils.InArrayByInt(typeArr, extraConfig.ContractType) {
		tips = "请选择正确的合约"
		return
	}
	if extraConfig.DateType == 1 && extraConfig.FixedDate == "" {
		tips = "请选择固定日期"
		return
	}
	if extraConfig.FixedDate != "" {
		_, e := time.Parse(utils.FormatDate, extraConfig.FixedDate)
		if e != nil {
			tips = "固定日期格式有误"
			return
		}
	}
	if extraConfig.PredictRatio < 0 || extraConfig.PredictRatio > 1 {
		tips = "请输入正确的估计参数"
		return
	}
	pass = true
	return
}

// GetAnalysisTableBaseDate 根据配置获取基准交易日期
func GetAnalysisTableBaseDate(dateType, intervalMove int, fixedDate string) (baseDate time.Time, err error) {
	if dateType == 1 {
		// 固定日期
		t, _ := time.ParseInLocation(utils.FormatDate, fixedDate, time.Local)
		baseDate = t
	} else {
		// 最新交易日
		st := time.Now().AddDate(0, 0, -7) // 默认前移7天, 在开始结束区间内取出指定交易日
		if intervalMove > 0 {
			period := intervalMove * 7
			st = st.AddDate(0, 0, -period)
		}
		tradeDates := utils.GetTradingDays(st, time.Now())
		dateLen := len(tradeDates)
		if dateLen == 0 {
			err = fmt.Errorf("交易日序列异常")
			return
		}
		index := dateLen - 1
		if intervalMove > 0 {
			index -= intervalMove
		}
		if index < 0 || index > dateLen {
			err = fmt.Errorf("交易日序列异常")
			return
		}
		baseDate = tradeDates[index]
	}
	return
}

// CalculateTableRowData 计算表格行数据
func CalculateTableRowData(exchange string, baseDate time.Time, topData []*tradeAnalysisModel.ContractTopRankData, contractsData []*tradeAnalysisModel.ContractCompanyTradeData) (rows []*tradeAnalysisModel.TableRowData, err error) {
	contractTopData := make(map[string]*tradeAnalysisModel.ContractTopRankData)
	for _, v := range topData {
		contractTopData[v.ClassifyType] = v
	}

	rows = make([]*tradeAnalysisModel.TableRowData, 0)
	for _, v := range contractsData {
		// 取出基准日期的数据
		cd := new(tradeAnalysisModel.ContractCompanyTradeDataList)
		for _, d := range v.DataList {
			if d.Date.Equal(baseDate) {
				cd = d
				break
			}
		}
		// 合约基准日期无数据
		if cd.Date.IsZero() {
			continue
		}

		td, ok := contractTopData[v.ClassifyType]
		if !ok {
			// 无前20数据
			continue
		}
		row := new(tradeAnalysisModel.TableRowData)
		row.Exchange = exchange
		row.ClassifyName = td.ClassifyName
		row.ClassifyType = v.ClassifyType
		row.BuyValue = cd.BuyVal
		row.BuyChange = cd.BuyChange
		row.SoldValue = cd.SoldVal
		row.SoldChange = cd.SoldChange
		row.PureBuyVal = cd.PureBuyVal
		row.PureBuyChange = cd.PureBuyChange
		row.TopBuyValue = td.BuyValue
		row.TopSoldValue = td.SoldValue
		row.TopBuyChange = td.BuyChange
		row.TopSoldChange = td.SoldChange

		// 计算值
		row.BuySoldRatio = math.Round(float64(cd.BuyVal)/float64(cd.BuyVal+cd.SoldVal)*100) / 100
		row.BuyTopRatio = math.Round(float64(cd.BuyVal)/float64(td.BuyValue)*100) / 100
		row.SoldTopRatio = math.Round(float64(cd.SoldVal)/float64(td.SoldValue)*100) / 100
		row.TopPureBuy = td.BuyValue - td.SoldValue
		row.TopPureBuyChange = int(math.Abs(float64(td.BuyChange))) + int(math.Abs(float64(td.SoldChange))) // 净多变化=Abs(多单变化)+Abs(空单变化)
		row.TopBuySoldRatio = math.Round(float64(td.BuyValue)/float64(td.BuyValue+td.SoldValue)*100) / 100
		rows = append(rows, row)
	}
	return
}

// GetTableRowsDataByConfig 根据配置获取表格行数据
func GetTableRowsDataByConfig(tableConfig tradeAnalysisModel.TableExtraConfig) (tableRows []*tradeAnalysisModel.TableRowData, err error) {
	// 基准日期
	baseDate, e := GetAnalysisTableBaseDate(tableConfig.DateType, tableConfig.IntervalMove, tableConfig.FixedDate)
	if e != nil {
		err = fmt.Errorf("获取基准日期失败, %v", e)
		return
	}

	// 根据类型取出合约数
	var contractMax int // 需要取出的品种对应的最大合约数
	//classifyMax := make(map[string]int) // 品种对应的合约数
	switch tableConfig.ContractType {
	case tradeAnalysisModel.ContractQueryTypeTop:
		contractMax = 1
	case tradeAnalysisModel.ContractQueryTypeTop2:
		contractMax = 2
	case tradeAnalysisModel.ContractQueryTypeTop3:
		contractMax = 3
	case tradeAnalysisModel.ContractQueryTypeAll, tradeAnalysisModel.ContractQueryTypeTotal:
		contractMax = 999
	}

	var sortRules []string                                                              // 最终排序(合约加总以品种排序，其他以为合约排序)
	classifyContractsData := make(map[string][]*tradeAnalysisModel.ContractTopRankData) // 根据品种分组的合约数据
	classifyContracts := make(map[string][]string)                                      // 品种合约
	for _, v := range tableConfig.ClassifyList {
		for _, classify := range v.ClassifyNames {
			// 获取合约排名及持仓数据
			contractRanks, e := GetTopContractRank(v.Exchange, []string{classify}, baseDate)
			if e != nil {
				err = fmt.Errorf("获取基准日期合约排名失败, %v", e)
				return
			}
			if len(contractRanks) == 0 {
				continue
			}
			flag := fmt.Sprintf("%s-%s", v.Exchange, classify)

			// 取出指定数量的合约
			var contractNum int
			for _, rd := range contractRanks {
				if contractNum >= contractMax {
					continue
				}
				contractNum += 1
				classifyContracts[classify] = append(classifyContracts[classify], rd.ClassifyType)

				if classifyContractsData[flag] == nil {
					classifyContractsData[flag] = make([]*tradeAnalysisModel.ContractTopRankData, 0)
				}
				classifyContractsData[flag] = append(classifyContractsData[flag], rd)

				// 以合约排序
				if tableConfig.ContractType != tradeAnalysisModel.ContractQueryTypeTotal {
					sortRules = append(sortRules, rd.ClassifyType)
				}
			}

			// 以品种排序
			if tableConfig.ContractType == tradeAnalysisModel.ContractQueryTypeTotal {
				sortRules = append(sortRules, classify)
			}
		}
	}

	mussyRows := make([]*tradeAnalysisModel.TableRowData, 0)
	for k, contracts := range classifyContractsData {
		var exchange, classifyName string
		keyArr := strings.Split(k, "-")
		if len(keyArr) != 2 {
			continue
		}
		exchange = keyArr[0]
		classifyName = keyArr[1]
		classifyTypes := classifyContracts[classifyName]
		if len(classifyTypes) == 0 {
			continue
		}

		// 合约加总时，contracts也需要加总，且ClassifyType为品种名
		if tableConfig.ContractType == tradeAnalysisModel.ContractQueryTypeTotal {
			contracts = MergeClassifyTypeTopRankData(contracts)
		}

		contractRowData, e := GetTableTradeData(exchange, classifyName, classifyTypes, tableConfig.CompanyName, tableConfig.PredictRatio, baseDate.AddDate(0, 0, -5), baseDate.AddDate(0, 0, 5), tableConfig.ContractType)
		if e != nil {
			err = fmt.Errorf("获取公司合约多空单数据失败, %v", e)
			return
		}
		if len(contractRowData) == 0 {
			continue
		}

		// 计算行数据
		rows, e := CalculateTableRowData(exchange, baseDate, contracts, contractRowData)
		if e != nil {
			err = fmt.Errorf("计算合约数据失败, %v", e)
			return
		}
		mussyRows = append(mussyRows, rows...)
	}

	// 排序
	tableRows = make([]*tradeAnalysisModel.TableRowData, 0)
	contractRow := make(map[string]*tradeAnalysisModel.TableRowData)
	for _, v := range mussyRows {
		contractRow[v.ClassifyType] = v
	}
	for _, v := range sortRules {
		t := contractRow[v]
		if t != nil {
			tableRows = append(tableRows, t)
		}
	}
	return
}

// MergeClassifyTypeTopRankData 类型为合约加总时-合并当日的TOP数据
func MergeClassifyTypeTopRankData(classifyTypesData []*tradeAnalysisModel.ContractTopRankData) (mergedData []*tradeAnalysisModel.ContractTopRankData) {
	mergedData = make([]*tradeAnalysisModel.ContractTopRankData, 0)

	mergeData := new(tradeAnalysisModel.ContractTopRankData)
	for _, v := range classifyTypesData {
		mergeData.Exchange = v.Exchange
		mergeData.DealValue += v.DealValue
		mergeData.BuyValue += v.BuyValue
		mergeData.BuyChange += v.BuyChange
		mergeData.SoldValue += v.SoldValue
		mergeData.SoldChange += v.SoldChange
		mergeData.PureBuyValue += v.PureBuyValue
		mergeData.PureBuyChange += v.PureBuyChange
		mergeData.ClassifyName = v.ClassifyName
		mergeData.ClassifyType = v.ClassifyName // 合约合并后为品种名
		mergeData.DataTime = v.DataTime
	}
	mergedData = append(mergedData, mergeData)
	return
}