package selfMarketSpot

import (
	"encoding/json"
	"fmt"
	"github.com/shopspring/decimal"
	"math/rand"
	"time"
	"wss-pool/cmd/common"
	"wss-pool/cmd/websocketservice"
	red "wss-pool/internal/redis"
	"wss-pool/logging/applogger"
	"wss-pool/pkg/model/market"
	"wss-pool/pkg/model/stock"
)

const (
	maxRand        float64 = 2000 //成交笔数 随机最大值
	minRand        float64 = 0.1
	minLeastRand   float64 = 1
	DepthNum       int     = 80  //深度数据只要
	DepthMaxNum    int     = 300 //深度数据只要
	defaultMaxStep float64 = 0.003
	defaultMinStep float64 = 0.000001
)

var (
	TotalAmount decimal.Decimal // 当前总成交量
	TotalCount  decimal.Decimal //总成交笔数
	oldAsks     int64
	oldBids     int64
)

func ClearTotal() {
	TotalAmount = decimal.NewFromFloat(0)
	TotalCount = decimal.NewFromFloat(0)
}

func CreateDepth(old, closePrice decimal.Decimal) {
	chStep0 := fmt.Sprintf("market-%s-depth-step0", SelfSymbol)
	rand.New(rand.NewSource(time.Now().UnixNano()))
	tick := market.CtDepthTick{
		Mrid: rand.Int63n(99999999999) + int64(99999),
		Id:   common.TimeToNow(),
		Ts:   common.TimeToNow(),
	}
	//卖单，买单
	tick.Asks, tick.Bids = DepthStep(closePrice, old)
	//applogger.Info("asks  ", tick.Asks, tick.Bids)
	//成交记录
	CreateTradeDetail(tick)
	//升序
	tick.Asks = insertionSort(tick.Asks)
	//降序
	tick.Bids = quickSort(tick.Bids)
	res := market.SubscribeCtDepthResponse{
		Channel:   chStep0,
		Timestamp: common.TimeToNow(),
		Tick:      &tick,
	}
	jsonMessage, _ := json.Marshal(websocketservice.Message{
		ServersId: res.Channel,
		Content:   res,
		Symbol:    res.Channel})
	OneDayContractDepth(res)
	red.RedisClient.Publish(res.Channel, string(jsonMessage))

}

// 卖单 买单
func DepthStep(closePrice, old decimal.Decimal) ([][]decimal.Decimal, [][]decimal.Decimal) {
	data := make([][]decimal.Decimal, 0)
	datas := make([][]decimal.Decimal, 0)
	if old.Equal(closePrice) {
		return data, datas
	}
	amaxRand := float64(0)
	bmaxRand := float64(0)
	//跌
	if old.GreaterThan(closePrice) {
		diff := old.Sub(closePrice)
		amaxRand, _ = diff.Div(old).Mul(decimal.NewFromFloat(maxRand)).Round(2).Float64()
		bmaxRand = amaxRand / float64(3)
	} else {
		diff := closePrice.Sub(old)
		bmaxRand, _ = diff.Div(old).Mul(decimal.NewFromFloat(maxRand)).Round(2).Float64()
		amaxRand = bmaxRand / float64(3)
	}
	asksMap := make(map[string]int)
	bidsMap := make(map[string]int)
	minRands := minRand
	if closePrice.LessThan(decimal.NewFromInt(int64(1))) {
		minRands = minLeastRand
	}
	for i := 0; i < DepthNum; i++ {
		item := make([]decimal.Decimal, 0)
		price := calculateMaxMinContractPrice(closePrice, false)
		if _, ok := asksMap[price.String()]; ok {
			continue
		}
		item = append(item, price)
		item = append(item, decimal.NewFromFloat(common.RandFloats(minRands, amaxRand)))
		data = append(data, item)
		asksMap[price.String()] = 1
		if len(data) >= 20 {
			break
		}
	}
	for i := 0; i < DepthNum; i++ {
		item := make([]decimal.Decimal, 0)
		price := calculateMaxMinContractPrice(closePrice, true)
		if _, ok := bidsMap[price.String()]; ok {
			continue
		}
		item = append(item, price)
		item = append(item, decimal.NewFromFloat(common.RandFloats(minRands, bmaxRand)))
		datas = append(datas, item)
		bidsMap[price.String()] = 1
		if len(datas) >= 20 {
			break
		}
	}
	return data, datas
}

// 生成一天聚合深度
func OneDayContractDepth(item market.SubscribeCtDepthResponse) {
	result := market.SubscribeCtDepthTempResponse{}
	result.Tick = &market.CtDepthTick{}
	title := fmt.Sprintf("market-%s-depth-step0", SelfSymbol)
	rand.New(rand.NewSource(time.Now().UnixNano()))
	result.Tick.Mrid = rand.Int63n(99999999999) + int64(99999)
	result.Tick.Id = common.TimeToNow() * 1000
	result.Tick.Ts = common.TimeToNow() * 1000
	result.Tick.Asks = insertionSort(item.Tick.Asks)
	result.Tick.Bids = quickSort(item.Tick.Bids)
	result.Channel = fmt.Sprintf("market.%s.depth.step0", SelfSymbol)
	resultJsons, _ := json.Marshal(result)
	red.Set_Cache_Value(title, string(resultJsons))
}

// TODO: 生成 聚合行情/市场概要
func OneDayDetailMerged(param market.SubscribeCandlestickResponse) {
	result := market.TickerWebsocketResponse{}
	tick := &market.TickR{}
	tick.Count = int(param.Tick.Count)
	tick.High = param.Tick.High
	tick.Open = param.Tick.Open
	tick.Vol = param.Tick.Vol
	tick.Close = param.Tick.Close
	tick.Low = param.Tick.Low
	tick.Amount = param.Tick.Amount
	result.Tick = tick
	result.Timestamp = common.TimeToNow()
	result.Channel = fmt.Sprintf("market.%s.ticker", SelfSymbol)
	jsonMessage, _ := json.Marshal(websocketservice.Message{
		ServersId: result.Channel,
		Content:   result,
		Symbol:    result.Channel})
	red.RedisClient.Publish(result.Channel, string(jsonMessage))
	res := market.TickerWebsocketResponses{}
	title := fmt.Sprintf("market-%s-detail-merged", SelfSymbol)
	res.Tick = tick
	res.Channel = title
	jsonMessages, _ := json.Marshal(res)
	if err := red.Set_Cache_Value(title, string(jsonMessages)); err != nil {
		applogger.Error(title, err)
	}
	//applogger.Info("subscribeTicker data,ServersId:%v,Sender:%v,Content:%v-%v", result.Channel, result.Tick, result.Data)
	//applogger.Info("OneDayContractDepth ", string(resultJson))
}

// 生成详情
func CreateTradeDetail(tick market.CtDepthTick) {
	res := market.SubscribeTradeResponse{}
	res.Tick = &market.TickTrade{}
	res.Tick.Data = make([]market.Trade, 0)
	TotalCount = decimal.NewFromInt(0)
	//最近交易接口
	tradeDetailAPI := make([]stock.MarketTrade, 0)
	for key, v := range tick.Asks {
		if key >= 1 {
			break
		}
		item := market.Trade{
			Amount:    v[1],
			Timestamp: common.TimeToNow() * 1000,
			TradeId:   common.TimeToNow() * 1000,
			Price:     v[0],
			Direction: "sell",
		}
		res.Tick.Data = append(res.Tick.Data, item)
		apiItem := stock.MarketTrade{
			ID:          common.TimeToNow() * 1000,
			OrderNumber: item.Amount.String(),
			DealPrice:   item.Price.String(),
			OrderTime:   common.TimeToNow() * 1000,
			TradeType:   2,
		}
		tradeDetailAPI = append(tradeDetailAPI, apiItem)
	}
	res.Channel = fmt.Sprintf("market.%s.trade.detail", SelfSymbol)
	res.Timestamp = common.TimeToNow() * 1000
	if len(res.Tick.Data) > 0 {
		jsonMessage, _ := json.Marshal(websocketservice.Message{
			ServersId: res.Channel,
			Content:   res,
			Symbol:    res.Channel})
		//applogger.Info("CreateTradeDetail  sell:", string(jsonMessage))
		red.RedisClient.Publish(res.Channel, string(jsonMessage))
	}

	res = market.SubscribeTradeResponse{}
	res.Tick = &market.TickTrade{}
	res.Tick.Data = make([]market.Trade, 0)
	res.Channel = fmt.Sprintf("market.%s.trade.detail", SelfSymbol)
	for key, v := range tick.Bids {
		if key >= 1 {
			break
		}
		item := market.Trade{
			Amount:    v[1], //CHEN
			Timestamp: common.TimeToNow() * 1000,
			TradeId:   common.TimeToNow() * 1000,
			Price:     v[0],
			Direction: "buy",
		}
		//总成交量
		TotalAmount = TotalAmount.Add(item.Amount)
		res.Tick.Data = append(res.Tick.Data, item)
		apiItem := stock.MarketTrade{
			ID:          common.TimeToNow() * 1000,
			OrderNumber: item.Amount.String(),
			DealPrice:   item.Price.String(),
			OrderTime:   common.TimeToNow() * 1000,
			TradeType:   1,
		}
		tradeDetailAPI = append(tradeDetailAPI, apiItem)
	}
	res.Timestamp = common.TimeToNow() * 1000
	//总成交笔数
	TotalCount = TotalCount.Add(decimal.NewFromInt(int64(len(tick.Bids))))
	if len(res.Tick.Data) > 0 {
		//fmt.Println(res.Tick.Data)
		jsonMessage, _ := json.Marshal(websocketservice.Message{
			ServersId: res.Channel,
			Content:   res,
			Symbol:    res.Channel})
		//applogger.Info("CreateTradeDetail  buy:", string(jsonMessage))
		go func(channel string, jsonMessage []byte) {
			time.Sleep(1 * time.Second)
			red.RedisClient.Publish(channel, string(jsonMessage))
		}(res.Channel, jsonMessage)
	}
	//缓存
	title := fmt.Sprintf("market-%s-trade-detail", SelfSymbol)
	var resultJson []byte
	resultJson, _ = json.Marshal(tradeDetailAPI)
	if err := red.Set_Cache_Value(title, string(resultJson)); err != nil {
		applogger.Error(title, err)
	}
}

func calculateMaxMinContractPrice(basePrice decimal.Decimal, isNegative bool) decimal.Decimal {
	rand.New(rand.NewSource(time.Now().UnixNano()))
	max := basePrice.Mul(decimal.NewFromFloat(rand.Float64()*defaultMinStep + rand.Float64()*(defaultMaxStep-defaultMinStep))).Round(digits)
	//	fmt.Println(max)
	if isNegative {
		return basePrice.Sub(max).Round(digits)
	}
	return basePrice.Add(max).Round(digits)
}

// 升序
func insertionSort(nums [][]decimal.Decimal) [][]decimal.Decimal {
	n := len(nums)
	for i := 0; i < n-1; i++ {
		for j := 0; j < n-i-1; j++ {
			if nums[j][0].GreaterThan(nums[j+1][0]) {
				nums[j], nums[j+1] = nums[j+1], nums[j]
			}
		}
	}
	return nums
}

// 降序
func quickSort(nums [][]decimal.Decimal) [][]decimal.Decimal {
	n := len(nums)
	for i := 0; i < n-1; i++ {
		minIdx := i
		for j := i + 1; j < n; j++ {
			if nums[j][0].GreaterThan(nums[minIdx][0]) {
				minIdx = j
			}
		}
		nums[i], nums[minIdx] = nums[minIdx], nums[i]
	}
	return nums
}