package crash

const (
	MaxHistoryLen = 100
	MaxOdd        = 10000   // 最大100倍
	MaxWeight     = 1000000 // 权重总和
)

var (
	times = []int64{20000, 25000, 30000, 35000, 55000, 75000, -1}
	// 上涨赔率(百分位)/秒
	odd = []int64{10, 20, 40, 80, 100, 150, 200}
	// 每个时间段对应的赔率(扩大了100倍)
	odds = []int64{200, 300, 500, 900, 2900, 4900, -1}
)

func getTimes(t int64) int {
	for i, v := range times {
		if t <= v || v <= 0 {
			return i
		}
	}
	return 0
}

func GetOdds(t int64) (odds int64) {
	index := getTimes(t)
	if index > 0 {
		odds += (t - times[index-1]) * odd[index]
	} else {
		odds += t * odd[0]
	}
	for i := index - 1; i >= 0; i-- {
		if i == 0 {
			odds += times[0] * odd[0]
		} else {
			odds += (times[i] - times[i-1]) * odd[i]
		}
	}
	odds /= 1000
	return
}

func GetFlyTime(od int64) (t int64) {
	index := 0
	for i := len(odds) - 2; i >= 0; i-- {
		if od >= odds[i] {
			index = i
			break
		}
	}
	if index == 0 && od <= odds[0] {
		return od * 1000 / odd[index]
	}
	diff := od - odds[index]
	return times[index] + diff*1000/odd[index+1]
}