79 lines
2.1 KiB
Go
79 lines
2.1 KiB
Go
package chart
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import (
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"fmt"
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"time"
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"github.com/wcharczuk/go-chart/date"
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)
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// MarketHoursRange is a special type of range that compresses a time range into just the
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// market (i.e. NYSE operating hours and days) range.
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type MarketHoursRange struct {
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Min time.Time
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Max time.Time
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MarketOpen time.Time
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MarketClose time.Time
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HolidayProvider date.HolidayProvider
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Domain int
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}
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// IsZero returns if the range is setup or not.
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func (mhr MarketHoursRange) IsZero() bool {
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return mhr.Min.IsZero() && mhr.Max.IsZero()
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}
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// GetMin returns the min value.
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func (mhr MarketHoursRange) GetMin() float64 {
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return TimeToFloat64(mhr.Min)
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}
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// GetMax returns the max value.
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func (mhr MarketHoursRange) GetMax() float64 {
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return TimeToFloat64(mhr.Max)
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}
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// SetMin sets the min value.
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func (mhr *MarketHoursRange) SetMin(min float64) {
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mhr.Min = Float64ToTime(min)
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}
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// SetMax sets the max value.
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func (mhr *MarketHoursRange) SetMax(max float64) {
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mhr.Max = Float64ToTime(max)
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}
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// GetDelta gets the delta.
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func (mhr MarketHoursRange) GetDelta() float64 {
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min := TimeToFloat64(mhr.Min)
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max := TimeToFloat64(mhr.Max)
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return max - min
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}
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// GetDomain gets the domain.
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func (mhr MarketHoursRange) GetDomain() int {
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return mhr.Domain
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}
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// SetDomain sets the domain.
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func (mhr *MarketHoursRange) SetDomain(domain int) {
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mhr.Domain = domain
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}
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func (mhr MarketHoursRange) String() string {
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return fmt.Sprintf("MarketHoursRange [%s, %s] => %d", mhr.Min.Format(DefaultDateFormat), mhr.Max.Format(DefaultDateFormat), mhr.Domain)
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}
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// Translate maps a given value into the ContinuousRange space.
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func (mhr MarketHoursRange) Translate(value float64) int {
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valueTime := Float64ToTime(value)
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deltaSeconds := date.CalculateMarketSecondsBetween(mhr.Min, mhr.Max, mhr.MarketOpen, mhr.MarketClose, mhr.HolidayProvider)
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valueDelta := date.CalculateMarketSecondsBetween(mhr.Min, valueTime, mhr.MarketOpen, mhr.MarketClose, mhr.HolidayProvider)
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translated := int((float64(valueDelta) / float64(deltaSeconds)) * float64(mhr.Domain))
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fmt.Printf("nyse translating: %s to %d ~= %d", valueTime.Format(time.RFC3339), deltaSeconds, valueDelta)
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return translated
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}
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