88 lines
2.0 KiB
Go
88 lines
2.0 KiB
Go
package briefing
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import (
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"fmt"
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"math"
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"time"
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"gitea.maximumdirect.net/eric/weatherreporter/internal/forecast"
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"gitea.maximumdirect.net/eric/weatherreporter/internal/timeutil"
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)
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func rangeLabel(value forecast.Range) string {
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if value.Min == nil && value.Max == nil {
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return ""
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}
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if value.Min != nil && value.Max != nil {
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low := roundedInt(value.Min)
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high := roundedInt(value.Max)
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if low != nil && high != nil && *low == *high {
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return fmt.Sprintf("%d", *low)
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}
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return fmt.Sprintf("%d-%d", *low, *high)
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}
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if value.Min != nil {
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low := roundedInt(value.Min)
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return fmt.Sprintf("%d", *low)
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}
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high := roundedInt(value.Max)
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return fmt.Sprintf("%d", *high)
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}
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func daypartApparentRangeLabel(value forecast.Range) string {
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if value.Min == nil && value.Max == nil {
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return ""
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}
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return rangeLabel(value)
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}
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func roundedInt(value *float64) *int {
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if value == nil {
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return nil
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}
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rounded := int(*value + 0.5)
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if *value < 0 {
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rounded = int(*value - 0.5)
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}
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return &rounded
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}
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func windDirectionLabel(degrees *float64) string {
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if degrees == nil {
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return ""
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}
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labels := []string{"N", "NNE", "NE", "ENE", "E", "ESE", "SE", "SSE", "S", "SSW", "SW", "WSW", "W", "WNW", "NW", "NNW"}
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normalized := math.Mod(*degrees, 360)
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if normalized < 0 {
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normalized += 360
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}
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sector := int(math.Floor((normalized+11.25)/22.5)) % len(labels)
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return labels[sector]
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}
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func timedClockLabel(value *forecast.TimedValue, timezone string) string {
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if value == nil {
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return ""
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}
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return clockLabel(value.Time, timezone)
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}
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func periodClockLabel(period timeutil.Period, timezone string) string {
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if !period.IsValid() {
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return ""
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}
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return clockLabel(period.Start, timezone) + "-" + clockLabel(period.End, timezone)
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}
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func clockLabel(value time.Time, timezone string) string {
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location, err := timeutil.LoadLocation(timezone)
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if err != nil {
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location = time.UTC
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}
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label := value.In(location).Format("3 PM")
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if label == "12 AM" && value.In(location).Minute() == 0 {
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return "12 AM"
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}
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return label
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}
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