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Astro.kt
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Astro.kt
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package org.breezyweather.domain.weather.model
import breezyweather.domain.location.model.Location
import breezyweather.domain.weather.model.Astro
import org.breezyweather.common.extensions.toTimezone
import java.util.Calendar
import java.util.Date
import kotlin.time.Duration.Companion.days
import kotlin.time.Duration.Companion.hours
import kotlin.time.Duration.Companion.minutes
/**
* (-inf, 0] -> not yet rise.
* (0, 1) -> has risen, not yet set.
* [1, inf) -> has gone down.
* TODO: Works but the way timezones are handled is wrong
* */
fun getRiseProgress(
astro: Astro?,
location: Location
): Double {
val defaultRiseHour = 6
val defaultDurationHour = 12
val timezoneCalendar = Calendar.getInstance(location.javaTimeZone)
val currentTime = (timezoneCalendar[Calendar.HOUR_OF_DAY].hours +
timezoneCalendar[Calendar.MINUTE].minutes).inWholeMilliseconds
val riseTime = astro?.riseDate?.toTimezone(location.javaTimeZone)?.time
val setTime = astro?.setDate?.toTimezone(location.javaTimeZone)?.time
if (riseTime == null || setTime == null) {
val riseHourMinuteTime = defaultRiseHour.hours.inWholeMilliseconds
val setHourMinuteTime = riseHourMinuteTime + defaultDurationHour.hours.inWholeMilliseconds
if (setHourMinuteTime == riseHourMinuteTime) {
return -1.0
}
return (currentTime - riseHourMinuteTime).toDouble() / (
setHourMinuteTime - riseHourMinuteTime).toDouble()
}
val riseCalendar = Calendar.getInstance().apply { time = Date(riseTime) }
val riseHourMinuteTime = (riseCalendar[Calendar.HOUR_OF_DAY].hours +
riseCalendar[Calendar.MINUTE].minutes).inWholeMilliseconds
var safeSetTime = setTime
while (safeSetTime <= riseTime) {
safeSetTime += 1.days.inWholeMilliseconds
}
val setHourMinuteTime = riseHourMinuteTime + (safeSetTime - riseTime)
return (currentTime - riseHourMinuteTime).toDouble() / (
setHourMinuteTime - riseHourMinuteTime).toDouble()
}