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Maurice
15 lines
798 B
TypeScript
15 lines
798 B
TypeScript
import { formatClock, parseClock } from './roadtripModel'
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import type { RoadtripDay } from '@trek/shared/roadtrip'
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export function stopArrival(day: RoadtripDay, index: number, alongKm: number): string | null {
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if (index === 0) return day.schedule.entries[0]?.arrival ?? null
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const departure = parseClock(day.schedule.entries[index - 1]?.departure)
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const leg = day.legs[index - 1]
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if (departure === null || !leg) return null
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const before = day.legs.slice(0, index - 1)
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if (before.some(leg => !leg)) return null
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const distanceBefore = before.reduce((total, leg) => total + leg!.distance, 0)
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const fraction = leg.distance > 0 ? Math.max(0, Math.min(1, (alongKm * 1000 - distanceBefore) / leg.distance)) : 0
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return formatClock(Math.round(departure + leg.duration / 60 * fraction))
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}
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