79 lines
2.8 KiB
TypeScript
79 lines
2.8 KiB
TypeScript
"use client";
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import { useMemo } from "react";
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import type { Journey } from "@timetoleave/core";
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import { useReminderSettings } from "@/hooks/useReminderSettings";
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interface DepartureTimeResult {
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departureTime: Date | null;
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arrivalTime: Date | null;
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mode: "train" | "bike" | null;
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}
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export function useDepartureTime(
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eventTime: Date,
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journeys: Journey[] | null,
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bikeRoute: number | null, // duration in seconds
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activeMode: "train" | "bike" | null
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): DepartureTimeResult {
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const { arrivalBufferMinutes } = useReminderSettings();
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return useMemo(() => {
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// Calculate target arrival time (event time minus buffer)
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const targetArrivalTime = new Date(eventTime);
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targetArrivalTime.setMinutes(targetArrivalTime.getMinutes() - arrivalBufferMinutes);
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// Filter out cancelled journeys
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const validJourneys = journeys?.filter(journey => !journey.cancelled) || [];
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let departureTime: Date | null = null;
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let arrivalTime: Date | null = null;
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let mode: "train" | "bike" | null = null;
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// Handle train mode
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if (activeMode === "train" && validJourneys.length > 0) {
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// Find journeys that arrive before or at the target arrival time
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const onTimeJourneys = validJourneys.filter(journey =>
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journey.sA.getTime() <= targetArrivalTime.getTime()
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);
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if (onTimeJourneys.length > 0) {
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// Pick the journey with the latest departure time
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const bestJourney = onTimeJourneys.reduce((latest, current) =>
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current.sD.getTime() > latest.sD.getTime() ? current : latest
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);
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departureTime = new Date(bestJourney.sD);
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arrivalTime = new Date(bestJourney.sA);
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mode = "train";
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}
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}
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// Handle bike mode
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if (activeMode === "bike" && bikeRoute !== null && bikeRoute > 0) {
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// Convert bike route duration from seconds to milliseconds
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const bikeDurationMs = bikeRoute * 1000;
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// Calculate arrival time by subtracting bike duration from event time
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const calculatedArrivalTime = new Date(eventTime);
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calculatedArrivalTime.setTime(calculatedArrivalTime.getTime() - bikeDurationMs);
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// Calculate departure time by subtracting bike duration from calculated arrival time
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const calculatedDepartureTime = new Date(calculatedArrivalTime);
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calculatedDepartureTime.setTime(calculatedArrivalTime.getTime() - bikeDurationMs);
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// Calculate how much earlier we need to account for arrival buffer
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const totalBufferMs = arrivalBufferMinutes * 60 * 1000;
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const totalTravelTimeMs = bikeDurationMs * 2 + totalBufferMs;
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departureTime = new Date(eventTime);
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departureTime.setTime(eventTime.getTime() - totalTravelTimeMs);
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arrivalTime = new Date(calculatedArrivalTime);
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mode = "bike";
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}
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return { departureTime, arrivalTime, mode };
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}, [eventTime, journeys, bikeRoute, activeMode, arrivalBufferMinutes]);
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}
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