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import { useCallback, useEffect, useState } from "react";
import {
type PlannerSearchResult,
type RoutePlan,
planRoute,
} from "../data/PlannerApi";
const STORAGE_KEY = "planner_last_route";
const EXPIRY_MS = 2 * 60 * 60 * 1000; // 2 hours
interface StoredRoute {
timestamp: number;
origin: PlannerSearchResult;
destination: PlannerSearchResult;
plan: RoutePlan;
searchTime?: Date;
arriveBy?: boolean;
selectedItineraryIndex?: number;
}
export function usePlanner() {
const [origin, setOrigin] = useState<PlannerSearchResult | null>(null);
const [destination, setDestination] = useState<PlannerSearchResult | null>(
null
);
const [plan, setPlan] = useState<RoutePlan | null>(null);
const [loading, setLoading] = useState(false);
const [error, setError] = useState<string | null>(null);
const [searchTime, setSearchTime] = useState<Date | null>(null);
const [arriveBy, setArriveBy] = useState(false);
const [selectedItineraryIndex, setSelectedItineraryIndex] = useState<
number | null
>(null);
// Load from storage on mount
useEffect(() => {
const stored = localStorage.getItem(STORAGE_KEY);
if (stored) {
try {
const data: StoredRoute = JSON.parse(stored);
if (Date.now() - data.timestamp < EXPIRY_MS) {
setOrigin(data.origin);
setDestination(data.destination);
setPlan(data.plan);
setSearchTime(data.searchTime ? new Date(data.searchTime) : null);
setArriveBy(data.arriveBy ?? false);
setSelectedItineraryIndex(data.selectedItineraryIndex ?? null);
} else {
localStorage.removeItem(STORAGE_KEY);
}
} catch (e) {
localStorage.removeItem(STORAGE_KEY);
}
}
}, []);
const searchRoute = async (
from: PlannerSearchResult,
to: PlannerSearchResult,
time?: Date,
arriveByParam: boolean = false
) => {
setLoading(true);
setError(null);
try {
const result = await planRoute(
from.lat,
from.lon,
to.lat,
to.lon,
time,
arriveByParam
);
setPlan(result);
setOrigin(from);
setDestination(to);
setSearchTime(time ?? new Date());
setArriveBy(arriveByParam);
setSelectedItineraryIndex(null); // Reset when doing new search
// Save to storage
const toStore: StoredRoute = {
timestamp: Date.now(),
origin: from,
destination: to,
plan: result,
searchTime: time ?? new Date(),
arriveBy: arriveByParam,
selectedItineraryIndex: null,
};
localStorage.setItem(STORAGE_KEY, JSON.stringify(toStore));
} catch (err) {
setError("Failed to calculate route. Please try again.");
setPlan(null);
} finally {
setLoading(false);
}
};
const clearRoute = () => {
setPlan(null);
setOrigin(null);
setDestination(null);
setSearchTime(null);
setArriveBy(false);
setSelectedItineraryIndex(null);
localStorage.removeItem(STORAGE_KEY);
};
const selectItinerary = useCallback((index: number) => {
setSelectedItineraryIndex(index);
// Update storage
const stored = localStorage.getItem(STORAGE_KEY);
if (stored) {
try {
const data: StoredRoute = JSON.parse(stored);
data.selectedItineraryIndex = index;
localStorage.setItem(STORAGE_KEY, JSON.stringify(data));
} catch (e) {
// Ignore
}
}
}, []);
const deselectItinerary = useCallback(() => {
setSelectedItineraryIndex(null);
// Update storage
const stored = localStorage.getItem(STORAGE_KEY);
if (stored) {
try {
const data: StoredRoute = JSON.parse(stored);
data.selectedItineraryIndex = null;
localStorage.setItem(STORAGE_KEY, JSON.stringify(data));
} catch (e) {
// Ignore
}
}
}, []);
return {
origin,
setOrigin,
destination,
setDestination,
plan,
loading,
error,
searchTime,
arriveBy,
selectedItineraryIndex,
searchRoute,
clearRoute,
selectItinerary,
deselectItinerary,
};
}
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