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import { useEffect, useMemo, useRef, useState, useCallback } from "react";
import StopDataProvider, { type Stop } from "../data/StopDataProvider";
import StopItem from "../components/StopItem";
import StopItemSkeleton from "../components/StopItemSkeleton";
import Fuse from "fuse.js";
import "./stoplist.css";
import { useTranslation } from "react-i18next";
import { useApp } from "../AppContext";
export default function StopList() {
const { t } = useTranslation();
const { region } = useApp();
const [data, setData] = useState<Stop[] | null>(null);
const [loading, setLoading] = useState(true);
const [searchResults, setSearchResults] = useState<Stop[] | null>(null);
const [favouriteIds, setFavouriteIds] = useState<number[]>([]);
const [recentIds, setRecentIds] = useState<number[]>([]);
const [favouriteStops, setFavouriteStops] = useState<Stop[]>([]);
const [recentStops, setRecentStops] = useState<Stop[]>([]);
const searchTimeout = useRef<NodeJS.Timeout | null>(null);
const randomPlaceholder = useMemo(
() => t("stoplist.search_placeholder"),
[t],
);
const fuse = useMemo(
() => new Fuse(data || [], { threshold: 0.3, keys: ["name.original"] }),
[data],
);
// Load favourite and recent IDs immediately from localStorage
useEffect(() => {
setFavouriteIds(StopDataProvider.getFavouriteIds(region));
setRecentIds(StopDataProvider.getRecent(region));
}, [region]);
// Load stops from network
const loadStops = useCallback(async () => {
try {
setLoading(true);
const stops = await StopDataProvider.loadStopsFromNetwork(region);
// Add favourite flags to stops
const favouriteStopsIds = StopDataProvider.getFavouriteIds(region);
const stopsWithFavourites = stops.map(stop => ({
...stop,
favourite: favouriteStopsIds.includes(stop.stopId)
}));
setData(stopsWithFavourites);
// Update favourite and recent stops with full data
const favStops = stopsWithFavourites.filter(stop =>
favouriteStopsIds.includes(stop.stopId)
);
setFavouriteStops(favStops);
const recIds = StopDataProvider.getRecent(region);
const recStops = recIds
.map(id => stopsWithFavourites.find(stop => stop.stopId === id))
.filter(Boolean) as Stop[];
setRecentStops(recStops.reverse());
} catch (error) {
console.error("Failed to load stops:", error);
} finally {
setLoading(false);
}
}, [region]);
useEffect(() => {
loadStops();
}, [loadStops]);
const handleStopSearch = (event: React.ChangeEvent<HTMLInputElement>) => {
const stopName = event.target.value || "";
if (searchTimeout.current) {
clearTimeout(searchTimeout.current);
}
searchTimeout.current = setTimeout(() => {
if (stopName.length === 0) {
setSearchResults(null);
return;
}
if (!data) {
console.error("No data available for search");
return;
}
const results = fuse.search(stopName);
const items = results.map((result) => result.item);
setSearchResults(items);
}, 300);
};
return (
<div className="page-container stoplist-page">
<h1 className="page-title">UrbanoVigo Web</h1>
<form className="search-form">
<div className="form-group">
<label className="form-label" htmlFor="stopName">
{t("stoplist.search_label", "Buscar paradas")}
</label>
<input
className="form-input"
type="text"
placeholder={randomPlaceholder}
id="stopName"
onChange={handleStopSearch}
/>
</div>
</form>
{searchResults && searchResults.length > 0 && (
<div className="list-container">
<h2 className="page-subtitle">
{t("stoplist.search_results", "Resultados de la búsqueda")}
</h2>
<ul className="list">
{searchResults.map((stop: Stop) => (
<StopItem key={stop.stopId} stop={stop} />
))}
</ul>
</div>
)}
<div className="list-container">
<h2 className="page-subtitle">{t("stoplist.favourites")}</h2>
{favouriteIds.length === 0 && (
<p className="message">
{t(
"stoplist.no_favourites",
"Accede a una parada y márcala como favorita para verla aquí.",
)}
</p>
)}
<ul className="list">
{loading && favouriteIds.length > 0 &&
favouriteIds.map((id) => (
<StopItemSkeleton key={id} showId={true} stopId={id} />
))
}
{!loading && favouriteStops
.sort((a, b) => a.stopId - b.stopId)
.map((stop) => <StopItem key={stop.stopId} stop={stop} />)}
</ul>
</div>
{(recentIds.length > 0 || (!loading && recentStops.length > 0)) && (
<div className="list-container">
<h2 className="page-subtitle">{t("stoplist.recents")}</h2>
<ul className="list">
{loading && recentIds.length > 0 &&
recentIds.map((id) => (
<StopItemSkeleton key={id} showId={true} stopId={id} />
))
}
{!loading && recentStops.map((stop) => (
<StopItem key={stop.stopId} stop={stop} />
))}
</ul>
</div>
)}
<div className="list-container">
<h2 className="page-subtitle">{t("stoplist.all_stops", "Paradas")}</h2>
<ul className="list">
{loading && (
<>
{Array.from({ length: 8 }, (_, index) => (
<StopItemSkeleton key={`skeleton-${index}`} />
))}
</>
)}
{!loading && data
?.sort((a, b) => a.stopId - b.stopId)
.map((stop) => <StopItem key={stop.stopId} stop={stop} />)}
</ul>
</div>
</div>
);
}
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