blob: 55d0e78cc1b916153732bde1400c7b8ad3d13e53 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
export interface CachedStopList {
timestamp: number;
data: Stop[];
}
export type StopName = {
original: string;
intersect?: string;
}
export interface Stop {
stopId: number;
name: StopName;
latitude?: number;
longitude?: number;
lines: string[];
favourite?: boolean;
}
export default {
getStops,
getDisplayName,
addFavourite,
removeFavourite,
isFavourite,
pushRecent,
getRecent
};
async function getStops(): Promise<Stop[]> {
const rawFavouriteStops = localStorage.getItem('favouriteStops');
let favouriteStops: number[] = [];
if (rawFavouriteStops) {
favouriteStops = JSON.parse(rawFavouriteStops) as number[];
}
const response = await fetch('/stops.json');
const stops = await response.json() as Stop[];
return stops.map((stop: Stop) => {
return {
...stop,
favourite: favouriteStops.includes(stop.stopId)
};
});
}
// Get display name based on preferences or context
function getDisplayName(stop: Stop): string {
if (typeof stop.name === 'string') {
return stop.name;
}
return stop.name.intersect || stop.name.original;
}
function addFavourite(stopId: number) {
const rawFavouriteStops = localStorage.getItem('favouriteStops');
let favouriteStops: number[] = [];
if (rawFavouriteStops) {
favouriteStops = JSON.parse(rawFavouriteStops) as number[];
}
if (!favouriteStops.includes(stopId)) {
favouriteStops.push(stopId);
localStorage.setItem('favouriteStops', JSON.stringify(favouriteStops));
}
}
function removeFavourite(stopId: number) {
const rawFavouriteStops = localStorage.getItem('favouriteStops');
let favouriteStops: number[] = [];
if (rawFavouriteStops) {
favouriteStops = JSON.parse(rawFavouriteStops) as number[];
}
const newFavouriteStops = favouriteStops.filter(id => id !== stopId);
localStorage.setItem('favouriteStops', JSON.stringify(newFavouriteStops));
}
function isFavourite(stopId: number): boolean {
const rawFavouriteStops = localStorage.getItem('favouriteStops');
if (rawFavouriteStops) {
const favouriteStops = JSON.parse(rawFavouriteStops) as number[];
return favouriteStops.includes(stopId);
}
return false;
}
const RECENT_STOPS_LIMIT = 10;
function pushRecent(stopId: number) {
const rawRecentStops = localStorage.getItem('recentStops');
let recentStops: Set<number> = new Set();
if (rawRecentStops) {
recentStops = new Set(JSON.parse(rawRecentStops) as number[]);
}
recentStops.add(stopId);
if (recentStops.size > RECENT_STOPS_LIMIT) {
const iterator = recentStops.values();
const val = iterator.next().value as number;
recentStops.delete(val);
}
localStorage.setItem('recentStops', JSON.stringify(Array.from(recentStops)));
}
function getRecent(): number[] {
const rawRecentStops = localStorage.getItem('recentStops');
if (rawRecentStops) {
return JSON.parse(rawRecentStops) as number[];
}
return [];
}
|
