Geocoder

1<script lang="ts">
2	import { Input } from '$lib/components/ui/input';
3	import { cn } from '$UTILS$';
4	import { Check, Loader, MapPin, X } from '@lucide/svelte';
5	import { fly } from 'svelte/transition';
6	import type { Snippet } from 'svelte';
7	import type { GeoLocation } from '.';
8	import Highlight from './geocoder-highlight.svelte';
9	import { formatAddress, type AddressConvention } from './format';
10 
11	let {
12		value = $bindable(''),
13		selected = $bindable<GeoLocation | null>(null),
14		loading = false,
15		placeholder = 'Search for a location...',
16		labelKey,
17		format = 'short',
18		convention = 'auto',
19		showCountry = true,
20		language,
21		class: className,
22		onSelect,
23		locationSnippet,
24		emptySnippet,
25		...rest
26	}: {
27		value: string;
28		selected?: GeoLocation | null;
29		loading?: boolean;
30		placeholder?: string;
31		labelKey?: keyof GeoLocation;
32		/**
33		 * `short` builds a compact address from the structured fields, `full` uses
34		 * Nominatim's raw `display_name`, or pass a function for total control.
35		 */
36		format?: 'short' | 'full' | ((location: GeoLocation) => string);
37		/** Address ordering. `auto` follows the country of each result. */
38		convention?: AddressConvention | 'auto';
39		showCountry?: boolean;
40		/** Sent as `accept-language`, so results come back localised. */
41		language?: string;
42		class?: string;
43		onSelect?: (loc: GeoLocation) => void;
44		locationSnippet?: Snippet<[GeoLocation, boolean]>;
45		emptySnippet?: Snippet;
46		[key: string]: any;
47	} = $props();
48 
49	/** The single source of truth for a result's label. */
50	function label(loc: GeoLocation) {
51		if (typeof format === 'function') return format(loc);
52		if (format === 'full') return loc.display_name;
53		return formatAddress(loc, { convention, showCountry });
54	}
55 
56	let isOpen = $state(false);
57	let activeIndex = $state(-1);
58 
59	let inputContainerRef = $state<HTMLDivElement | null>(null);
60	let listRef = $state<HTMLDivElement | null>(null);
61 
62	let options: GeoLocation[] = $state([]);
63 
64	function open() {
65		isOpen = true;
66		activeIndex = -1;
67	}
68 
69	function close() {
70		isOpen = false;
71		activeIndex = -1;
72	}
73 
74	function handleInput(e: Event) {
75		value = (e.target as HTMLInputElement).value;
76		if (value.length > 0) open();
77		else close();
78	}
79 
80	function handleSelect(loc: GeoLocation) {
81		selected = loc;
82		value = labelKey ? String(loc[labelKey]) : label(loc);
83 
84		if (onSelect) onSelect(loc);
85		close();
86	}
87 
88	function handleKeydown(e: KeyboardEvent) {
89		if (!isOpen) {
90// … truncated