rhf-autocomplete-field

1'use client';
2 
3import type { Lens } from '@hookform/lenses';
4import { Loader2 } from 'lucide-react';
5import * as React from 'react';
6import { useController } from 'react-hook-form';
7import { Command, CommandEmpty, CommandGroup, CommandItem, CommandList } from '@/components/ui/command';
8import { Field, FieldDescription, FieldError, FieldLabel } from '@/components/ui/field';
9import { Input } from '@/components/ui/input';
10import { Popover, PopoverAnchor, PopoverContent } from '@/components/ui/popover';
11import { cn } from '@/lib/utils';
12 
13const DEBOUNCE_TIME = 300;
14 
15function defaultFilter(suggestion: string, query: string) {
16  return suggestion.toLowerCase().includes(query.toLowerCase());
17}
18 
19export interface AutocompleteFieldProps extends Omit<React.ComponentProps<typeof Input>, 'value' | 'onChange'> {
20  lens: Lens<string>;
21  label?: string;
22  description?: string;
23  placeholder?: string;
24  suggestions?: string[];
25  onSearch?: (query: string) => Promise<string[]>;
26  emptyText?: string;
27  debounceMs?: number;
28  filter?: (suggestion: string, query: string) => boolean;
29}
30 
31export function AutocompleteField({
32  lens,
33  label,
34  description,
35  placeholder,
36  suggestions,
37  onSearch,
38  emptyText = 'No results',
39  debounceMs = DEBOUNCE_TIME,
40  filter = defaultFilter,
41  ...props
42}: AutocompleteFieldProps) {
43  const { field, fieldState } = useController(lens.interop());
44 
45  const [open, setOpen] = React.useState(false);
46  const [selectedIndex, setSelectedIndex] = React.useState(-1);
47  const [results, setResults] = React.useState<string[]>([]);
48  const [isPending, startTransition] = React.useTransition();
49  const debounceTimerRef = React.useRef<NodeJS.Timeout | null>(null);
50  const requestIdRef = React.useRef(0);
51  const popoverRef = React.useRef<HTMLDivElement>(null);
52 
53  const query = field.value ?? '';
54 
55  const items = React.useMemo(() => {
56    if (onSearch) return results;
57    if (!suggestions) return [];
58    if (!query) return suggestions;
59    return suggestions.filter((suggestion) => filter(suggestion, query));
60  }, [onSearch, results, suggestions, query, filter]);
61 
62  React.useEffect(() => {
63    if (!onSearch || !open) return;
64 
65    if (debounceTimerRef.current) {
66      clearTimeout(debounceTimerRef.current);
67    }
68 
69    if (!query) {
70      requestIdRef.current++;
71      setResults([]);
72      return;
73    }
74 
75    debounceTimerRef.current = setTimeout(() => {
76      const requestId = ++requestIdRef.current;
77      startTransition(async () => {
78        try {
79// … truncated