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import { Command } from 'cmdk'
import { Button } from '@/components/ui/button'
import { ChevronDown } from 'lucide-react'
export interface SelectionOption {
value: string
label: string
description?: string
group?: string
}
interface EntitySelectProps {
options: SelectionOption[]
value: string | string[] | undefined
onChange?: (value: string | string[] | undefined) => void
multiple?: boolean
readOnly?: boolean
placeholder?: string
isLoading?: boolean
error?: Error | null
disabled?: boolean
}
function getTriggerLabel(
value: string | string[] | undefined,
options: SelectionOption[],
placeholder: string,
multiple: boolean,
): string {
Eif (value === undefined || (multiple && Array.isArray(value) && value.length === 0)) {
return placeholder
}
if (multiple && Array.isArray(value)) {
const labels = value
.map((v) => options.find((o) => o.value === v)?.label)
.filter(Boolean)
if (labels.length === 0) return placeholder
return labels.join(', ')
}
const opt = options.find((o) => o.value === value)
return opt ? opt.label : String(value)
}
function isTriggerDisabled(
isLoading: boolean,
error: Error | null | undefined,
disabled: boolean,
options: SelectionOption[],
_value: string | string[] | undefined,
_multiple: boolean,
): boolean {
return isLoading || !!error || disabled || options.length === 0
}
function sortOptions(options: SelectionOption[]): SelectionOption[] {
const grouped = new Map<string, SelectionOption[]>()
const ungrouped: SelectionOption[] = []
for (const opt of options) {
Iif (opt.group) {
const g = grouped.get(opt.group) ?? []
g.push(opt)
grouped.set(opt.group, g)
} else {
ungrouped.push(opt)
}
}
const sortedGroupKeys = [...grouped.keys()].sort()
const result: SelectionOption[] = []
ungrouped.sort((a, b) => a.label.localeCompare(b.label))
result.push(...ungrouped)
for (const key of sortedGroupKeys) {
const g = grouped.get(key)!
g.sort((a, b) => a.label.localeCompare(b.label))
result.push(...g)
}
return result
}
export function EntitySelect({
options,
value,
onChange,
multiple = false,
readOnly = false,
placeholder = 'Select...',
isLoading = false,
error = null,
disabled = false,
}: EntitySelectProps) {
const [open, setOpen] = useState(false)
const containerRef = useRef<HTMLDivElement>(null)
const triggerDisabled = isTriggerDisabled(isLoading, error, disabled, options, value, multiple)
const handleSelect = useCallback(
(selectedValue: string) => {
if (multiple && Array.isArray(value)) {
const next = value.includes(selectedValue)
? value.filter((v) => v !== selectedValue)
: [...value, selectedValue]
onChange?.(next.length > 0 ? next : [])
} else {
onChange?.(selectedValue)
setOpen(false)
}
},
[multiple, value, onChange],
)
useEffect(() => {
if (!open) return
function handleClickOutside(e: MouseEvent) {
Iif (containerRef.current && !containerRef.current.contains(e.target as Node)) {
setOpen(false)
}
}
document.addEventListener('mousedown', handleClickOutside)
return () => document.removeEventListener('mousedown', handleClickOutside)
}, [open])
const isSelected = useCallback(
(optValue: string) => {
Eif (multiple && Array.isArray(value)) {
return value.includes(optValue)
}
return value === optValue
},
[multiple, value],
)
if (readOnly) {
if (multiple && Array.isArray(value)) {
const labels = value
.map((v) => {
const opt = options.find((o) => o.value === v)
return opt ? opt.label : v
})
.join(', ')
return <span className="text-sm text-muted-foreground">{labels || '\u2014'}</span>
}
const singleValue = value as string | undefined
Eif (singleValue) {
const opt = options.find((o) => o.value === singleValue)
if (opt) {
const text = opt.description
? `${opt.label} \u2014 ${opt.description}`
: opt.label
return <span className="text-sm">{text}</span>
}
return <span className="text-sm text-muted-foreground">{singleValue}</span>
}
return null
}
let displayText: string
if (isLoading) {
displayText = 'Loading...'
} else if (error) {
displayText = error.message
} else if (options.length === 0) {
displayText = 'No data available'
} else {
displayText = getTriggerLabel(value, options, placeholder, multiple)
}
return (
<div ref={containerRef} className="relative">
<Button
type="button"
variant="outline"
disabled={triggerDisabled}
onClick={() => setOpen((prev) => !prev)}
className="flex h-9 w-full items-center justify-between px-3 text-sm font-normal"
>
<span>{displayText}</span>
<ChevronDown className="ml-2 size-4 shrink-0 text-muted-foreground" />
</Button>
{open && (
<div className="absolute z-50 mt-1 w-full rounded-lg border bg-card p-1 shadow-lg">
<Command className="rounded-lg">
<Command.Input
placeholder="Search..."
className="flex h-9 w-full border-none bg-transparent px-3 text-sm outline-none placeholder:text-muted-foreground"
/>
<Command.List className="max-h-60 overflow-y-auto">
<Command.Empty className="py-6 text-center text-sm text-muted-foreground">
No results found
</Command.Empty>
{renderOptions(sortOptions(options), multiple, isSelected, handleSelect)}
</Command.List>
</Command>
</div>
)}
</div>
)
}
function renderOptions(
sorted: SelectionOption[],
multiple: boolean,
isSelected: (value: string) => boolean,
onSelect: (value: string) => void,
) {
const groups = new Map<string, SelectionOption[]>()
const ungrouped: SelectionOption[] = []
for (const opt of sorted) {
Iif (opt.group) {
const g = groups.get(opt.group) ?? []
g.push(opt)
groups.set(opt.group, g)
} else {
ungrouped.push(opt)
}
}
return (
<>
{ungrouped.map((opt) => (
<Command.Item
key={opt.value}
value={`${opt.label} ${opt.description ?? ''}`}
onSelect={() => onSelect(opt.value)}
className="flex items-center gap-2 rounded-md px-3 py-2 text-sm cursor-pointer hover:bg-accent aria-selected:bg-accent"
>
{multiple && (
<input
type="checkbox"
checked={isSelected(opt.value)}
readOnly
className="size-4 cursor-pointer"
/>
)}
<div className="flex flex-col">
<span className="font-medium">{opt.label}</span>
{opt.description && (
<span className="text-xs text-muted-foreground">{opt.description}</span>
)}
</div>
</Command.Item>
))}
{[...groups.entries()].map(([groupName, groupOptions]) => (
<Command.Group
key={groupName}
heading={
<span className="px-2 text-xs font-semibold uppercase text-muted-foreground">
{groupName}
</span>
}
>
{groupOptions.map((opt) => (
<Command.Item
key={opt.value}
value={`${groupName} ${opt.label} ${opt.description ?? ''}`}
onSelect={() => onSelect(opt.value)}
className="flex items-center gap-2 rounded-md px-3 py-2 text-sm cursor-pointer hover:bg-accent aria-selected:bg-accent"
>
{multiple && (
<input
type="checkbox"
checked={isSelected(opt.value)}
readOnly
className="size-4 cursor-pointer"
/>
)}
<div className="flex flex-col">
<span className="font-medium">{opt.label}</span>
{opt.description && (
<span className="text-xs text-muted-foreground">{opt.description}</span>
)}
</div>
</Command.Item>
))}
</Command.Group>
))}
</>
)
}
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