"use client"
import { useMemo, useState } from "react"
import {
DataGrid,
DataGridContainer,
dataGridFeatures,
type DataGridFeatures,
} from "@/components/reui/data-grid/data-grid"
import { DataGridColumnHeader } from "@/components/reui/data-grid/data-grid-column-header"
import { DataGridScrollArea } from "@/components/reui/data-grid/data-grid-scroll-area"
import { DataGridTable } from "@/components/reui/data-grid/data-grid-table"
import {
FileType,
getFileType,
getFileTypeCategory,
type FileTypeCategory,
} from "@/components/reui/file-type"
import { useTable } from "@tanstack/react-table"
import type { ColumnDef, SortingState } from "@tanstack/react-table"
interface FileItem {
id: string
name: string
kind: "file" | "folder"
/** Bytes. Files only: a folder has an item count instead. */
size?: number
items?: number
/** ISO date. */
modified: string
owner: string
}
const files: FileItem[] = [
{
id: "1",
name: "Brand assets",
kind: "folder",
items: 24,
modified: "2026-10-02",
owner: "Ava Patel",
},
{
id: "2",
name: "Legal",
kind: "folder",
items: 6,
modified: "2026-09-21",
owner: "Marco Silva",
},
{
id: "3",
name: "Q3 financial report.pdf",
kind: "file",
size: 2516582,
modified: "2026-10-05",
owner: "Marco Silva",
},
{
id: "4",
name: "Customer interviews - synthesis and next steps.docx",
kind: "file",
size: 190464,
modified: "2026-10-06",
owner: "You",
},
{
id: "5",
name: "Revenue forecast 2027.xlsx",
kind: "file",
size: 933888,
modified: "2026-10-01",
owner: "Lena Fischer",
},
{
id: "6",
name: "Waitlist export.csv",
kind: "file",
size: 5033165,
modified: "2026-09-29",
owner: "You",
},
{
id: "7",
name: "Launch keynote.pptx",
kind: "file",
size: 19503513,
modified: "2026-10-04",
owner: "Ava Patel",
},
{
id: "8",
name: "Homepage hero.png",
kind: "file",
size: 1363149,
modified: "2026-09-30",
owner: "Ava Patel",
},
{
id: "9",
name: "Team offsite.jpg",
kind: "file",
size: 3250586,
modified: "2026-09-12",
owner: "Lena Fischer",
},
{
id: "10",
name: "Product walkthrough.mp4",
kind: "file",
size: 149631795,
modified: "2026-10-03",
owner: "Noah Kim",
},
{
id: "11",
name: "Podcast episode 12.mp3",
kind: "file",
size: 40055603,
modified: "2026-09-24",
owner: "Noah Kim",
},
{
id: "12",
name: "Press kit.zip",
kind: "file",
size: 59139686,
modified: "2026-10-02",
owner: "Ava Patel",
},
{
id: "13",
name: "Design system.fig",
kind: "file",
size: 24012390,
modified: "2026-10-06",
owner: "Ava Patel",
},
{
id: "14",
name: "app.config.json",
kind: "file",
size: 4301,
modified: "2026-10-06",
owner: "Noah Kim",
},
{
id: "15",
name: "Office floor plan.dwg",
kind: "file",
size: 7864320,
modified: "2026-08-27",
owner: "Lena Fischer",
},
]
const FAMILY_LABELS: Record<Exclude<FileTypeCategory, "file">, string> = {
archive: "Archive",
audio: "Audio",
code: "Code",
design: "Design",
document: "Document",
empty: "File",
executable: "Application",
folder: "Folder",
font: "Font",
image: "Image",
presentation: "Presentation",
spreadsheet: "Spreadsheet",
video: "Video",
}
// A folder name is not a file name: "v2.1 exports" would resolve to a
// "1 exports" extension, so folders never go through getFileType.
function fileTypeOf(file: FileItem) {
return file.kind === "folder" ? "folder" : getFileType(file.name)
}
function kindOf(file: FileItem) {
const type = fileTypeOf(file)
const category = getFileTypeCategory(type)
// An unknown extension has no family to name, so it names the kind itself.
return category === "file"
? `${type.toUpperCase()} file`
: FAMILY_LABELS[category]
}
const UNITS = ["B", "KB", "MB", "GB"]
const sizeNumber = new Intl.NumberFormat("en-US", { maximumFractionDigits: 1 })
function formatBytes(bytes: number) {
let value = bytes
let unit = 0
while (value >= 1024 && unit < UNITS.length - 1) {
value /= 1024
unit += 1
}
return `${sizeNumber.format(value)} ${UNITS[unit]}`
}
// A date-only ISO string parses as UTC midnight, so it is formatted in UTC:
// a local zone west of it would show the previous day, and differ from the
// server render.
const dateFormat = new Intl.DateTimeFormat("en-US", {
month: "short",
day: "numeric",
year: "numeric",
timeZone: "UTC",
})
// A fixed locale keeps the order identical on the server and the client, and
// numeric puts "episode 2" before "episode 12".
const collator = new Intl.Collator("en", { numeric: true, sensitivity: "base" })
// Folders group ahead of files, as in a file manager. A descending sort
// reverses the whole order, so they then move to the end.
function compareByName(a: FileItem, b: FileItem) {
if (a.kind !== b.kind) return a.kind === "folder" ? -1 : 1
return collator.compare(a.name, b.name)
}
export function Pattern() {
const [sorting, setSorting] = useState<SortingState>([
{ id: "name", desc: false },
])
const columns = useMemo<ColumnDef<DataGridFeatures, FileItem>[]>(
() => [
{
accessorKey: "name",
id: "name",
header: ({ column }) => (
<DataGridColumnHeader title="Name" column={column} />
),
cell: ({ row }) => {
const file = row.original
// The name already reads its extension, so a file's icon is
// hidden. A folder name says nothing about what the row is, so
// the folder icon keeps its "Folder" name.
return (
<div className="flex min-w-0 items-center gap-2">
<FileType
type={fileTypeOf(file)}
size="mini"
aria-hidden={file.kind === "folder" ? undefined : true}
/>
<span className="truncate font-medium" title={file.name}>
{file.name}
</span>
</div>
)
},
sortFn: (a, b) => compareByName(a.original, b.original),
size: 300,
},
{
id: "type",
accessorFn: kindOf,
header: ({ column }) => (
<DataGridColumnHeader title="Type" column={column} />
),
size: 130,
},
{
accessorKey: "size",
header: ({ column }) => (
<DataGridColumnHeader title="Size" column={column} />
),
cell: ({ row }) => {
const { size, items } = row.original
return size === undefined ? (
<span className="text-muted-foreground">{items} items</span>
) : (
formatBytes(size)
)
},
// Folders have no byte size, so they sit last in both directions.
sortFn: "basic",
sortUndefined: "last",
size: 100,
// The header is a padded button in a flex row: justify-end moves it
// to the end, and -me-2 mirrors the header's own -ms-2, so the sort
// arrow lines up with the figures below.
meta: {
headerClassName: "text-end [&>div]:-me-2 [&>div]:justify-end",
cellClassName: "text-end tabular-nums",
},
},
{
accessorKey: "modified",
header: ({ column }) => (
<DataGridColumnHeader title="Modified" column={column} />
),
cell: ({ row }) => dateFormat.format(new Date(row.original.modified)),
// ISO dates sort chronologically as plain text.
sortFn: "text",
size: 130,
},
{
accessorKey: "owner",
header: ({ column }) => (
<DataGridColumnHeader title="Owner" column={column} />
),
size: 140,
},
],
[]
)
const table = useTable({
features: dataGridFeatures,
// The shared bundle registers a pagination row model; manualPagination
// says the data is already the page, so every file renders.
manualPagination: true,
columns,
data: files,
getRowId: (row: FileItem) => row.id,
state: { sorting },
onSortingChange: setSorting,
})
return (
<DataGrid table={table} recordCount={files.length}>
<DataGridContainer>
<DataGridScrollArea>
<DataGridTable />
</DataGridScrollArea>
</DataGridContainer>
</DataGrid>
)
}