"use client"

import {
    ColumnDef,
    ColumnFiltersState,
    SortingState,
    flexRender,
    getCoreRowModel,
    getFilteredRowModel,
    getPaginationRowModel,
    getSortedRowModel,
    useReactTable,
} from "@tanstack/react-table"
import {
    Table,
    TableBody,
    TableCell,
    TableHead,
    TableHeader,
    TableRow,
} from "@/components/ui/table"
import { Button } from "@/components/ui/button"
import { Input } from "@/components/ui/input"
import * as React from "react"

interface DataTableProps<TData, TValue> {
    columns: ColumnDef<TData, TValue>[]
    data: TData[]
    searchKey: string
    searchPlaceholder?: string,
    headerActions?: React.ReactNode,
}

export function DataTable<TData, TValue>({
    columns,
    data,
    searchKey,
    searchPlaceholder,
    headerActions,

}: DataTableProps<TData, TValue>) {
    const [sorting, setSorting] = React.useState<SortingState>([])
    const [columnFilters, setColumnFilters] = React.useState<ColumnFiltersState>(
        []
      )

    const table = useReactTable({
        data,
        columns,
        getCoreRowModel: getCoreRowModel(),
        getPaginationRowModel: getPaginationRowModel(),
        onSortingChange: setSorting,
        getSortedRowModel: getSortedRowModel(),
        onColumnFiltersChange: setColumnFilters,
        getFilteredRowModel: getFilteredRowModel(),
        autoResetPageIndex: false,
        state: {
            sorting,
            columnFilters,
        },
    })

    return (
        <div>
            <div className="flex items-center py-4">
                <Input
                    placeholder={searchPlaceholder}
                    value={(table.getColumn(searchKey)?.getFilterValue() as string) ?? ""}
                    onChange={(event) =>
                        table.getColumn(searchKey)?.setFilterValue(event.target.value)
                    }
                    className="max-w-sm"
                />
                {/*
                    TODO(auth): Combine this logic with existing add repo button logic in AddRepoButton component
                    Show a button on the demo site that allows users to add new repositories
                    by updating the demo-site-config.json file and opening a PR.
                */}
                {headerActions}
            </div>
            <div className="rounded-md border">
                <Table>
                    <TableHeader>
                        {table.getHeaderGroups().map((headerGroup) => (
                            <TableRow key={headerGroup.id}>
                                {headerGroup.headers.map((header) => {
                                    return (
                                        <TableHead 
                                            key={header.id}
                                            style={{ width: `${header.getSize()}px` }}
                                        >
                                            {header.isPlaceholder
                                                ? null
                                                : flexRender(
                                                    header.column.columnDef.header,
                                                    header.getContext()
                                                )}
                                        </TableHead>
                                    )
                                })}
                            </TableRow>
                        ))}
                    </TableHeader>
                    <TableBody>
                        {table.getRowModel().rows?.length ? (
                            table.getRowModel().rows.map((row) => (
                                <TableRow
                                    key={row.id}
                                    data-state={row.getIsSelected() && "selected"}
                                >
                                    {row.getVisibleCells().map((cell) => (
                                        <TableCell 
                                            key={cell.id}
                                            style={{ width: `${cell.column.getSize()}px` }}
                                        >
                                            {flexRender(cell.column.columnDef.cell, cell.getContext())}
                                        </TableCell>
                                    ))}
                                </TableRow>
                            ))
                        ) : (
                            <TableRow>
                                <TableCell colSpan={columns.length} className="h-24 text-center">
                                    No results.
                                </TableCell>
                            </TableRow>
                        )}
                    </TableBody>
                </Table>
            </div>
            <div className="flex items-center justify-end space-x-2 py-4">
                <Button
                    variant="outline"
                    size="sm"
                    onClick={() => table.previousPage()}
                    disabled={!table.getCanPreviousPage()}
                >
                    Previous
                </Button>
                <Button
                    variant="outline"
                    size="sm"
                    onClick={() => table.nextPage()}
                    disabled={!table.getCanNextPage()}
                >
                    Next
                </Button>
            </div>
        </div>
    )
}