"use client";

import * as React from "react";
import {
  DndContext,
  KeyboardSensor,
  MouseSensor,
  TouchSensor,
  closestCenter,
  useSensor,
  useSensors,
  type DragEndEvent,
  type UniqueIdentifier,
} from "@dnd-kit/core";
import { restrictToVerticalAxis } from "@dnd-kit/modifiers";
import { SortableContext, arrayMove, useSortable, verticalListSortingStrategy } from "@dnd-kit/sortable";
import { CSS } from "@dnd-kit/utilities";
import {
  ChevronDown,
  ChevronLeft,
  ChevronRight,
  ChevronsLeft,
  ChevronsRight,
  CircleCheck,
  EllipsisVertical,
  GripVertical,
  Columns2,
  Loader,
  Plus,
  TrendingUp,
} from "lucide-react";
import {
  ColumnDef,
  ColumnFiltersState,
  Row,
  SortingState,
  VisibilityState,
  flexRender,
  getCoreRowModel,
  getFacetedRowModel,
  getFacetedUniqueValues,
  getFilteredRowModel,
  getPaginationRowModel,
  getSortedRowModel,
  useReactTable,
} from "@tanstack/react-table";
import { Area, AreaChart, CartesianGrid, XAxis } from "recharts";
import { toast } from "sonner";
import { z } from "zod";

import { useIsMobile } from "@/hooks/use-mobile";
import { Badge } from "@/components/ui/badge";
import { Button } from "@/components/ui/button";
import { ChartConfig, ChartContainer, ChartTooltip, ChartTooltipContent } from "@/components/ui/chart";
import { Checkbox } from "@/components/ui/checkbox";
import {
  Drawer,
  DrawerClose,
  DrawerContent,
  DrawerDescription,
  DrawerFooter,
  DrawerHeader,
  DrawerTitle,
  DrawerTrigger,
} from "@/components/ui/drawer";
import {
  DropdownMenu,
  DropdownMenuCheckboxItem,
  DropdownMenuContent,
  DropdownMenuItem,
  DropdownMenuSeparator,
  DropdownMenuTrigger,
} from "@/components/ui/dropdown-menu";
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";
import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select";
import { Separator } from "@/components/ui/separator";
import { Table, TableBody, TableCell, TableHead, TableHeader, TableRow } from "@/components/ui/table";
import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs";

export const schema = z.object({
  id: z.number(),
  header: z.string(),
  type: z.string(),
  status: z.string(),
  target: z.string(),
  limit: z.string(),
  reviewer: z.string(),
});

// Create a separate component for the drag handle
function DragHandle({ id }: { id: number }) {
  const { attributes, listeners } = useSortable({
    id,
  });

  return (
    <Button
      {...attributes}
      {...listeners}
      variant="ghost"
      size="icon"
      className="text-muted-foreground size-7 hover:bg-transparent"
    >
      <GripVertical className="text-muted-foreground size-3" />
      <span className="sr-only">Drag to reorder</span>
    </Button>
  );
}

const columns: ColumnDef<z.infer<typeof schema>>[] = [
  {
    id: "drag",
    header: () => null,
    cell: ({ row }) => <DragHandle id={row.original.id} />,
  },
  {
    id: "select",
    header: ({ table }) => (
      <div className="flex items-center justify-center">
        <Checkbox
          checked={table.getIsAllPageRowsSelected() || (table.getIsSomePageRowsSelected() && "indeterminate")}
          onCheckedChange={(value) => table.toggleAllPageRowsSelected(!!value)}
          aria-label="Select all"
        />
      </div>
    ),
    cell: ({ row }) => (
      <div className="flex items-center justify-center">
        <Checkbox
          checked={row.getIsSelected()}
          onCheckedChange={(value) => row.toggleSelected(!!value)}
          aria-label="Select row"
        />
      </div>
    ),
    enableSorting: false,
    enableHiding: false,
  },
  {
    accessorKey: "header",
    header: "Header",
    cell: ({ row }) => {
      return <TableCellViewer item={row.original} />;
    },
    enableHiding: false,
  },
  {
    accessorKey: "type",
    header: "Section Type",
    cell: ({ row }) => (
      <div className="w-32">
        <Badge variant="outline" className="text-muted-foreground px-1.5">
          {row.original.type}
        </Badge>
      </div>
    ),
  },
  {
    accessorKey: "status",
    header: "Status",
    cell: ({ row }) => (
      <Badge variant="outline" className="text-muted-foreground px-1.5">
        {row.original.status === "Done" ? (
          <CircleCheck className="stroke-background fill-green-500 dark:fill-green-400" />
        ) : (
          <Loader />
        )}
        {row.original.status}
      </Badge>
    ),
  },
  {
    accessorKey: "target",
    header: () => <div className="w-full text-right">Target</div>,
    cell: ({ row }) => (
      <form
        onSubmit={(e) => {
          e.preventDefault();
          toast.promise(new Promise((resolve) => setTimeout(resolve, 1000)), {
            loading: `Saving ${row.original.header}`,
            success: "Done",
            error: "Error",
          });
        }}
      >
        <Label htmlFor={`${row.original.id}-target`} className="sr-only">
          Target
        </Label>
        <Input
          className="hover:bg-input/30 focus-visible:bg-background dark:hover:bg-input/30 dark:focus-visible:bg-input/30 h-8 w-16 border-transparent bg-transparent text-right shadow-none focus-visible:border dark:bg-transparent"
          defaultValue={row.original.target}
          id={`${row.original.id}-target`}
        />
      </form>
    ),
  },
  {
    accessorKey: "limit",
    header: () => <div className="w-full text-right">Limit</div>,
    cell: ({ row }) => (
      <form
        onSubmit={(e) => {
          e.preventDefault();
          toast.promise(new Promise((resolve) => setTimeout(resolve, 1000)), {
            loading: `Saving ${row.original.header}`,
            success: "Done",
            error: "Error",
          });
        }}
      >
        <Label htmlFor={`${row.original.id}-limit`} className="sr-only">
          Limit
        </Label>
        <Input
          className="hover:bg-input/30 focus-visible:bg-background dark:hover:bg-input/30 dark:focus-visible:bg-input/30 h-8 w-16 border-transparent bg-transparent text-right shadow-none focus-visible:border dark:bg-transparent"
          defaultValue={row.original.limit}
          id={`${row.original.id}-limit`}
        />
      </form>
    ),
  },
  {
    accessorKey: "reviewer",
    header: "Reviewer",
    cell: ({ row }) => {
      const isAssigned = row.original.reviewer !== "Assign reviewer";

      if (isAssigned) {
        return row.original.reviewer;
      }

      return (
        <>
          <Label htmlFor={`${row.original.id}-reviewer`} className="sr-only">
            Reviewer
          </Label>
          <Select>
            <SelectTrigger
              className="w-38 **:data-[slot=select-value]:block **:data-[slot=select-value]:truncate"
              size="sm"
              id={`${row.original.id}-reviewer`}
            >
              <SelectValue placeholder="Assign reviewer" />
            </SelectTrigger>
            <SelectContent align="end">
              <SelectItem value="Eddie Lake">Eddie Lake</SelectItem>
              <SelectItem value="Jamik Tashpulatov">Jamik Tashpulatov</SelectItem>
            </SelectContent>
          </Select>
        </>
      );
    },
  },
  {
    id: "actions",
    cell: () => (
      <DropdownMenu>
        <DropdownMenuTrigger asChild>
          <Button variant="ghost" className="data-[state=open]:bg-muted text-muted-foreground flex size-8" size="icon">
            <EllipsisVertical />
            <span className="sr-only">Open menu</span>
          </Button>
        </DropdownMenuTrigger>
        <DropdownMenuContent align="end" className="w-32">
          <DropdownMenuItem>Edit</DropdownMenuItem>
          <DropdownMenuItem>Make a copy</DropdownMenuItem>
          <DropdownMenuItem>Favorite</DropdownMenuItem>
          <DropdownMenuSeparator />
          <DropdownMenuItem variant="destructive">Delete</DropdownMenuItem>
        </DropdownMenuContent>
      </DropdownMenu>
    ),
  },
];

function DraggableRow({ row }: { row: Row<z.infer<typeof schema>> }) {
  const { transform, transition, setNodeRef, isDragging } = useSortable({
    id: row.original.id,
  });

  return (
    <TableRow
      data-state={row.getIsSelected() && "selected"}
      data-dragging={isDragging}
      ref={setNodeRef}
      className="relative z-0 data-[dragging=true]:z-10 data-[dragging=true]:opacity-80"
      style={{
        transform: CSS.Transform.toString(transform),
        transition: transition,
      }}
    >
      {row.getVisibleCells().map((cell) => (
        <TableCell key={cell.id}>{flexRender(cell.column.columnDef.cell, cell.getContext())}</TableCell>
      ))}
    </TableRow>
  );
}

export function DataTable({ data: initialData }: { data: z.infer<typeof schema>[] }) {
  const [data, setData] = React.useState(() => initialData);
  const [rowSelection, setRowSelection] = React.useState({});
  const [columnVisibility, setColumnVisibility] = React.useState<VisibilityState>({});
  const [columnFilters, setColumnFilters] = React.useState<ColumnFiltersState>([]);
  const [sorting, setSorting] = React.useState<SortingState>([]);
  const [pagination, setPagination] = React.useState({
    pageIndex: 0,
    pageSize: 10,
  });
  const sortableId = React.useId();
  const sensors = useSensors(useSensor(MouseSensor, {}), useSensor(TouchSensor, {}), useSensor(KeyboardSensor, {}));

  const dataIds = React.useMemo<UniqueIdentifier[]>(() => data?.map(({ id }) => id) || [], [data]);

  const table = useReactTable({
    data,
    columns,
    state: {
      sorting,
      columnVisibility,
      rowSelection,
      columnFilters,
      pagination,
    },
    getRowId: (row) => row.id.toString(),
    enableRowSelection: true,
    onRowSelectionChange: setRowSelection,
    onSortingChange: setSorting,
    onColumnFiltersChange: setColumnFilters,
    onColumnVisibilityChange: setColumnVisibility,
    onPaginationChange: setPagination,
    getCoreRowModel: getCoreRowModel(),
    getFilteredRowModel: getFilteredRowModel(),
    getPaginationRowModel: getPaginationRowModel(),
    getSortedRowModel: getSortedRowModel(),
    getFacetedRowModel: getFacetedRowModel(),
    getFacetedUniqueValues: getFacetedUniqueValues(),
  });

  function handleDragEnd(event: DragEndEvent) {
    const { active, over } = event;
    if (active && over && active.id !== over.id) {
      setData((data) => {
        const oldIndex = dataIds.indexOf(active.id);
        const newIndex = dataIds.indexOf(over.id);
        return arrayMove(data, oldIndex, newIndex);
      });
    }
  }

  return (
    <Tabs defaultValue="outline" className="w-full flex-col justify-start gap-6">
      <div className="flex items-center justify-between px-4 lg:px-6">
        <Label htmlFor="view-selector" className="sr-only">
          View
        </Label>
        <Select defaultValue="outline">
          <SelectTrigger className="flex w-fit @4xl/main:hidden" size="sm" id="view-selector">
            <SelectValue placeholder="Select a view" />
          </SelectTrigger>
          <SelectContent>
            <SelectItem value="outline">Outline</SelectItem>
            <SelectItem value="past-performance">Past Performance</SelectItem>
            <SelectItem value="key-personnel">Key Personnel</SelectItem>
            <SelectItem value="focus-documents">Focus Documents</SelectItem>
          </SelectContent>
        </Select>
        <TabsList className="**:data-[slot=badge]:bg-muted-foreground/30 hidden **:data-[slot=badge]:size-5 **:data-[slot=badge]:rounded-full **:data-[slot=badge]:px-1 @4xl/main:flex">
          <TabsTrigger value="outline">Outline</TabsTrigger>
          <TabsTrigger value="past-performance">
            Past Performance <Badge variant="secondary">3</Badge>
          </TabsTrigger>
          <TabsTrigger value="key-personnel">
            Key Personnel <Badge variant="secondary">2</Badge>
          </TabsTrigger>
          <TabsTrigger value="focus-documents">Focus Documents</TabsTrigger>
        </TabsList>
        <div className="flex items-center gap-2">
          <DropdownMenu>
            <DropdownMenuTrigger asChild>
              <Button variant="outline" size="sm">
                <Columns2 />
                <span className="hidden lg:inline">Customize Columns</span>
                <span className="lg:hidden">Columns</span>
                <ChevronDown />
              </Button>
            </DropdownMenuTrigger>
            <DropdownMenuContent align="end" className="w-56">
              {table
                .getAllColumns()
                .filter((column) => typeof column.accessorFn !== "undefined" && column.getCanHide())
                .map((column) => {
                  return (
                    <DropdownMenuCheckboxItem
                      key={column.id}
                      className="capitalize"
                      checked={column.getIsVisible()}
                      onCheckedChange={(value) => column.toggleVisibility(!!value)}
                    >
                      {column.id}
                    </DropdownMenuCheckboxItem>
                  );
                })}
            </DropdownMenuContent>
          </DropdownMenu>
          <Button variant="outline" size="sm">
            <Plus />
            <span className="hidden lg:inline">Add Section</span>
          </Button>
        </div>
      </div>
      <TabsContent value="outline" className="relative flex flex-col gap-4 overflow-auto px-4 lg:px-6">
        <div className="overflow-hidden rounded-lg border">
          <DndContext
            collisionDetection={closestCenter}
            modifiers={[restrictToVerticalAxis]}
            onDragEnd={handleDragEnd}
            sensors={sensors}
            id={sortableId}
          >
            <Table>
              <TableHeader className="bg-muted sticky top-0 z-10">
                {table.getHeaderGroups().map((headerGroup) => (
                  <TableRow key={headerGroup.id}>
                    {headerGroup.headers.map((header) => {
                      return (
                        <TableHead key={header.id} colSpan={header.colSpan}>
                          {header.isPlaceholder
                            ? null
                            : flexRender(header.column.columnDef.header, header.getContext())}
                        </TableHead>
                      );
                    })}
                  </TableRow>
                ))}
              </TableHeader>
              <TableBody className="**:data-[slot=table-cell]:first:w-8">
                {table.getRowModel().rows?.length ? (
                  <SortableContext items={dataIds} strategy={verticalListSortingStrategy}>
                    {table.getRowModel().rows.map((row) => (
                      <DraggableRow key={row.id} row={row} />
                    ))}
                  </SortableContext>
                ) : (
                  <TableRow>
                    <TableCell colSpan={columns.length} className="h-24 text-center">
                      No results.
                    </TableCell>
                  </TableRow>
                )}
              </TableBody>
            </Table>
          </DndContext>
        </div>
        <div className="flex items-center justify-between px-4">
          <div className="text-muted-foreground hidden flex-1 text-sm lg:flex">
            {table.getFilteredSelectedRowModel().rows.length} of {table.getFilteredRowModel().rows.length} row(s)
            selected.
          </div>
          <div className="flex w-full items-center gap-8 lg:w-fit">
            <div className="hidden items-center gap-2 lg:flex">
              <Label htmlFor="rows-per-page" className="text-sm font-medium">
                Rows per page
              </Label>
              <Select
                value={`${table.getState().pagination.pageSize}`}
                onValueChange={(value) => {
                  table.setPageSize(Number(value));
                }}
              >
                <SelectTrigger size="sm" className="w-20" id="rows-per-page">
                  <SelectValue placeholder={table.getState().pagination.pageSize} />
                </SelectTrigger>
                <SelectContent side="top">
                  {[10, 20, 30, 40, 50].map((pageSize) => (
                    <SelectItem key={pageSize} value={`${pageSize}`}>
                      {pageSize}
                    </SelectItem>
                  ))}
                </SelectContent>
              </Select>
            </div>
            <div className="flex w-fit items-center justify-center text-sm font-medium">
              Page {table.getState().pagination.pageIndex + 1} of {table.getPageCount()}
            </div>
            <div className="ml-auto flex items-center gap-2 lg:ml-0">
              <Button
                variant="outline"
                className="hidden h-8 w-8 p-0 lg:flex"
                onClick={() => table.setPageIndex(0)}
                disabled={!table.getCanPreviousPage()}
              >
                <span className="sr-only">Go to first page</span>
                <ChevronsLeft />
              </Button>
              <Button
                variant="outline"
                className="size-8"
                size="icon"
                onClick={() => table.previousPage()}
                disabled={!table.getCanPreviousPage()}
              >
                <span className="sr-only">Go to previous page</span>
                <ChevronLeft />
              </Button>
              <Button
                variant="outline"
                className="size-8"
                size="icon"
                onClick={() => table.nextPage()}
                disabled={!table.getCanNextPage()}
              >
                <span className="sr-only">Go to next page</span>
                <ChevronRight />
              </Button>
              <Button
                variant="outline"
                className="hidden size-8 lg:flex"
                size="icon"
                onClick={() => table.setPageIndex(table.getPageCount() - 1)}
                disabled={!table.getCanNextPage()}
              >
                <span className="sr-only">Go to last page</span>
                <ChevronsRight />
              </Button>
            </div>
          </div>
        </div>
      </TabsContent>
      <TabsContent value="past-performance" className="flex flex-col px-4 lg:px-6">
        <div className="aspect-video w-full flex-1 rounded-lg border border-dashed"></div>
      </TabsContent>
      <TabsContent value="key-personnel" className="flex flex-col px-4 lg:px-6">
        <div className="aspect-video w-full flex-1 rounded-lg border border-dashed"></div>
      </TabsContent>
      <TabsContent value="focus-documents" className="flex flex-col px-4 lg:px-6">
        <div className="aspect-video w-full flex-1 rounded-lg border border-dashed"></div>
      </TabsContent>
    </Tabs>
  );
}

const chartData = [
  { month: "January", desktop: 186, mobile: 80 },
  { month: "February", desktop: 305, mobile: 200 },
  { month: "March", desktop: 237, mobile: 120 },
  { month: "April", desktop: 73, mobile: 190 },
  { month: "May", desktop: 209, mobile: 130 },
  { month: "June", desktop: 214, mobile: 140 },
];

const chartConfig = {
  desktop: {
    label: "Desktop",
    color: "var(--primary)",
  },
  mobile: {
    label: "Mobile",
    color: "var(--primary)",
  },
} satisfies ChartConfig;

function TableCellViewer({ item }: { item: z.infer<typeof schema> }) {
  const isMobile = useIsMobile();

  return (
    <Drawer direction={isMobile ? "bottom" : "right"}>
      <DrawerTrigger asChild>
        <Button variant="link" className="text-foreground w-fit px-0 text-left">
          {item.header}
        </Button>
      </DrawerTrigger>
      <DrawerContent>
        <DrawerHeader className="gap-1">
          <DrawerTitle>{item.header}</DrawerTitle>
          <DrawerDescription>Showing total visitors for the last 6 months</DrawerDescription>
        </DrawerHeader>
        <div className="flex flex-col gap-4 overflow-y-auto px-4 text-sm">
          {!isMobile && (
            <>
              <ChartContainer config={chartConfig}>
                <AreaChart
                  accessibilityLayer
                  data={chartData}
                  margin={{
                    left: 0,
                    right: 10,
                  }}
                >
                  <CartesianGrid vertical={false} />
                  <XAxis
                    dataKey="month"
                    tickLine={false}
                    axisLine={false}
                    tickMargin={8}
                    tickFormatter={(value) => value.slice(0, 3)}
                    hide
                  />
                  <ChartTooltip cursor={false} content={<ChartTooltipContent indicator="dot" />} />
                  <Area
                    dataKey="mobile"
                    type="natural"
                    fill="var(--color-mobile)"
                    fillOpacity={0.6}
                    stroke="var(--color-mobile)"
                    stackId="a"
                  />
                  <Area
                    dataKey="desktop"
                    type="natural"
                    fill="var(--color-desktop)"
                    fillOpacity={0.4}
                    stroke="var(--color-desktop)"
                    stackId="a"
                  />
                </AreaChart>
              </ChartContainer>
              <Separator />
              <div className="grid gap-2">
                <div className="flex gap-2 leading-none font-medium">
                  Trending up by 5.2% this month <TrendingUp className="size-4" />
                </div>
                <div className="text-muted-foreground">
                  Showing total visitors for the last 6 months. This is just some random text to test the layout. It
                  spans multiple lines and should wrap around.
                </div>
              </div>
              <Separator />
            </>
          )}
          <form className="flex flex-col gap-4">
            <div className="flex flex-col gap-3">
              <Label htmlFor="header">Header</Label>
              <Input id="header" defaultValue={item.header} />
            </div>
            <div className="grid grid-cols-2 gap-4">
              <div className="flex flex-col gap-3">
                <Label htmlFor="type">Type</Label>
                <Select defaultValue={item.type}>
                  <SelectTrigger id="type" className="w-full">
                    <SelectValue placeholder="Select a type" />
                  </SelectTrigger>
                  <SelectContent>
                    <SelectItem value="Table of Contents">Table of Contents</SelectItem>
                    <SelectItem value="Executive Summary">Executive Summary</SelectItem>
                    <SelectItem value="Technical Approach">Technical Approach</SelectItem>
                    <SelectItem value="Design">Design</SelectItem>
                    <SelectItem value="Capabilities">Capabilities</SelectItem>
                    <SelectItem value="Focus Documents">Focus Documents</SelectItem>
                    <SelectItem value="Narrative">Narrative</SelectItem>
                    <SelectItem value="Cover Page">Cover Page</SelectItem>
                  </SelectContent>
                </Select>
              </div>
              <div className="flex flex-col gap-3">
                <Label htmlFor="status">Status</Label>
                <Select defaultValue={item.status}>
                  <SelectTrigger id="status" className="w-full">
                    <SelectValue placeholder="Select a status" />
                  </SelectTrigger>
                  <SelectContent>
                    <SelectItem value="Done">Done</SelectItem>
                    <SelectItem value="In Progress">In Progress</SelectItem>
                    <SelectItem value="Not Started">Not Started</SelectItem>
                  </SelectContent>
                </Select>
              </div>
            </div>
            <div className="grid grid-cols-2 gap-4">
              <div className="flex flex-col gap-3">
                <Label htmlFor="target">Target</Label>
                <Input id="target" defaultValue={item.target} />
              </div>
              <div className="flex flex-col gap-3">
                <Label htmlFor="limit">Limit</Label>
                <Input id="limit" defaultValue={item.limit} />
              </div>
            </div>
            <div className="flex flex-col gap-3">
              <Label htmlFor="reviewer">Reviewer</Label>
              <Select defaultValue={item.reviewer}>
                <SelectTrigger id="reviewer" className="w-full">
                  <SelectValue placeholder="Select a reviewer" />
                </SelectTrigger>
                <SelectContent>
                  <SelectItem value="Eddie Lake">Eddie Lake</SelectItem>
                  <SelectItem value="Jamik Tashpulatov">Jamik Tashpulatov</SelectItem>
                  <SelectItem value="Emily Whalen">Emily Whalen</SelectItem>
                </SelectContent>
              </Select>
            </div>
          </form>
        </div>
        <DrawerFooter>
          <Button>Submit</Button>
          <DrawerClose asChild>
            <Button variant="outline">Done</Button>
          </DrawerClose>
        </DrawerFooter>
      </DrawerContent>
    </Drawer>
  );
}