/* eslint-disable jsx-a11y/no-onchange */
"use client";

import {
  Table,
  TableHeader,
  TableColumn,
  TableBody,
  TableRow,
  TableCell,
  Input,
  Button,
  DropdownTrigger,
  Dropdown,
  DropdownMenu,
  DropdownItem,
  Selection,
  Chip,
  User,
  ChipProps,
  Pagination,
  SortDescriptor,
} from "@nextui-org/react";
import {ChevronDownIcon, SearchIcon} from "@nextui-org/shared-icons";
import {useCallback, useMemo, useState} from "react";
import {capitalize} from "lodash";

import {PlusLinearIcon} from "@/components/icons";
import {VerticalDotsIcon} from "@/components/icons/vertical-dots";

const statusColorMap: Record<string, ChipProps["color"]> = {
  active: "success",
  paused: "danger",
  vacation: "warning",
};

const columns = [
  {name: "ID", uid: "id", sortable: true},
  {name: "NAME", uid: "name", sortable: true},
  {name: "AGE", uid: "age", sortable: true},
  {name: "ROLE", uid: "role", sortable: true},
  {name: "TEAM", uid: "team"},
  {name: "EMAIL", uid: "email"},
  {name: "STATUS", uid: "status", sortable: true},
  {name: "ACTIONS", uid: "actions"},
];

const statusOptions = [
  {name: "Active", uid: "active"},
  {name: "Paused", uid: "paused"},
  {name: "Vacation", uid: "vacation"},
];

const INITIAL_VISIBLE_COLUMNS = ["name", "role", "status", "actions"];

const users = [
  {
    id: 1,
    name: "Tony Reichert",
    role: "CEO",
    team: "Management",
    status: "active",
    age: "29",
    avatar: "https://i.pravatar.cc/150?u=a042581f4e29026024d",
    email: "tony.reichert@example.com",
  },
  {
    id: 2,
    name: "Zoey Lang",
    role: "Tech Lead",
    team: "Development",
    status: "paused",
    age: "25",
    avatar: "https://i.pravatar.cc/150?u=a042581f4e29026704d",
    email: "zoey.lang@example.com",
  },
  {
    id: 3,
    name: "Jane Fisher",
    role: "Sr. Dev",
    team: "Development",
    status: "active",
    age: "22",
    avatar: "https://i.pravatar.cc/150?u=a04258114e29026702d",
    email: "jane.fisher@example.com",
  },
  {
    id: 4,
    name: "William Howard",
    role: "C.M.",
    team: "Marketing",
    status: "vacation",
    age: "28",
    avatar: "https://i.pravatar.cc/150?u=a048581f4e29026701d",
    email: "william.howard@example.com",
  },
  {
    id: 5,
    name: "Kristen Copper",
    role: "S. Manager",
    team: "Sales",
    status: "active",
    age: "24",
    avatar: "https://i.pravatar.cc/150?u=a092581d4ef9026700d",
    email: "kristen.cooper@example.com",
  },
  {
    id: 6,
    name: "Brian Kim",
    role: "P. Manager",
    team: "Management",
    age: "29",
    avatar: "https://i.pravatar.cc/150?u=a042581f4e29026024d",
    email: "brian.kim@example.com",
    status: "Active",
  },
  {
    id: 7,
    name: "Michael Hunt",
    role: "Designer",
    team: "Design",
    status: "paused",
    age: "27",
    avatar: "https://i.pravatar.cc/150?u=a042581f4e29027007d",
    email: "michael.hunt@example.com",
  },
  {
    id: 8,
    name: "Samantha Brooks",
    role: "HR Manager",
    team: "HR",
    status: "active",
    age: "31",
    avatar: "https://i.pravatar.cc/150?u=a042581f4e27027008d",
    email: "samantha.brooks@example.com",
  },
  {
    id: 9,
    name: "Frank Harrison",
    role: "F. Manager",
    team: "Finance",
    status: "vacation",
    age: "33",
    avatar: "https://i.pravatar.cc/150?img=4",
    email: "frank.harrison@example.com",
  },
  {
    id: 10,
    name: "Emma Adams",
    role: "Ops Manager",
    team: "Operations",
    status: "active",
    age: "35",
    avatar: "https://i.pravatar.cc/150?img=5",
    email: "emma.adams@example.com",
  },
  {
    id: 11,
    name: "Brandon Stevens",
    role: "Jr. Dev",
    team: "Development",
    status: "active",
    age: "22",
    avatar: "https://i.pravatar.cc/150?img=8",
    email: "brandon.stevens@example.com",
  },
  {
    id: 12,
    name: "Megan Richards",
    role: "P. Manager",
    team: "Product",
    status: "paused",
    age: "28",
    avatar: "https://i.pravatar.cc/150?img=10",
    email: "megan.richards@example.com",
  },
  {
    id: 13,
    name: "Oliver Scott",
    role: "S. Manager",
    team: "Security",
    status: "active",
    age: "37",
    avatar: "https://i.pravatar.cc/150?img=12",
    email: "oliver.scott@example.com",
  },
  {
    id: 14,
    name: "Grace Allen",
    role: "M. Specialist",
    team: "Marketing",
    status: "active",
    age: "30",
    avatar: "https://i.pravatar.cc/150?img=16",
    email: "grace.allen@example.com",
  },
  {
    id: 15,
    name: "Noah Carter",
    role: "IT Specialist",
    team: "I. Technology",
    status: "paused",
    age: "31",
    avatar: "https://i.pravatar.cc/150?img=15",
    email: "noah.carter@example.com",
  },
  {
    id: 16,
    name: "Ava Perez",
    role: "Manager",
    team: "Sales",
    status: "active",
    age: "29",
    avatar: "https://i.pravatar.cc/150?img=20",
    email: "ava.perez@example.com",
  },
  {
    id: 17,
    name: "Liam Johnson",
    role: "Data Analyst",
    team: "Analysis",
    status: "active",
    age: "28",
    avatar: "https://i.pravatar.cc/150?img=33",
    email: "liam.johnson@example.com",
  },
  {
    id: 18,
    name: "Sophia Taylor",
    role: "QA Analyst",
    team: "Testing",
    status: "active",
    age: "27",
    avatar: "https://i.pravatar.cc/150?img=29",
    email: "sophia.taylor@example.com",
  },
  {
    id: 19,
    name: "Lucas Harris",
    role: "Administrator",
    team: "Information Technology",
    status: "paused",
    age: "32",
    avatar: "https://i.pravatar.cc/150?img=50",
    email: "lucas.harris@example.com",
  },
  {
    id: 20,
    name: "Mia Robinson",
    role: "Coordinator",
    team: "Operations",
    status: "active",
    age: "26",
    avatar: "https://i.pravatar.cc/150?img=45",
    email: "mia.robinson@example.com",
  },
];

type User = (typeof users)[number];

export default function Page() {
  const [filterValue, setFilterValue] = useState("");
  const [selectedKeys, setSelectedKeys] = useState<Selection>(new Set([]));
  const [visibleColumns, setVisibleColumns] = useState<Selection>(new Set(INITIAL_VISIBLE_COLUMNS));
  const [statusFilter, setStatusFilter] = useState<Selection>("all");
  const [rowsPerPage, setRowsPerPage] = useState(5);
  const [sortDescriptor, setSortDescriptor] = useState<SortDescriptor>({
    column: "age",
    direction: "ascending",
  });

  const [page, setPage] = useState(1);

  const pages = Math.ceil(users.length / rowsPerPage);

  const hasSearchFilter = Boolean(filterValue);

  const headerColumns = useMemo(() => {
    if (visibleColumns === "all") return columns;

    return columns.filter((column) => Array.from(visibleColumns).includes(column.uid));
  }, [visibleColumns]);

  const filteredItems = useMemo(() => {
    let filteredUsers = [...users];

    if (hasSearchFilter) {
      filteredUsers = filteredUsers.filter((user) =>
        user.name.toLowerCase().includes(filterValue.toLowerCase()),
      );
    }
    if (statusFilter !== "all" && Array.from(statusFilter).length !== statusOptions.length) {
      filteredUsers = filteredUsers.filter((user) =>
        Array.from(statusFilter).includes(user.status),
      );
    }

    return filteredUsers;
  }, [users, filterValue, statusFilter]);

  const items = useMemo(() => {
    const start = (page - 1) * rowsPerPage;
    const end = start + rowsPerPage;

    return filteredItems.slice(start, end);
  }, [page, filteredItems, rowsPerPage]);

  const sortedItems = useMemo(() => {
    return [...items].sort((a: User, b: User) => {
      const first = a[sortDescriptor.column as keyof User] as number;
      const second = b[sortDescriptor.column as keyof User] as number;
      const cmp = first < second ? -1 : first > second ? 1 : 0;

      return sortDescriptor.direction === "descending" ? -cmp : cmp;
    });
  }, [sortDescriptor, items]);

  const renderCell = useCallback((user: User, columnKey: React.Key) => {
    const cellValue = user[columnKey as keyof User];

    switch (columnKey) {
      case "name":
        return (
          <User
            avatarProps={{radius: "full", size: "sm", src: user.avatar}}
            classNames={{
              description: "text-default-500",
            }}
            description={user.email}
            name={cellValue}
          >
            {user.email}
          </User>
        );
      case "role":
        return (
          <div className="flex flex-col">
            <p className="text-bold text-small capitalize">{cellValue}</p>
            <p className="text-bold text-tiny capitalize text-default-500">{user.team}</p>
          </div>
        );
      case "status":
        return (
          <Chip
            className="capitalize border-none gap-1 text-default-600"
            color={statusColorMap[user.status]}
            size="sm"
            variant="dot"
          >
            {cellValue}
          </Chip>
        );
      case "actions":
        return (
          <div className="relative flex justify-end items-center gap-2">
            <Dropdown className="bg-background border-1 border-default-200">
              <DropdownTrigger>
                <Button isIconOnly radius="full" size="sm" variant="light">
                  <VerticalDotsIcon className="text-default-400" />
                </Button>
              </DropdownTrigger>
              <DropdownMenu>
                <DropdownItem>View</DropdownItem>
                <DropdownItem>Edit</DropdownItem>
                <DropdownItem>Delete</DropdownItem>
              </DropdownMenu>
            </Dropdown>
          </div>
        );
      default:
        return cellValue;
    }
  }, []);

  const onRowsPerPageChange = useCallback((e: React.ChangeEvent<HTMLSelectElement>) => {
    setRowsPerPage(Number(e.target.value));
    setPage(1);
  }, []);

  const onSearchChange = useCallback((value?: string) => {
    if (value) {
      setFilterValue(value);
      setPage(1);
    } else {
      setFilterValue("");
    }
  }, []);

  const topContent = useMemo(() => {
    return (
      <div className="flex flex-col gap-4">
        <div className="flex justify-between gap-3 items-end">
          <Input
            isClearable
            classNames={{
              base: "w-full sm:max-w-[44%]",
              inputWrapper: "border-1",
            }}
            placeholder="Search by name..."
            size="sm"
            startContent={<SearchIcon className="text-default-300" />}
            value={filterValue}
            variant="bordered"
            onClear={() => setFilterValue("")}
            onValueChange={onSearchChange}
          />
          <div className="flex gap-3">
            <Dropdown>
              <DropdownTrigger className="hidden sm:flex">
                <Button
                  endContent={<ChevronDownIcon className="text-small" />}
                  size="sm"
                  variant="flat"
                >
                  Status
                </Button>
              </DropdownTrigger>
              <DropdownMenu
                disallowEmptySelection
                aria-label="Table Columns"
                closeOnSelect={false}
                selectedKeys={statusFilter}
                selectionMode="multiple"
                onSelectionChange={setStatusFilter}
              >
                {statusOptions.map((status) => (
                  <DropdownItem key={status.uid} className="capitalize">
                    {capitalize(status.name)}
                  </DropdownItem>
                ))}
              </DropdownMenu>
            </Dropdown>
            <Dropdown>
              <DropdownTrigger className="hidden sm:flex">
                <Button
                  endContent={<ChevronDownIcon className="text-small" />}
                  size="sm"
                  variant="flat"
                >
                  Columns
                </Button>
              </DropdownTrigger>
              <DropdownMenu
                disallowEmptySelection
                aria-label="Table Columns"
                closeOnSelect={false}
                selectedKeys={visibleColumns}
                selectionMode="multiple"
                onSelectionChange={setVisibleColumns}
              >
                {columns.map((column) => (
                  <DropdownItem key={column.uid} className="capitalize">
                    {capitalize(column.name)}
                  </DropdownItem>
                ))}
              </DropdownMenu>
            </Dropdown>
            <Button
              className="bg-foreground text-background"
              endContent={<PlusLinearIcon />}
              size="sm"
            >
              Add New
            </Button>
          </div>
        </div>
        <div className="flex justify-between items-center">
          <span className="text-default-400 text-small">Total {users.length} users</span>
          <label className="flex items-center text-default-400 text-small">
            Rows per page:
            <select
              className="bg-transparent outline-none text-default-400 text-small"
              onChange={onRowsPerPageChange}
            >
              <option value="5">5</option>
              <option value="10">10</option>
              <option value="15">15</option>
            </select>
          </label>
        </div>
      </div>
    );
  }, [
    filterValue,
    statusFilter,
    visibleColumns,
    onSearchChange,
    onRowsPerPageChange,
    users.length,
    hasSearchFilter,
  ]);

  const bottomContent = useMemo(() => {
    return (
      <div className="py-2 px-2 flex justify-between items-center">
        <Pagination
          showControls
          classNames={{
            cursor: "bg-foreground text-background",
          }}
          color="default"
          isDisabled={hasSearchFilter}
          page={page}
          total={pages}
          variant="light"
          onChange={setPage}
        />
        <span className="text-small text-default-400">
          {selectedKeys === "all"
            ? "All items selected"
            : `${selectedKeys.size} of ${items.length} selected`}
        </span>
      </div>
    );
  }, [selectedKeys, items.length, page, pages, hasSearchFilter]);

  const classNames = useMemo(
    () => ({
      wrapper: ["max-h-[382px]", "max-w-3xl"],
      th: ["bg-transparent", "text-default-500", "border-b", "border-divider"],
      td: [
        // changing the rows border radius
        // first
        "group-data-[first=true]:first:before:rounded-none",
        "group-data-[first=true]:last:before:rounded-none",
        // middle
        "group-data-[middle=true]:before:rounded-none",
        // last
        "group-data-[last=true]:first:before:rounded-none",
        "group-data-[last=true]:last:before:rounded-none",
      ],
    }),
    [],
  );

  return (
    <div className="p-6">
      <Table
        isCompact
        removeWrapper
        aria-label="Example table with custom cells, pagination and sorting"
        bottomContent={bottomContent}
        bottomContentPlacement="outside"
        checkboxesProps={{
          classNames: {
            wrapper: "after:bg-foreground after:text-background text-background",
          },
        }}
        classNames={classNames}
        selectedKeys={selectedKeys}
        selectionMode="multiple"
        sortDescriptor={sortDescriptor}
        topContent={topContent}
        topContentPlacement="outside"
        onSelectionChange={setSelectedKeys}
        onSortChange={setSortDescriptor}
      >
        <TableHeader columns={headerColumns}>
          {(column) => (
            <TableColumn
              key={column.uid}
              align={column.uid === "actions" ? "center" : "start"}
              allowsSorting={column.sortable}
            >
              {column.name}
            </TableColumn>
          )}
        </TableHeader>
        <TableBody emptyContent={"No users found"} items={sortedItems}>
          {(item) => (
            <TableRow key={item.id}>
              {(columnKey) => <TableCell>{renderCell(item, columnKey)}</TableCell>}
            </TableRow>
          )}
        </TableBody>
      </Table>
    </div>
  );
}