import { useRouter } from 'next/router';
import { useEffect, useState } from 'react';
import { toast } from 'react-hot-toast';
import {
  EllipsisVerticalIcon,
  MagnifyingGlassIcon,
} from '@heroicons/react/24/outline';
import useAuth from '@/core/hooks/useAuth';

import {
  downloadPurchaseOrder,
  downloadQuotation,
} from '../utils/transactions';
import useTransactions from '../hooks/useTransactions';
import currencyFormat from '@/core/utils/currencyFormat';
import cancelTransactionApi from '../api/cancelTransactionApi';
import TransactionStatusBadge from './TransactionStatusBadge';
import Spinner from '@/core/components/elements/Spinner/Spinner';
import Link from '@/core/components/elements/Link/Link';
import BottomPopup from '@/core/components/elements/Popup/BottomPopup';
import Pagination from '@/core/components/elements/Pagination/Pagination';
import { toQuery } from 'lodash-contrib';
import _ from 'lodash';
import Alert from '@/core/components/elements/Alert/Alert';
import MobileView from '@/core/components/views/MobileView';
import DesktopView from '@/core/components/views/DesktopView';
import Menu from '@/lib/auth/components/Menu';
import * as XLSX from 'xlsx';
import getSite from '../api/listSiteApi';
import transactionsApi from '../api/transactionsApi';

const Transactions = ({ context = '' }) => {
  const auth = useAuth();
  const router = useRouter();
  const { q = '', page = 1, site = null } = router.query;

  const limit = 15;

  const [inputQuery, setInputQuery] = useState(q);
  const [toOthers, setToOthers] = useState(null);
  const [toCancel, setToCancel] = useState(null);
  const [listSites, setListSites] = useState([]);

  const [siteFilter, setSiteFilter] = useState(site);

  const query = {
    name: q,
    offset: (page - 1) * limit,
    context,
    limit,
    site:
      siteFilter || (auth?.webRole === null && auth?.site ? auth.site : null),
  };

  const { transactions } = useTransactions({ query });

  const fetchSite = async () => {
    const site = await getSite();
    setListSites(site.sites);
  };

  const submitCancelTransaction = async () => {
    const isCancelled = await cancelTransactionApi({
      transaction: toCancel,
    });
    if (isCancelled) {
      toast.success('Berhasil batalkan transaksi');
      transactions.refetch();
    }
    setToCancel(null);
  };

  const pageCount = Math.ceil(transactions?.data?.saleOrderTotal / limit);
  let pageQuery = _.omit(query, ['limit', 'offset', 'context']);
  pageQuery = _.pickBy(
    pageQuery,
    (value, key) => value !== '' && !(key === 'page' && value === '1')
  );
  pageQuery = toQuery(pageQuery);

  const handleSubmit = (e) => {
    e.preventDefault();
    const queryParams = {};
    if (inputQuery) queryParams.q = inputQuery;
    if (siteFilter) queryParams.site = siteFilter;
    router.push({
      pathname: router.pathname,
      query: queryParams,
    });
  };

  const handleSiteFilterChange = (e) => {
    setSiteFilter(e.target.value);
    const queryParams = {};
    if (inputQuery) queryParams.q = inputQuery;
    if (e.target.value) queryParams.site = e.target.value;
    router.push({
      pathname: router.pathname,
      query: queryParams,
    });
  };

  const exportToExcel = (data, siteFilter) => {
    const fieldsToExport = [
      'No. Transaksi',
      'No. PO',
      'Tanggal',
      'Created By',
      'Salesperson',
      'Total',
      'Status',
    ];
    const rowsToExport = [];

    data.forEach((saleOrder) => {
      const row = {
        'No. Transaksi': saleOrder.name,
        'No. PO': saleOrder.purchaseOrderName || '-',
        Tanggal: saleOrder.dateOrder || '-',
        'Created By': saleOrder.address.customer?.name || '-',
        Salesperson: saleOrder.sales,
        Total: currencyFormat(saleOrder.amountTotal),
        Status: saleOrder.status,
      };
      if (siteFilter) {
        row['Site'] = siteFilter;
      }
      rowsToExport.push(row);
    });

    const worksheet = XLSX.utils.json_to_sheet(rowsToExport, {
      header: fieldsToExport,
    });

    const workbook = XLSX.utils.book_new();
    XLSX.utils.book_append_sheet(workbook, worksheet, 'Sheet1');
    XLSX.writeFile(workbook, 'transactions.xlsx');
  };

  const getAllData = async () => {
    const query = {
      name: q,
      context,
      site:
        siteFilter || (auth?.webRole === null && auth?.site ? auth.site : null),
    };
    const queryString = toQuery(query)
    const data = await transactionsApi({ query: queryString });
    return data;
  };

  const handleExportExcel = async () => {
    const dataToExport = await getAllData();

    exportToExcel(dataToExport?.saleOrders, siteFilter);
  };

  useEffect(() => {
    fetchSite();
  }, []);
  return (
    <>
      <MobileView>
        <div className='p-4 flex flex-col gap-y-4'>
          <form className='flex gap-x-3' onSubmit={handleSubmit}>
            <input
              type='text'
              className='form-input'
              placeholder='Cari Transaksi...'
              value={inputQuery}
              onChange={(e) => setInputQuery(e.target.value)}
            />
            <button className='btn-light bg-transparent px-3' type='submit'>
              <MagnifyingGlassIcon className='w-6' />
            </button>
          </form>

          {transactions.isLoading && (
            <div className='flex justify-center my-4'>
              <Spinner className='w-6 text-gray_r-12/50 fill-gray_r-12' />
            </div>
          )}

          {!transactions.isLoading &&
            transactions.data?.saleOrders?.length === 0 && (
              <Alert type='info' className='text-center'>
                Tidak ada transaksi
              </Alert>
            )}

          {transactions.data?.saleOrders?.map((saleOrder, index) => (
            <div
              className='p-4 shadow border border-gray_r-3 rounded-md'
              key={index}
            >
              <div className='grid grid-cols-2'>
                <Link href={`${router.pathname}/${saleOrder.id}`}>
                  <span className='text-caption-2 text-gray_r-11'>
                    No. Transaksi
                  </span>
                  <h2 className='text-danger-500 mt-1'>{saleOrder.name}</h2>
                </Link>
                <div className='flex gap-x-1 justify-end'>
                  <TransactionStatusBadge status={saleOrder.status} />
                  <EllipsisVerticalIcon
                    className='w-5 h-5'
                    onClick={() => setToOthers(saleOrder)}
                  />
                </div>
              </div>
              <Link href={`${router.pathname}/${saleOrder.id}`}>
                <div className='grid grid-cols-2 mt-3'>
                  <div>
                    <span className='text-caption-2 text-gray_r-11'>
                      No. Purchase Order
                    </span>
                    <p className='mt-1 font-medium text-gray_r-12'>
                      {saleOrder.purchaseOrderName || '-'}
                    </p>
                  </div>
                  <div className='text-right'>
                    <span className='text-caption-2 text-gray_r-11'>
                      Total Invoice
                    </span>
                    <p className='mt-1 font-medium text-gray_r-12'>
                      {saleOrder.invoiceCount} Invoice
                    </p>
                  </div>
                </div>
                <div className='grid grid-cols-2 mt-3'>
                  <div>
                    <span className='text-caption-2 text-gray_r-11'>Sales</span>
                    <p className='mt-1 font-medium text-gray_r-12'>
                      {saleOrder.sales}
                    </p>
                  </div>
                  <div className='text-right'>
                    <span className='text-caption-2 text-gray_r-11'>
                      Total Harga
                    </span>
                    <p className='mt-1 font-medium text-gray_r-12'>
                      {currencyFormat(saleOrder.amountTotal)}
                    </p>
                  </div>
                </div>
              </Link>
            </div>
          ))}

          <Pagination
            pageCount={pageCount}
            currentPage={parseInt(page)}
            url={router.pathname + pageQuery}
            className='mt-2 mb-2'
          />

          <BottomPopup
            title='Lainnya'
            active={toOthers}
            close={() => setToOthers(null)}
          >
            <div className='flex flex-col gap-y-4 mt-2'>
              <button
                className='text-left disabled:opacity-60'
                disabled={!toOthers?.purchaseOrderFile}
                onClick={() => {
                  downloadPurchaseOrder(toOthers);
                  setToOthers(null);
                }}
              >
                Download PO
              </button>
              <button
                className='text-left disabled:opacity-60'
                disabled={toOthers?.status != 'draft'}
                onClick={() => {
                  downloadQuotation(toOthers);
                  setToOthers(null);
                }}
              >
                Download Quotation
              </button>
              <button
                className='text-left disabled:opacity-60'
                disabled={toOthers?.status != 'waiting'}
                onClick={() => {
                  setToCancel(toOthers);
                  setToOthers(null);
                }}
              >
                Batalkan Transaksi
              </button>
            </div>
          </BottomPopup>

          <BottomPopup
            active={toCancel}
            close={() => setToCancel(null)}
            title='Batalkan Transaksi'
          >
            <div className='leading-7 text-gray_r-12/80'>
              Apakah anda yakin membatalkan transaksi{' '}
              <span className='underline'>{toCancel?.name}</span>?
            </div>
            <div className='flex mt-6 gap-x-4'>
              <button
                className='btn-solid-red flex-1'
                type='button'
                onClick={submitCancelTransaction}
              >
                Ya, Batalkan
              </button>
              <button
                className='btn-light flex-1'
                type='button'
                onClick={() => setToCancel(null)}
              >
                Batal
              </button>
            </div>
          </BottomPopup>
        </div>
      </MobileView>

      <DesktopView>
        <div className='container mx-auto flex py-10'>
          <div className='w-3/12 pr-4'>
            <Menu />
          </div>
          <div className='w-9/12 p-4 bg-white border border-gray_r-6 rounded'>
            <div className='flex mb-6 items-center justify-between'>
              <h1 className='text-title-sm font-semibold'>
                Daftar Transaksi{' '}
                {transactions?.data?.saleOrders
                  ? `(${transactions?.data?.saleOrders.length})`
                  : ''}
              </h1>
              <div className='grid grid-cols-2 gap-2'>
                {listSites?.length > 0 ? (
                  <select
                    value={siteFilter}
                    onChange={handleSiteFilterChange}
                    className='form-input'
                  >
                    <option value=''>Pilih Site</option>
                    {listSites.map((site) => (
                      <option value={site} key={site}>
                        {site}
                      </option>
                    ))}
                  </select>
                ) : (<div></div>)}

                <form className='flex gap-x-1' onSubmit={handleSubmit}>
                  <input
                    type='text'
                    className='form-input'
                    placeholder='Cari Transaksi...'
                    value={inputQuery}
                    onChange={(e) => setInputQuery(e.target.value)}
                  />
                  <button
                    className='btn-light bg-transparent px-3'
                    type='submit'
                  >
                    <MagnifyingGlassIcon className='w-6' />
                  </button>
                </form>
              </div>
            </div>
            <button
              onClick={handleExportExcel}
              type='button'
              className='btn-solid-red px-3 py-2 mr-auto mb-2'
            >
              <span>Download</span>
            </button>
            <table className='table-data'>
              <thead>
                <tr>
                  <th>No. Transaksi</th>
                  <th>No. PO</th>
                  <th>Tanggal</th>
                  <th>Created By</th>
                  {auth?.feature?.soApproval && (
                    <th>Site</th>
                  )}
                  <th className='!text-left'>Salesperson</th>
                  <th className='!text-left'>Total</th>
                  <th>Status</th>
                </tr>
              </thead>
              <tbody>
                {transactions.isLoading && (
                  <tr>
                    <td colSpan={7}>
                      <div className='flex justify-center my-2'>
                        <Spinner className='w-6 text-gray_r-12/50 fill-gray_r-12' />
                      </div>
                    </td>
                  </tr>
                )}
                {!transactions.isLoading &&
                  (!transactions?.data?.saleOrders ||
                    transactions?.data?.saleOrders?.length == 0) && (
                    <tr>
                      <td colSpan={7}>Tidak ada transaksi</td>
                    </tr>
                  )}
                {transactions.data?.saleOrders?.map((saleOrder) => (
                  <tr key={saleOrder.id}>
                    <td>
                      <Link
                        className='whitespace-nowrap'
                        href={`${router.pathname}/${saleOrder.id}`}
                      >
                        {saleOrder.name}
                      </Link>
                    </td>
                    <td>{saleOrder.purchaseOrderName || '-'}</td>
                    <td>{saleOrder.dateOrder || '-'}</td>
                    <td>{saleOrder.address.customer?.name || '-'}</td>
                    {auth?.feature?.soApproval && (
                      <td>{saleOrder.sitePartner || '-'}</td>
                    )}
                    <td className='!text-left'>{saleOrder.sales}</td>
                    <td className='!text-left'>
                      {currencyFormat(saleOrder.amountTotal)}
                    </td>
                    <td>
                      <div className='flex justify-center'>
                        <TransactionStatusBadge status={saleOrder.status} />
                      </div>
                    </td>
                  </tr>
                ))}
              </tbody>
            </table>

            <Pagination
              pageCount={pageCount}
              currentPage={parseInt(page)}
              url={router.pathname + (pageQuery ? `?${pageQuery}` : '')}
              className='mt-2 mb-2'
            />
          </div>
        </div>
      </DesktopView>
    </>
  );
};

export default Transactions;