'use client';

import { useEffect, useState, useRef } from 'react';
import styles from '@/app/home/plugins/plugins.module.css';
import { MCPMarketCardVO } from '@/app/home/plugins/mcp-market/mcp-market-card/MCPMarketCardVO';
import MCPMarketCardComponent from '@/app/home/plugins/mcp-market/mcp-market-card/MCPMarketCardComponent';
import { spaceClient } from '@/app/infra/http/HttpClient';
import { useTranslation } from 'react-i18next';
import { Input } from '@/components/ui/input';
import {
  Pagination,
  PaginationContent,
  PaginationItem,
  PaginationLink,
  PaginationNext,
  PaginationPrevious,
} from '@/components/ui/pagination';
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from '@/components/ui/select';

export default function MCPMarketComponent({
  askInstallServer,
}: {
  askInstallServer: (githubURL: string) => void;
}) {
  const { t } = useTranslation();
  const [marketServerList, setMarketServerList] = useState<MCPMarketCardVO[]>(
    [],
  );
  const [totalCount, setTotalCount] = useState(0);
  const [nowPage, setNowPage] = useState(1);
  const [searchKeyword, setSearchKeyword] = useState('');
  const [loading, setLoading] = useState(false);
  const [sortByValue, setSortByValue] = useState<string>('pushed_at');
  const [sortOrderValue, setSortOrderValue] = useState<string>('DESC');
  const searchTimeout = useRef<NodeJS.Timeout | null>(null);
  const pageSize = 12;

  useEffect(() => {
    initData();
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, []);

  function initData() {
    getServerList();
  }

  function onInputSearchKeyword(keyword: string) {
    setSearchKeyword(keyword);

    // 清除之前的定时器
    if (searchTimeout.current) {
      clearTimeout(searchTimeout.current);
    }

    // 设置新的定时器
    searchTimeout.current = setTimeout(() => {
      setNowPage(1);
      getServerList(1, keyword);
    }, 500);
  }

  function getServerList(
    page: number = nowPage,
    keyword: string = searchKeyword,
    sortBy: string = sortByValue,
    sortOrder: string = sortOrderValue,
  ) {
    setLoading(true);
    spaceClient
      .getMCPMarketServers(page, pageSize, keyword, sortBy, sortOrder)
      .then((res) => {
        setMarketServerList(
          res.servers.map((marketServer) => {
            let repository = marketServer.repository;
            if (repository.startsWith('https://github.com/')) {
              repository = repository.replace('https://github.com/', '');
            }

            if (repository.startsWith('github.com/')) {
              repository = repository.replace('github.com/', '');
            }

            const author = repository.split('/')[0];
            const name = repository.split('/')[1];
            return new MCPMarketCardVO({
              author: author,
              description: marketServer.description,
              githubURL: `https://github.com/${repository}`,
              name: name,
              serverId: String(marketServer.ID),
              starCount: marketServer.stars,
              version:
                'version' in marketServer
                  ? String(marketServer.version)
                  : '1.0.0', // 如果没有提供版本，则默认为1.0.0
            });
          }),
        );
        setTotalCount(res.total);
        setLoading(false);
        console.log('market servers:', res);
      })
      .catch((error) => {
        console.error(t('mcp.getServerListError'), error);
        setLoading(false);
      });
  }

  function handlePageChange(page: number) {
    setNowPage(page);
    getServerList(page);
  }

  function handleSortChange(value: string) {
    const [newSortBy, newSortOrder] = value.split(',').map((s) => s.trim());
    setSortByValue(newSortBy);
    setSortOrderValue(newSortOrder);
    setNowPage(1);
    getServerList(1, searchKeyword, newSortBy, newSortOrder);
  }

  return (
    <div className={`${styles.marketComponentBody}`}>
      <div className="flex items-center justify-start mb-2 mt-2 pl-[0.8rem] pr-[0.8rem]">
        <Input
          style={{
            width: '300px',
          }}
          value={searchKeyword}
          placeholder={t('mcp.searchServer')}
          onChange={(e) => onInputSearchKeyword(e.target.value)}
        />

        <Select
          value={`${sortByValue},${sortOrderValue}`}
          onValueChange={handleSortChange}
        >
          <SelectTrigger className="w-[180px] ml-2 cursor-pointer">
            <SelectValue placeholder={t('mcp.sortBy')} />
          </SelectTrigger>
          <SelectContent>
            <SelectItem value="stars,DESC">{t('mcp.mostStars')}</SelectItem>
            <SelectItem value="created_at,DESC">
              {t('mcp.recentlyAdded')}
            </SelectItem>
            <SelectItem value="pushed_at,DESC">
              {t('mcp.recentlyUpdated')}
            </SelectItem>
          </SelectContent>
        </Select>

        <div className="flex items-center justify-end ml-2">
          {totalCount > 0 && (
            <Pagination>
              <PaginationContent>
                <PaginationItem className="cursor-pointer">
                  <PaginationPrevious
                    onClick={() => handlePageChange(nowPage - 1)}
                    className={
                      nowPage <= 1 ? 'pointer-events-none opacity-50' : ''
                    }
                  />
                </PaginationItem>

                {/* 如果总页数大于5，则只显示5页，如果总页数小于5，则显示所有页 */}
                {(() => {
                  const totalPages = Math.ceil(totalCount / pageSize);
                  const maxVisiblePages = 5;
                  let startPage = Math.max(
                    1,
                    nowPage - Math.floor(maxVisiblePages / 2),
                  );
                  const endPage = Math.min(
                    totalPages,
                    startPage + maxVisiblePages - 1,
                  );

                  if (endPage - startPage + 1 < maxVisiblePages) {
                    startPage = Math.max(1, endPage - maxVisiblePages + 1);
                  }

                  return Array.from(
                    { length: endPage - startPage + 1 },
                    (_, i) => {
                      const pageNum = startPage + i;
                      return (
                        <PaginationItem
                          key={pageNum}
                          className="cursor-pointer"
                        >
                          <PaginationLink
                            isActive={pageNum === nowPage}
                            onClick={() => handlePageChange(pageNum)}
                          >
                            <span className="text-black select-none">
                              {pageNum}
                            </span>
                          </PaginationLink>
                        </PaginationItem>
                      );
                    },
                  );
                })()}

                <PaginationItem className="cursor-pointer">
                  <PaginationNext
                    onClick={() => handlePageChange(nowPage + 1)}
                    className={
                      nowPage >= Math.ceil(totalCount / pageSize)
                        ? 'pointer-events-none opacity-50'
                        : ''
                    }
                  />
                </PaginationItem>
              </PaginationContent>
            </Pagination>
          )}
        </div>
      </div>

      <div className={`${styles.pluginListContainer}`}>
        {loading ? (
          <div style={{ textAlign: 'center', padding: '20px' }}>
            {t('mcp.loading')}
          </div>
        ) : marketServerList.length === 0 ? (
          <div style={{ textAlign: 'center', padding: '20px' }}>
            {t('mcp.noMatchingServers')}
          </div>
        ) : (
          marketServerList.map((vo, index) => (
            <div key={`${vo.serverId}-${index}`}>
              <MCPMarketCardComponent
                cardVO={vo}
                installServer={(githubURL) => {
                  askInstallServer(githubURL);
                }}
              />
            </div>
          ))
        )}
      </div>
    </div>
  );
}