// src/views/Company/components/CompanyHeader/SearchBar.js
// 股票搜索栏组件 - 金色主题 + 模糊搜索下拉

import React, { useState, useEffect, useRef } from 'react';
import { useSelector } from 'react-redux';
import {
  Box,
  HStack,
  Input,
  InputGroup,
  InputLeftElement,
  Text,
  VStack,
} from '@chakra-ui/react';
import { SearchIcon } from '@chakra-ui/icons';

/**
 * 股票搜索栏组件（带模糊搜索下拉）
 *
 * @param {Object} props
 * @param {string} props.inputCode - 输入框当前值
 * @param {Function} props.onInputChange - 输入变化回调
 * @param {Function} props.onSearch - 搜索按钮点击回调
 * @param {Function} props.onKeyDown - 键盘事件回调
 */
const SearchBar = ({
  inputCode,
  onInputChange,
  onSearch,
  onKeyDown,
}) => {
  // 下拉状态
  const [showDropdown, setShowDropdown] = useState(false);
  const [filteredStocks, setFilteredStocks] = useState([]);
  const containerRef = useRef(null);

  // 从 Redux 获取全部股票列表
  const allStocks = useSelector(state => state.stock.allStocks);

  // 模糊搜索过滤
  useEffect(() => {
    if (inputCode && inputCode.trim()) {
      const searchTerm = inputCode.trim().toLowerCase();
      const filtered = allStocks.filter(stock =>
        stock.code.toLowerCase().includes(searchTerm) ||
        stock.name.includes(inputCode.trim())
      ).slice(0, 10); // 限制显示10条
      setFilteredStocks(filtered);
      setShowDropdown(filtered.length > 0);
    } else {
      setFilteredStocks([]);
      setShowDropdown(false);
    }
  }, [inputCode, allStocks]);

  // 点击外部关闭下拉
  useEffect(() => {
    const handleClickOutside = (event) => {
      if (containerRef.current && !containerRef.current.contains(event.target)) {
        setShowDropdown(false);
      }
    };

    document.addEventListener('mousedown', handleClickOutside);
    return () => document.removeEventListener('mousedown', handleClickOutside);
  }, []);

  // 选择股票 - 直接触发搜索跳转
  const handleSelectStock = (stock) => {
    onInputChange(stock.code);
    setShowDropdown(false);
    onSearch(stock.code);
  };

  // 处理键盘事件
  const handleKeyDownWrapper = (e) => {
    if (e.key === 'Enter') {
      setShowDropdown(false);
    }
    onKeyDown?.(e);
  };

  return (
    <Box ref={containerRef} position="relative" w="300px">
      <InputGroup size="lg">
        <InputLeftElement pointerEvents="none">
          <SearchIcon color="#C9A961" />
        </InputLeftElement>
        <Input
          placeholder="输入股票代码或名称"
          value={inputCode}
          onChange={(e) => onInputChange(e.target.value)}
          onKeyDown={handleKeyDownWrapper}
          onFocus={() => inputCode && filteredStocks.length > 0 && setShowDropdown(true)}
          borderRadius="md"
          color="white"
          borderColor="#C9A961"
          _placeholder={{ color: '#C9A961' }}
          _focus={{
            borderColor: '#F4D03F',
            boxShadow: '0 0 0 1px #F4D03F',
          }}
          _hover={{
            borderColor: '#F4D03F',
          }}
        />
      </InputGroup>

      {/* 模糊搜索下拉列表 */}
      {showDropdown && (
        <Box
          position="absolute"
          top="100%"
          left={0}
          mt={1}
          w="100%"
          bg="#1A202C"
          border="1px solid #C9A961"
          borderRadius="md"
          maxH="300px"
          overflowY="auto"
          zIndex={1000}
          boxShadow="0 4px 12px rgba(0, 0, 0, 0.3)"
        >
          <VStack align="stretch" spacing={0}>
            {filteredStocks.map((stock) => (
              <Box
                key={stock.code}
                px={4}
                py={2}
                cursor="pointer"
                _hover={{ bg: 'whiteAlpha.100' }}
                onClick={() => handleSelectStock(stock)}
                borderBottom="1px solid"
                borderColor="whiteAlpha.100"
                _last={{ borderBottom: 'none' }}
              >
                <HStack justify="space-between">
                  <Text color="#F4D03F" fontWeight="bold" fontSize="sm">
                    {stock.code}
                  </Text>
                  <Text color="#C9A961" fontSize="sm" noOfLines={1} maxW="180px">
                    {stock.name}
                  </Text>
                </HStack>
              </Box>
            ))}
          </VStack>
        </Box>
      )}
    </Box>
  );
};

export default SearchBar;