import type { FormEvent, KeyboardEvent, FocusEvent, MutableRefObject } from "react";
import { StockSearchForm } from "@/features/trade/components/search/StockSearchForm";
import { StockSearchHistory } from "@/features/trade/components/search/StockSearchHistory";
import { StockSearchResults } from "@/features/trade/components/search/StockSearchResults";
import type {
  DashboardStockSearchHistoryItem,
  DashboardStockSearchItem,
} from "@/features/trade/types/trade.types";

interface TradeSearchSectionProps {
  canSearch: boolean;
  isSearchPanelOpen: boolean;
  isSearching: boolean;
  keyword: string;
  selectedSymbol?: string;
  searchResults: DashboardStockSearchItem[];
  searchHistory: DashboardStockSearchHistoryItem[];
  searchShellRef: MutableRefObject<HTMLDivElement | null>;
  onKeywordChange: (value: string) => void;
  onSearchSubmit: (event: FormEvent) => void;
  onSearchFocus: () => void;
  onSearchShellBlur: (event: FocusEvent<HTMLDivElement>) => void;
  onSearchShellKeyDown: (event: KeyboardEvent<HTMLDivElement>) => void;
  onSelectStock: (item: DashboardStockSearchItem) => void;
  onRemoveHistory: (symbol: string) => void;
  onClearHistory: () => void;
}

/**
 * @description 트레이드 화면 상단의 검색 입력/결과/히스토리 드롭다운 영역을 렌더링합니다.
 * @see features/trade/components/TradeContainer.tsx TradeContainer에서 검색 섹션을 분리해 렌더 복잡도를 줄입니다.
 * @see features/trade/hooks/useTradeSearchPanel.ts 패널 열림/닫힘 및 포커스 핸들러를 전달받습니다.
 */
export function TradeSearchSection({
  canSearch,
  isSearchPanelOpen,
  isSearching,
  keyword,
  selectedSymbol,
  searchResults,
  searchHistory,
  searchShellRef,
  onKeywordChange,
  onSearchSubmit,
  onSearchFocus,
  onSearchShellBlur,
  onSearchShellKeyDown,
  onSelectStock,
  onRemoveHistory,
  onClearHistory,
}: TradeSearchSectionProps) {
  return (
    <div className="z-30 flex-none border-b bg-background/95 px-3 py-2 backdrop-blur-sm dark:border-brand-800/45 dark:bg-brand-900/22 sm:px-4">
      {/* ========== SEARCH SHELL ========== */}
      <div
        ref={searchShellRef}
        onBlurCapture={onSearchShellBlur}
        onKeyDownCapture={onSearchShellKeyDown}
        className="relative mx-auto max-w-2xl"
      >
        <StockSearchForm
          keyword={keyword}
          onKeywordChange={onKeywordChange}
          onSubmit={onSearchSubmit}
          onInputFocus={onSearchFocus}
          disabled={!canSearch}
          isLoading={isSearching}
        />

        {/* ========== SEARCH DROPDOWN ========== */}
        {isSearchPanelOpen && canSearch && (
          <div className="absolute left-0 right-0 top-full z-50 mt-1 max-h-80 overflow-x-hidden overflow-y-auto rounded-md border bg-background shadow-lg dark:border-brand-800/45 dark:bg-brand-950/95">
            {searchResults.length > 0 ? (
              <StockSearchResults
                items={searchResults}
                onSelect={onSelectStock}
                selectedSymbol={selectedSymbol}
              />
            ) : keyword.trim() ? (
              <div className="px-3 py-2 text-sm text-muted-foreground">
                {isSearching ? "검색 중..." : "검색 결과가 없습니다."}
              </div>
            ) : searchHistory.length > 0 ? (
              <StockSearchHistory
                items={searchHistory}
                onSelect={onSelectStock}
                onRemove={onRemoveHistory}
                onClear={onClearHistory}
                selectedSymbol={selectedSymbol}
              />
            ) : (
              <div className="px-3 py-2 text-sm text-muted-foreground">
                최근 검색 종목이 없습니다.
              </div>
            )}
          </div>
        )}
      </div>
    </div>
  );
}