'use client';
import { createContext, useCallback, useContext, useEffect, useMemo, useState, type ReactNode } from 'react';

interface Ctx {
  open: boolean;
  setOpen: (v: boolean) => void;
}
const SearchCtx = createContext<Ctx>({ open: false, setOpen: () => {} });

/** Global search state + ⌘K / Ctrl+K / "/" shortcuts. */
export function SearchProvider({ children }: { children: ReactNode }) {
  const [open, setOpen] = useState(false);
  useEffect(() => {
    const onKey = (e: KeyboardEvent) => {
      const target = e.target as HTMLElement | null;
      const typing = target && (target.tagName === 'INPUT' || target.tagName === 'TEXTAREA' || target.isContentEditable);
      if ((e.metaKey || e.ctrlKey) && e.key.toLowerCase() === 'k') {
        e.preventDefault();
        setOpen((o) => !o);
      } else if (e.key === '/' && !typing && !e.metaKey && !e.ctrlKey && !e.altKey) {
        e.preventDefault();
        setOpen(true);
      }
    };
    window.addEventListener('keydown', onKey);
    return () => window.removeEventListener('keydown', onKey);
  }, []);
  const value = useMemo(() => ({ open, setOpen }), [open]);
  return <SearchCtx.Provider value={value}>{children}</SearchCtx.Provider>;
}

export function useSearch() {
  return useContext(SearchCtx);
}

export function useOpenSearch() {
  const { setOpen } = useSearch();
  return useCallback(() => setOpen(true), [setOpen]);
}