import { createContext, useContext, useState, type ReactNode } from 'react';
import { Spinner } from '@/components/ui/spinner';

interface LoadingContextType {
  isLoading: boolean;
  loadingMessage?: string;
  setLoading: (loading: boolean, message?: string) => void;
}

const LoadingContext = createContext<LoadingContextType | undefined>(undefined);

export function LoadingProvider({ children }: { children: ReactNode }) {
  const [isLoading, setIsLoading] = useState(false);
  const [loadingMessage, setLoadingMessage] = useState<string | undefined>();

  const setLoading = (loading: boolean, message?: string) => {
    setIsLoading(loading);
    setLoadingMessage(message);
  };

  return (
    <LoadingContext.Provider value={{ isLoading, loadingMessage, setLoading }}>
      {children}
      {isLoading && (
        <div className="fixed inset-0 z-9999 flex items-center justify-center bg-black/50 backdrop-blur-sm">
          <div className="bg-panelLight dark:bg-panelDark flex flex-col items-center gap-4 rounded-xl border p-6 shadow-xl">
            <Spinner size={32} />
            <div className="text-center">
              <p className="text-sm font-medium text-black dark:text-white">
                {loadingMessage || 'Loading...'}
              </p>
            </div>
          </div>
        </div>
      )}
    </LoadingContext.Provider>
  );
}

export function useLoading() {
  const context = useContext(LoadingContext);
  if (!context) {
    throw new Error('useLoading must be used within a LoadingProvider');
  }
  return context;
}