'use client';

import { Fragment, ReactNode, useEffect, useSyncExternalStore } from 'react';
import { createPortal } from 'react-dom';

interface ModalProps {
  isOpen: boolean;
  onClose: () => void;
  title?: string;
  children: ReactNode;
  size?: 'sm' | 'md' | 'lg' | 'xl';
}

const sizeStyles = {
  sm: 'max-w-sm',
  md: 'max-w-md',
  lg: 'max-w-lg',
  xl: 'max-w-xl',
};

function subscribe() {
  return () => {};
}

function useIsMounted() {
  return useSyncExternalStore(
    subscribe,
    () => true,
    () => false
  );
}

export function Modal({ isOpen, onClose, title, children, size = 'md' }: ModalProps) {
  const isMounted = useIsMounted();

  useEffect(() => {
    const handleEscape = (e: KeyboardEvent) => {
      if (e.key === 'Escape') onClose();
    };

    if (isOpen) {
      document.addEventListener('keydown', handleEscape);
      document.body.style.overflow = 'hidden';
    }

    return () => {
      document.removeEventListener('keydown', handleEscape);
      document.body.style.overflow = 'unset';
    };
  }, [isOpen, onClose]);

  if (!isMounted || !isOpen) return null;

  return createPortal(
    <Fragment>
      {/* Backdrop */}
      <div
        className="fixed inset-0 z-50 bg-black/50 backdrop-blur-sm"
        onClick={onClose}
        aria-hidden="true"
      />

      {/* Modal */}
      <div className="fixed inset-0 z-50 flex items-center justify-center p-4">
        <div
          className={`
            w-full ${sizeStyles[size]} rounded-xl border border-border
            bg-card shadow-xl
            animate-in fade-in-0 zoom-in-95
          `}
          role="dialog"
          aria-modal="true"
          aria-labelledby={title ? 'modal-title' : undefined}
          onClick={(e) => e.stopPropagation()}
        >
          {/* Header */}
          {title && (
            <div className="flex items-center justify-between border-b border-border px-6 py-4">
              <h2 id="modal-title" className="text-lg font-semibold text-foreground">
                {title}
              </h2>
              <button
                onClick={onClose}
                className="rounded-lg p-1 text-muted hover:bg-card-hover hover:text-foreground transition-colors"
                aria-label="Fermer"
              >
                <svg
                  className="h-5 w-5"
                  fill="none"
                  viewBox="0 0 24 24"
                  stroke="currentColor"
                >
                  <path
                    strokeLinecap="round"
                    strokeLinejoin="round"
                    strokeWidth={2}
                    d="M6 18L18 6M6 6l12 12"
                  />
                </svg>
              </button>
            </div>
          )}

          {/* Content */}
          <div className="p-6">{children}</div>
        </div>
      </div>
    </Fragment>,
    document.body
  );
}

interface ModalFooterProps {
  children: ReactNode;
}

export function ModalFooter({ children }: ModalFooterProps) {
  return (
    <div className="flex items-center justify-end gap-3 border-t border-border -mx-6 -mb-6 mt-6 px-6 py-4 bg-card-hover/50 rounded-b-xl">
      {children}
    </div>
  );
}