'use client';

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

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

const sizes = {
  sm:  'max-w-md',
  md:  'max-w-lg',
  lg:  'max-w-2xl',
  xl:  'max-w-4xl',
};

export default function Modal({ isOpen, onClose, title, children, size = 'md', actions }: ModalProps) {
  useEffect(() => {
    if (!isOpen) return;
    const handler = (e: KeyboardEvent) => { if (e.key === 'Escape') onClose(); };
    document.addEventListener('keydown', handler);
    document.body.style.overflow = 'hidden';
    return () => {
      document.removeEventListener('keydown', handler);
      document.body.style.overflow = '';
    };
  }, [isOpen, onClose]);

  if (!isOpen) return null;

  return createPortal(
    <div className="fixed inset-0 z-50 flex items-center justify-center p-4">
      {/* Backdrop */}
      <div
        className="absolute inset-0 bg-black/60 backdrop-blur-sm"
        onClick={onClose}
      />
      {/* Panel */}
      <div
        className={`relative z-10 w-full ${sizes[size]} rounded-xl border border-border bg-card text-card-foreground shadow-2xl`}
      >
        {/* Header */}
        <div className="flex items-center justify-between border-b border-border px-6 py-4">
          <h2 className="text-lg font-semibold text-foreground">{title}</h2>
          <div className="flex items-center gap-2">
            {actions && <div className="flex gap-2">{actions}</div>}
            <button
              onClick={onClose}
              className="rounded-md p-1.5 text-muted-foreground transition-colors hover:bg-muted hover:text-foreground"
            >
              <svg className="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M6 18L18 6M6 6l12 12" />
              </svg>
            </button>
          </div>
        </div>
        {/* Body */}
        <div className="px-6 py-5">{children}</div>
      </div>
    </div>,
    document.body
  );
}
