"use client";

import { X } from "lucide-react";
import { useId, useRef, type ReactNode } from "react";
import { Button } from "./Button";
import { useDialogFocus } from "./useDialogFocus";

type ModalProps = {
  open: boolean;
  onClose: () => void;
  title: string;
  children: ReactNode;
  footer?: ReactNode;
  widthClassName?: string;
};

export function Modal({ open, onClose, title, children, footer, widthClassName = "max-w-lg" }: ModalProps) {
  const dialogRef = useRef<HTMLDivElement>(null);
  const titleId = useId();
  useDialogFocus(open, onClose, dialogRef);

  if (!open) return null;

  return (
    // Bottom-aligned on a phone (thumb reach, and it clears the keyboard when
    // a field is focused), centred from sm up.
    <div className="fixed inset-0 z-50 flex items-end justify-center bg-black/40 p-0 sm:items-center sm:p-4">
      <div
        ref={dialogRef}
        role="dialog"
        aria-modal="true"
        // Points at the real heading rather than duplicating the string, so
        // the accessible name cannot drift from what is on screen.
        aria-labelledby={titleId}
        tabIndex={-1}
        className={`flex max-h-[92dvh] w-full flex-col rounded-t-xl bg-white shadow-[var(--shadow-overlay)] outline-none sm:max-h-[85dvh] sm:rounded ${widthClassName}`}
      >
        <div className="flex shrink-0 items-center justify-between border-b border-border px-4 py-3 sm:px-6 sm:py-4">
          <h2 id={titleId} className="text-lg font-bold text-ink">
            {title}
          </h2>
          <Button variant="icon" onClick={onClose} aria-label="Schließen" className="-mr-1">
            <X className="h-5 w-5" />
          </Button>
        </div>
        <div className="flex-1 overflow-y-auto overscroll-contain px-4 py-4 sm:px-6">{children}</div>
        {footer && (
          <div className="flex shrink-0 flex-wrap items-center justify-end gap-2 border-t border-border px-4 py-3 pb-[max(0.75rem,env(safe-area-inset-bottom))] sm:px-6 sm:py-4">
            {footer}
          </div>
        )}
      </div>
    </div>
  );
}