"use client";

import { useRef } from "react";
import { motion, AnimatePresence } from "framer-motion";

type ModalVariant = "sheet" | "dialog";

interface ModalProps {
  open: boolean;
  onClose: () => void;
  children: React.ReactNode;
  variant?: ModalVariant;
  /** Used for aria-labelledby; the element with this id should contain the dialog title */
  titleId?: string;
}

const sheet = {
  backdrop:
    "fixed inset-0 z-50 flex items-end justify-center bg-black/60 backdrop-blur-sm sm:items-center",
  content:
    "relative w-full max-w-sm rounded-t-3xl bg-surface px-5 pb-8 pt-5 shadow-2xl ring-1 ring-border sm:rounded-3xl sm:pb-6",
  initial: { y: "100%" },
  animate: { y: 0 },
  exit: { y: "100%" },
  transition: { type: "spring" as const, damping: 28, stiffness: 350 },
};

const dialog = {
  backdrop:
    "fixed inset-0 z-50 flex items-center justify-center bg-black/60 backdrop-blur-sm",
  content:
    "mx-6 w-full max-w-xs rounded-2xl bg-surface px-6 py-6 shadow-2xl ring-1 ring-border",
  initial: { scale: 0.9, opacity: 0 },
  animate: { scale: 1, opacity: 1 },
  exit: { scale: 0.9, opacity: 0 },
  transition: { type: "spring" as const, damping: 25, stiffness: 350 },
};

const variants = { sheet, dialog };

export default function Modal({
  open,
  onClose,
  children,
  variant = "sheet",
  titleId,
}: ModalProps) {
  const backdropRef = useRef<HTMLDivElement>(null);
  const v = variants[variant];

  return (
    <AnimatePresence>
      {open && (
        <motion.div
          ref={backdropRef}
          className={v.backdrop}
          initial={{ opacity: 0 }}
          animate={{ opacity: 1 }}
          exit={{ opacity: 0 }}
          transition={{ duration: 0.2 }}
          onClick={(e) => {
            if (e.target === backdropRef.current) onClose();
          }}
        >
          <motion.div
            role="dialog"
            aria-modal="true"
            aria-labelledby={titleId}
            className={v.content}
            initial={v.initial}
            animate={v.animate}
            exit={v.exit}
            transition={v.transition}
          >
            {children}
          </motion.div>
        </motion.div>
      )}
    </AnimatePresence>
  );
}