linear-modal

'use client';

import React, {
  useCallback,
  useContext,
  useEffect,
  useId,
  useMemo,
  useRef,
  useState,
} from 'react';
import {
  motion,
  AnimatePresence,
  MotionConfig,
  Transition,
  Variant,
} from 'motion/react';
import { createPortal } from 'react-dom';
import { cn } from '@/lib/utils';
import { XIcon } from 'lucide-react';

interface DialogContextType {
  isOpen: boolean;
  setIsOpen: React.Dispatch<React.SetStateAction<boolean>>;
  uniqueId: string;
  triggerRef: React.RefObject<HTMLDivElement>;
}

const DialogContext = React.createContext<DialogContextType | null>(null);

function useDialog() {
  const context = useContext(DialogContext);
  if (!context) {
    throw new Error('useDialog must be used within a DialogProvider');
  }
  return context;
}

type DialogProviderProps = {
  children: React.ReactNode;
  transition?: Transition;
};

function DialogProvider({ children, transition }: DialogProviderProps) {
  const [isOpen, setIsOpen] = useState(false);
  const uniqueId = useId();
  const triggerRef = useRef<HTMLDivElement>(null);

  const contextValue = useMemo(
    () => ({ isOpen, setIsOpen, uniqueId, triggerRef }),
    [isOpen, uniqueId]
  );

  return (
    <DialogContext.Provider
      //@ts-ignore
      value={contextValue}
    >
      <MotionConfig transition={transition}>{children}</MotionConfig>
    </DialogContext.Provider>
  );
}

type DialogProps = {
  children: React.ReactNode;
  transition?: Transition;
};

function Dialog({ children, transition }: DialogProps) {
  return (
    <DialogProvider>
      <MotionConfig transition={transition}>{children}</MotionConfig>
    </DialogProvider>
  );
}

type DialogTriggerProps = {
  children: React.ReactNode;
  className?: string;
  style?: React.CSSProperties;
  triggerRef?: React.RefObject<HTMLDivElement>;
};

function DialogTrigger({
  children,
  className,
  style,
  triggerRef,
}: DialogTriggerProps) {
  const { setIsOpen, isOpen, uniqueId } = useDialog();

  const handleClick = useCallback(() => {
    setIsOpen(!isOpen);
  }, [isOpen, setIsOpen]);

  const handleKeyDown = useCallback(
    (event: React.KeyboardEvent) => {
      if (event.key === 'Enter' || event.key === ' ') {
        event.preventDefault();
        setIsOpen(!isOpen);
      }
    },
    [isOpen, setIsOpen]
  );

  return (
    <motion.div
      ref={triggerRef}
      layoutId={`dialog-${uniqueId}`}
      className={cn('relative cursor-pointer', className)}
      onClick={handleClick}
      onKeyDown={handleKeyDown}
      style={style}
      role='button'
      aria-haspopup='dialog'
      aria-expanded={isOpen}
      aria-controls={`dialog-content-${uniqueId}`}
    >
      {children}
    </motion.div>
  );
}

type DialogContent = {
  children: React.ReactNode;
  className?: string;
  style?: React.CSSProperties;
};

function DialogContent({ children, className, style }: DialogContent) {
  const { setIsOpen, isOpen, uniqueId, triggerRef } = useDialog();
  const containerRef = useRef<HTMLDivElement>(null);
  const [firstFocusableElement, setFirstFocusableElement] =
    useState<HTMLElement | null>(null);
  const [lastFocusableElement, setLastFocusableElement] =
    useState<HTMLElement | null>(null);

  useEffect(() => {
    const handleKeyDown = (event: KeyboardEvent) => {
      if (event.key === 'Escape') {
        setIsOpen(false);
      }
      if (event.key === 'Tab') {
        if (!firstFocusableElement || !lastFocusableElement) return;

        if (event.shiftKey) {
          if (document.activeElement === firstFocusableElement) {
            event.preventDefault();
            lastFocusableElement.focus();
          }
        } else {
          if (document.activeElement === lastFocusableElement) {
            event.preventDefault();
            firstFocusableElement.focus();
          }
        }
      }
    };

    document.addEventListener('keydown', handleKeyDown);

    return () => {
      document.removeEventListener('keydown', handleKeyDown);
    };
  }, [setIsOpen, firstFocusableElement, lastFocusableElement]);

  useEffect(() => {
    if (isOpen) {
      document.body.style.overflow = 'hidden';

      const focusableElements = containerRef.current?.querySelectorAll(
        'button, [href], input, select, textarea, [tabindex]:not([tabindex="-1"])'
      );
      if (focusableElements && focusableElements.length > 0) {
        setFirstFocusableElement(focusableElements[0] as HTMLElement);
        setLastFocusableElement(
          focusableElements[focusableElements.length - 1] as HTMLElement
        );
        // Delay focus slightly to allow animation to start
        requestAnimationFrame(() => {
          (focusableElements[0] as HTMLElement).focus();
        });
      }

      if (containerRef.current) {
        containerRef.current.scrollTop = 0;
      }
    } else {
      document.body.style.overflow = '';
      triggerRef.current?.focus();
    }
  }, [isOpen, triggerRef]);

  return (
    <>
      <motion.div
        ref={containerRef}
        layoutId={`dialog-${uniqueId}`}
        className={cn('overflow-hidden', className)}
        style={{
          ...style,
          willChange: 'transform, opacity', // GPU acceleration
        }}
        role='dialog'
        aria-modal='true'
        aria-labelledby={`dialog-title-${uniqueId}`}
        aria-describedby={`dialog-description-${uniqueId}`}
        initial={{ scale: 0.95, opacity: 0 }}
        animate={{ scale: 1, opacity: 1 }}
        exit={{ scale: 0.95, opacity: 0 }}
        transition={{
          type: 'spring',
          damping: 25,
          stiffness: 300,
          mass: 0.8,
        }}
      >
        {children}
      </motion.div>
    </>
  );
}
type DialogContainerProps = {
  children: React.ReactNode;
  className?: string;
  overlayClassName?: string;
  style?: React.CSSProperties;
};

function DialogContainer({
  children,
  className,
  overlayClassName,
}: DialogContainerProps) {
  const { isOpen, setIsOpen, uniqueId } = useDialog();
  const [mounted, setMounted] = useState(false);

  useEffect(() => {
    const drawerWrapper = document.querySelectorAll('[drawer-wrapper]');

    if (isOpen) {
      document.body.classList.add('overflow-hidden');
      drawerWrapper.forEach((wrapper) => wrapper?.classList.add('open'));
    } else {
      document.body.classList.remove('overflow-hidden');
      drawerWrapper.forEach((wrapper) => wrapper?.classList.remove('open'));
    }
    const handleKeyDown = (event: KeyboardEvent) => {
      if (event.key === 'Escape') {
        setIsOpen(false);
      }
    };

    document.addEventListener('keydown', handleKeyDown);
    return () => {
      document.removeEventListener('keydown', handleKeyDown);
    };
  }, [isOpen]);

  useEffect(() => {
    setMounted(true);
    return () => {
      setMounted(false);
    };
  }, []);

  if (!mounted) return null;

  return createPortal(
    <AnimatePresence initial={false} mode='wait'>
      {isOpen && (
        <>
          <motion.div
            key={`backdrop-${uniqueId}`}
            data-lenis-prevent
            className={cn(
              'fixed inset-0 h-full z-50 w-full backdrop-blur-xl dark:bg-[radial-gradient(125%_125%_at_50%_10%,#050505_40%,#243aff_100%)] bg-[radial-gradient(125%_125%_at_50%_10%,#ffffff_40%,#243aff_100%)]',
              overlayClassName
            )}
            initial={{ opacity: 0 }}
            animate={{ opacity: 1 }}
            exit={{ opacity: 0 }}
            transition={{
              duration: 0.2,
              ease: [0.4, 0.0, 0.4, 1],
            }}
            onClick={() => setIsOpen(false)}
          ></motion.div>
          <motion.div
            className={cn(`fixed inset-0 z-50 w-fit mx-auto`, className)}
            style={{ willChange: 'transform' }} // GPU acceleration for transforms
          >
            {children}
          </motion.div>
        </>
      )}
    </AnimatePresence>,
    document.body
  );
}
type DialogTitleProps = {
  children: React.ReactNode;
  className?: string;
  style?: React.CSSProperties;
};

function DialogTitle({ children, className, style }: DialogTitleProps) {
  const { uniqueId } = useDialog();

  return (
    <motion.h1
      layoutId={`dialog-title-container-${uniqueId}`}
      className={className}
      style={style}
      layout
    >
      {children}
    </motion.h1>
  );
}

type DialogSubtitleProps = {
  children: React.ReactNode;
  className?: string;
  style?: React.CSSProperties;
};

function DialogSubtitle({ children, className, style }: DialogSubtitleProps) {
  const { uniqueId } = useDialog();

  return (
    <motion.div
      layoutId={`dialog-subtitle-container-${uniqueId}`}
      className={className}
      style={style}
    >
      {children}
    </motion.div>
  );
}

type DialogDescriptionProps = {
  children: React.ReactNode;
  className?: string;
  disableLayoutAnimation?: boolean;
  variants?: {
    initial: Variant;
    animate: Variant;
    exit: Variant;
  };
};

function DialogDescription({
  children,
  className,
  variants,
  disableLayoutAnimation,
}: DialogDescriptionProps) {
  const { uniqueId } = useDialog();

  return (
    <motion.div
      key={`dialog-description-${uniqueId}`}
      layoutId={
        disableLayoutAnimation
          ? undefined
          : `dialog-description-content-${uniqueId}`
      }
      variants={variants}
      className={className}
      initial='initial'
      animate='animate'
      exit='exit'
      id={`dialog-description-${uniqueId}`}
    >
      {children}
    </motion.div>
  );
}

type DialogImageProps = {
  src: string;
  alt: string;
  className?: string;
  style?: React.CSSProperties;
};

function DialogImage({ src, alt, className, style }: DialogImageProps) {
  const { uniqueId } = useDialog();

  return (
    <motion.img
      src={src}
      alt={alt}
      className={cn(className)}
      layoutId={`dialog-img-${uniqueId}`}
      style={style}
    />
  );
}

type DialogCloseProps = {
  children?: React.ReactNode;
  className?: string;
  variants?: {
    initial: Variant;
    animate: Variant;
    exit: Variant;
  };
};

function DialogClose({ children, className, variants }: DialogCloseProps) {
  const { setIsOpen, uniqueId } = useDialog();

  const handleClose = useCallback(() => {
    setIsOpen(false);
  }, [setIsOpen]);

  return (
    <motion.button
      onClick={handleClose}
      type='button'
      aria-label='Close dialog'
      key={`dialog-close-${uniqueId}`}
      className={cn('absolute right-6 top-6 text-white', className)}
      initial='initial'
      animate='animate'
      exit='exit'
      variants={variants}
    >
      {children || <XIcon size={24} />}
    </motion.button>
  );
}

export {
  Dialog,
  DialogTrigger,
  DialogContainer,
  DialogContent,
  DialogClose,
  DialogTitle,
  DialogSubtitle,
  DialogDescription,
  DialogImage,
};