/**
 * AppPopup — TradeAlertModal(tam-) 기준 공통 팝업 셸
 * 신규 팝업은 이 컴포넌트를 사용하세요.
 */
import React from 'react';
import { createPortal } from 'react-dom';
import { useDraggablePanel } from '../hooks/useDraggablePanel';

export const APP_POPUP_ACCENT = '#3f7ef5';
export const APP_POPUP_ACCENT_GLOW = 'rgba(63,126,245,0.22)';

export interface AppPopupProps {
  onClose: () => void;
  title: React.ReactNode;
  titleKo?: React.ReactNode;
  badge?: string;
  accentColor?: string;
  children: React.ReactNode;
  width?: number | string;
  maxWidth?: number | string;
  className?: string;
  shellClassName?: string;
  overlayClassName?: string;
  bodyClassName?: string;
  centered?: boolean;
  zIndex?: number;
  closeOnBackdrop?: boolean;
  backdrop?: boolean;
  portal?: boolean;
  headerExtra?: React.ReactNode;
  footer?: React.ReactNode;
  initialPosition?: { x: number; y: number };
}

export const AppPopup: React.FC<AppPopupProps> = ({
  onClose,
  title,
  titleKo,
  badge,
  accentColor = APP_POPUP_ACCENT,
  children,
  width = 400,
  maxWidth = '96vw',
  className,
  shellClassName,
  overlayClassName,
  bodyClassName = 'app-popup-body',
  centered = true,
  zIndex = 9999,
  closeOnBackdrop = true,
  backdrop = false,
  portal = true,
  headerExtra,
  footer,
  initialPosition,
}) => {
  const accentGlow = accentColor === APP_POPUP_ACCENT
    ? APP_POPUP_ACCENT_GLOW
    : `${accentColor}38`;

  const {
    panelRef,
    dragging,
    onHeaderPointerDown,
    headerTouchStyle,
    panelStyle,
    headerCursor,
  } = useDraggablePanel({ centerOnMount: centered, initialPosition });

  const overlayCls = [
    'app-popup-overlay',
    backdrop ? 'app-popup-overlay--dim' : '',
    overlayClassName ?? '',
    className ?? '',
  ].filter(Boolean).join(' ');

  const shellCls = ['app-popup-shell', shellClassName ?? ''].filter(Boolean).join(' ');

  const content = (
    <div
      className={overlayCls}
      style={{ zIndex }}
      onMouseDown={e => {
        if (closeOnBackdrop && backdrop && e.target === e.currentTarget) onClose();
      }}
    >
      <div
        ref={panelRef}
        className={shellCls}
        style={{
          ...panelStyle,
          width,
          maxWidth,
          cursor: dragging ? 'grabbing' : undefined,
          '--app-popup-accent': accentColor,
          '--app-popup-accent-glow': accentGlow,
          '--tam-accent': accentColor,
          '--tam-accent-glow': accentGlow,
          '--lsp-accent': accentColor,
          '--lsp-accent-glow': accentGlow,
        } as React.CSSProperties}
        onMouseDown={e => e.stopPropagation()}
      >
        <div
          className="gc-popup-header app-popup-header"
          onPointerDown={onHeaderPointerDown}
          style={{ cursor: headerCursor, ...headerTouchStyle }}
        >
          <div className="app-popup-header-left">
            {badge ? (
              <span className="app-popup-badge" style={{ background: accentColor }}>
                {badge}
              </span>
            ) : null}
            <span className="app-popup-header-title">
              {title}
              {titleKo != null && titleKo !== '' ? (
                <span className="app-popup-header-ko"> ({titleKo})</span>
              ) : null}
            </span>
          </div>
          {headerExtra}
          <button
            type="button"
            className="app-popup-close gc-popup-close"
            onMouseDown={e => e.stopPropagation()}
            onClick={onClose}
            aria-label="닫기"
          >
            ✕
          </button>
        </div>
        <div className={bodyClassName}>{children}</div>
        {footer}
      </div>
    </div>
  );

  if (portal && typeof document !== 'undefined' && document.body) {
    return createPortal(content, document.body);
  }
  return content;
};

export default AppPopup;
