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import type * as React from 'react';
import type { CSSMotionProps } from 'rc-motion';

import type { NotificationConfig, NotificationPlacement } from './interface';
import type { NotificationConfig as CPNotificationConfig } from '../config-provider/context';

export function getPlacementStyle(placement: NotificationPlacement, top: number, bottom: number) {
  let style: React.CSSProperties;

  switch (placement) {
    case 'top':
      style = {
        left: '50%',
        transform: 'translateX(-50%)',
        right: 'auto',
        top,
        bottom: 'auto',
      };
      break;

    case 'topLeft':
      style = {
        left: 0,
        top,
        bottom: 'auto',
      };
      break;

    case 'topRight':
      style = {
        right: 0,
        top,
        bottom: 'auto',
      };
      break;

    case 'bottom':
      style = {
        left: '50%',
        transform: 'translateX(-50%)',
        right: 'auto',
        top: 'auto',
        bottom,
      };
      break;

    case 'bottomLeft':
      style = {
        left: 0,
        top: 'auto',
        bottom,
      };
      break;

    default:
      style = {
        right: 0,
        top: 'auto',
        bottom,
      };
      break;
  }
  return style;
}

export function getMotion(prefixCls: string): CSSMotionProps {
  return {
    motionName: `${prefixCls}-fade`,
  };
}

export function getCloseIconConfig(
  closeIcon: React.ReactNode,
  notificationConfig?: NotificationConfig,
  notification?: CPNotificationConfig,
) {
  if (typeof closeIcon !== 'undefined') {
    return closeIcon;
  }
  if (typeof notificationConfig?.closeIcon !== 'undefined') {
    return notificationConfig.closeIcon;
  }
  return notification?.closeIcon;
}