import { ShadowlessElement } from '@blockeditor/lit';
import { baseTheme } from '@toeverything/theme';
import { html } from 'lit';
import { customElement } from 'lit/decorators.js';

import { Point } from '../../../../_common/utils/index.js';

@customElement('affine-drag-preview')
export class DragPreview extends ShadowlessElement {
  offset: Point;

  constructor(offset?: Point) {
    super();
    this.offset = offset ?? new Point(0, 0);
  }

  override render() {
    return html`<style>
      affine-drag-preview {
        box-sizing: border-box;
        position: absolute;
        display: block;
        height: auto;
        font-family: ${baseTheme.fontSansFamily};
        font-size: var(--affine-font-base);
        line-height: var(--affine-line-height);
        color: var(--affine-text-primary-color);
        font-weight: 400;
        top: 0;
        left: 0;
        transform-origin: 0 0;
        opacity: 0.5;
        user-select: none;
        pointer-events: none;
        caret-color: transparent;
        z-index: 3;
      }

      .affine-drag-preview-grabbing * {
        cursor: grabbing !important;
      }
    </style>`;
  }
}

declare global {
  interface HTMLElementTagNameMap {
    'affine-drag-preview': DragPreview;
  }
}