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import { NodeSelection } from "@tiptap/pm/state";
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import type { EditorView } from "@tiptap/pm/view";
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type InternalDraggingState = NonNullable<EditorView["dragging"]> & {
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  node?: NodeSelection;
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};
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type BlockDragView = Pick<EditorView, "dispatch" | "state"> & {
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  dragging: InternalDraggingState | null;
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};
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export function primeTopLevelBlockDragState(view: BlockDragView, pos: number): boolean {
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  if (pos < 0 || pos > view.state.doc.content.size) {
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    return false;
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  }
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  const node = view.state.doc.nodeAt(pos);
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  if (!node || !NodeSelection.isSelectable(node)) {
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    return false;
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  }
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  const selection = NodeSelection.create(view.state.doc, pos);
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  view.dragging = {
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    slice: view.state.doc.slice(pos, pos + node.nodeSize),
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    move: true,
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    node: selection,
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  };
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  view.dispatch(view.state.tr.setSelection(selection));
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  return true;
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}