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import { NodeSelection, TextSelection, type Selection } from "@tiptap/pm/state";
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import type { EditorView } from "@tiptap/pm/view";
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function scheduleFrame(callback: FrameRequestCallback): number {
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  if (typeof requestAnimationFrame === "function") {
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    return requestAnimationFrame(callback);
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  }
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  queueMicrotask(() => callback(0));
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  return 0;
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}
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export function getMovedTextblockCursorPos(selection: Selection): number | null {
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  if (!(selection instanceof NodeSelection) || !selection.node.isTextblock) {
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    return null;
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  }
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  return Math.max(selection.from + 1, selection.to - 1);
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}
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function finalizeMovedTextblockSelection(view: EditorView): boolean {
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  view.updateState(view.state);
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  const cursorPos = getMovedTextblockCursorPos(view.state.selection);
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  if (cursorPos === null) return false;
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  view.dispatch(
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    view.state.tr.setSelection(TextSelection.create(view.state.doc, cursorPos)).setMeta("addToHistory", false),
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  );
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  return true;
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}
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export function scheduleMovedTextblockSelectionFinalization(view: EditorView) {
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  scheduleFrame(() => {
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    if (view.isDestroyed) return;
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    finalizeMovedTextblockSelection(view);
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  });
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}