import { clamp } from "@noya-app/noya-utils";
import { VOffsetRange, VRange } from "@noya-app/text-editing";

export type SelectionPoint = VRange["anchor"];
export type SelectionRange = VRange;

export const TEXT_SELECTION_PATH = [0];

export function selectionToOffsetRange(
  range: SelectionRange | null,
  textLength: number
): VOffsetRange | null {
  if (!range) return null;

  return {
    anchor: clamp(range.anchor.column, 0, textLength),
    focus: clamp(range.focus.column, 0, textLength),
    xPosition: range.xPosition,
  };
}

export function offsetRangeToSelection(range: VOffsetRange): SelectionRange {
  return {
    anchor: { path: TEXT_SELECTION_PATH, column: range.anchor },
    focus: { path: TEXT_SELECTION_PATH, column: range.focus },
    xPosition: range.xPosition,
  };
}