import type { Range } from '@zakodium/nmr-types';
import type { Spectrum1D } from '@zakodium/nmrium-core';

export interface ChangeRangeRelativeValueProps {
  id: string; // id of the selected range
  value: number; // New relative value
}

/**
 * Change Range relative value and re-calculate the relative values for the other ranges
 * @param {Spectrum1D} spectrum  spectrum 1d
 * @param {RangeProps} newRange
 */
export function changeRangeRelativeValue(
  spectrum: Spectrum1D,
  data: ChangeRangeRelativeValueProps,
) {
  const { id, value } = data;
  const index = spectrum.ranges.values.findIndex((range) => range.id === id);

  if (index !== -1) {
    const { absolute } = spectrum.ranges.values[index];
    const ratio = absolute / value;

    const ranges: Range[] = [];
    let sum = 0;

    for (const range of spectrum.ranges.values) {
      const integration = range.absolute / ratio;
      sum += integration;
      ranges.push({ ...range, integration });
    }

    spectrum.ranges.options = {
      ...spectrum.ranges.options,
      mf: undefined,
      moleculeId: undefined,
      sumAuto: false,
      sum,
    };
    spectrum.ranges.values = ranges;
  }
}