frontend/src/mapPointSizing.js

export const MAP_POINT_RADIUS_MIN_DEFAULT = 3
export const MAP_POINT_RADIUS_MAX_DEFAULT = 18
export const MAP_POINT_RADIUS_MIN_LIMIT = 1
export const MAP_POINT_RADIUS_MAX_LIMIT = 64

function parseFiniteNumber(value, fallback) {
  if (value === null || value === undefined || value === '') return fallback
  const parsed = Number(String(value).trim().replace(',', '.'))
  return Number.isFinite(parsed) ? parsed : fallback
}

export function normalizeMapPointRadiusRange(minValue, maxValue) {
  let min = parseFiniteNumber(minValue, MAP_POINT_RADIUS_MIN_DEFAULT)
  let max = parseFiniteNumber(maxValue, MAP_POINT_RADIUS_MAX_DEFAULT)
  min = Math.min(MAP_POINT_RADIUS_MAX_LIMIT, Math.max(MAP_POINT_RADIUS_MIN_LIMIT, min))
  max = Math.min(MAP_POINT_RADIUS_MAX_LIMIT, Math.max(MAP_POINT_RADIUS_MIN_LIMIT, max))
  if (min > max) {
    const temp = min
    min = max
    max = temp
  }
  return { min, max }
}