import { clamp } from 'lodash'
import { useWindowDimensions } from 'react-native'

export const useFontScale = ({
  maxFontSizeMultiplier,
  minFontSizeMultiplier,
}: {
  maxFontSizeMultiplier?: number
  minFontSizeMultiplier?: number
} = {}) => {
  const { fontScale: nativeFontScale } = useWindowDimensions()

  // Infinity values are used to negate the scale if only one constraint is provided. This ensures that the scale is clamped to the provided constraint.
  const maxFontScale = maxFontSizeMultiplier ?? Number.POSITIVE_INFINITY
  const minFontScale = minFontSizeMultiplier ?? Number.NEGATIVE_INFINITY

  const clampedScale = clamp(nativeFontScale, minFontScale, maxFontScale)

  return clampedScale
}