const serializedCoordinateTolerance = 1e-6

export const shouldApplyInitialViewport = initializedViewport => !initializedViewport

export const viewportMatchesBounds = (viewport, bounds) => {
  if (!viewport || !bounds) return false

  return [
    [viewport.west, bounds.getWest()],
    [viewport.south, bounds.getSouth()],
    [viewport.east, bounds.getEast()],
    [viewport.north, bounds.getNorth()]
  ].every(
    ([saved, current]) =>
      Number.isFinite(saved) &&
      Number.isFinite(current) &&
      Math.abs(saved - current) <= serializedCoordinateTolerance
  )
}

export const mapSizeChanged = (previous, current) => {
  if (!previous) return true

  return previous.width !== current.width || previous.height !== current.height
}