Th3Mouk / PokemonGo-IV-Calculator

     * @param  float $trainer the level of the the trainer

     * @return int   dusts to max the pokemon

     */

    public static function dustsToMax(float $pokemon, float $trainer)

    {

        $trainer += 1.5;

        $loop = $pokemon;

        $dusts = 0;

        $levels = (new LevelExtractor())

            ->getIntervalLevelFiltered($pokemon, $trainer);

        $levels

            ->each(function ($level) use (&$dusts, &$loop, $trainer) {

                $loop += 0.5;

                $dusts += $level->dust * 2;

            });

        if ($pokemon*2 % 2 === 1) {

            $dusts -= $levels->first()->dust;

        }

        $dusts -= $levels->last()->dust;

        return $dusts;

    }

    /**

     * Method to calculate how many candies are necessary to max a pokemon

     * @param  float $trainer the level of the the trainer

     * @return int   dusts to max the pokemon

     */

    public static function candiesToMax(float $pokemon, float $trainer)

    {

        $trainer += 1.5;

        $loop = $pokemon;

        $candies = 0;

        $levels = (new LevelExtractor())

            ->getIntervalLevelFiltered($pokemon, $trainer);

        $levels

            ->each(function ($level) use (&$candies, &$loop, $trainer) {

                $loop += 0.5;

                $candies += $level->candy * 2;

            });

        if ($pokemon*2 % 2 === 1) {

            $candies -= $levels->first()->candy;

        }

        $candies -= $levels->last()->candy;

        return $candies;

    }

}